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  • 1. Aaberg, Jenny B.
    et al.
    Samec, Joseph S. M.
    Baeckvall, Jan-E.
    Mechanistic investigation on the hydrogenation of imines by [p-(Me2CH)C6H4Me]RuH(NH2CHPhCHPhNSO2C6H4-p-CH3). Experimental support for an ionic pathway.2006In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, no 26, p. 2771-2773Article in journal (Refereed)
    Abstract [en]

    The need for acidic activation in the stoichiometric hydrogenation of benzyl-[1-phenyl-ethylidene]-amine (6a) or [1-(4-methoxy-phenyl)-ethylidene]-methyl-amine (6b) by Noyori's catalyst [p-(Me2CH)C6H4Me]RuH(NH2CHPhCHPhNSO2C6H4-p-CH3) (2) is inconsistent with the proposed concerted mechanism and supports an ionic mechanism. [on SciFinder(R)]

  • 2.
    Antila, Liisa J.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Santomauro, Fabio G.
    Hammarström, Leif
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Fernandes, Daniel L. A.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Sa, Jacinto
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Hunting for the elusive shallow traps in TiO2 anatase2015In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 51, no 54, p. 10914-10916Article in journal (Refereed)
    Abstract [en]

    Understanding electron mobility on TiO2 is crucial because of its applications in photocatalysis and solar cells. This work shows that shallow traps believed to be involved in electron migration in TiO2 conduction band are formed upon band gap excitation, i.e., are not pre-existing states. The shallow traps in TiO2 results from large polarons and are not restricted to surface.

  • 3.
    Beyler, Maryline
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science.
    Ezzaher, Salah
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science.
    Karnahl, Michael
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Molecular Biomimetics.
    Santoni, Marie-Pierre
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Molecular Biomimetics.
    Lomoth, Reiner
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Chemical Physics.
    Ott, Sascha
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Molecular Biomimetics.
    Pentacoordinate iron complexes as functional models of the distal iron in [FeFe] hydrogenases2011In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 47, no 42, p. 11662-11664Article in journal (Refereed)
    Abstract [en]

    Mononuclear pentacoordinate iron complexes with a free coordination site were prepared as mimics of the distal Fe (Fe(d)) in the active site of [FeFe] hydrogenases. The complexes catalyze the electrochemical reduction of protons at mild overpotential.

  • 4.
    Bhunia, Asamanjoy
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics. Natl Inst Technol Puducherry, Dept Chem, Karaikal 609609, India.
    Johnson, Ben A.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
    Czapla-Masztafiak, Joanna
    Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland.
    Sá, Jacinto
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry. Polish Acad Sci, Inst Phys Chem, Ul Kasprzaka 44-52, PL-01224 Warsaw, Poland.
    Ott, Sascha
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
    Formal water oxidation turnover frequencies from MIL-101(Cr) anchored Ru(bda) depend on oxidant concentration2018In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 54, p. 7770-7773Article in journal (Refereed)
    Abstract [en]

    The molecular water oxidation catalyst [Ru(bda)(L)(2)] has been incorporated into pyridine-decorated MIL-101(Cr) metal-organic frameworks. The resulting MIL-101@Ru materials exhibit turnover frequencies (TOFs) up to ten times higher compared to the homogenous reference. An unusual dependence of the formal TOFs on oxidant concentration is observed that ultimately arises from differing amounts of catalysts in the MOF crystals being active.

  • 5.
    Biswas, Srijit
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Synthetical Organic Chemistry.
    Samec, Joseph
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Synthetical Organic Chemistry.
    A Gold(I)-Catalyzed Route to α-Sulfenylated Carbonyl Compounds from Propargylic Alcohols and Aryl Thiols2012In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 48, no 52, p. 6586-6588Article in journal (Refereed)
    Abstract [en]

    A one-step atom efficient gold(I)-catalyzed route to α-sulfenylated ketones and aldehydes from propargylic alcohols and aryl thiols is described.

  • 6.
    Butorin, Sergei. M.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and Condensed Matter Physics.
    Kvashnina, Kristina O.
    European Synchrotron, CS40220, F-38043 Grenoble 9, France.;HZDR, Inst Resource Ecol, POB 510119, D-01314 Dresden, Germany..
    Prieur, Damien
    European Commiss, Inst Transuranium Elements, Joint Res Ctr, POB 2340, D-76125 Karlsruhe, Germany..
    Rivenet, Murielle
    Univ Lille, CNRS, Cent Lille,ENSL, Univ Artois,UMR 8181,UCCS,Unite Catalyse & Chim S, F-59000 Lille, France..
    Martin, Philippe M.
    CEA, DTEC SECA LCC, DEN, CEA Marcoule, F-30207 Bagnols Sur Ceze, France..
    Characteristics of chemical bonding of pentavalent uranium in La-doped UO22017In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 53, no 1, p. 115-118Article in journal (Refereed)
    Abstract [en]

    The effect of La doping on the electronic structure of U in UO2 was studied using an advanced technique, namely, X-ray absorption spectroscopy (XAS) in the high-energy-resolution fluorescence-detection (HERFD) mode, at the U 3d(3/2) (M-4) edge. Thanks to a significant reduction of the core-hole lifetime broadening and distinct chemical shifts of the HERFD-XAS lines, the U(v) formation as a result of La doping was identified. The isolated contribution of U(v) in the M-4 HERFD-XAS spectrum reveals the so-called charge-transfer satellites due to the U 5f-O 2p hybridization. The analysis of the experimental data within the framework of the Anderson impurity model (AIM) indicates a significant change in the characteristics and degree of covalency for the chemical bonding in the U(v) subsystem of UO2 as compared to undoped UO2, which is a Mott-Hubbard system. The results are also supported by AIM calculations of X-ray photoelectron and optical absorption data.

  • 7.
    Carlsson, Anna-Carin C.
    et al.
    Department of Chemistry and the Swedish NMR Centre, University of Gothenburg, Sweden.
    Grafenstein, Jurgen
    Department of Chemistry and the Swedish NMR Centre, University of Gothenburg, Sweden.
    Laurila, Jesse L.
    Department of Chemistry and the Swedish NMR Centre, University of Gothenburg, Sweden.
    Bergquist, Jonas
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Analytical Chemistry.
    Erdelyi, Mate
    Department of Chemistry and the Swedish NMR Centre, University of Gothenburg, Sweden.
    Symmetry of [N-X-N]+ halogen bonds in solution2012In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 48, no 10, p. 1458-1460Article in journal (Refereed)
    Abstract [en]

    The first investigation of halogen bond symmetry is presented. In contrast to related hydrogen bonds, the iodous halogen bond is symmetric in solution and in the crystal. The bromous analogue is symmetric in solution, but shows asymmetry in the solid state. NMR results are in agreement with DFT predictions.

  • 8. Chaignon, Frederique
    et al.
    Falkenström, Magnus
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Chemical Physics.
    Karlsson, Susanne
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Chemical Physics.
    Blart, Errol
    Odobel, Fabrice
    Hammarström, Leif
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Chemical Physics.
    Very large acceleration of the photoinduced electron transfer in a Ru(bpy) 3-naphthalene bisimide dyad bridged on the naphthyl core2007In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, no 1, p. 64-66Article in journal (Refereed)
    Abstract [en]

    By linking a naphthalenebisimide (NBI) unit to [Ru(bpy)3] 2+ on the naphthyl core the rate of photoinduced Ru-to-NBI electron transfer was 1000-fold increased compared to the case with a conventional linking on the nitrogen.

  • 9.
    Chen, Yun
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Chen, Hong
    Tian, Haining
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Immobilization of a cobalt catalyst on fullerene in molecular devices for water reduction2015In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 51, no 57, p. 11508-11511Article in journal (Refereed)
    Abstract [en]

    A cobalt-based molecular catalyst was successfully grafted to a fullerene derivative via 'click' chemistry on an electrode for both electro-catalytic and light driven water reduction. Using an organic photovoltaic electrode immobilized with a cobalt catalyst as the photocathode, the photoelectrochemical cell displayed a stable photocurrent.

  • 10. Chiotellis, Aristeidis
    et al.
    Sladojevich, Filippo
    Mu, Linjing
    Müller Herde, Adrienne
    Valverde, Ibai E
    Tolmachev, Vladimir
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology.
    Schibli, Roger
    Ametamey, Simon M
    Mindt, Thomas L
    Novel chemoselective (18)F-radiolabeling of thiol-containing biomolecules under mild aqueous conditions2016In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 52, no 36, p. 6083-6086Article in journal (Refereed)
    Abstract [en]

    We report a novel prosthetic group based on a heterocyclic methylsulfone derivative for the rapid, stable, and chemoselective (18)F-labeling of thiol-containing (bio)molecules under mild aqueous reaction conditions. Compared to established maleimide approaches, the new methodology displays some clear advantages for imaging probe development.

  • 11. Czyzewski, Michal
    et al.
    Sellars, Jonathan D.
    Guliashvili, Tamaz
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Physical Organic Chemistry.
    Tibbelin, Julius
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Physical Organic Chemistry.
    Johnstone, Lisa
    Bower, Justin
    Box, Matthew
    Davies, Robert D. M.
    Ottosson, Henrik
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Physical Organic Chemistry.
    Steel, Patrick G.
    The first intramolecular silene Diels-Alder reactions2014In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 50, no 22, p. 2919-2921Article in journal (Refereed)
    Abstract [en]

    The synthesis of silaheterocycles through the first examples of an intramolecular silene Diels-Alder reaction is described.

  • 12.
    Dabkowska, A. P.
    et al.
    Lund Univ, Div Phys Chem, POB 124, SE-22100 Lund, Sweden..
    Hirst, C.
    Lund Univ, Div Phys Chem, POB 124, SE-22100 Lund, Sweden..
    Valldeperas, M.
    Lund Univ, Div Phys Chem, POB 124, SE-22100 Lund, Sweden..
    Clifton, L. A.
    Rutherford Appleton Lab, Sci & Technol Facil Council, ISIS Pulsed Neutron & Muon Source, Harwell Oxford Campus, Didcot OX11 OQX, Oxon, England..
    Montis, C.
    Univ Florence, Dept Chem, I-50121 Florence, Italy.;CSGI, Florence, Italy..
    Nojd, S.
    Lund Univ, Div Phys Chem, POB 124, SE-22100 Lund, Sweden..
    Gentile, L.
    Lund Univ, Div Phys Chem, POB 124, SE-22100 Lund, Sweden..
    Wang, M.
    Lund Univ, Div Phys Chem, POB 124, SE-22100 Lund, Sweden..
    Pálsson, Gunnar Karl
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics. Inst Laue Langevin, Grenoble, France.
    Lages, S.
    Lund Univ, Max IV Lab, POB 118, SE-22100 Lund, Sweden.;Friedrich Alexander Univ, Crystallog & Struct Phys, Dept Phys, Erlangen, Germany..
    Berti, D.
    Univ Florence, Dept Chem, I-50121 Florence, Italy.;CSGI, Florence, Italy..
    Barauskas, J.
    Malmo Univ, Fac Hlth & Soc, Biomed Sci, SE-20506 Malmo, Sweden.;Camurus AB, Ideon Sci Pk,Gamma Bldg,Solvegatan 41, SE-22379 Lund, Sweden..
    Nylander, T.
    Lund Univ, Div Phys Chem, POB 124, SE-22100 Lund, Sweden..
    Temperature responsive lipid liquid crystal layers with embedded nanogels2017In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 53, no 8, p. 1417-1420Article in journal (Refereed)
    Abstract [en]

    Polymer nanogels are embedded within layers consisting of a nonlamellar liquid crystalline lipid phase to act as thermoresponsive controllers of layer compactness and hydration. As the nanogels change from the swollen to the collapsed state via a temperature trigger, they enable on-demand release of water from the mixed polymer-lipid layer while the lipid matrix remains intact. Combining stimuli-responsive polymers with responsive lipid-based mesophase systems opens up new routes in biomedical applications such as functional biomaterials, bioanalysis and drug delivery.

  • 13.
    Das, Biswanath
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
    Orthaber, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
    Ott, Sascha
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
    Thapper, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
    Water oxidation catalysed by a mononuclear CoII polypyridine complex; possible reaction intermediates and the role of the chloride ligand2015In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 51, no 66, p. 13074-13077Article in journal (Refereed)
    Abstract [en]

    A mononuclear cobalt(II) complex as a homogeneous molecular catalyst for photochemically, electrochemically and chemically induced oxygen evolution reactions is presented. Experimental evidence points towards the presence of a chloride ligand at the cobalt centre throughout the catalytic cycle, and the temporary detachment of a pyridine ligand to open a coordination site for substrate binding.

  • 14.
    Devaraj, Karthik
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Organic Chemistry.
    Sollert, Carina
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Organic Chemistry.
    Gates, P. J.
    Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England.
    Pilarski, Lukasz
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Organic Chemistry.
    Ru-Catalysed C-H Silylation of Gramines, Tryptamines and their Congeners2016In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 52, no 34, p. 5868-5871Article in journal (Refereed)
    Abstract [en]

    Selective Ru-catalysed C2–H silylation of heteroarenes is presented. The transformation works with or without directing group assistance and requires no protecting groups. Gramines and tryptamines may be converted efficiently whilst avoiding deleterious elimination side-reactions. Mechanistic studies reveal an unusual activation of the indole C4–H bond by an electron-rich metal.

  • 15.
    Dinér, Peter
    et al.
    Center for Catalysis, Department of Chemistry, Aarhus University.
    Nielsen, Martin
    Bertelsen, Søren
    Niess, Barbara
    Jørgensen, Karl Anker
    Enantioselective hydroxylation of nitroalkenes: an organocatalytic approach2007In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, no 35, p. 3646-3648Article in journal (Refereed)
    Abstract [en]

    An easy hydroxylation of aliphatic nitroalkenes in high yields and enantioselectivities is catalysed by bifunctional thiourea-cinchona alkaloids giving access to optically active nitroalcohols and aminoalcohols as final products.

  • 16. Diéguez, Montserrat
    et al.
    Mazuela, Javier
    Pàmies, Oscar
    Verendel, Johan
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry I.
    Andersson, Pher
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry I.
    Biaryl phosphite-oxazolines from hydroxyl aminoacid derivatives: highly efficient modular ligands for Ir-catalyzed hydrogenation of alkenes2008In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, no 33, p. 3888-3890Article in journal (Refereed)
    Abstract [en]

    High enantioselectivities and activities are achieved in the Ir-catalyzed hydrogenation of several unfunctionalized olefins using modular biaryl phosphite-oxazoline ligands from hydroxyl aminoacid derivatives, the presence of a biaryl phosphite group is crucial to this success.

  • 17. Ell, Alida H.
    et al.
    Samec, Joseph S. M.
    Brasse, Claudia
    Baeckvall, Jan-E.
    Dehydrogenation of aromatic amines to imines via ruthenium-catalyzed hydrogen transfer.2002In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, no 10, p. 1144-1145Article in journal (Refereed)
    Abstract [en]

    An efficient ruthenium-catalyzed transfer dehydrogenation of amines to imines was achieved under mild conditions using 2,6-dimethoxybenzoquinone (I) or a catalytic amt. of I with MnO2 as oxidant. [on SciFinder(R)]

  • 18.
    Ezzaher, Salah
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Molecular Biomimetics.
    Gogoll, Adolf
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry.
    Bruhn, Clemens
    Ott, Sascha
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Molecular Biomimetics.
    Directing protonation in [FeFe] hydrogenase active site models by modifications in their second coordination sphere2010In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 46, no 31, p. 5775-5777Article in journal (Refereed)
    Abstract [en]

    Subtle changes in the second coordination sphere of [Cl(2)bdtFe(2)-(CO)(4)(Ph2P-CH2-X-CH2-PPh2)] (bdt = benzene-1,2-dithiolate, X = NCH3, NCH2CF3, CH2) that do not influence the electronic character of the Fe-2 center can however direct protonation to three different sites: the N in the bis-phosphane, the Fe-Fe bond or the bdt-S.

  • 19. Fei, Honghan
    et al.
    Pullen, Sonja
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
    Wagner, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
    Ott, Sascha
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
    Cohen, Seth M.
    Functionalization of robust Zr(IV)-based metal-organic framework films via a postsynthetic ligand exchange2015In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 51, no 1, p. 66-69Article in journal (Refereed)
    Abstract [en]

    A facile and efficient fabrication approach for homogeneous, crack-free UiO-66 films with exceptionally high crystallinity and tunable thickness on a transparent and conductive glass substrate is reported. Two functionalized species, a catechol ligand and a Fe-2 complex with structural resemblance to the active site of [FeFe] hydrogenase, were introduced into the MOF films via a postsynthetic exchange. Voltammetric studies show the [FeFe] complex in the thinner UiO-66 films (2-5 mu m) can be reduced electrochemically.

  • 20. Feng, Feng
    et al.
    Hu, Shuanglin
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
    Guo, Yuqiao
    Zhao, Jiyin
    Chan, Ngai Yui
    Fei, Linfeng
    Yan, Wensheng
    Ning, Wei
    Yang, Jinlong
    Wang, Yu
    Xiea, Yi
    Wu, Changzheng
    Room-temperature large magnetic-dielectric coupling in new phase anatase VTiO42013In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 49, no 89, p. 10462-10464Article in journal (Refereed)
    Abstract [en]

    The synthetic new-phase VTiO4, as a new solid solution structure of anatase type, brings a large magnetodielectric ratio (Delta epsilon/epsilon(0)) of 7.2% at 300 K, representing a new simple-oxide structural catalogue exhibiting a room-temperature large magnetic-dielectric effect.

  • 21.
    Fluch, Ulrike
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
    Paneta, Valentina
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Primetzhofer, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
    Ott, Sascha
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
    Uniform distribution of post-synthetic linker exchange in metal-organic frameworks revealed by Rutherford backscattering spectrometry2017In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 53, no 48, p. 6516-6519Article in journal (Refereed)
    Abstract [en]

    Rutherford backscattering spectrometry (RBS) has been used for the first time to study post-synthetic linker exchange (PSE) in metal-organic frameworks. RBS is a non-invasive method to quantify the amount of introduced linker, as well as providing a means for depth profiling in order to identify the preferred localization of the introduced linker. The exchange of benzenedicarboxylate (bdc) by similarly sized 2-iodobenzenedicarboxylate (I-bdc) proceeds considerably slower than migration of I-dbc through the UiO-66 crystal. Consequently, the I-bdc is found evenly distributed throughout the UiO-66 samples, even at very short PSE exposure times.

  • 22. Fortage, Jérôme
    et al.
    Göransson, Erik
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Chemical Physics.
    Blart, Errol
    Becker, Hans-Christian
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Chemical Physics.
    Hammarström, Leif
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Chemical Physics.
    Odobel, Fabrice
    Strongly coupled zinc phthalocyanine-tin porphyrin dyad performing ultra-fast single step charge separation over a 34 Å distance2007In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, no 44, p. 4629-4631Article in journal (Refereed)
    Abstract [en]

    A zinc(ii) phthalocyanine-tin(iv) porphyrin dyad with a strong electronic coupling was synthesized and upon light excitation shown to exhibit ultra-fast, long-range electron transfer in a single step.

  • 23. Gabrielsson, Erik
    et al.
    Tian, Haining
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Eriksson, Susanna K.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Gao, Jiajia
    Chen, Hong
    Li, Fusheng
    Oscarsson, Johan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
    Sun, Junliang
    Rensmo, Håkan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
    Kloo, Lars
    Hagfeldt, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Sun, Licheng
    Dipicolinic acid: a strong anchoring group with tunable redox and spectral behavior for stable dye-sensitized solar cells2015In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 51, no 18, p. 3858-3861Article in journal (Refereed)
    Abstract [en]

    Dipicolinic acidwas investigated as a new anchoring group for DSSCs. A pilot dye (PD2) bearing this new anchoring group was found to adsorb significantly stronger to TiO2 than its cyanoacrylic acid analogue. The electrolyte composition was found to have a strong effect on the photoelectrochemical properties of the adsorbed dye in the device, allowing the dye LUMO energy to be tuned by 0.5 eV. Using a pyridine-free electrolyte, panchromatic absorption of the dye on TiO2 extending to 900 nm has been achieved. Solar cells using PD2 and a Co(bpy)(3) based electrolyte showed unique stability under simulated sunlight and elevated temperatures.

  • 24.
    Geng, Xue-Li
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science.
    Ott, Sascha
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science.
    Exploitation of an unprecedented silica-promoted acetylene-allene rearrangement for the preparation of C,C-diacetylenic phosphaalkenes2009In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, no 46, p. 7206-7208Article in journal (Refereed)
    Abstract [en]

    C,C-Diacetylenic phosphaalkenes have been obtained from a 1-chloro-3-ethynyl-1,2-allene which becomes accessible from a silica-promoted rearrangement of a 3-chloropenta-1,4-diyne; oxidative acetylene homo-coupling of the phosphadiethynyl-ethene is described for the first time and affords a dimeric, cross-conjugated product which features a largely decreased HOMO-LUMO gap compared to all-carbon-based reference compounds.

  • 25. Girovsky, Jan
    et al.
    Buzzi, Michele
    Waeckerlin, Christian
    Siewert, Dorota
    Nowakowski, Jan
    Oppeneer, Peter M.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
    Nolting, Frithjof
    Jung, Thomas A.
    Kleibert, Armin
    Ballav, Nirmalya
    Investigating magneto-chemical interactions at molecule-substrate interfaces by X-ray photo-emission electron microscopy2014In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 50, no 40, p. 5190-5192Article in journal (Refereed)
    Abstract [en]

    The magneto-chemical interaction of spin-bearing molecules with substrates is interesting from a coordination chemistry point of view and relevant for spintronics. Unprecedented insight is provided by X-ray photo-emission electron microscopy combined with X-ray magnetic circular dichroism spectroscopy. Here the coupling of a Mn-porphyrin ad-layer to the ferromagnetic Co substrate through suitably modified interfaces is analyzed with this technique.

  • 26. Goguet, Alexandre
    et al.
    Ace, Matthew
    Saih, Youssef
    Sa, Jacinto
    Kavanagh, Joy
    Hardacre, Christopher
    Remarkable stability of ionic gold supported on sulfated lanthanum oxide.2009In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, no 32, p. 4889-91Article in journal (Refereed)
    Abstract [en]

    Isolated cationic gold deposited on sulfated lanthanum oxide has been shown to exhibit remarkable stability opening a promising way of stabilising ionic gold for catalytic reactions.

  • 27.
    Gonzalez, Miguel A. Cortes
    et al.
    Stockholm Univ, Dept Organ Chem, SE-10691 Stockholm, Sweden.
    Nordeman, Patrik
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Medicinal Chemistry, Preparative Medicinal Chemistry.
    Gomez, Antonio Bermejo
    Stockholm Univ, Dept Organ Chem, SE-10691 Stockholm, Sweden;Karolinska Inst, AstraZeneca PET Ctr, SE-17176 Stockholm, Sweden.
    Meyer, Denise N.
    Stockholm Univ, Dept Organ Chem, SE-10691 Stockholm, Sweden.
    Antoni, Gunnar
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Medicinal Chemistry, Preparative Medicinal Chemistry.
    Schou, Magnus
    Karolinska Inst, AstraZeneca PET Ctr, SE-17176 Stockholm, Sweden.
    Szabo, Kalman J.
    Stockholm Univ, Dept Organ Chem, SE-10691 Stockholm, Sweden.
    [18F]fluoro-benziodoxole: a no-carrier-added electrophilic fluorinating reagent. Rapid, simple radiosynthesis, purification and application for fluorine-18 labelling2018In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 54, no 34, p. 4286-4289Article in journal (Refereed)
    Abstract [en]

    Operationally simple radiosynthesis and purification of [F-18]fluoro-benziodoxole was developed starting from a cyclotron produced [F-18]F- precursor, [F-18]TBAF, and tosyl-benziodoxole. The synthetic utility of [F-18]fluoro-benziodoxole was demonstrated by electrophilic fluorocyclization of o-styrilamides proceeding with high RCC (typically 50-90%) and high molar activity (up to 396 GBq mol(-1)).

  • 28.
    Gurav, Deepanjali
    et al.
    Savitri Bai Phule Pune Univ, Dept Chem, Pune, Maharashtra, India..
    Varghese, Oommen P.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Polymer Chemistry.
    Hamad, Osama A.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology.
    Nilsson, Bo
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Clinical Immunology.
    Hilborn, Jöns
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Polymer Chemistry.
    Oommen, Oommen Podiyan
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Polymer Chemistry.
    Chondroitin sulfate coated gold nanoparticles: a new strategy to resolve multidrug resistance and thromboinflammation2016In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 52, no 5, p. 966-969Article in journal (Refereed)
    Abstract [en]

    We have developed the first chondroitin sulfate polymer coated gold nanoparticles that can simultaneously overcome mulidrug resistance in cancer cells and suppress thromboinflammation triggered by the chemotherapeutic drug.

  • 29. Hagberg, Daniel P.
    et al.
    Edvinsson, Tomas
    Marinado, Tannia
    Boschloo, Gerrit
    Hagfeldt, Anders
    Sun, Licheng
    A novel organic chromophore for dye-sensitized nanostructured solar cells2006In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, no 21, p. 2245-2247Article in journal (Refereed)
  • 30. Hao, Yan
    Efficient near infrared D-∏-A sensitizers with lateral anchoring group for dye sensitized solar cells.2009In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, p. 4031-4033Article in journal (Refereed)
  • 31. Hao, Yan
    et al.
    Yang, Xichuan
    Cong, Jiayan
    Tian, Haining
    Hagfeldt, Anders
    Sun, Licheng.
    Efficient near infrared D-π-A sensitizers with lateral anchoring group for dye-sensitized solar cells.2009In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, no 27, p. 4031-4033Article in journal (Refereed)
    Abstract [en]

    A new strategy in which the anchoring group is sepd. from the acceptor groups of the dyes was developed; among these dyes, the HY103 dye gives a max. IPCE value of 86% at 660 nm and an η value of 3.7% in the NIR region reported in DSCs. [on SciFinder(R)]

  • 32.
    Hussenius, Anita
    et al.
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Arts, Centre for Gender Research. Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry.
    Matsson, Olle
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry.
    Bergson, Göran
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry.
    Experimental evidence of partially rate limiting ion-pair interconversion in a base catalyzed 1,3-proton transfer reaction1998In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, no 24, p. 2693-2694p. 2693-2694Article in journal (Refereed)
    Abstract [en]

    The relative rates for interconversion and reprotonation of the ion-pair intermediates are of the same order of magnitude in the piperidine catalyzed 'degenerate' rearrangement of 1,3-dimethylindene, as investigated using H-1 and H-2 NMR spectroscopy by

  • 33.
    Jeschull, Fabian
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
    Brandell, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
    Edström, Kristina
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
    Lacey, Matthew J.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
    A stable graphite negative electrode for the lithium-sulfur battery2015In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 51, no 96, p. 17100-17103Article in journal (Refereed)
  • 34.
    Johansson, Olof
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical Chemistry. Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Molecular Biomimetics. Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Chemical Physics. Avdelningen för molekylär biomimetik.
    Lomoth, Reiner
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical Chemistry. Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Molecular Biomimetics. Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Chemical Physics.
    Rapid electrochemically induced linkage isomerism in a ruthenium(II) polypyridyl complex2005In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, no 12, p. 1578-80Article in journal (Refereed)
  • 35. Johansson, Olof
    et al.
    Wolpher, Henriette
    Borgström, Magnus
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical Chemistry.
    Hammarström, L.eif
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical Chemistry.
    Bergquist, Jonas
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry, Analytical Chemistry.
    Sun, Licheng
    Åkermark, Björn
    Intramolecular charge separation in a hydrogen bonded tyrosine-ruthenium(II)-naphthalene diimide triad2004In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, no 2, p. 194-195Article in journal (Refereed)
    Abstract [en]

    Long-lived charge-separated states in the ns to [micro sign]s range were observed upon laser flash excitation of a donor-chromophore-acceptor triad based on tris(bipyridine) ruthenium(ii) as photo-sensitizer, naphthalene diimide as acceptor, and a hydrogen bonded phenol as donor.

  • 36. Johansson, Olof
    et al.
    Wolpher, Henriette
    Borgström, Magnus
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical Chemistry.
    Lomoth, Reiner
    Hammarström, Leif
    Bergquist, Jonas
    Sun, Licheng
    Åkermark, Björn
    Intramolecular Charge Separation in a Hydrogen Bonded Tyrosine-Ruthenium(II)-Naphtalene Diimide Triad2004In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, p. 194-195Article in journal (Refereed)
  • 37. Kathiravan, Subban
    et al.
    Ghosh, Shishir
    Hogarth, Graeme
    Nicholls, Ian A.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC.
    Copper catalysed amidation of aryl halides through chelation assistance2015In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 51, no 23, p. 4834-4837Article in journal (Refereed)
    Abstract [en]

    A copper mediated C-N bond formation for the amidation of aryl halides using 8-aminoquinoline has been developed. This strategy provides efficient access to amides bearing two contiguous heterocyclic moieties and does not require the presence of additional ligands.

  • 38. Kathiravan, Subban
    et al.
    Nicholls, Ian A.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC.
    Rhodium(III)-catalysed aerobic synthesis of highly functionalized indoles from N-arylurea under mild conditions through C-H activation2014In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 50, no 95, p. 14964-14967Article in journal (Refereed)
    Abstract [en]

    A Rh(III) catalysed amino arylation of alkynes using copper as the terminal oxidant for regeneration of the catalytically active species under aerobic conditions is described. This novel C-H activation reaction was applied to the synthesis of a wide range of substituted indoles from N-arylureas.

  • 39.
    Keränen, Henrik
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology, Computational and Systems Biology.
    Åqvist, Johan
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology, Computational and Systems Biology.
    Gutierrez-de-Teran, Hugo
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology, Computational and Systems Biology.
    Free energy calculations of A(2A) adenosine receptor mutation effects on agonist binding2015In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 51, no 17, p. 3522-3525Article in journal (Refereed)
    Abstract [en]

    A general computational scheme to evaluate the effects of single point mutations on ligand binding is reported. This scheme is applied to characterize agonist binding to the A(2A) adenosine receptor, and is found to accurately explain how point mutations of different nature affect the binding affinity of a potent agonist.

  • 40. Koh, Teck Ming
    et al.
    Li, Hairong
    Nonomura, Kazuteru
    Mathews, Nripan
    Hagfeldt, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Graetzel, Michael
    Mhaisalkar, Subodh G.
    Grimsdale, Andrew C.
    Photovoltage enhancement from cyanobiphenyl liquid crystals and 4-tert-butylpyridine in Co(II/III) mediated dye-sensitized solar cells2013In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 49, no 80, p. 9101-9103Article in journal (Refereed)
    Abstract [en]

    Two cyanobiphenyl liquid crystals (LCs), 5CB (4-cyano-4'-pentylbiphenyl) and 8CB (4-cyano-4'-octylbiphenyl), are introduced as additives into Co(II/ III) electrolytes for dye-sensitized solar cells (DSCs). An electrolyte containing a combination of these LCs and 4-tert-butylpyridine (TBP) exhibits higher photovoltage than one with only TBP, resulting in higher power conversion efficiency.

  • 41. Kreienbrink, Anika
    et al.
    Sarosi, Menyhart B.
    Kuhnert, Robert
    Wonneberger, Peter
    Arkhypchuk, Anna I.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
    Loennecke, Peter
    Ott, Sascha
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Molecular Biomimetics.
    Hey-Hawkins, Evamarie
    Carbaborane-based alkynylphosphanes and phospholes2015In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 51, no 5, p. 836-838Article in journal (Refereed)
    Abstract [en]

    The reaction of 1,2-bis(N,N-dimethylaminochloro-phosphanyl)-1,2-dicarba- closo-dodecaborane(12) and lithiated phenylacetylene gives a five-membered dihydrophosphole derivative with an exocyclic phosphanyl group. This unexpected reaction opens new possibilities for the synthesis of carbaborane-containing phosphorus heterocycles. P, P'-alkynylated 1,2-bis(phosphanyl)-1,2-dicarba-closo-dodecaborane(12)s are obtained from alkynylchlorophosphanes and dilithiated carbaborane. This new class of alkynes can be used for future applications in cyclizations and polymerizations.

  • 42.
    Kvashnina, Kristina O.
    et al.
    Helmholtz Zentrum Dresden Rossendorf HZDR, Inst Resource Ecol, POB 510119, D-01314 Dresden, Germany;ESRF, Rossendorf Beamline, CS40220, F-38043 Grenoble 9, France.
    Kowalski, Piotr M.
    JARA High Performance Comp, Schinkelstr 2, D-52062 Aachen, Germany;Forschungszentrum Julich, Nucl Waste Management & Reactor Safety, Inst Energy & Climate Res, IEK 6, Wilhelm Johnen Str, D-52428 Julich, Germany.
    Butorin, Sergei
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and Condensed Matter Physics.
    Leinders, Gregory
    Belgian Nucl Res Ctr SCK CEN, Inst Nucl Mat Sci, Boeretang 200, B-2400 Mol, Belgium.
    Pakarinen, Janne
    Belgian Nucl Res Ctr SCK CEN, Inst Nucl Mat Sci, Boeretang 200, B-2400 Mol, Belgium.
    Bes, Rene
    Aalto Univ, Dept Appl Phys, POB 14100, FI-00076 Aalto, Finland.
    Li, Haijian
    JARA High Performance Comp, Schinkelstr 2, D-52062 Aachen, Germany;Forschungszentrum Julich, Nucl Waste Management & Reactor Safety, Inst Energy & Climate Res, IEK 6, Wilhelm Johnen Str, D-52428 Julich, Germany.
    Verwerft, Marc
    Belgian Nucl Res Ctr SCK CEN, Inst Nucl Mat Sci, Boeretang 200, B-2400 Mol, Belgium.
    Trends in the valence band electronic structures of mixed uranium oxides2018In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 54, no 70, p. 9757-9760Article in journal (Refereed)
    Abstract [en]

    The valence band electronic structures of mixed uranium oxides (UO2 , U4O9 , U3O7, U3O8 , and beta-UO3) have been studied using the resonant inelastic X-ray scattering (RIXS) technique at the U M-5 edge and computational methods. We show here that the RIXS technique and recorded U 5f-O 2p charge transfer excitations can be used to test the validity of theoretical approximations.

  • 43.
    Lacey, Matthew J.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
    Edström, Kristina
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
    Brandell, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
    Visualising the problems with balancing lithium-sulfur batteries by "mapping'' internal resistance2015In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 51, no 92, p. 16502-16505Article in journal (Refereed)
    Abstract [en]

    Frequent and continuous determination of battery internal resistance by a simple current-interrupt method enables the visualisation of cell behaviour through the creation of resistance "maps'', showing changes in resistance as a function of both capacity and cycle number. This new approach is applied here for the investigation of cell failure in the lithium-sulfur system with Li electrode excesses optimised towards practically relevant specifications.

  • 44.
    Lacey, Matthew J.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
    Jeschull, Fabian
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
    Edström, Kristina
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
    Brandell, Daniel
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
    Why PEO as a binder or polymer coating increases capacity in the Li-S system2013In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 49, no 76, p. 8531-8533Article in journal (Refereed)
    Abstract [en]

    PEO, used either as a binder or a polymer coating, and PEGDME, used as an electrolyte additive, are shown to increase the reversible capacity of Li-S cells. The effect, in all three cases, is the same: an improved solvent system for the electrochemistry of sulfur species and suppression of cathode passivation on discharge. This constitutes a novel interpretation of the mechanistic behaviour of polyethers in the Li-S system, and sheds new light upon several previous studies.

  • 45. Li, Hairong
    et al.
    Koh, Teck Ming
    Hagfeldt, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Graetzel, Michael
    Mhaisalkar, Subodh G.
    Grimsdale, Andrew C.
    New donor-pi-acceptor sensitizers containing 5H-[1,2,5]thiadiazolo [3,4-f]isoindole-5,7(6H)-dione and 6H-pyrrolo[3,4-g]quinoxaline-6,8(7H)-dione units2013In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 49, no 24, p. 2409-2411Article in journal (Refereed)
    Abstract [en]

    Two new D-pi-A sensitizers (L101 and L102) incorporating 5H-[1,2,5]thiadiazolo [3,4-f] isoindole-5,7(6H)-dione and 6H-pyrrolo[3,4-g]quinoxaline-6,8(7H)-dione core structures were synthesized and tested in liquid dye-sensitized solar cells (DSCs). L102 achieved a promising power conversion efficiency (PCE) of 6.2% (AM 1.5, 100 mW cm(-2)).

  • 46. Li, Lin
    et al.
    Duan, Lele
    Wen, Fuyu
    Li, Can
    Wang, Mei
    Hagfeldt, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Sun, Licheng
    Visible light driven hydrogen production from a photo-active cathode based on a molecular catalyst and organic dye-sensitized p-type nanostructured NiO2012In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 48, no 7, p. 988-990Article in journal (Refereed)
    Abstract [en]

    A molecular device with a photocathode for hydrogen generation has been successfully demonstrated, based on an earth abundant and inexpensive p-type semiconductor NiO, an organic dye P1 and a cobalt catalyst Co1.

  • 47.
    Li, Lin
    et al.
    KTH, Organisk kemi / Organic Chemistry.
    Duan, Lele
    KTH, Organisk kemi / Organic Chemistry.
    Xu, Yunhua
    KTH, Organisk kemi / Organic Chemistry.
    Gorlov, Mikhail
    KTH, Organisk kemi / Organic Chemistry.
    Hagfeldt, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Physical Chemistry.
    Sun, Licheng
    KTH, Organisk kemi / Organic Chemistry.
    A photoelectrochemical device for visible light driven water splitting by a molecular ruthenium catalyst assembled on dye-sensitized nanostructured TiO22010In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 46, no 39, p. 7307-7309Article in journal (Refereed)
    Abstract [en]

    A photoelectrochemical device with a molecular Ru catalyst assembled via pH-modified Nafion on a dye-sensitized nanostructured TiO2 film as anode and a Pt foil as cathode has been successfully demonstrated to split water into O-2 and H-2 driven by visible light.

  • 48.
    Liao, Qinghua
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology, Structural Biology. Uppsala University, Science for Life Laboratory, SciLifeLab. Forschungszentrum Julich, Inst Complex Syst, Struct Biochem ICS 6, D-52425 Julich, Germany.
    Owen, Michael C.
    Masaryk Univ, CEITEC Cent European Inst Technol, Brno 62500, Czech Republic;Forschungszentrum Julich, Inst Complex Syst, Struct Biochem ICS 6, D-52425 Julich, Germany.
    Bali, Sofia
    Forschungszentrum Julich, Inst Complex Syst, Struct Biochem ICS 6, D-52425 Julich, Germany;New Mexico State Univ, 1780 E Univ Ave, Las Cruces, NM 88003 USA.
    Barz, Bogdan
    Forschungszentrum Julich, Inst Complex Syst, Struct Biochem ICS 6, D-52425 Julich, Germany;Heinrich Heine Univ Dusseldorf, Inst Theoret & Computat Chem, D-40225 Dusseldorf, Germany.
    Strodel, Birgit
    Forschungszentrum Julich, Inst Complex Syst, Struct Biochem ICS 6, D-52425 Julich, Germany;Heinrich Heine Univ Dusseldorf, Inst Theoret & Computat Chem, D-40225 Dusseldorf, Germany.
    A beta under stress: the effects of acidosis, Cu2+-binding, and oxidation on amyloid beta-peptide dimers2018In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 54, p. 7766-7769Article in journal (Refereed)
    Abstract [en]

    In light of the high affinity of Cu2+ for Alzheimer's A(1-42) and its ability to subsequently catalyze the formation of radicals, we examine the effects of Cu2+ binding, A oxidation, and an acidic environment on the conformational dynamics of the smallest A(1-42) oligomer, the A(1-42) dimer. Transition networks calculated from Hamiltonian replica exchange molecular dynamics (H-REMD) simulations reveal that the decreased pH considerably increased the -sheet content, whereas Cu2+ binding increased the exposed hydrophobic surface area, both of which can contribute to an increased oligomerization propensity and toxicity.

  • 49. Lin, Xiao
    et al.
    Wu, Mingxing
    Wang, Yudi
    Hagfeldt, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry.
    Ma, Tingli
    Novel counter electrode catalysts of niobium oxides supersede Pt for dye-sensitized solar cells2011In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 47, no 41, p. 11489-11491Article in journal (Refereed)
    Abstract [en]

    Synthesized niobium oxides (Nb(2)O(5) and NbO(2)) were applied for the first time as counter electrodes (CEs) in dye-sensitized solar cells (DSCs). The DSC using NbO(2) CE showed a higher power conversion efficiency of 7.88%, compared with that of the DSC using Pt CE (7.65%).

  • 50. Liu, Yizhu
    et al.
    Harlang, Tobias
    Canton, Sophie E.
    Chabera, Pavel
    Suarez-Alcantara, Karina
    Fleckhaus, Andre
    Vithanage, Dimali A.
    Göransson, Erik
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Corani, Alice
    Lomoth, Reiner
    Sundstrom, Villy
    Warnmark, Kenneth
    Towards longer-lived metal-to-ligand charge transfer states of iron(II) complexes: an N-heterocyclic carbene approach2013In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 49, no 57, p. 6412-6414Article in journal (Refereed)
    Abstract [en]

    A 9 ps (MLCT)-M-3 lifetime was achieved by a Fe-II complex based on C(NHC)<^>N(py)<^>C(NHC) pincer ligands. This is the longest known so far for any kind of complexes of this abundant metal, and increased by almost two orders of magnitude compared to the reference Fe-II bis-terpyridine complex.

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  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf