A novel imidazole-based tri-nitrogen metal cations probe with better-selectivity in ionic radius and acting as a Zn2+ fluorescence turn-on sensor

被引：21

作者：

Liu, Jin ^{[1
]}

Wang, Shizhao ^{[1
]}

Li, Weijun ^{[1
]}

Dong, Yujie ^{[1
]}

Wang, Jianli ^{[1
]}

Song, Qingbao ^{[1
]}

Zhang, Cheng ^{[1
]}

机构：

[1] Zhejiang Univ Technol, Coll Chem Engn, State Key Lab Breeding Base Green Chem Synth Tech, Hangzhou 310014, Peoples R China

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2020年 / 1222卷

基金：

中国国家自然科学基金;

关键词：

Tri-nitrogen ligand; Imidazole; Sensor; Metal cations; Fluorescence; TERPYRIDYL COMPLEXES; DESIGN; LIGAND; OXIDE; WATER; FE3+; RUTHENIUM(II); CHEMOSENSORS; RECOGNITION; RU(II);

D O I：

10.1016/j.molstruc.2020.128909

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel imidazole-pyridine-imidazole tri-nitrogen tridentate ligand molecule Py2IM was designed and synthesized to act as a metal cations sensor, with the traditional terpyridyl sensor molecule TPyPH as reference. Unlike the TPyPH could detect six metal cations including Ag+, Zn2+, Cu2+, Ni2+, Mn2+ and Fe3+, the Py2IM with a very similar ligand architecture could only detect the three metal cations Ag+, Zn2+, and Cu2+ with the larger ionic radius. This phenomenon could be attributed to the lager cavity-size of Py2IM upon the introduction of the imidazole ring, and indicated that Py2IM possessed the better-selectivity to metal cations in ionic radius. And finally, the sensing behaviors of Py2IM on the PL spectra exhibited that the Py2IM might also be a novel Zn2+ fluorescence turn-on sensor with good sensitivity and selectivity at excitation wavelength of 365 nm. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：7

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