White-light emission in a chiral one-dimensional organic-inorganic hybrid perovskite

Recently, white-light emissions arising from self-trapped excitons in a distorted lattice have attracted significant attention in organic-inorganic hybrid perovskites. Although exciton self-trapping is reported to be easier in lower dimensional structures, one-dimensional organic-inorganic perovskites with white-light emission are rare. Herein, we report a single-component white-light emissive hybrid perovskite, C 5 H 14 N 2 PbCl 4 ·H 2 O ( 1 ), which adopts a distinct quantum-wire structure formed by edge-shared highly distorted lead chloride octahedra. Notably, 1 shows a color rendering index as high as 93.9, which almost falls around the highest value for hybrid perovskite white-light emissive materials. In addition, 1 is nonlinear and has circularly polarized optical activity induced by the incorporation of pure enantiomeric organic cations. The combination of white-light emission and chirality may pave the way for the design of new white-light emission organic-inorganic perovskites for multifunctional applications. A chiral one-dimensional organic-inorganic hybrid perovskite exhibits white-light emission with ultrahigh CRI.