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Site-selective photoinduced electron transfer from alcoholic solvents to the chromophore facilitated by hydrogen bonding: A new fluorescence quenching mechanism
Zhao, Guang-Jiu; Liu, Jian-Yong; Zhou, Li-Chuan; Han, Ke-Li; Han KL(韩克利); Han KL(韩克利)
刊名JOURNAL OF PHYSICAL CHEMISTRY B
2007-08-02
DOI10.1021/jp0734530
111期:30页:8940-8945
收录类别SCI
文章类型Review
部门归属1100
项目归属1101
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]STATE PROTON-TRANSFER ; EXCITED-STATE ; CHARGE-TRANSFER ; SUPER PHOTOACIDS ; VIBRATIONAL SPECTROSCOPY ; SPECTRAL PROPERTIES ; SOLVATION DYNAMICS ; DONATING SOLVENTS ; ANTHRANILIC ACID ; BONDED COMPLEXES
英文摘要Solute-solvent intermolecular photoinduced electron transfer (ET) reaction was proposed to account for the drastic fluorescence quenching behaviors of oxazine 750 (OX750) chromophore in protic alcoholic solvents. According to our theoretical calculations for the hydrogen-bonded OX750-(alcohol)(n) complexes using the time-dependent density functional theory (TDDFT) method, we demonstrated that the ET reaction takes place from the alcoholic solvents to the chromophore and the intermolecular ET passing through the site-specific intermolecular hydrogen bonds exhibits an unambiguous site selectivity. In our motivated experiments of femtosecond time-resolved stimulated emission pumping fluorescence depletion spectroscopy (FS TR SEP FD), it could be noted that the ultrafast ET reaction takes place as fast as 200 fs. This ultrafast intermolecular photoinduced ET is much faster than the diffusive solvation process, and even significantly faster than the intramolecular vibrational redistribution (IVR) process of the OX750 chromophore. Therefore, the ultrafast intermolecular ET should be coupled with the hydrogen-bonding dynamics occurring in the sub-picosecond time domain. We theoretically demonstrated for the first time that the selected hydrogen bonds are transiently strengthened in the excited states for facilitating the ultrafast solute-solvent intermolecular ET reaction.
语种英语
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WOS记录号WOS:000248315700037
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/98681
专题中国科学院大连化学物理研究所
通讯作者Han KL(韩克利); Han KL(韩克利)
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China
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GB/T 7714
Zhao, Guang-Jiu,Liu, Jian-Yong,Zhou, Li-Chuan,et al. Site-selective photoinduced electron transfer from alcoholic solvents to the chromophore facilitated by hydrogen bonding: A new fluorescence quenching mechanism[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2007,111(30):8940-8945.
APA Zhao, Guang-Jiu,Liu, Jian-Yong,Zhou, Li-Chuan,Han, Ke-Li,韩克利,&韩克利.(2007).Site-selective photoinduced electron transfer from alcoholic solvents to the chromophore facilitated by hydrogen bonding: A new fluorescence quenching mechanism.JOURNAL OF PHYSICAL CHEMISTRY B,111(30),8940-8945.
MLA Zhao, Guang-Jiu,et al."Site-selective photoinduced electron transfer from alcoholic solvents to the chromophore facilitated by hydrogen bonding: A new fluorescence quenching mechanism".JOURNAL OF PHYSICAL CHEMISTRY B 111.30(2007):8940-8945.
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