ICCAS OpenIR
Photo-induced intramolecular electron transfer of fluorescein-anthraquinone-methyl ester and detection of its charge-separated state
Zhang, HP; Zhou, YL; Zhang, MH; Shen, T; Li, YL; Zhu, DB
2003-03-01
Source PublicationCHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
ISSN0251-0790
Volume24Issue:3Pages:492-495
AbstractThe diad composed of fluorescein and 2-methyl-anthraquinone (FL-AQ) has been synthesized and its photophysical properties, have been examined by absorption, fluorescence spectroscopy and fluorescence lifetime. The charge separated state formed by photo-induced intramolecular electron transfer has been detected by nanosecond transient absorption spectroscopy for the first time. When FL is excited in solution, the photo-induced electron transter from FL to AQ proceed's efficiently. The rate constant and the efficiency of intramolecular electron transfer are 3. 95 x10(9) s(-1) and 95% respectively. Its charge-separated state lifetime is too short to detect obviously by transient Absorption spectroscopy. Adding of nanometersize TiO2 colloids to FL-AQ ethanol solution can prolong the lifetime of charge-separated state, so its transient absorption signal is recorded significantly. The decay lifetime of FL+. at 480 nm is 11. 1 mus. The decay lifetime of AQ(-.) at 60 nm is 8. 93 mus.
KeywordFluorescein-anthraquinone-methyl Ester Photo-induced Electron Transfer Nanosecond Transient Absorption Spectroscopy Titania Nanometer Colloids (Tio2)
Indexed BySCI
Language英语
WOS IDWOS:000182511900028
PublisherHIGHER EDUCATION PRESS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/81126
Collection中国科学院化学研究所
Corresponding AuthorZhang, MH
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zhang, HP,Zhou, YL,Zhang, MH,et al. Photo-induced intramolecular electron transfer of fluorescein-anthraquinone-methyl ester and detection of its charge-separated state[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2003,24(3):492-495.
APA Zhang, HP,Zhou, YL,Zhang, MH,Shen, T,Li, YL,&Zhu, DB.(2003).Photo-induced intramolecular electron transfer of fluorescein-anthraquinone-methyl ester and detection of its charge-separated state.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,24(3),492-495.
MLA Zhang, HP,et al."Photo-induced intramolecular electron transfer of fluorescein-anthraquinone-methyl ester and detection of its charge-separated state".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 24.3(2003):492-495.
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