A simple highly sensitive and selective turn-on fluorescent chemosensor for the recognition of Pb2+

被引：41
|
作者：
Sun, Tao [1 ]
Niu, Qingfen [1 ]
Guo, Zongrang [1 ]
Li, Tianduo [1 ]
机构：
[1] Qilu Univ Technol, Sch Chem & Pharmaceut Engn, Shandong Prov Key Lab Fine Chem, Jinan 250353, Peoples R China
来源：
TETRAHEDRON LETTERS | 2017年 / 58卷 / 03期
关键词：
Fluorescence; Chemosensor; Schiff base; Turn-on; Pb2+; AQUEOUS-SOLUTION; METAL-IONS; LEAD; SENSOR; PROBE; FE(III); ZN(II); SYSTEM; NI(II); MEDIA;
D O I：
10.1016/j.tetlet.2016.12.022
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
A simple highly sensitive and selective turn-on fluorescent chemosensor L based on bis-Schiff-base for Pb2+ ions was synthesized and characterized by spectroscopic techniques. L having high binding affinity towards Pb2+ ions of 2.10 x 10(4) M-1 selectively detects Pb2+ ions with almost no interference among various competitive ions by a 11-fold fluorescent enhancement in CH3CN/H2O (95:5, v/v) solution over a wide pH range. Moreover, sensor L displayed a lower detection limit of 3.80 x 10(-7) M, which is low enough for sensing sub-millimolar concentration of Pb2+ encountered practically. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：252 / 256
页数：5
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