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

来源：

ANALYTICAL SCIENCES | 2014年 / 30卷 / 06期

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

页码：643 / 648

页数：6

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