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一系列镧系簇合物：用于检测铁、Cr₂O₇²⁻/CrO₄²⁻和4-硝基苯胺的镝单分子磁体和铽多响应发光传感器。

A series of Ln clusters: Dy single molecule magnet and Tb multi-responsive luminescent sensor for Fe, CrO /CrO and 4-nitroaniline.

作者信息

Qin Yaru, Ge Yu, Zhang Shasha, Sun Hao, Jing Yu, Li Yahong, Liu Wei

机构信息

College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 China

出版信息

RSC Adv. 2018 Apr 3;8(23):12641-12652. doi: 10.1039/c8ra01485j.

DOI:10.1039/c8ra01485j
PMID:35541266
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9079637/
Abstract

Five tetranuclear lanthanide clusters of compositions [LnL(NO)(Piv)]·2CHOH (Ln = Gd (1), Tb (2), Dy (3), Ho (4), Er (5); HL = 2-(((2-hydroxy-3-methoxybenzyl)imino)methyl)-6-methoxyphenol; Piv = pivalic acid) were synthesized under solvothermal conditions. The structures of 1-5 were characterized by single-crystal X-ray crystallography. Complexes 1-5 possess a zig-zag topology with [LnO] cores being formed by the fusion of oxygen atom-bridged two [LnO] moieties. Direct-current magnetic susceptibility studied in the 2-300 K range revealed weak antiferromagnetic interactions in 1, 2, 4, 5 and ferromagnetic interactions in 3. Complex 3 exhibits single molecule magnet (SMM) behavior. The luminescence studies indicated that complex 2 can serve as highly sensitive and selective luminescent materials for Fe, CrO , CrO and 4-nitroaniline (4-NA), demonstrating that complex 2 should be a potential candidate for multi-responsive luminescent sensor.

摘要

在溶剂热条件下合成了五个组成为[LnL(NO)(Piv)]·2CHOH的四核镧系簇合物（Ln = Gd (1)、Tb (2)、Dy (3)、Ho (4)、Er (5)；HL = 2-(((2-羟基-3-甲氧基苄基)亚氨基)甲基)-6-甲氧基苯酚；Piv = 新戊酸）。通过单晶X射线晶体学对1-5的结构进行了表征。配合物1-5具有锯齿形拓扑结构，[LnO]核由氧原子桥连的两个[LnO]部分融合形成。在2-300 K范围内进行的直流磁化率研究表明，1、2、4、5中存在弱反铁磁相互作用，3中存在铁磁相互作用。配合物3表现出单分子磁体（SMM）行为。发光研究表明，配合物2可作为Fe、CrO 、CrO 和4-硝基苯胺（4-NA）的高灵敏度和选择性发光材料，表明配合物2应是多响应发光传感器的潜在候选物。

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