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Photo-induced intermolecular electron transfer - the effect of acceptor molecular structures
杨延强
Author NameAffiliationE-mail
杨延强 Department of Physics, Harbin institute of Technology, Harbin 150001, China yqyang@hit.edu.cn 
Abstract:
Photo-induced electron transfer (PIET) versus molecular structure of acceptors are investigated using ultrafast time-resolved transient grating (TG) spectroscopy. Typical laser dyes Rhodamine101 (Rh101) and Rhodamine6G (Rh6G) in electron donor solvent-aniline (AN) are adopted as the objects. The forward electron transfer (FET) time constant from AN to the excited singlet state of two Rhodamine dyes and subsequent back electron transfer (BET) from two dyes to AN are measured. The experimental results denote that Rh6G present faster ET rates with AN in both FET and BET processes. With chemical calculation and qualitative analysis, it is found that the flexible molecular geometry of Rh6G led to stronger electron coupling with donor solvent and further give rise to larger ET rates.
Key words:  electron transfer, molecular structure, back electron transfer PACS: 78.45.+h, 78.47.jj, 82.39.Jn, 82.53.Kp
FundProject:
Photo-induced intermolecular electron transfer - the effect of acceptor molecular structures
杨延强
摘要:
Photo-induced electron transfer (PIET) versus molecular structure of acceptors are investigated using ultrafast time-resolved transient grating (TG) spectroscopy. Typical laser dyes Rhodamine101 (Rh101) and Rhodamine6G (Rh6G) in electron donor solvent-aniline (AN) are adopted as the objects. The forward electron transfer (FET) time constant from AN to the excited singlet state of two Rhodamine dyes and subsequent back electron transfer (BET) from two dyes to AN are measured. The experimental results denote that Rh6G present faster ET rates with AN in both FET and BET processes. With chemical calculation and qualitative analysis, it is found that the flexible molecular geometry of Rh6G led to stronger electron coupling with donor solvent and further give rise to larger ET rates.
关键词:  electron transfer, molecular structure, back electron transfer PACS: 78.45.+h, 78.47.jj, 82.39.Jn, 82.53.Kp
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