|
个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：Director, State Key laboratory of Fine Chemicals
其他任职：精细化工国家重点实验室主任、国务院学科评议组成员
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：大连理工大学精细化工国家重点实验室
西部校区化工实验楼F-202#
http://peng-group.dlut.edu.cn/
联系方式：大连理工大学精细化工国家重点实验室 西部校区化工实验楼F-202 辽宁省大连市高新区凌工路2号，大连116024 Tel: 0411-84986306; Fax: 0411-84986292；课题组网址：http://peng-group.dlut.edu.cn/
电子邮箱：pengxj@dlut.edu.cn
The photoprocess effects of an amino group located at different positions along the polymethine chain in indodicarbocyanine dyes
点击次数：
论文类型：期刊论文
发表时间：2017-01-01
发表刊物：RSC ADVANCES
收录刊物：SCIE、EI、Scopus
卷号：7
期号：49
页面范围：30740-30746
ISSN号：2046-2069
摘要：A systematic spectral analysis is presented for Cy3, Cy5, Cy7 and Cy9 aminocyanine dyes. The amino group in different positions of the polymethinic chain causes different background spectral properties. Computational studies on these dyes reveal that the length of C-N bond of amino group in the even position is close to that of the C=N double bond, which prevents the conjugation of the whole polymethine chain. The amino group located in the even position acts as the electron acceptor at excited state (a-ICT) of aminocyanine dyes. While, the amino group in the odd position is the electron donor at excited state (ICT) of aminocyanine dyes. The rotations of amino groups are more difficult for aminocyanine dyes with the amino group in the even position than that of the amino group in the odd postion. The results demonstrate a foundation for interpretation of the behavior of the dyes, thus providing guidelines for future design of new aminocyanine fluorophores.