Solid-state photo-polymerization of unsaturated organic cations in layer perovskite halide salts

Abstract

U.v. and X-ray irradiation causes polymerization of amino-diacetylene cations R¹NH₃⁺ and H₃NR²NH₃²⁺ where R¹= ClCH₂CC–CCCH₂– and R²=(–CH₂CO₂CH₂CC–)₂ in the solid salts (R¹NH₃)₂CdCl₄ and (H₃NR²NH₃)CdCl₄ with he layer perovskite structure; under the same conditions tetrachlorocadmate salts (RNH₃)₂CdCl₄(R = CH₂CHCH₂– and CHCCH₂–) do not react.