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Linear Multinuclear Ru II Photosensitizers
Author(s) -
Vaduvescu Simona,
Potvin Pierre G.
Publication year - 2004
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200300321
Subject(s) - chemistry , cyclic voltammetry , photochemistry , excited state , metal , quenching (fluorescence) , spectroscopy , electrochemistry , ruthenium , phenylene , ultraviolet visible spectroscopy , nuclear magnetic resonance spectroscopy , terpyridine , stereochemistry , fluorescence , organic chemistry , catalysis , electrode , physics , polymer , quantum mechanics , nuclear physics
Four ditopic bridging ligands, containing 2,2′:6′,2′′‐terpyridine and 2,6‐dipyrazinylpyridine (dpp) metal‐binding units attached through p ‐ or m ‐phenylene linkages, have been incorporated into eight mono‐, di‐ and trinuclear linear Ru II complexes. These were characterized by UV/Vis spectroscopy and cyclic voltammetry, and by their ability to undergo light‐induced electron transfers to methylviologen. The dpp‐bearing complexes were more difficult to prepare but were superior sensitizers, a fact attributable to longer excited state lifetimes and an electrostatically favored reductive quenching pathway. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)