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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
Simple bisthiocarbonohydrazones as sensitive, selective, colorimetric, and switch-on fluorescent chemosensors for fluoride anions
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论文类型：期刊论文
发表时间：2007-07-01
发表刊物：CHEMISTRY-A EUROPEAN JOURNAL
收录刊物：SCIE、EI、PubMed、Scopus
卷号：13
期号：10
页面范围：2880-2892
ISSN号：0947-6539
关键字：anions; colorimetry; fluorescence; hydrazones; sensors
摘要：Bisthiocarbonohydrazones are found to be a class of sensitive, selective, ratiometric, and colorimetric chemosensors for anions such as fluoride (F-) or acetate (Ac-). The sensitivities, or the binding constants of the sensors with anions, were found to be strongly dependent on the substituents appended on the pi-conjugation framework, the delocalization bridge CH-N the aromatic moiety, and the hetero atom in the C=X group (X=O, S) of the sensors. Single-crystal structures and H-1 NMR titration analysis shows that the -CH=N- moiety is a hydrogen-bond donor, and it is proposed that an additional CH center dot center dot center dot F hydrogen bond is formed for the sensors in the presence F-. A sensor bearing anthracenyl groups is demonstrated as a switch-on fluorescent chemosensor for F- and Ac-. The recognition of F- in acetonitrile (MeCN) by a sensor with nitrophenyl substituents is tolerant to MeOH (MeCN/MeOH=10:1, v/v) and water (MeCN/H2O=30:1, v/v); at these solvent ratios the absorption intensity of the sensor-F- complex solution at maximal absorption wavelength was attenuated to half of the original value in pure MeCN.