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

被引：0
|
作者：
Hiroya Kano
Daichi Tanoue
Hiroaki Shimaoka
Kohei Katano
Takeshi Hashimoto
Hideyuki Kunugita
Shinkoh Nanbu
Takashi Hayashita
Kazuhiro Ema
机构：
[1] Sophia University,Department of Engineering and Applied Science, Faculty of Science and Technology
[2] Sophia University,Department of Materials and Life Sciences, Faculty of Science and Technology
来源：
Analytical Sciences | 2014年 / 30卷
关键词：
Sugar recognition; time-resolved photoluminescence measurements; photoinduced electron transfer; cyclodextrin;
D O I：
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学科分类号：
摘要：
An inclusion complex consisting of a boronic acid fluorophore (C1-APB) and β-cyclodextrin (β-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 (α-CyD, β-CyD) under different water-dimethyisulfoxide (DMSO) concentration conditions. We found that the CyDs interacting with the boronic acid moiety completely inhibits PET quenching and increases the monomer fluorescence intensity.
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页码：643 / 648
页数：5
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