Intramolecular Interactions in the Ground and Excited States of 1,3-Bichromophoric Propanes in the Aqueous Cyclodextrin Solutions
Intramolecular Interactions in the Ground and Excited States of 1,3-Bichromophoric Propanes in the Aqueous Cyclodextrin Solutions
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环糊精水溶液中 1,3-双发色丙烷基态和激发态的分子内相互作用
DOI：
10.1246/bcsj.57.2261
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
Y. Fujiwara
中科院分区：
文献类型：
--
作者：
M. Itoh;Y. Fujiwara
通过稳态荧光光谱和荧光寿命的测定，研究了几种1，3-二发色丙烷在环糊精水溶液中的荧光增强现象。在γ-环糊精存在下，1-（9，10-二氰基-2-蒽基）-3-（1-和2-萘基）丙烷在基态产生分子内电荷转移络合物荧光。1，3-二-2-萘基丙烷和1-（1-萘基）-3-（2-萘基）丙烷在β-和γ-环糊精水溶液中不仅显示出分子内激基缔合物荧光，而且还显示出基态复合物荧光。在基态和激发态的分子内相互作用似乎是由于它们的分子内几何限制在非凡的非极性腔的环糊精。
The enhanced fluorescence of several 1,3-bichromophoric propanes in aqueous cyclodextrin solutions has been investigated by the steady-state fluorescence spectra and fluorescence lifetimes. 1-(9,10-Dicyano-2-anthryl)-3-(1- and 2-naphthyl)propanes exhibit the intramolecular charge transfer complex fluorescence generated in the ground state in the presence of γ-cyclodextrin. Two bichromophoric propanes, 1,3-di-2-naphthylpropane and 1-(1-naphthyl)-3-(2-naphthyl)propane, in the aqueous β- and γ-cyclodextrin solutions show not only the intramolecular excimer but also the ground state complex fluorescences, though the ground state complex formation of dinaphthylpropane has never been observed in the homogeneous solution even at low temperature. The intramolecular interactions in the ground and excited states seem to be attributable to their intramolecularly geometrical restriction in the extraordinary nonpolar cavity of the cyclodextrins.