Zero-Dimensional Zinc Halide Organic Hybrids with Excellent Optical Waveguide Properties
Kaijie Li, Yuyan Zhao, Meng‐En Sun, Gaosong Chen, Chong Zhang, Huali Liu, Hai‐Yang Li, Shuang‐Quan Zang, Thomas C. W. Mak
Abstract
Optical waveguide materials are widely used in optical conversion and optical communication systems, but their harsh preparation conditions limit their practical applications. Herein, we present two zero-dimensional organic metal halide hybrids (OMHHs) with excellent optical waveguide properties, which are formed by cocrystallization of d10 transition metal zinc halide with 2,5-bis(4-pyridinium)thiazolo[5,4-d]thiazole (TTz) using a simple solution-based method. Both compounds have excellent optical waveguide properties, with the optical loss coefficient R for (H2TTz)ZnCl4·MeOH (1) being 0.01577 dB·μm–1 at 462 nm and for (H2TTz)·ZnBr4·MeOH (2) being 0.01182 dB·μm–1 at 515 nm, respectively. Our work reveals the great potential of OMHH microcrystals in photonic technology and also provides new enlightenment for the practical application of low-loss optical waveguides.