Novel luminescent heterobimetallic Ln-Cu(I) 3D coordination polymers based on 5-(4-pyridyl) isophthalic acid as heteroleptic ligand. Synthesis and structural characterization

摘要

Six novel photoluminescent Ln-Cu(I) heterobimetallic 3D coordination polymers, [LuCu (pyip(2-))(2)(H2O)](n) (1-6) (where Ln is Pr, Nd, Sm, Eu, Gd, Ho, respectively, and H(2)pyip = 5-(4-pyridyl) isophthalic acid) have been synthesized in a concise and reproducible manner under hydrothermal conditions. All of these substances were fully characterized by appropriate spectroscopic methods and elemental analysis. Structural determinations revealed that 1-6 are isomorphic and display 3D frameworks. Luminescent properties of the obtained compounds have been studied in detail revealing light emissions of warm white, cool white and light blue for 3,4 and 5, respectively. The effectiveness of association of a rare earth with a transition metal in producing valuable luminescent materials for practical applications is demonstrated. (C) 2015 Elsevier B.V. All rights reserved.