Mono- and bis-N-functionalised cyclen with benzimidazolylmethyl pendant arms: Sensitive and selective fluorescent probes for zinc and copper ions

被引：8

作者：

El Majzoub, Abir ^{[1
]}

CadiouA, Cyril ^{[1
]}

Dechamps-Olivier, Isabelle ^{[1
]}

Chuburu, Francoise ^{[1
]}

Aplincourt, Michel ^{[1
]}

Tinant, Bernard ^{[2
]}

机构：

[1] Univ Reims, Grp Chim Coordinat, ICMR, CNRS,UMR 6229, F-51687 Reims 2, France

[2] Dept Chim, Unite CSTR, B-1348 Louvain, Belgium

来源：

INORGANICA CHIMICA ACTA | 2009年 / 362卷 / 04期

关键词：

Macrocyclic ligands; Fluorescent probes; UV-Vis and fluorimetric titrations; Zn2+; Cu2+; EFFECTIVE CORE POTENTIALS; MOLECULAR CALCULATIONS; METAL-COMPLEXES; COORDINATION-COMPOUNDS; ELECTRONIC-PROPERTIES; MACROCYCLIC LIGANDS; MAIN-GROUP; SENSORS; STABILITY; STEREOCHEMISTRY;

D O I：

10.1016/j.ica.2008.06.007

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The Zn2+ and Cu2+ complexes of L-1 and L-2 ligands (L-1: 1-(benzimidazol-2-ylmethyl)-1,4,7,10-tetraazacyclododecane, L-2: 1,7-bis(benzimidazol-2-ylmethyl)-1,4,7,10-tetraazacyclododecane) were synthesised and characterised by means of NMR, EPR, and UV-Vis spectroscopies, X-ray determination and molecular modelisation (HF-DFT(B3LYP)/LANL2DZ). These studies showed that the 1: 1 complexes were formed in which the benzimidazole arm(s) are coordinated to the metal ion. On addition of successive amounts of Zn2+ in CH3CN, the. fluorescence emission of L-1 increased linearly by a factor of 50 and the one of L-2 by a factor of 5 while on addition of successive amounts of Cu2+ in CH3CN, the. fluorescence emission of L-2 decreased linearly to 80% of its initial value. (C) 2008 Elsevier B. V. All rights reserved.

引用

页码：1169 / 1178

页数：10

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