Antimony Bromide Organic-Inorganic Hybrid Compound with a Long-Chain Diamine Showing Switchable Phase Transition and Second-Harmonic Generation Properties.

Organic-inorganic hybrid metal halides have attracted significant attention in recent years due to their excellent optoelectronic properties and potential applications in solar cells. Herein, the organic-inorganic hybrid molecule [,-dimethyl-1,3-propanediamine]SbBr () was synthesized by reacting a long-chain organic diamine ,-dimethyl-1,3-propanediamine with SbBr as a metal halide precursor in HBr aqueous solution. Compound possesses a one-dimensional chainlike structure with the second-harmonic generation switch and two continuous phase transitions above room temperature. The band gap of compound is about 2.62 eV, exhibiting a semiconductive property, which may have important implications for the development of new optoelectronic devices.