A New Fluorescent Chemsensor Based on Metal-macrocycle Complex for Biological anion in Aqueous Solution

Xiaohuan Huang; Lv Yan; Yongbing He; Chen Zhihong

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A New Fluorescent Chemsensor Based on Metal-macrocycle Complex for Biological anion in Aqueous Solution

Xiaohuan Huang,Lv Yan,Yongbing He * #,Chen Zhihong

College of Chemistry and Molecular Sciences, Wuhan University

*Correspondence author

#Submitted by

Subject:

Funding: the Research Foundation for the Doctoral Program of High Education（No.No. 20090141110016）

Opened online:28 January 2010

Accepted by: none

Citation: Xiaohuan Huang,Lv Yan,Yongbing He.A New Fluorescent Chemsensor Based on Metal-macrocycle Complex for Biological anion in Aqueous Solution[OL]. [28 January 2010] http://en.paper.edu.cn/en_releasepaper/content/39627

We have synthesized the tetraazamacrocycle 1 bearing two anthryl groups as side-arms, which exhibited high selectivity for ZnII ion in switching-on type responses in aqueous solution. 1-ZnII shows obvious excimer emission by coordination with ZnII in aqueous solution. When PPi or ATP was added (pH 7.4), the excimer emission of 1-ZnII was quenched while the monomer emission was revived. To our knowledge, no other known sensor has this characteristic under physiological pH conditions. At the same time, the obvious different fluorescence response of 1-ZnII for PPi and ATP in water show that the receptor 1-ZnII can be used as a selectivity fluorescent chemosensor for PPi and ATP anions.

Keywords:Fluorescence;Excimer emission;Chemosensor;Tetraazamacrocycle;Supramolecular chemistry

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