A One-dimensional Metal-organic Framework of Eu(III) from Triazine-based Flexible Polycarboxylate and Bidentate Nitrogen Donor Ligane

A new Eu(III) complex from 2,2'-bipyridine (2,2'-bipy) and 1,3,5-triazine-2-4,6-tri(L-alanine) (H3L), {[Eu(L)(2,2'-bipy)](H2O)}n (1), has been synthesized and characterized. The X-ray structure analysis reveals that 1 is an infinite one-dimensional chain-like coordination polymer consisting of dinuclear lanthanide building blocks. The 1D chains are further assembled into a 2D supramolecular architecture through pi...pi interaction among chains. Crystal data for 1: EuC22H25N8O7, triclinic, space group P-1, a = 11.3965(1), b = 11.5112(6), c = 12.0404(1) angstrom, alpha = 61.970(11), beta = 86.698(15), gamma = 65.254(12)degrees, V = 1247.0(2) angstrom(3) and Z = 2. Solid-state photolumine-scence property of 1 was investigated, which exhibited remarkable red luminescence emissions with high quantum yield up to 37%.