Syntheses, Structures, and Photoluminescent Properties of Two Zn(II) Coordination Polymers Based on 5-(4-Hydroxypyridinium-1-ylmethyl) Isophthalic Acid

Abstract

Two novel coordination polymers, {[Zn(L)(4,4′-bpy) 0.5 ]·2H 2 O} n ( 1 ) and {[Zn(L)(bpe) 0.5 ]·2H 2 O} n ( 2 ) (H 2 L=5-(4-hydroxypyridinium-1-ylmethyl)isophthalic acid, 4,4′-bpy=4,4′-bipyridine, bpe=1,2-bis(4-pyridyl)ethylene), have been hydrothermally synthesized. Both compound 1 and 2 were structurally characterized by X-ray diffraction analyses, infrared spectra (IR), elemental analyses, powder X-ray diffraction (PXRD), and thermogravimetric (TG) analyses. Compound 1 exhibits a three-dimensional (3D) 3-fold interpenetrating framework. Compound 2 has the similar 2D double-layer structure and exhibits a 3-fold parallel interpenetrated 2D→3D network motif. Meanwhile, their luminescent properties have also been investigated in detail. CCDC: 908520, 1 ; 908521, 2 .