Synthesis, crystal structure and photocatalytic properties of two new coordination polymers based on flexible dicarboxylate and 1,1′-(1,4-butanediyl)bis(imidazole) ligands

• Published in: Inorganica Chimica Acta 2021-01, Vol.515, p.120063, Article 120063
• Main Authors: Lu, Lu, Zhou, Shanhe, Shi, Chunyue, Rao, Congying, Wu, Weiping, Sun, Yanchun, Ma, Aiqing
• Format: Article
• Language: English
• Subjects: Coordination polymers; Crystal structure; Crystallography; Dyes; Imidazole; Ligands; Mechanism; Photocatalysis; Photodegradation; Structure; Ultraviolet radiation
• ISSN: 0020-1693; 1873-3255
• DOI: 10.1016/j.ica.2020.120063

[Display omitted] The photocatalytic experimental results demonstrated that both 1 and 2 displayed efficient photocatalytic performances to degrade MV under UV irradiation. The mechanism using which these CPs executed photocatalytic behaviour has been proposed. •Through design, two new coordination complexes were obtained.•The photocatalytic results demonstrated that both of them displayed efficient performances to degrade MV.•The mechanism of photocatalytic behaviour has been proposed. The assembly of 3,3ˊ-(1,2-phenylenebis(methyleneoxy)) dibenzoic acid (H2L) with CoII/CuII salts in presence of 1,1′-(1,4-butanediyl)bis(imidazole) (bbi) ancillary ligand generated two new coordination polymers (CPs) with formula [Co(L)(bbi)]n (1) and [Cu3(μ2-OH)2(L)2(bbi)]n (2). The crystallographic studies revealed that 1 exhibits 2D layer structure, while 2 displays 1D chain. The photocatalytic activities of title materials have been tested for the degradation of a model organic dye methyl violet (MV). The photocatalytic experimental results demonstrated that both 1 and 2 displayed efficient photocatalytic performances to degrade MV under UV irradiation. The mechanisms of these CPs for photocatalytic behaviour have been proposed.