A simple but efficient strategy to enhance hydrostability of intensely fluorescent Mg-based coordination polymer (CP) via forming a composite of CP with hydrophobic PVDF. Issue 8 (21st January 2016) - Zhai, Lu
Abstract : The composites of1 with hydrophobic PVDF were prepared by mechanically mixed, tableted and annealed approach, which showed good compatibility between1 and PVDF, high hydrostability and intense blue emission. Abstract : A coordination polymer (CP) of Mg 2+ with 1, 3, 5-benzenetricarboxylate (BTC 3− ) was synthesized using a solvothermal method. The Mg-CP, with a formula of Mg3 (BTC)(HCOO)3 (DMF)3, crystallizes in the trigonal space group P 3̄, with cell parameters of a = b = 13.972(5) Å, c = 8.090(5) Å and V = 1367.6(11) Å 3, and shows a lamella structure built from planar rosette-type hexanuclear architectures. The Mg-CP emits intense blue fluorescence arising from π* → π transition of intra-ligand of BTC 3− with 21.69% quantum yield, yet it exhibits poor stability to water. The composites of Mg-CP with hydrophobic polyvinylidene fluoride (PVDF) were sequentially prepared by mechanically mixed, tableted and annealed processes, which showed good compatibility between Mg-CP and PVDF, high hydrostability, and intense blue emission. This study suggests a simple but efficient method to solve the drawbacks of some functional CPs unstable to water and to promote them as practical applications in the field of functional materials.