Syntheses, Structures and Fluorescent Properties of Two 1D Chain Organic Amines and Metal Iodine Organic-inorganic Hybrid Compounds

摘要

Two bifunctional amines,4-(2-aminoethyl)morpholine and histamine,were heated with PbI2 and BiI3 in concentrated HI aqueous solution to give one-dimensional (1D) organicinorganic hybrid compounds [(C6H16N2O)PbI4]n (1) and [(C16H20N20)Bi2I10] (2),respectively.In 1,the [PbI6] octahedra formed double chain anions through sharing-comer and-edge,and the protonated (C6H16N2O)2+ cations were located at the vicinity of the double chains by hydrogen bonds.In 2,the [BiI6] octahedra firstly formed dimeric [Bi2I10]4-anion through sharing edge,and subsequently,the protonated histamine cations worked as bridge to link alternately with [Bi2I10]4-anion by hydrogen bonds to form organic-inorganic hybrid 1D chains.In addition,compound 1 emitted a green light at the excitation wavelength of 400 nm and the maximum emission wavelength is at 503 nm.