A benzo-15-crown-5-modifying ratiometric-absorption and fluorescent OFF-ON chemosensor for Cu2+

被引：12
作者：
Chen, Yuting [1 ]
Wang, Xinxin [1 ]
Wang, Kaili [2 ]
Zhang, Xiuling [1 ]
机构：
[1] Dezhou Univ, Dept Chem, Key Lab Coordinat Chem & Funct Mat Univ Shandong, Dezhou 253023, Peoples R China
[2] Beijing Municipal Res Inst Environm Protect, Beijing 100037, Peoples R China
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2016年 / 161卷
关键词：
Chemosensor; Benzo-15-crown-5; Ratiometric-absorption; Isomerization; Fluorescence enhancement; SENSOR; DERIVATIVES; COPPER; HG2+; AL3+; DYE;
D O I：
10.1016/j.saa.2016.02.041
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
One new benzo-15-crown-5-modifying fluorene Schiff base (FBC), together with the C=N-linked fluorene-3,4-dimethoxybenzene (FBDMO) and fluorene-benzene (FB) references, has been designed and facilely synthesized. The binding of Cu2+ with nitrogen atom of C=N moiety in these three compounds can inhibit the photo-induced electronic transition process and induce the ratiometric-absorption and fluorescent OFF-ON response to Cu2+. Whereas the employment of benzo-15-crown-5 moiety in FBC as additional binding platform for Cu2+ not only amplifies the fluorescent enhancement of FBC via preventing the isomerization of C=N moiety, but also endows this compound high selectivity and rapid response towards Cu2+ over the references FB and FBDMO. These results render FBC highly sensitive ratiometric-absorption and fluorescent OFF-ON detecting potential for Cu2+ with the detection limit of 3.91 x 10(-6) M. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：144 / 149
页数：6
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