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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
Optical Cu2+ probe bearing an 8-hydroxyquinoline subunit: High sensitivity and large fluorescence enhancement
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论文类型：期刊论文
发表时间：2012-05-15
发表刊物：TALANTA
收录刊物：SCIE、EI、PubMed
卷号：93
页面范围：55-61
ISSN号：0039-9140
关键字：Optical probe; Cu2+; High sensitivity; 8-Hydroxyquinoline; Environmental samples
摘要：A new fluorescent and calorimetric probe RCu1 with ultra-sensitivity (detection limit is 4.7 nM (3 sigma)) was developed. It is based on a rhodamine B derivative modified with a functionalized 8-hydroxyquinoline group as a copper-binding site which greatly increases the affinity for Cu2+center dot Cu2+ acts not only as a selective recognizing guest but also a hydrolytic promoter. RCu1 showed single-selectively sensing Cu2+ over other cations and much larger fluorescence enhancement (as high as over 1000-fold) than those based on Cu2+-complexation. The detection mechanism was proved by TOF-MS, FT-IR, H-1 NMR and Gaussian calculations. Based on the outstanding recognition ability of RCu1 toward Cu2+, an analytical procedure was developed for Cu2+-determination in natural water samples and soil sample. (C) 2012 Elsevier B.V. All rights reserved.