Double chains-copper(I)-based coordination polymer with strong blue fluorescent emission

Abstract

A solvothermal reaction of Cu(CN) with triphenylphosphine yielded a double-chain coordination polymer of the formula C20H15Cu2N2P (I). X-ray diffraction study shows that complex I crystallizes in the monoclinic system, space group P21/n, with lattice parameters a = 9.3017(8), b = 12.4273(13), c = 16.0505(15) A, β = 91.688(6)°, V = 1854.6(3) A3, Z = 4, and ρcalcd = 1.581 mg m−3. The Cu(I) atoms show difference in the coordination environment. Complex I emits strong blue fluorescence light (λem(max) = 516 nm), when it is excited by the UV light (λexc(max) = 250 nm) in the solid state at room temperature.