1,3,5-Trithian Mediated Formation of Two New One-Dimensional Silver Coordination Polymers and Investigation of Their Optical Features

To study the photoluminescence property of simple silver(I) coordination compounds constructed by 1,3,5-trithian (3S), two new silver(I) polymers, namely, [Ag(3S) (9-AnCO(2))](infinity) (I, 9-AnCO(2) = anthracene carboxylate), and [Ag-2(3S)(Ph2PO2)(2)](infinity) (II, Ph2PO2 = diphenylphosphinate), have been prepared and investigated by single-crystal X-ray diffraction (SXRD), fourier-transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), solid-state UV-vis absorption spectra (SUV) and photoluminescence spectroscopy (PL). Polymer I represents an electroneutral one-dimensional polymer bridging only by 3S. Polymer II represents an electroneutral one-dimensional polymer co-bridging by 3S and diphenylphosphinate. Both polymers show bright emission at room temperature in the solid-state, cyan light for I, and green light for II. The Aggregation-induced Emission (AIE) phenomenon of II is also observed when gradually adding the weakly polar solvent (ether) to its CH3CN solvent. Our work shows that 3S is an excellent ligand for constructing new luminous coordination compounds.