Charge transfer of acridine based hybrid metal halide for light-emitting diode

Abstract

The development of charge transfer materials accompanied by local excited state have been extensively studied in recent years owing to their potential applications in the field of photodetector, photocatalytic and solid-state lighting. Herein, the assembly of acridine (AD) organic cations and [ZnCl₄]^2- anions afforded one organic–inorganic hybrid complex [(AD)₂(ZnCl₄)] (1), which can be facilely synthesized in ethanol solution at room temperature for a few minutes. The alternately arranged AD cation π-conjugated system and [ZnCl₄]^2- inorganic anion tetrahedrons enable this hybrid complex with the mixture of local excited and charge transfer characteristic. It shows bright green light emission with long lifetime of 16.31 ns and quantum yield of 53 %. Theoretical calculations provided detailed energy level, band gap and charge distribution information of 1. Successful fabrication of green phosphor-converted light-emitting diode (LED) device making this hybrid complex perfect candidate for solid-state lighting material.