Facile synthesis of zinc(ii)-carboxylate coordination polymer particles and their luminescent, biocompatible and antibacterial properties

Abstract

Four different morphologies, including 1D nanobelts (1), 3D nanorod-flowers (2), fan-like (3) and rhombus-like (4) architectures have been synthesized from the mild reaction of Zn(Ac)₂·2H₂O and 2,2′-bipyridine-4,4′-dicarboxylic acid (H₂L). The shape of the resulting coordination polymer particles (CPPs) was dependent on the amount of solvent and the molar ratio of reactants used in the reaction. In the experimental process, some additives such as triethylamine and acetic acid played a vital role in the formation of CPPs as means of adjusting the deprotonation rate of the organic linker (H₂L), and thus affected the morphology of the resulting CPPs. We also investigated the effect of the different morphologies on the luminescent properties and bioactivities.