Halogen bonds regulating structures and optical properties of hybrid iodobismuthate perovskites
作者:Ao Li、Mengling Wu、Junle Zhang、Fahui Song、Fangfang Pan
DOI:10.1039/d3dt00210a
日期:——
Successive structural transformations were observed in a methanolic solution containing 4-iodo-1-methylpyridin-1-ium iodide (IPyMe·I) and bismuth iodide (BiI3). When kept in the solution, the amorphous solid (P_1) obtained immediately on mixing would transform to needle crystals (C_1) in hours, which would convert to prismatic crystals (C_2) in around 2 days. In the presence of hydroiodic acid, the