Abstract
By changing the ancillary ligands, three new zinc-based coordination polymers (CPs), {[Zn(4,4′-bpy)(H2O)4]·(TDC)·(H2O)}n (1), [Zn(2,2′-dmbpy)(TDC)]n (2), and [Zn2(3,3′-dmbpy)(TDC)2]n (3) (H2TDC =2,5-thiophenedicarboxylic acid, 4,4′-bpy =4,4′-bipyridine, 2,2′-dmbpy =2,2′-dimethyl-4,4′-bipyridine, 3,3′-dmbpy =3,3′-dimethyl-4,4′-bipyridine) have been synthesized under the same reaction conditions (H2O, pH =7–8, and 140°C) and were structurally characterized. 1 is a linear chain structure and further connected into a 3-D structure through hydrogen bonds. 2 shows a 2-D (4,4) network when the dinuclear [Zn2(COO)4N2] building unit is regarded as a six-connected node. 3 has a twofold-interpenetrating 3-D zinc-organic framework pcu topology. Furthermore, 1–3 show strong photoluminescence at room temperature in the solid state, and the catalytic activities of 1–3 for degradation of methyl orange in a Fenton-like process have been investigated. The results suggest that the ancillary ligands influence the final resulting CPs.
Graphical Abstract
![](/cms/asset/74c1efe3-21cf-4423-aba6-4bb39d04c5d9/gcoo_a_1497163_uf0001_c.jpg)
Disclosure statement
No potential conflict of interest was reported by the author(s).