A new highly selective fluorescent sensor for detection of Cd2+ and Hg2+ based on two different approaches in aqueous solution

•A new water-soluble florescent sensor based on 8-hydroxy-2-methylquinoline for Cd2+ has been developed.•The complex LCd can also be considered as a good ON–OFF sensor for Hg2+ in aqueous buffer solution.•The sensor could be applied for fluorescence microscopic imaging. A new fluorescence sensor (L)...

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Published inSensors and actuators. B, Chemical Vol. 190; pp. 844 - 850
Main Authors Jiang, Xiu-Juan, Fu, Yan, Tang, Hao, Zang, Shuang-Quan, Hou, Hong-Wei, Mak, Thomas C.W., Zhang, Hong-Yan
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.01.2014
Subjects
Biological imaging
Cd2+ and Hg2
Fluorescent sensor
Fluorescent sensor
Cd2+ and Hg2
Biological imaging
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Summary:•A new water-soluble florescent sensor based on 8-hydroxy-2-methylquinoline for Cd2+ has been developed.•The complex LCd can also be considered as a good ON–OFF sensor for Hg2+ in aqueous buffer solution.•The sensor could be applied for fluorescence microscopic imaging. A new fluorescence sensor (L) derived from 8-hydroxy-2-methylquinoline has been developed. This sensor can selectively detect Cd2+ in aqueous buffer solution based on chelation enhanced fluorescence (CHEF) and exhibit an almost 30-fold fluorescence increase. Besides, the complex (LCd) can also be considered as a good ON–OFF sensor for Hg2+ based on photoinduced electron transfer (PET). The sensor could be applied for fluorescence microscopic imaging.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2013.08.105