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  • 1.
    Abbrent, Sabina
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Lithium ion interactions in polymer gel electrolytes: Effect on structure, dynamics and morphology2000Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Polymer electrolytes are an essential part of the modern all-solid lithium battery. Several properties, such as mechanical and thermal stability, good ionic conductivity and compatibility with other materials used in the battery are necessary for a successful material.

    This thesis is focused on the ionic interactions in two electrolyte systems, based on a cross-linked polyethylene oxide (nona(ethylene oxide)dimethacrylate) or a fluorinated copolymer (polyvinylidene fluoride-hexafluoropropylene). Changes of thermal properties and morphology of and coordination in the electrolyte on addition of a lithium salt (LiTFSI) and different types and concentrations of solvents are studied. These properties are shown to control the ionic conductivity of the resulting material, influencing the conductivity mechanism.

    The presumably inert polyvinylidene fluoride is shown to undergo large structural changes, where polar conformations of the polymer backbone appear on salt addition, inducing a different crystalline phase. The lithium cation in the polyethylene oxide based electrolyte can coordinate either to the polymer chain or to the solvent. In for example systems containing propylene carbonate, the lithium ion binds more strongly to the polymer than to the solvent. This is in contrast to the systems with dimethyl sulphoxide where the ion prefers the solvent. This variation in coordination also strongly affects the mobility of the cation, reflected both in diffusion constants and in conductivity data.

    A combination of techniques was necessary to use for a deeper understanding of these complex materials. Coordination has been studied by FTIR and high resolution NMR, dynamics by NMR diffusion measurements and impedance spectroscopy, and morphology by diffraction techniques and DSC.

  • 2.
    Alonso, DA
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Nordin, SJM
    Roth, P
    Tarnai, T
    Andersson, PG
    Thommen, M
    Pittelkow, U
    2-azanorbornyl alcohols: Very efficient ligands for ruthenium-catalyzed asymmetric transfer hydrogenation of aromatic ketones2000In: JOURNAL OF ORGANIC CHEMISTRY, ISSN 0022-3263, Vol. 65, no 10, p. 3116-3122Article in journal (Refereed)
    Abstract [en]

    2-Azanorbornyl-derived amino alcohols were prepared and evaluated as ligands in the Ru(II)-catalyzed asymmetric transfer hydrogenation of aromatic ketones. To improve selectivity and rate, the structure of the ligand was optimized, Acetophenone was reduce

  • 3.
    Andersson, Anna S.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Lithium iron phosphates as cathode materials in lithium batteries2000Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Iron-based oxides are perhaps the only realistic cathode materials for electric and electric-hybrid vehicle applications. Two types of lithium iron phosphate, LiFePO4 andR-Li3Fe2(PO4)3, have been investigated for use within the lithium/lithium-ion polymer batteryconcept. The main techniques exploited have been: electrochemical cycling; X-ray andneutron diffraction - to study structural changes of the host material during lithiuminsertion/extraction; Mössbauer spectroscopy - to probe changes in the local structure of theFe atoms.

    Lithium extraction/insertion for LiFePO4, (olivine-type structure) has been followed by acombination of in situ X-ray diffraction and in situ Mössbauer spectroscopy. QuantitativeRietveld analysis of diffraction data has given good agreement with electrochemical andMössbauer spectroscopy data: ca. 20% of the LiFePO4 phase remains after charging. Possiblemechanisms to describe the capacity loss are proposed. High-temperature cycling (at 40oC and60oC) has shown the specific capacity to be markedly enhanced at higher temperatures.

    In situ Mössbauer spectroscopy has also been used to study the insertion of lithium into R-Li3Fe2(PO4)3. The two non-equivalent Fe3+ ions cannot be distinguished, whereas two typesof Fe2+ site appear on lithium insertion. Lithium appears to enter a site closer to one of theFe atoms. Elevated-temperature cycling shows the temperature dependence of R-Li3Fe2(PO4)3to be less marked than for the LiFePO4 system.

    The magnetic properties of R-Li3Fe2(PO4)3 have been investigated for the first time: a para- to antiferromagnetic transition is seen at 28 ~ K. Neutron powder diffraction shows that the Fe magnetic dipoles lie close to the ab-plane and are ferromagnetically aligned within an Fesheet perpendicular to the c-axis, but are antiferromagnetically coupled to adjacent sheets.

  • 4.
    Andersson, AS
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry.
    Kalska, B
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Jonsson, P
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Materials Science.
    Haggstrom, L
    Nordblad, P
    Tellgren, R
    Thomas, JO
    The magnetic structure and properties of rhombohedral Li3Fe2(PO4)(3)2000In: JOURNAL OF MATERIALS CHEMISTRY, ISSN 0959-9428, Vol. 10, no 11, p. 2542-2547Article in journal (Refereed)
    Abstract [en]

    Magnetic susceptibility measurements indicate that rhombohedral Li3Fe2(PO4)(3), obtained by ion exchange of monoclinic Na3Fe2(PO4)(3), exhibits a paramagnetic to antiferromagnetic transition at T-N approximate to 27 K. Curie-Weiss-like behaviour is observ

  • 5.
    Andersson, AS
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Thomas, JO
    Physics, Department of Physics.
    Kalska, B
    Haggstrom, L
    Thermal stability of LiFePO4-based cathodes2000In: ELECTROCHEMICAL AND SOLID STATE LETTERS, ISSN 1099-0062, Vol. 3, no 2, p. 66-68Article in journal (Refereed)
    Abstract [en]

    The capacity and cyclability of solid-state synthesized LiFePO4-based laminate cells of type <Li \ liq. el. \ LiFePO4> have been studied at 23, 40, and 60 degrees C. Larger capacities were obtained for cells cycled at the elevated temperatures. No evidenc

  • 6.
    Andersson, Mikael
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry. Analytisk kemi.
    Characterisation of the chemical and functional stability of chromatography media2000Licentiate thesis, monograph (Other scientific)
  • 7.
    Andersson, Y
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Larsson, T
    Nolang, B
    Rundqvist, S
    Neutron powder diffraction investigations of Nb-3(Al0.84Nb0.16) and Nb-3(Al0.84Nb0.16)H-2(2.52)2000In: JOURNAL OF ALLOYS AND COMPOUNDS, ISSN 0925-8388, Vol. 306, no 1-2, p. 193-196Article in journal (Refereed)
    Abstract [en]

    The crystal structures of Nb-3(Al0.84Nb0.16) and Nb-3(Al0.84Nb0.16)H-2(2.52) have been refined from neutron powder diffraction data using the Rietveld method. Nb-3(Al0.84Nb0.16) crystallizes in the cubic Cr3Si-type structure, space group Pm3n, with the un

  • 8.
    Aranyos, V
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry.
    Grennberg, Helena
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical Chemistry.
    Tingry, S
    Lindquist, Sten-Eric
    Hagfeldt, Anders
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical Chemistry.
    Electrochemical and photoelectrochemical investigation of new carboxylatobipyridine (bis-bipyridine)ruthenium(II) complexes for dye-sensitized TiO2 electrodes2000In: SOLAR ENERGY MATERIALS AND SOLAR CELLS, ISSN 0927-0248, Vol. 64, no 2, p. 97-114Article in journal (Refereed)
    Abstract [en]

    Methods for the preparation and purification of new carboxylated 2,2'-bipyridine ligands, two of which contain the new anchoring functionality malonate, and a reliable method for the synthesis of the corresponding [Ru(bpy)(2)(L)](PF6)(2) complexes are des

  • 9.
    Aranyos, Viviane
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Dyes and their adsorption onto nanocrystalline TiO2 electrodes: Synthesis, characterisation and applications2000Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The syntheses of two type of dyes (phthalocyanine and ruthenium tris-bipyridyl) are presented here. Their characterisation involves the use of cyclic voltammetry, NMR- and UV-visible spectroscopy. Once adsorbed on nanocrystalline TiO2 electrodes, their electrochemical, spectroelectrochemical and photoelectrochemical properties were investigated.

    In the first part, the syntheses of aryl-substituted phthalocyanines are described. The key intermediate, an aryl-substituted phthalonitrile, was prepared by a Pd(0)-catalysed Stille-coupling. The physical properties of tetra-(2,5-dirnetoxyphenyl)phthalocyanine (1a), tetraphenylphthalocyanine (1b) are discussed, An interesting display behaviour was characterised by spectroelectrochemistry in the case of 1b. Considering the system, unexpectedly high efficiencies of the resulting solar cells are observed for both dyes.

    The second part deals with two types of ruthenium tris-bipyridyl complexes. Syntheses of three carboxylated heteroleptic ruthenium complexes [Ru(bpy)2(bpy-R)](PF6)2 (bpy-R, R= (COOLi)n, n= 1, 2, 4) were synthesised for a study of the influence of the number of carboxylic groups on solar cell efficiencies. A lateral electron transfer mechanism for the dyes adsorbed on TiO2, is observed. Homoleptic and heteroleptic ruthenium complexes possessing the polymerisable groups vinyl, methoxyphenyl or thiophene were prepared for an investigation of the substituent effect on the dye-monolayer in the solar cell, both by electrochemistry and absorption spectroscopy. The methoxyphenyl-substituted complexes showed good polymerisation behaviour both at negative and at positive potentials. They also showed good resistance towards water when adsorbed onto TiO2 electrodes.

  • 10.
    Axrup, L
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Markides, K
    Nilsson, T
    Using miniature diode array NIR spectrometers for analysing wood chips and bark samples in motion2000In: JOURNAL OF CHEMOMETRICS, ISSN 0886-9383, Vol. 14, no 5-6, p. 561-572Article in journal (Refereed)
    Abstract [en]

    The chemical and physical properties of the wood chips entering the Kraft pulping process are of high interest for many different reasons. The most important one is the possibility to establish an effective and dynamic forward process control. The same is

  • 11.
    Baudin, Micael
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Dynamics of metal oxides surfaces and the connection to reactivity2000Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Many interesting chemical and physical phenomena which take place on surfaces of metaloxides rely on the material's ability to repeatedly alter the electronic surface structure. Formost metal oxides this functionality is connected to the degree of non-stoichiometry andthe presence of structural defects. In many catalytic applications, for example, the metaloxide surfaces display optimal performance at rather high temperatures, and it is thereforeessential to include thermal distortions in any investigation of the mechanisms behind thefunctionality. It can be expected that dynamical changes in the surface structure will drastically alter the electronic structure, and thereby also the catalytic characteristics of thesurface.

    For metal oxide surfaces, experimental as well as theoretical data on surface dynamics(at non-zero temperatures) are virtually non-existent. The very few MD simulation studiesthat exist in the literature have exclusively dealt with the effect of temperature on stability,structure and ordering.

    This thesis describes molecular dynamics simulations and subsequent quantum-chemicalcalculations of metal oxide surfaces, and how the surface properties vary with temperature,crystal face and depth from the surface for three structurally different materials. The surfaces studied are the low-index faces of MgO, α-Al2O3(0001), undoped and dopedlow-index CeO2 surfaces, and the α-Al2O3(0001,010)/CeO2(011,011) interface. The emphasis lieson dynamic quantities, and the ionic motion is analysed in terms of mean-square displacements, ion migrations, instantaneous ionic displacements, as well as vibrational densities-of-states. Other properties discussed include surface energies, interplanar relaxations, and pairdistribution functions. The thesis also discusses the implication of short-time atomic-leveldynamical changes on reactivity.

  • 12.
    Bergquist, J
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry.
    Andersen, O
    Westman, A
    Rapid method to characterize mutations in transthyretin in cerebrospinal fluid from familial amyloidotic polyneuropathy patients by use of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry2000In: Clin. Chem., Vol. 46, no 9, p. 1293-1300Article in journal (Refereed)
  • 13.
    Bergquist, J
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry.
    Ohlsson, B
    Tarkowski, A
    Nuclear factor-kB is involved in the catecholaminergic suppression of immunocompetent cells2000In: Neuroimmodulation, Vol. 917, p. 281-289Article in journal (Refereed)
  • 14.
    Bergstrom, M
    et al.
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Oncology, Radiology and Clinical Immunology.
    Juhlin, C
    Department of Surgical Sciences.
    Bonasera, TA
    Sundin, A
    Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Oncology, Radiology and Clinical Immunology.
    Rastad, J
    Department of Surgical Sciences.
    Åkerström, Göran
    Department of Surgical Sciences.
    Langstrom, B
    Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    PET imaging of adrenal cortical tumors with the 11beta-hydroxylase tracer11C-metomidate.2000In: J Nucl Med, Vol. 41, p. 275-Article in journal (Refereed)
  • 15. Bergström, M.
    et al.
    Fasth, K-J.
    Kilpatrick, G.
    Ward, P.
    Cable, K M.
    Wipperman, M D.
    Sutherland, D R.
    Långström, B.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Brain uptake and receptor binding of two (11C)labelled selective high affinity NK1-antagonists, GR203040 and GR205171 - PET studies in rhesus monkey.2000In: Neuropharmacology, ISSN 0028-3908, Vol. 39, no 4, p. 664-670Article in journal (Refereed)
  • 16.
    Berlin, S
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Engman, L
    A radical cyclization route to pyrrolidines based on conjugate addition to electron deficient phenylselenenylalkenes2000In: TETRAHEDRON LETTERS, ISSN 0040-4039, Vol. 41, no 19, p. 3701-3704Article in journal (Refereed)
    Abstract [en]

    alpha-Phenylselenenyl-alpha,beta-unsaturated esters, amides, ketones, nitriles and sulfones were prepared by zinc chloride promoted chloroselenation/dehydrochlorination of the corresponding alpha,beta-unsaturated compounds. After Michael addition of allyl

  • 17.
    Berlin, Stefan
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Engman, Lars
    A Radical Cyclization Route to Pyrrolidines Based on Conjugate Addition to Electron Deficient Phenylselenenylalkenes2000In: Tetrahedron Letters, Vol. 41, no 19, p. 3701-3704Article in journal (Refereed)
  • 18.
    Bertilsson, SK
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Andersson, PG
    A rigid dirhodium(II) carboxylate as an efficient catalyst for the asymmetric cyclopropanation of olefins2000In: JOURNAL OF ORGANOMETALLIC CHEMISTRY, ISSN 0022-328X, Vol. 603, no 1, p. 13-17Article in journal (Refereed)
    Abstract [en]

    The dirhodium(II) complex 7 of (1S,3R,4R)-2-(p-tert-butylphenylsulphonyl)-2-aza-bicycol[2.2.1]heptane-3-carboxylic acid (3) (or its enantiomer) was synthesised in four steps from cyclopentadiene, (R)- or (S)-phenylethylamine and methyl glyoxylate. Complex

  • 19.
    Besev, M
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Engman, L
    Pyrrolidines from beta-aminoselenides via radical cyclization. Diastereoselectivity control by the N-substituent2000In: ORGANIC LETTERS, ISSN 1523-7060, Vol. 2, no 11, p. 1589-1592Article in journal (Refereed)
    Abstract [en]

    [GRAPHICS] N-Allyl-beta-aminoalkyl phenyl selenides-precursors of 3-aza-5-hexenyl radicals-were prepared by ring opening of N-allylaziridines with benzeneselenol under acidic conditions or by sodium cyanoborohydride reduction of N-allylimines of alpha-phe

  • 20.
    Besev, Magnus
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Pyrrolidines via Radical Cyclization2000Licentiate thesis, monograph (Other scientific)
  • 21. Björkman, M.
    et al.
    Doi, H.
    Resul, B.
    Suzuki, M.
    Noyori, R.
    Watanabe, Y.
    Långström, B.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Synthesis of a 11C-labelled prostaglandin F2-alfa analogue using an improved method for Stille reactions with (11C)methyl iodide2000In: J.Labelled Compd. Radiopharm., ISSN 0362-4803, Vol. 43, no 14, p. 1327-1334Article in journal (Refereed)
  • 22. Björkman, M.
    et al.
    Långström, B
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Functionalization of 11C-labeled olefins via a Heck couplin reaction.2000In: Journal of the Chemical Society-Perkin Transactions, ISSN 1470-4358, Vol. 1, no 18, p. 3031-34Article in journal (Other scientific)
  • 23.
    Björkman, Margareta
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Palladium-promoted synthesis of compounds labelled with ¹¹C: Synthesis of ¹¹C-labelled prostacyclin and prostaglandin analogues2000Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Palladium-promoted reactions have been employed for the synthesis of compounds labelled with 11C (t½ = 20.3 min). The precursor [11C]methyl iodide was used in palladium-promoted cross-coupling reactions with organostannanes. With this method, large molecules with several functional groups, that is prostacyclin analogues, have been synthesised in up to 54 % decay-corrected radiochemical yield, calculated from [11C]methyl iodide. However, since this method did not afford reproducible yields, a second method where copper(I) was used as a co-catalyst with palladium, was developed. In the second method, a lower reaction temperature could be used and more reproducible yields were obtained. Employing this method, a prostaglandin analogue was synthesised in 34 % decay-corrected radiochemical yield calculated from [11C]methyl iodide. The total synthesis time was 30 min and the radiochemical purity was higher than 95 %. The specific radioactivity of the compounds obtained with these two methods was approximately 100 GBq/μmol.

    11C-Labelled aliphatic and aromatic alkenes were synthesised from [11C]methyl iodide in a Wittig olefination reaction using a published method. The 11C-labelled alkenes were reacted with five aromatic halidein Heck coupling reactions, producing five [11C]stilbene analogues in 34-40 % decay-corrected radiochemical yield. The radiochemical purity was higher than 95 % and the total synthesis timwas 40 min.

    11C-Labelled alkenes were also synthesised from 11C-labelled aldehydes. The 11C-labelled aldehydes were obtained from [11C]carbon monoxide in a palladium-mediated formylation of aryl iodides in 51-87 % radiochemical yield, determined by analytical LC and corrected for trappinefficiency. A range of palladium catalysts and hydride reagents were investigated. The labelled aldehydes were used in a subsequent Wittig olefination reaction where various Wittig salts were employed tsynthesise a variety of alkenes. The radiochemical yields were 30-76 %, determined by analytical LC.

  • 24. Brandt, P
    et al.
    Andersson, P G
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Exploring the chemistry of 3-substituted 2-azanorbornyls in asymmetric catalysis.2000In: Synlett, ISSN 0936-5214, no 8, p. 1092-1106Article in journal (Other scientific)
  • 25. Brandt, Peter
    et al.
    Andersson, Pher
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry. Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry I.
    Exploring the Chemistry of 3-Substituted 2-Azanorbornyls in Asymmetric Catalysis2000In: Synlett, no 8, p. 1092-1106Article in journal (Refereed)
    Abstract
  • 26.
    Brandt, Peter
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry I.
    Södergren, Mikael
    Andersson, Pher
    Department of Chemistry. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Biochemistry and Organic Chemistry, Organic Chemistry I.
    Norrby, Per-Ola
    Mechanistic Studies of Copper-Catalyzed Alkene Aziridination2000In: J. Am. Chem. Soc., ISSN 0002-7863, no 122, p. 8013-8020Article in journal (Refereed)
  • 27.
    Bratt, Katharina
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Secondary plant metabolites as defence against herbivores and oxidative stress: Synthesis, isolation and biological evaluation2000Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    In this thesis the isolation, synthesis and biological evaluation of natural defense compounds against herbivores or oxidative stress is discussed.

    The first part concerns the metabolites of platyphylloside ((5S)-5-hydroxy-1,7-bis-(4-hydroxyphenyl)-3-heptanone-5-O-β-D-glucopyranoside), a phenolic glucoside found in birch (Betula pendula) that possess digestibility inhibiting activity in herbivores. The structure-activity relationship of platyphylloside analogues were investigated regarding to stereochemistry and substitution pattern on the aromatic rings. The metabolites formed in vitro in rumen fluid were synthesized and the active metabolite determined as (R)-centrolobol (1,7-bis-(4-hydroxyphenyl)-3-heptanol). Treatment of mice and rats with rac-centrolobol did not effect either food intake or body weight. Effect of platyphylloside in moose was also investigated, and the results indicate that there was an in vivo digestibility reducing activity.

    The second part concerns naturally occurring antioxidants. Avenanthramides is a class of phenolic antioxidants found in oat (Avena sativa). Avenanthramides derived from either anthranilic acid or 5-hydroxyanthranilic acid were evaluated for their antioxidative capacity and quantified in oat extracts. Avenanthramides derived from 5-hydroxyanthranilic acid possessed higher activity than those from anthranilic acid. The order of reactivity depending on substitution pattern on the phenolic moiety was found to be 4-hydroxy < 4-hydroxy-3-methoxy < 3,5-dimethoxy-4-hydroxy and 3,4-dihydroxy. A synthesis towards antioxidative compounds such as 4-deoxycarbazomycin was developed.

    The third part concerns the isolation of compounds from Lodgepole pine (Pinus contorta) with antifeedant activity against pine weevil (Hylobius abietis). Two compounds possessing high activity were isolated and identified.

  • 28. Bregadze, V I.
    et al.
    Sivaev, I.
    Bruskin, A.
    Sjöberg, S.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Nesterov, V.
    Antipin, M.
    Synthesis of Schiff bases and monoalkylamino derivatives of closododecaborae(2-) anion2000In: Contemporary Boron ChemistryArticle in journal (Other scientific)
  • 29.
    Broddefalk, A
    et al.
    INORGANIC CHEMISTRY. Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Materials Science.
    James, P
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
    Liu, HP
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry.
    Kalska, B
    Andersson, Y
    Granberg, P
    Nordblad, P
    Haggstrom, L
    Eriksson, I
    Structural and magnetic properties of (Fe1-xMnx)3P (x < 0.25)2000In: PHYSICAL REVIEW B, ISSN 1098-0121, Vol. 61, no 1, p. 413-421Article in journal (Refereed)
    Abstract [en]

    Structural and magnetic properties of (Fe1-xMnx)(3)P compounds have been investigated by means of x-ray and neutron diffraction experiments, magnetization measurements, Mossbauer experiments, and first principles calculations. The Curie temperature of the

  • 30.
    Edström, K
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Herranen, M
    Thermal stability of the HOPG/liquid electrolyte interphase studied by in situ electrochemical atomic force microscopy2000In: JOURNAL OF THE ELECTROCHEMICAL SOCIETY, ISSN 0013-4651, Vol. 147, no 10, p. 3628-3632Article in journal (Refereed)
    Abstract [en]

    In situ atomic force microscopy (AFM) was used to follow temperature-dependent morphological changes at a highly oriented pyrolytic graphite (HOPG)/electrolyte interface. Cyclic voltammetry was performed on an HOPG crystal covered with an electrolyte [1 M

  • 31.
    Engman, L
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Kanda, T
    Gallegos, A
    Williams, R
    Powis, G
    Water-soluble organotellurium compounds inhibit thioredoxin reductase and the growth of human cancer cells2000In: ANTI-CANCER DRUG DESIGN, ISSN 0266-9536, Vol. 15, no 5, p. 323-330Article in journal (Refereed)
    Abstract [en]

    The thioredoxin system (NADPH, thioredoxin reductase/ thioredoxin) is important for cancer cell growth and inhibition of apoptosis and presents an attractive target for anticancer drug development. Thioredoxin reductase is a selenocysteine-containing flav

  • 32.
    Engqvist, H
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Materials Science. MATERIALS SCIENCE/TRIBOMATERIALS.
    Hogberg, H
    Chemistry, Department of Chemistry.
    Botton, GA
    Ederyd, S
    Axen, N
    Tribofilm formation on cemented carbides in dry sliding conformal contact2000In: WEAR, ISSN 0043-1648, Vol. 239, no 2, p. 219-228Article in journal (Refereed)
    Abstract [en]

    The friction properties and the tribofilm formation of a binderless cemented carbide and two conventional cemented carbides have been evaluated in an unlubricated sliding contact in either air or nitrogen surroundings. A continuously varied normal load an

  • 33.
    Forngren, BH
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Tyrefors, N
    Markides, KB
    Langstrom, B
    Determination of raclopride in human plasma by on-column focusing packed capillary liquid chromatography-electrospray ionisation mass spectrometry2000In: JOURNAL OF CHROMATOGRAPHY B, ISSN 0378-4347, Vol. 748, no 1, p. 189-195Article in journal (Refereed)
    Abstract [en]

    A packed capillary liquid chromatography-electrospray ionisation mass spectrometry method was developed for the quantitative determination of raclopride in human plasma samples. Plasma samples containing the drug and its isotopically substituted analogue

  • 34.
    Forngren, BH
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Yngve, U
    Forngren, T
    Langstrom, B
    Determination of specific radioactivity for Br-76-labeled compounds measuring the ratio between Br-76 and Br-79 using packed capillary liquid chromatography mass spectrometry2000In: NUCLEAR MEDICINE AND BIOLOGY, ISSN 0969-8051, Vol. 27, no 8, p. 851-853Article in journal (Refereed)
    Abstract [en]

    Packed capillary liquid chromatography with electrospray mass spectrometry was used for direct determination of the specific radioactivity by calculation of isotope ratios between the Br-76- and Br-76-labeled analogues of N-((3 aminomethyl)benzyl) 4-bromo

  • 35.
    Forsgren, K
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Hårsta, A
    Department of Materials Chemistry.
    In situ preparation of Ti-containing Ta2O5 films by halide CVD2000Conference paper (Refereed)
  • 36.
    Forsgren, K., Sundqvist, J., Hårsta, A., Kukli, K., Aarik, J. and Aidla, A.
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Sundqvist, J
    Hårsta, A
    Kukli, K
    Aarik, J
    Aidla, A
    Characterisation of Ta2O5 films prepared by ALCVD2000In: Chemical Vapor Deposition, Fifteenth Int. Conf., 2000, p. 645-Conference paper (Refereed)
  • 37.
    Frank, A
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Anke, M
    Danielsson, R
    Experimental copper and chromium deficiency and additional molybdenum supplementation in goats. I. Feed consumption and weight development2000In: The Science of Total Environment, no 249, p. 133-142Article in journal (Refereed)
  • 38.
    Frank, A
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Danielsson, R
    Jones, B
    Experimental copper and chromium deficiency and additional molybdenum supplementation in goats. II. Concentrations of trace aqnd minor elements in liver, kidneys and ribs: haematology and clinical chemistry2000In: The Science of Total Environment, no 249, p. 143-170Article in journal (Refereed)
  • 39.
    Frank, A
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Danielsson, R
    Jones, B
    The "mysterious" disease in Swedish moose. Concentrations of trace elements in liver and kidneys and clinical chemistry. Comparison with experimental molybdenosis and copper deficiency in the goat2000In: The Science of Total Environment, no 249, p. 107-122Article in journal (Refereed)
  • 40.
    Frank, A
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Sell, D R
    Danielsson, R
    Fogarty, J F
    Monnier, V M
    A syndrome of molybdenosis, copper deficiency, and type 2 diabetes in the moose population of south-west Sweden2000In: The Science of Total Environment, no 249, p. 123-131Article in journal (Refereed)
  • 41.
    Frisell, H
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Engman, L
    Molecular modelling of some para-substituted aryl methyl telluride and diaryl telluride antioxidants2000In: JOURNAL OF MOLECULAR STRUCTURE, ISSN 0022-2860, Vol. 526, p. 103-114Article in journal (Refereed)
    Abstract [en]

    Quantum mechanical calculations using the 3-21G(d) basis-set were performed on some p-substituted diaryl tellurides and aryl methyl tellurides, and the corresponding cationic radicals of these compounds. Calculated relative radical stabilization energies

  • 42.
    Frykholm P., Andersson J L., Valtysson J., Silander H C., Hillered L., Persson L., Olsson Y., Yu W R., Westerberg G., Watanabe Y., Långström B., Enblad P.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    A metacolic threshold of irreversible ischemia demonstrated by PET in a middle cerebral artery occlusion-reperfusion primate model2000Article in journal (Other scientific)
  • 43. Gedda, L
    et al.
    Ghaneolhosseini, H
    Nilsson, P
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Nyholm, K
    Pettersson, J
    Sjöberg, S
    Carlsson, J
    The influence of lipophilicity on binding of boronated DNA-intercalating compounds in human glioma speroids2000In: Anti-Cancer Drug Design, no 15, p. 277-286Article in journal (Refereed)
  • 44.
    Graves, S W
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Markides, K E
    Hollenberg, N K
    Application of supercritical fluid chromatography to characterize a labile digitalis-like factor2000In: Hypertension, no 36, p. 1059-1064Article in journal (Refereed)
  • 45.
    Haggstrom, L
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Physics, Department of Physics.
    James, P
    Chemistry, Department of Chemistry.
    Eriksson, O
    Liu, HP
    Trosko, M
    Szymanski, K
    Dobrzynski, L
    Hyperfine interaction study of (Fe1-xCox)(3)P compounds2000In: PHYSICAL REVIEW B, ISSN 1098-0121, Vol. 61, no 10, p. 6798-6804Article in journal (Refereed)
    Abstract [en]

    The magnetic and ordering properties of (Fe1-xCox)(3)P (x=0, 0.1, 0.2, and 0.33) compounds have been studied by Fe-57 Mossbauer technique. These investigations show that Co preferentially substitutes Fe in two out of three metal sites. Variations of the m

  • 46.
    Harden, Adrian
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Synthesis and Applications of C2-Symmetric Bis (Aziridines) in Asymmetric Synthesis2000Licentiate thesis, monograph (Other scientific)
  • 47.
    Hedberg, C
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Pinho, P
    Roth, P
    Andersson, PG
    Diels-Alder reaction of heterocyclic imine dienophiles2000In: JOURNAL OF ORGANIC CHEMISTRY, ISSN 0022-3263, Vol. 65, no 9, p. 2810-2812Article in journal (Refereed)
  • 48.
    Hedberg, Christian
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Pinho, Pedro
    Roth, Peter
    Andersson, Pher G.
    Diels-Alder Reaction of Heterocyclic Imine Dienophiles2000In: Journal of Organic Chemistry, ISSN 0022-3263, Vol. 65, no 9, p. 2810-2812Article in journal (Refereed)
  • 49.
    Heldin, E
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Ion-Pair Chromatography2000In: Academic Press, p. 2358-2368Article in journal (Refereed)
  • 50.
    Henssen, Cecile
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Chemistry.
    Synthesis of DNA Intercalating Compounds for Nuclide Therapy2000Licentiate thesis, monograph (Other scientific)
123 1 - 50 of 116
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