Two photochromic two-dimensional Zn(II)-MOFs based on a carboxybenzyl viologen ligand

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED Dyes and Pigments Pub Date : 2024-06-17 DOI:10.1016/j.dyepig.2024.112291

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

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Abstract

Two new Zn(II) metal-organic frameworks (MOFs) {[Zn(Bpybc)_0.5 (m-BDC)(H₂O)]·2H₂O}_n (1) and {[Zn(H₂Bpybc)(BTEC)(H₂O)₂]·H₂O}_n (2) have been successfully synthesized, where 1,1′-bis(4-carboxybenzyl)-4,4′-bipyridinium dichloride (H₂BpybcCl₂) is used to react as the predesigned ligand with two kinds of aromatic carboxylic acids (1,3-benzenedicarboxylic acid = m-H₂BDC, 1,2,4,5-benzenetetracarboxylic acid = H₄BTEC) as the secondary building linkers. Both two compounds own two-dimensional (2D) layered structures. In addition, compounds 1 and 2 display reversible photochromism, which is associated with the generation of free radicals via photoinduced electron transfer. Simultaneously, the photomodulated fluorescent properties and their potential applications in ink-less and erasable printing were also studied.

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基于羧基苄基紫罗兰配体的两种光致变色二维 Zn(II)-MOFs

两种新的 Zn（II）金属有机框架（MOFs）{[Zn（Bpybc）0.5 (m-BDC)(H2O)]-2H2O}n (1)和{[Zn(H2Bpybc)(BTEC)(H2O)2]-H2O}n (2)已成功合成，其中 1,1′-双（4-羧基苄基）-4、4′-联吡啶二氯化物（H2BpybcCl2）作为预先设计的配体，与两种芳香族羧酸（1,3-苯二甲酸 = m-H2BDC，1,2,4,5-苯四甲酸 = H4BTEC）作为二级构建连接体发生反应。这两种化合物都具有二维（2D）分层结构。此外，化合物 1 和 2 显示出可逆的光致变色性，这与通过光诱导电子转移产生自由基有关。同时，还研究了光调荧光特性及其在无墨印刷和可擦除印刷中的潜在应用。

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.