Effects of Cyclodextrins on Intramolecular Photoinduced Electron Transfer in a Boronic Acid Fluorophore

被引:8
|
作者
Kano, Hiroya [1 ]
Tanoue, Daichi [1 ]
Shimaoka, Hiroaki [1 ]
Katano, Kohei [2 ]
Hashimoto, Takeshi [2 ]
Kunugita, Hideyuki [1 ]
Nanbu, Shinkoh [2 ]
Hayashita, Takashi [2 ]
Ema, Kazuhiro [1 ]
机构
[1] Sophia Univ, Fac Sci & Technol, Dept Engn & Appl Sci, Chiyoda Ku, Tokyo 1028554, Japan
[2] Sophia Univ, Fac Sci & Technol, Dept Mat & Life Sci, Chiyoda Ku, Tokyo 1028554, Japan
关键词
Sugar recognition; time-resolved photoluminescence measurements; photoinduced electron transfer; cyclodextrin; PHENYLBORONIC ACID; BETA-CYCLODEXTRIN; FLUORESCENCE; WATER; SENSORS; RECOGNITION; SACCHARIDES; COMPLEXES; PROBES; CHEMISTRY;
D O I
10.2116/analsci.30.643
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
An inclusion complex consisting of a boronic acid fluorophore (C1-APB) and beta-cyclodextrin (beta-CyD) acts as a supramolecular sugar sensor whose response mechanism is based on photoinduced electron transfer (PET) from the excited pyrene to the boronic acid. We have investigated the PET process in C1-APB/CyD complexes by using time-resolved photoluminescence (TRPL) measurements at room temperature, and have succeeded in estimating the electron-transfer time to be about 1 ns. We have also studied the effects of CyDs on the PET process by comparing two kinds of CyDs (alpha-CyD, beta-CyD) under different water-dimethylsulfoxide (DMSO) concentration conditions. We found that the CyDs interacting with the boronic acid moiety completely inhibits PET quenching and increases the monomer fluorescence intensity.
引用
收藏
页码:643 / 648
页数:6
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