Synthesis and characterization of a novel 3D porous luminescent Ag(I) framework with a multidentate triazole ligand

By using a multidentate N-(4-(4H-1,2,4-triazol-4-yl)phenyl)formamide (L) ligand and AgClO4, a novel three-dimensional(3D) porous luminescent silver(I) complex {[Ag2(μ3-L)2]·(ClO4)2}n (1) has been isolated and characterized by single crystal diffraction analysis. The result reveals that 1 contains two kinds of distinct 1D channels with different sizes and shapes, in which free perchlorate anions are located in these 1D channels. Anion exchange experiment of 1 with NaNO3 was monitored by FT-IR, PXRD, elemental analysis and photoluminescence characterization, indicating that the porous framework of 1 can remain intact throughout the anion exchange process. 1 has green luminescence emission and can behave anion-responsive tunable photoluminescence properties. The result also reveals that the multidentate L ligand can be used for the preparation of novel functional coordination materials.