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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
The charge transfer mechanism and spectral properties of a near-infrared heptamethine cyanine dye in alcoholic and aprotic solvents
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论文类型：期刊论文
发表时间：2007-04-15
发表刊物：JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
收录刊物：SCIE
卷号：187
期号：2-3
页面范围：305-310
ISSN号：1010-6030
关键字：the charge transfer mechanism; the hydrogen bond; the heptamethine cyanine dye; the absorption and fluorescence spectra
摘要：The charge transfer mechanism of a synthesized near-infrared (NIR) heptamethine cyanine dye has been studied with 3D real space analysis method. Anew phenomenon about the intramolecular charge transfer (ICT) process is observed: the sulfonate (-SO(3)(-)) groups are mainly concerned with the ICT process. The electrons can transfer from the sulfonate (-SO(3)(-)) groups to the bridgehead amine and the electron-defect conjugated system. And the absorption and fluorescence spectra of the ICT state in alcoholic and aprotic solvents are analyzed. The spectral regularities are explained by the Kamlet and Taft (pi*, alpha, beta) scale and the ICT mechanism. Specific hydrogen-bonding interactions between the solute and solvent are considered to explain the different spectral regularities of the dye in alcoholic and aprotic solvents. (C) 2006 Elsevier B.V. All rights reserved.