Design and synthesis of two functional coordination polymers based on the 1,1′-bis(3-carboxybenzyl)-4,4′-bipyridinium ligand†

IF 2.6 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

CrystEngComm Pub Date : 2024-09-25 DOI:10.1039/D4CE00732H

Jiali Chen, Yuying Fu, Qiaoyun Liu, Shoujie Shen and Jinjian Liu

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Abstract

Based on the viologen ligand 1,1′-bis(3-carboxylatobenzyl)-4,4′-bipyridinium dichloride (H₂BcbpyCl₂) as the functional subject and two aromatic carboxylic acids (m-H₂BDC = 1,3-benzenedicarboxylic acid and H₄BTEC = 1,2,4,5-benzenetetracarboxylic acid) as auxiliary ligands, two Zn(II)-based coordination polymers, formulated as [Zn(Bcbpy)_0.5(m-BDC)]_n (1) and [Zn(Bcbpy)_0.5(BTEC)_0.5(H₂O)]_n (2), have been successfully prepared by solvothermal strategies. Compounds 1 and 2 both have a three-dimensional framework. The two compounds demonstrate reversible photochromic properties owing to the formation of viologen radicals via photoinduced electron transfer. In addition, the photomodulated fluorescence and ink-free erasable printing properties were also studied, which enriched the study of the photophysical properties of the crystals.

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基于 1,1′-双（3-羧基苄基）-4,4′-联吡啶鎓配体†的两种功能配位聚合物的设计与合成

以紫罗兰配体 1,1′-双（3-羧基亚苄基）-4,4′-联吡啶二氯化物（H2BcbpyCl2）为功能主体，两种芳香族羧酸（m-H2BDC = 1、3-苯二甲酸和 H4BTEC = 1,2,4,5-苯四甲酸）为辅助配体，配制成两种基于 Zn(II) 的配位聚合物 [Zn(Bcbpy)0.5(m-BDC)]n（1）和[Zn(Bcbpy)0.5(BTEC)0.5(H2O)]n（2）。化合物 1 和 2 都具有三维框架。这两种化合物具有可逆的光致变色特性，这是由于通过光诱导电子转移形成了紫胶自由基。此外，还研究了光调荧光和无墨可擦除印刷特性，丰富了对晶体光物理特性的研究。

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