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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
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*; Li ZT(黎占亭)
2002
发表期刊Chin. J. Chem.
ISSN1001-604X
卷号20期号:2页码:160-167
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.
学科领域金属有机化学
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
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收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.sioc.ac.cn/handle/331003/9838
专题金属有机化学国家重点实验室
通讯作者Li ZT(黎占亭)
推荐引用方式
GB/T 7714
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.
APA 陈英奇.,王晓钟.,蒋锡夔.,史济良.,施敏.,...&黎占亭.(2002).Effects of self-coiling of organic molecules on intramolecular exciplex formation and fluorescence quenching in DX-H^2O solvent system.Chin. J. Chem.,20(2),160-167.
MLA 陈英奇,et al."Effects of self-coiling of organic molecules on intramolecular exciplex formation and fluorescence quenching in DX-H^2O solvent system".Chin. J. Chem. 20.2(2002):160-167.
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