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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
Large fluorescence enhancement of a hemicyanine by supramolecular interaction with cucurbit[6]uril and its application as resettable logic gates
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论文类型：期刊论文
发表时间：2012-04-01
发表刊物：DYES AND PIGMENTS
收录刊物：SCIE、EI
卷号：93
期号：1-3
页面范围：1401-1407
ISSN号：0143-7208
关键字：Hemicyanine; Fluorescence enhancement; TICT; Cucurbit[6]uril; Supramolecular chemistry; Logic gate
摘要：About 270 times fluorescence enhancement was observed when the hemicyanine dye, trans-4-[4-(dimethylamino)styryl]-1-methylpyridinium iodide (DSMI), was included by cucurbit[61uril (CB[6]). The 1:1 stoichiometry of DSMI/CB[6] complex was determined through optical spectra and H-1 NMR measurement. The large fluorescence enhancement was achieved by prohibiting the twisted intramolecular charge transfer (TICT) process of DSMI inside the distorted cavity of CB[6], together with the ion-dipole interaction between DSMI and CB[6]. The distortion of the CB[6] cavity, being as the major reason for the great fluorescence enhancement, was further confirmed in the calculation results. A resettable and reconfigurable logic gate was also constructed with DSMI and CB[6] under different pH situations. This study lays a solid foundation for the design of molecular logic gates by a supramolecular interaction mode. 2011 Elsevier Ltd. All rights reserved.