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：

暂无

中图分类号：

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.

引用

页码：643 / 648

页数：5

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