A chiral coordination polymer with both fluorescence enhancement and photo-chromism

IF 2.7 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Inorganica Chimica Acta Pub Date : 2025-04-17 DOI:10.1016/j.ica.2025.122726

Ya Liu , La-Hong Gong , Yu-Ting Zhang , Pen-Ji Yan , Xiao-Qiang Yao

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引用次数: 0

Abstract

A luminescent coordination polymer, {[Zn(TIPA)(D-cam)]·H₂O}_n(1), where TIPA = tris(4-(1H-imidazol-1-yl)phenyl)amine and D-H₂cam = D (+)-camphorate dianion, was successfully synthesized. This polymer exhibits a two-fold polythreading architecture characterized by undulated grid structures with a (4, 4) net topology. Unlike previously reported luminescent coordination polymers based on TIPA, the emission intensity of compound 1 is significantly higher than that of TIPA, with a slight red shift. This enhancement can be attributed to the electron-donating properties and flexibility of D-H₂cam. The investigation of the photoluminescence mechanism revealed that the emission of 1 originates from the intraligand charge transfer transitions (π → π*). In addition, 1 exhibits a good ability to recognize Fe³⁺, Cr₂O₇²⁻, nitromethane, and nitrobenzene. Interestingly, compound 1 also demonstrates a rapid photochromic reaction to UV irradiation under environmental conditions. This can be attributed to electron transfer (ET) between the polyimidazole ligand TIPA and D-H_₂cam.

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一种具有荧光增强和光致变色的手性配位聚合物

成功合成了一种发光配位聚合物{[Zn(TIPA)(D-cam)]-H2O}n(1)，其中 TIPA = 三(4-(1H-咪唑-1-基)苯基)胺，D-H2cam = D (+) -樟脑二元离子。这种聚合物具有两重多线程结构，其特点是具有 (4, 4) 网状拓扑结构的波状网格结构。与之前报道的基于 TIPA 的发光配位聚合物不同，化合物 1 的发射强度明显高于 TIPA，并有轻微的红移。这种增强可归因于 D-H2cam 的电子捐赠特性和柔韧性。对光致发光机理的研究表明，1 的发射源于配位体内部的电荷转移跃迁（π → π*）。此外，1 还能很好地识别 Fe3+、Cr₂O₇2-、硝基甲烷和硝基苯。有趣的是，在环境条件下，化合物 1 在紫外线照射下也会迅速发生光致变色反应。这可归因于聚咪唑配体 TIPA 和 D-H₂cam 之间的电子转移（ET）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Inorganica Chimica Acta 化学-无机化学与核化学

CiteScore

6.00

自引率

3.60%

发文量

440

审稿时长

35 days

期刊介绍： Inorganica Chimica Acta is an established international forum for all aspects of advanced Inorganic Chemistry. Original papers of high scientific level and interest are published in the form of Articles and Reviews. Topics covered include: • chemistry of the main group elements and the d- and f-block metals, including the synthesis, characterization and reactivity of coordination, organometallic, biomimetic, supramolecular coordination compounds, including associated computational studies; • synthesis, physico-chemical properties, applications of molecule-based nano-scaled clusters and nanomaterials designed using the principles of coordination chemistry, as well as coordination polymers (CPs), metal-organic frameworks (MOFs), metal-organic polyhedra (MPOs); • reaction mechanisms and physico-chemical investigations computational studies of metalloenzymes and their models; • applications of inorganic compounds, metallodrugs and molecule-based materials. Papers composed primarily of structural reports will typically not be considered for publication.