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

被引：43

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

页码：252 / 256

页数：5

共 38 条

[1] Synthesis and spectroscopic study of Cu(II), Ni(II), and Co(II) complexes of the ligand salicylidene-2-amino thiophenol [J].