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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：中国化学会创始会士、常务理事，中国化工学会会士
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：化工学院
学科：应用化学. 精细化工. 化学生物学
办公地点：大连理工大学西部校区知顺楼F-202#
http://peng-group.dlut.edu.cn/
联系方式：大连理工大学西部校区知顺楼F-202 辽宁省大连市高新区凌工路2号，大连116024 课题组网址：http://peng-group.dlut.edu.cn/ E-mail: pengxj@dlut.edu.cn
电子邮箱：pengxj@dlut.edu.cn
New water-soluble dicyano-stilbene dyes: One and two-photon fluorescence and photo-response to BSA
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论文类型：期刊论文
发表时间：2011-06-01
发表刊物：4th International Workshop on Organic Photoswitchable Multifunctional Molecules and Materials
收录刊物：SCIE、EI、CPCI-S
卷号：89
期号：3,SI
页面范围：330-335
ISSN号：0143-7208
关键字：Fluorescence; Dye; Two-photon absorption action cross section; Molecular switch; Bovine serum albumin; Stainer
摘要：Two novel quadrapolar stilbene fluorescent dyes with CN groups (DCNs) are reported. Photophysical properties such as fluorescence, intermolecular charge transfer, two-photon absorption action cross section (delta Phi) and fluorescence-response to bovine serum albumin (BSA) are investigated and discussed. The fluorescence emission is red-shifted and quenched with the increase in polarity of solvents. In aqueous buffer (pH 7.0), compound 1b has a large blue shift (74 nm) and 37-fold fluorescence enhancement when interacts with BSA. The response is noticeable by naked eyes. Cations, anions and DNA have no such responses. It is resulted from the change of environmental polarity from aqueous solution to hydrophobic cage in protein, and sequentially, the change in the effect of excited intermolecular charge transfer. (C) 2010 Elsevier Ltd. All rights reserved.