Mixed ligand coordination polymer based on 4,4'-sulfonyldibenzoic acid and 1,3-bis(2-methyl-1-imidazolyl)benzene: Synthesis, characterization, luminescent and proton conducting properties

A new proton-conductive Zn(II) coordination polymer, namely, [Zn(SDBA)(1,3-BMIB)center dot H2O](n) (1) (1,3-BMIB = 1,3-bis(2-methyl-1-imidazolyl)benzene, H(2)SDBA = 4,4'-sulfonyldibenzoic acid)) has been synthesized under hydrothermal condition and characterized by elemental analysis, and single-crystal X-ray diffraction. Single-crystal X-ray diffraction study reveals that complex 1 features 2D (4, 4) grid layer. Complex 1 exhibits strong fluorescent emissions in the solid state at room temperature. Moreover, complex 1 also exhibits a proton conductivity of over 10(-5) S cm(-1) at 328 K and 99% relative humidity. (C) 2017 Elsevier B.V. All rights reserved.