uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
The impact of bromine substitution on the photophysical properties of a homodinuclear Ru-tpphz-Ru complex
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Photochemistry and Molecular Science, Molecular Biomimetics.
Show others and affiliations
2011 (English)In: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 516, no 1-3, 45-50 p.Article in journal (Refereed) Published
Abstract [en]

Ruthenium-polypyridine complexes play an important role as photosensitizers in supramolecular photocatalysis. Using multiple Ru-centers within a single supramolecular catalyst might be a promising path for improving its efficiency. The connection of several chromophores may, however, lead to direct interaction amongst individual photoactive centers, which is at the core of the work at hand. The work focuses on the photophysics of [(tbbpy)(2)Ru(3,16-Br(2)-tpphz)Ru(tbbpy)(2)](PF(6))(4) (1, tpphz = tetrapyrido[3,2-a: 2',3'-c: 3 '',2 ''-h:2''',3'''-j] phenazine, tbbpy = 4,4'-di-tert.-butyl-2,2'-bipyridine) and aims at detailing the impact of the bromine substituents on bridging ligand photoinduced intramolecular charge-transfer dynamics. It is shown that the introduction of the bromine reduces the driving force for intra-ligand charge-transfer steps and impacts exciton-exciton annihilation at high pump intensities.

Place, publisher, year, edition, pages
2011. Vol. 516, no 1-3, 45-50 p.
National Category
Chemical Sciences
URN: urn:nbn:se:uu:diva-162449DOI: 10.1016/j.cplett.2011.09.056ISI: 000296582400008OAI: oai:DiVA.org:uu-162449DiVA: diva2:460801
Available from: 2011-12-01 Created: 2011-11-30 Last updated: 2011-12-01Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Karnahl, Michael
By organisation
Molecular Biomimetics
In the same journal
Chemical Physics Letters
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 463 hits
ReferencesLink to record
Permanent link

Direct link