title: Synthesis, crystal structure, photoluminescence property of a series of 3d-4f coordination supramolecular complexes.
abstract: A series of 3d-4f heterobinuclear complexes were constructed by employing the 2,2'-bipy (2,2'-bipy=2,2'-bipyridine) ligand and corresponding metal ions (M(II)/Ln(III), M=Co(II), Cu(II) and Zn(II); Ln(III)=Nd(III), Sm(III), Eu(III) and Tb(III)). Elemental analyses, IR, UV-vis-NIR spectra, PXRD and single crystal X-ray diffraction analysis reveal that complexes 1-4, 5-8, and 9-12 are isomorphous, respectively. The zero-dimensional structures are further connected to 2D or 3D supramolecular network structures via extensive intermolecular hydrogen bonds. Luminescence studies for the heterobinuclear complexes containing Sm(III), Eu(III) and Tb(III) reveal that the chromophoric composed of Zn(II)/L may efficiently sensitize the luminescence of the rare earth cations which acts as an antenna, whereas the existence of Cu(II) leads to the quenching of the luminescence of Ln(III) ions.
authors.affiliation: College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, PR China.
authors.forename: Jian
authors.initials: J
authors.lastname: Song
authors.affiliation: College of Physics and Electronic Technology, Liaoning Normal University, Dalian 116029, PR China.
authors.forename: Cheng-Ren
authors.initials: CR
authors.lastname: Li
authors.affiliation: College of Physics and Electronic Technology, Liaoning Normal University, Dalian 116029, PR China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Xu
authors.affiliation: College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, PR China.
authors.forename: Xue-Ting
authors.initials: XT
authors.lastname: Xu
authors.affiliation: Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, PR China.
authors.forename: Li-Xian
authors.initials: LX
authors.lastname: Sun
authors.affiliation: College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, PR China. Electronic address: xingyongheng2000@163.com.
authors.forename: Yong-Heng
authors.initials: YH
authors.lastname: Xing
keywords: 3d–4f complex; Crystal structure; Luminescence; Synthesis