Luminescent, magnetic and ferroelectric properties of noncentrosymmetric chain-like complexes composed of nine-coordinate lanthanide ions

doi:10.1039/c3dt51743h

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	Luminescent, magnetic and ferroelectric properties of noncentrosymmetric chain-like complexes composed of nine-coordinate lanthanide ions
	Li, Xi-Li 1; Chen, Chun-Lai 1; Xiao, Hong-Ping 2; Wang, Ai-Ling 1; Liu, Cai-Ming 3; Zheng, Xianjun 1; Gao, Li-Jun ; Yang, Xiao-Gang 1; Fang, Shao-Ming 1
刊名	DALTON TRANSACTIONS
	2013
卷号	42 期号:43 页码:15317-15325
ISSN号	1477-9226
DOI	10.1039/c3dt51743h
英文摘要	Reaction of the chiral ligand (-)-4,5-pinenepyridyl-2-pyrazine (L) with Ln(hfac)(3)center dot 2H(2)O precursors [hfac(-) = 1,1,1,5,5,5-hexafluoroacetylacetonate, Ln = Sm3+ (1), Eu3+ (2), Tb3+ (3) and Dy3+ (4)] in methanol solution led to the formation of four noncentrosymmetric lanthanide complexes with the general formula [Ln(hfac)(3)L](n)center dot H2O. The single-crystal X-ray diffraction analyses revealed that they are isostructural and take a one-dimensional (1D) chain structure based on the Ln(hfac) 3L repeating units, in which the nine-coordinate Ln(3+) ions reside in a tricapped trigonal prism (TTP) environment never reported in previous 1D chain lanthanide complexes. The investigations of their photophysical properties showed that complexes 1, 2 and 3 exhibit characteristic emissions of Sm3+, Eu3+ and Tb3+ ions with respective luminescent lifetime values of 0.065, 1.066 and 0.129 ms, while complex 4 does not display any emission. The different luminescent intensities and lifetimes among them were further discussed in detail. Moreover, the magnetic properties of complexes 1-4 were assessed with a special emphasis on the Dy3+ complex 4. Alternating-current (ac) magnetic susceptibility measurements indicated that field-induced two-step slow magnetic relaxation processes were observed in 4, indicating the single-molecule magnet (SMM) behavior of 4. In addition, the noncentrosymmetric complexes 1-4 crystallizing in the same polar point group (C-s) exhibit both ferroelectric and nonlinear optical properties at room temperature. All these features make them multifunctional crystalline molecule materials.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000325944000011
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/54063]
专题	中国科学院化学研究所
通讯作者	Li, Xi-Li
作者单位	1.Zhengzhou Univ Light Ind, Henan Prov Key Lab Surface & Interface Sci, Zhengzhou 450002, Peoples R China 2.Wenzhou Univ, Sch Chem & Mat Engn, Wenzhou 325027, Peoples R China 3.Chinese Acad Sci, Ctr Mol Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Xi-Li,Chen, Chun-Lai,Xiao, Hong-Ping,et al. Luminescent, magnetic and ferroelectric properties of noncentrosymmetric chain-like complexes composed of nine-coordinate lanthanide ions[J]. DALTON TRANSACTIONS,2013,42(43):15317-15325.
APA	Li, Xi-Li.,Chen, Chun-Lai.,Xiao, Hong-Ping.,Wang, Ai-Ling.,Liu, Cai-Ming.,...&Fang, Shao-Ming.(2013).Luminescent, magnetic and ferroelectric properties of noncentrosymmetric chain-like complexes composed of nine-coordinate lanthanide ions.DALTON TRANSACTIONS,42(43),15317-15325.
MLA	Li, Xi-Li,et al."Luminescent, magnetic and ferroelectric properties of noncentrosymmetric chain-like complexes composed of nine-coordinate lanthanide ions".DALTON TRANSACTIONS 42.43(2013):15317-15325.