|
|||||
|
|
Photoinduced Electron Transfer Reactions of Ruthenium(II)-Complexes Containing Amino Acid with Quinones |
|
| Authors: | Rajkumar Eswaran Swarnalatha Kalayar Muthu Mareeswaran Paulpandian Rajagopal Seenivasan |
| Affiliation: | 1. School of Chemistry, Madurai Kamaraj University, Madurai, 625 021, India 2. Department of Chemistry, Vel Tech University, Avadi, Chennai, India 3. Department of Chemistry, Manonmaniam Sundaranar University, Thirunelveli, India 4. Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea |
| Abstract: | With the aim of mimicking, at basic level the photoinduced electron transfer process in the reaction center of photosystem II, ruthenium(II)-polypyridyl complexes, carrying amino acids were synthesized and studied their photoinduced electron transfer reactions with quinones by steady state and time resolved measurements. The reaction of quinones with excited state of ruthenium(II)-complexes, I–V in acetonitrile has been studied by luminescence quenching technique and the rate constant, kq, values are close to the diffusion controlled rate. The detection of the semiquinone anion radical in this system using time-resolved transient absorption spectroscopy confirms the electron transfer nature of the reaction. The semiclassical theory of electron transfer has been successfully applied to the photoluminescence quenching of Ru(II)-complexes with quinones. Transient absorption spectra of complex IV in the presence of Chloranil |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |