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题名: Fluorescence quenching phenomena facilitated by excited-state hydrogen bond strengthening for fluorenone derivatives in alcohols
作者: Liu, Yu-Hui1;  Zhao, Guang-Jiu1;  Li, Guang-Yue1;  Han, Ke-Li1
关键词: Hydrogen bonding ;  Excited-state ;  Fluorescence quenching ;  TD-DFT ;  Internal conversion
刊名: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
发表日期: 2010-01-25
DOI: 10.1016/j.jphotochem.2009.11.012
卷: 209, 期:2-3, 页:181-185
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Spectroscopic studies on benzo[b]fluorenone (BF) solvatochromism in several aprotic and alcoholic solvents have been performed to investigate the fluorescence quenching by hydrogen bonding and proposed a weaker ability to form intermolecular hydrogen bond of BF than fluorenone (FN). In this work, the time-dependent density functional theory (TD-DFT) method was used to study the excited-state hydrogen bonding of both FN and BF in ethanol (EtOH) solvent. As a result, it is demonstrated by our theoretical calculations that the hydrogen bond of BF-EtOH complex is almost identical with that of FN-EtOH. Moreover, the fluorescence quantum yields of FN and BF in the alcoholic solvent is efficiently dependent on the energy gap between the lowest excited singlet state (fluorescent state) and ground state, which can be used to explain the fluorescence quenching by the excited-state hydrogen bond strengthening. (C) 2009 Elsevier B.V. All rights reserved.
关键词[WOS]: RADIATIONLESS DEACTIVATION ;  LARGE MOLECULES ;  HIGH-PRESSURE ;  AMINOFLUORENONES ;  TRANSITIONS ;  CHROMOPHORE ;  MECHANISM ;  DYNAMICS ;  SOLVENTS ;  METHANOL
语种: 英语
WOS记录号: WOS:000274680400013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142076
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Liu, Yu-Hui,Zhao, Guang-Jiu,Li, Guang-Yue,et al. Fluorescence quenching phenomena facilitated by excited-state hydrogen bond strengthening for fluorenone derivatives in alcohols[J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY,2010,209(2-3):181-185.
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