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Electron transfer reactions of ruthenium(II)–bipyridine complexes carrying tyrosine moiety with quinones
Author(s) -
Mareeswaran Paulpandian Muthu,
Rajkumar Eswaran,
Sathish Veerasamy,
Rajagopal Seenivasan
Publication year - 2014
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2617
Subject(s) - ruthenium , moiety , chemistry , bipyridine , quenching (fluorescence) , photochemistry , electron transfer , fluorescence , 2,2' bipyridine , stereochemistry , organic chemistry , catalysis , physics , quantum mechanics , crystal structure
Three ruthenium(II)–bipyridine complexes carrying a tyrosine moiety were synthesized and photophysical and electron transfer studies with quinones were carried out using absorption and emission spectral techniques. The binding efficiency of quinones with ruthenium(II)–bipyridine complexes was also studied using these techniques. The binding efficiency was moderate and similar for all complexes with all quinones. The quenching modes were also similar and efficient for all complexes with all quinones. The quenching processes were diffusion controlled. The rate of electron transfer was calculated using semiclassical theory. Copyright © 2013 John Wiley & Sons, Ltd.