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学科主题: 金属有机化学
题名: Effects of self-coiling of organic molecules on intramolecular exciplex formation and fluorescence quenching in DX-H^2O solvent system
其他题名: Effects of self-coiling of organic molecules on intramolecular exciplex formation and fluorescence quenching in DX-H^2O solvent system
作者: Chen YQ(陈英奇) ; Wang XZ(王晓钟) ; Jiang XK(蒋锡夔) ; Shi JL(史济良) ; Shi M(施敏) ; 黎占亭*
通讯作者: 黎占亭
刊名: Chin. J. Chem.
发表日期: 2002-01-01
卷: 20, 期:2, 页:160-167
收录类别: SCI
部门归属: 中国科学院上海有机化学研究所物理有机化学实验室
英文摘要: Effects of self-coiling of organic molecules on intramolecular exciplex formation of compound I, in which the carbazole chromophore and terephthalic acid methylester acceptor group are linked by one (CH^2)^10 chain, and the decrease of the fluorescence intensities of compounds II, III, and IV, in which the carbazole chromophore and 3,5-dinitobenzoate are connected by one aliphatic chain of (CH^2)^10(II), (CH^2)^12 (III), or (CH^2)^4(IV), have been studiend in the dioxane(DX)-H^2Obinary system. The results show that self-coiling of organic molecules in DX-H^2O facilitates intramolecular exciplex formation of I and induces the decrease of fluorescence intensities of II, because of the procimity effect brought about by selfcoiling of organic molecules under dydrophobic-lipophilic interaction (HLI)between the excited carbazole chromophore and the acceptor. Since the similar effects are observed even when the concentrations of the probes are less than their CAgCs(critical aggregate concentrations) in the DX-H^2O mixture with the sam φvalues, formaion of the intermolecular exciplex has been exchuded. The effects are found to be strongly depended on φ values, indicating that they are mainly driven by HLI. The properties of the acceptors can also affect the intramolecular exciplex formation. With terephthalic acid methylester moiety as the acceptor, the carbazole chromophore exhibits the fluorescence spectra of the exciplex, while with 3,5-dinitrobenzoate moiety as the acceptor, only the fluorescence spectra of excited carbazolyl chromophore are observed.
语种: 英语
相关网址: 查看原文
内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/9838
Appears in Collections:金属有机化学国家重点实验室_期刊论文

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Recommended Citation:
Chen YQ,Wang XZ,Jiang XK,et al. Effects of self-coiling of organic molecules on intramolecular exciplex formation and fluorescence quenching in DX-H^2O solvent system[J]. Chin. J. Chem.,2002,20(2):160-167.
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