Metal-controlled architecture and photochromism of three coordination polymers based on N, N′-bis(carboxyethyl)-4, 4′-bipyridinium ligand. (September 2020)

• Record Type: Journal Article
• Authors: Liu, Jinjian; Lu, Yiwei; Lu, Wenbo
• Is Part Of: Dyes and pigments. Volume 180(2020)
• Publication Date: 2020-09
• Subjects: N, N′-bis(carboxyethyl)-4, 4′-bipyridinium (BCEbpy) -- 1, 3, 5-Benzenetricarboxylic acid (H3BTC) -- Coordination polymers -- Photochromism -- Metal ion effect; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2020.108498
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: In this work, a neutral viologen derivative, N, N′-bis(carboxyethyl)-4, 4′-bipyridinium (BCEbpy), has been selected as the main ligand, and 1, 3, 5-benzenetricarboxylic acid (H3 BTC) as the auxiliary ligand to construct three novel coordination polymers {Zn1.5 (BCEbpy)0.5 (BTC)(H2 O)3 ·3H2 O}n (1 ) {Cd1.5 (BCEbpy)0.5 (BTC)(H2 O)·3H2 O}n (2 ), {Mn1.5 (BCEbpy)0.5 (BTC)(H2 O)·3H2 O}n (3 ) by varying different metal ions. Complex 1 features the 2D layered architecture, while complexes 2 and 3 have the same 3D framework. The difference in the structures of the three complexes is due to the different coordination ability of metal ions. The photochromic properties of these three complexes have also been investigated, only complexes 1 and 2 show color changes upon UV irradiation. The effect of metal ions on the photochromic behavior has been discussed. Graphical abstract: Image 1 Highlights: Three novel coordination polymers have been got by varying different metal ions. Their crystal structures and photochromic properties have been studied. Metal ions not only affect the geometry, but also can effectively control the photochromic property.