Nanosecond time-resolved studies of long-lived photoinduced charge separation in the dyad fluorescein-anthraquinone-methyl ester adsorbed on TiO2 colloids
文献类型：期刊论文
| 作者 | Zhang, HP; Zhou, YL; Zhang, MH; Shen, T; Xiang, JF; Feng, J |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2003-07-15 |
| 卷号 | 263期号:2页码:669-673 |
| 关键词 | Photoinduced Electron Transfer Fluorescein Anthraquinone Colloidal Tio2 Nanosecond Transient Absorption Spectroscopy |
| ISSN号 | 0021-9797 |
| DOI | 10.1016/S0021-9797(03)00337-0 |
| 英文摘要 | A dyad composed of fluorescein and 2-methyl-anthraquinone (FL-AQ) was synthesized and its photophysical properties were examined by absorption, fluorescence spectroscopy, and fluorescence lifetime. The charge-separated state formed by photoinduced intramolecular electron transfer was detected by nanosecond transient absorption spectroscopy for the first time. When FL is excited in solution, the photoinduced electron transfer from FL to AQ proceeds efficiently. The rate constant and the efficiency of intramolecular electron transfer are 3.95 x 10(9) s(-1) and 95%, respectively. Its charge-separated state lifetime is too short to detect by transient absorption spectroscopy. Adding nanometer colloidal TiO2 to an FL-AQ ethanol solution prolongs the lifetime of the charge-separated state, so its transient absorption signal is recorded significantly. The lifetimes of FL+. at 480 nm and AQ(-.) at 560 nm in the FL-AQ/TiO2 colloidal system are 11.1 and 8.93 mus, respectively. (C) 2003 Elsevier Inc. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000183927000040 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/80351]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Shen, T |
| 作者单位 | Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, HP,Zhou, YL,Zhang, MH,et al. Nanosecond time-resolved studies of long-lived photoinduced charge separation in the dyad fluorescein-anthraquinone-methyl ester adsorbed on TiO2 colloids[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2003,263(2):669-673. |
| APA | Zhang, HP,Zhou, YL,Zhang, MH,Shen, T,Xiang, JF,&Feng, J.(2003).Nanosecond time-resolved studies of long-lived photoinduced charge separation in the dyad fluorescein-anthraquinone-methyl ester adsorbed on TiO2 colloids.JOURNAL OF COLLOID AND INTERFACE SCIENCE,263(2),669-673. |
| MLA | Zhang, HP,et al."Nanosecond time-resolved studies of long-lived photoinduced charge separation in the dyad fluorescein-anthraquinone-methyl ester adsorbed on TiO2 colloids".JOURNAL OF COLLOID AND INTERFACE SCIENCE 263.2(2003):669-673. |
入库方式： OAI收割
来源：化学研究所
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