Chiral Lead-Oxyiodide Nonlinear Optical Crystals Constructed on l-Malate Groups.

ABSTRACT: The pursuit of nonlinear optical (NLO) crystals exhibiting an exceptional second-harmonic generation (SHG) response has been a persistent objective in scientific research. Herein, three chiral lead-oxyiodide NLO crystals, [Rb₂I][PbI(LM)] (LM = L-OOCCH₂CH(OH)COO) and A₂[Pb₂I₂(LM)₂] (A = Rb, K), have been rationally synthesized by introducing the l-malate group into halide perovskites to substitute partial halide anions. All of them contain highly distorted lead-oxyiodide polyhedra with large hyperpolarizability and anisotropic polarization. In particular, the highly distorted [PbI₂O₄] polyhedrons in [Rb₂I][PbI(LM)] are shielded by more Rb⁺ cations and aligned into a uniform arrangem

SUBMITTER: Luo Y 

PROVIDER: S-EPMC12728927 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature