Crystal structures and luminescent properties of new lanthanide(III)   complexes derived from 2-phenyl-4-pyrimidinecarboxylate

doi:10.1039/c5ra21607a

CORC > 北京大学 > 化学与分子工程学院

	Crystal structures and luminescent properties of new lanthanide(III) complexes derived from 2-phenyl-4-pyrimidinecarboxylate
	Jia, Li ; Sun, Hao-Ling ; Wang, Zhenqiang
刊名	RSC ADVANCES
	2015
关键词	METAL-ORGANIC FRAMEWORKS SLOW MAGNETIC-RELAXATION COORDINATION POLYMERS PHOTOPHYSICAL PROPERTIES PHOTOLUMINESCENT PROPERTIES ENERGY-TRANSFER LIGANDS ACID ASSEMBLIES DIVERSITY
DOI	10.1039/c5ra21607a
英文摘要	In this work, five novel lanthanide(III) coordination polymers derived from 2-phenylpyrimidine-4-carboxylic acid (Hppmc), namely, [Ln(ppmc)(3)(H2O)(2)]center dot 2H(2)O [Ln = Eu (1), Tb (2)] and [Ln(ppmc)(3)(H2O)(2)] [Ln = Eu (3), Gd (4), Tb (5)] were successfully synthesized by a facile solution method and characterized by single-crystal X-ray diffraction, power X-ray diffraction (PXRD), infrared (IR) spectroscopy, elemental analysis, and thermogravimetric analysis (TGA). It was found that subtly different reaction conditions result in disparate structural characteristics. For example, by combining Hppmc with lanthanide(III) ions at room temperature, compounds 1 and 2 featuring a carboxylate-bridging chain structure, in which the carboxylates adopt both chelating and bridging modes, are isolated. However, the reaction at 35 degrees C generates three isostructural compounds 3-5 with a distinct chain structure, in which the lanthanide ions are connected by carboxylates via syn-syn and syn-anti modes. Photoluminescent studies of the Eu3+ and Tb3+ complexes reveal that the Hppmc ligand is a better sensitizer for Tb3+ ion than for Eu3+ ion. The investigation of the relationship between the crystal structures and the photoluminescence properties indicate that the coordination environments of lanthanide ions and the arrangement of the ligands are the dominating factors that affect the luminescence behaviors of the solid samples.; National Natural Science Foundation of China [21171023]; National Key Basic Research Program of China [2013CB933402]; Beijing Higher Education Young Elite Teacher Project; University of South Dakota; South Dakota EPSCoR; SCI(E); EI; ARTICLE; haolingsun@bnu.edu.cn; Zhenqiang.Wang@usd.edu; 117; 96855-96861; 5
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/424535]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Jia, Li,Sun, Hao-Ling,Wang, Zhenqiang. Crystal structures and luminescent properties of new lanthanide(III) complexes derived from 2-phenyl-4-pyrimidinecarboxylate[J]. RSC ADVANCES,2015.
APA	Jia, Li,Sun, Hao-Ling,&Wang, Zhenqiang.(2015).Crystal structures and luminescent properties of new lanthanide(III) complexes derived from 2-phenyl-4-pyrimidinecarboxylate.RSC ADVANCES.
MLA	Jia, Li,et al."Crystal structures and luminescent properties of new lanthanide(III) complexes derived from 2-phenyl-4-pyrimidinecarboxylate".RSC ADVANCES (2015).