Synthesis, structure, and characterization of two Pr-based coordination polymers containing the 1,10-phenanthroline and their luminescence performances

Two Pr-based coordination polymers, {[ Pr(phen)](2)center dot(p-cpoa)(3)}center dot 0.5H(2)O (phen = 1,10-phenanthroline, p-cpoa = 4-carboxyphenoxyacetic acid) (1) and {[ Pr(phen)](2)center dot L-2 center dot bpdc} (L=4,4'-bis(2-sulfonatostyryl)bi-phenyl and bpdc = biphenyl-4,4'-dicarboxylic acid) (2) have been hydrothermally synthesized. In compound 1, four-connection p-cpoa connects the Pr-dimers to double-strand chain, which is further linked by threeconnection p-cpoa to (4,4)-net layer. The 2D -> 3D framework is set up by the pi-pi conjugation of interlayer phen. In compound 2, Pr-dimer shows distorted six-connection model containing four L and two bpdc with phen as a pendant. The packing framework displays the flat pcu-topology. The compounds are further characterized by PXRD, TG, and luminescence.