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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)
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY B
2007-08-02
DOI10.1021/jp0734530
Volume111Issue:30Pages:8940-8945
Indexed BySCI
SubtypeReview
Department1100
Funding Project1101
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordSTATE PROTON-TRANSFER ; EXCITED-STATE ; CHARGE-TRANSFER ; SUPER PHOTOACIDS ; VIBRATIONAL SPECTROSCOPY ; SPECTRAL PROPERTIES ; SOLVATION DYNAMICS ; DONATING SOLVENTS ; ANTHRANILIC ACID ; BONDED COMPLEXES
AbstractSolute-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.
Language英语
URL查看原文
WOS IDWOS:000248315700037
Citation statistics
Cited Times:514[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/98681
Collection中国科学院大连化学物理研究所
Corresponding AuthorHan KL(韩克利); Han KL(韩克利)
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China
Recommended Citation
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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