Syntheses, structures and photoluminescence of lanthanide-organic frameworks assembled from multifunctional N,O-donor ligand

Four new lanthanide complexes [Ln(O-NCP)(2)(NO3)](n) based on multifunctional N,O-donor ligand 2-(2-carboxyphenyl)imidazo(4,5-f)-(1,10)phenanthroline (O-HNCP) and Ln(NO3)(3)center dot 6H(2)O (Ln=Nd(1). La(2), Sm(3), Eu(4)) have been achieved under hydrothermal conditions and characterized by elemental analyses, infrared spectra and single crystal X-ray diffraction. Structural analyses revealed that all of these four complexes possess similar two-dimensional layer structures. In addition, thermal stability and luminescent properties of these complexes were also investigated. (C) 2015 Elsevier Inc. All rights reserved.