A New 1D Iodoargentate Chain Based on Heptameric Ag7I13 Building Units Templated by Transition-metal-complex Cation: Structure, Fluorescence and Visible Light Responding Photocatalytic Property

摘要

Using transition-metal-complex cation as the structure-directing agent,a novel one-dimensional (1D) iodoargentate-based hybrid,namely,{[Co(2,2'-bipy)3]2(Ag7I11)·3H2O}n (1) has been synthesized and structurally characterized.The interesting 1D (Ag7I11)n4n-chain of 1 is constructed from a heptameric Ag7Ii3 secondary building unit,in which abundant argentophilic interactions can be observed.Intermolecular C-H· πr among [Co(2,2'-bipy)3]2+ cations and C-H· I interactions between [Co(2,2'-bipy)3]2+ cations and (Ag7I11)n4n-chains contribute to the formation of a 3D network.The optical gap (2.58 eV) based on UV-Vis diffuse-reflectance measurement suggests the semiconductor nature of 1,which implies an efficient photocatalytic degradation activity on organic pollutants under visible light irradiation.As expected,1 exhibits photocatalytic activity for the degradation of rhodamine B.The luminescence property was also studied.