Zeolitic imidazolate framework [Zn2(IM)4·(DMF)] for UV-white light-emitting diodes

Dalton Trans. 2012 Oct 14;41(38):11885-8. doi: 10.1039/c2dt31269g. Epub 2012 Aug 22.

Abstract

A polymorph of a [Zn(2)(IM)(4)·(DMF)] (IM: imidazolate; DMF: dimethyl formamide) framework was synthesized using a DMF template. The topology of a ZnN(4) framework is similar to that of zeolites with a chain of connected SiO(4) tetrahedra. This polymorph has a zeolite-like structure and a wave shape topology in the [010] direction. The main chain is connected to an imidazolate ligand. The structure has excellent chemical and thermal stability. This framework also exhibits broad range near-UV excitation from 350 nm to 430 nm and broadened photoluminescence emission at 445 nm. It has great potential as a phosphor in applications of near-UV or UV white light-emitting diodes.