Our work on two-dimensional perovskites was just published online in CCS chemistry.
April 13, 2021
The first post-synthetic solution-based crystal transformation of two-dimensional metal halide perovskites (2D MHPs) through organothiol-based reactions is reported. It is well-established that the crystal formation from a solution containing predesigned metal ion and organic cation precursors produces well- defined 2D MHPs with various intercalating organic cations. However, few reports outlining the post-synthetic crystal transformation on 2D MHPs have appeared. Here we report that, upon organothiol-based redox or condensation reactions, large organic cations in three types of 2D MHPs can convert to each other at ambient conditions without the damage of the layered inorganic framework. The swift and complete crystal interconversion has been confirmed using combined techniques including X-ray diffraction and 13 C-nuclear magnetic resonance spectroscopy. Electronic structures of the metal halide perovskites were investigated using computational chemistry.
