A small-molecular europium complex with anion sensing sensitivity

ISL OpenIR > 青海盐湖研究所知识仓储

	A small-molecular europium complex with anion sensing sensitivity
	Wang, Jianwei 1,2; Wu, Jiang 1,2; Chen, Yanmei 3; Wang, Haiping 1,2; Li, Yiran 1,2; Liu, Weisheng 1,2; Tian, Hao 1,2; Zhang, Ting 1,2; Xu, Jun 1,2; Tang, Yu 1,2
	2012
发表期刊	DALTON TRANSACTIONS
ISSN	1477-9226
卷号	41 期号:41 页码:12936-12941
摘要	A novel small-molecular europium(III) complex with quinoline derivative has been designed and prepared for anion recognition. This Eu3+ complex displays striking emission changes at 616 nm in response to NO3- and Cl-. What's more, the anion-selective luminescence enhancement is easily detected by the naked eye. UV, luminescence titration experiments and the Job plot analysis revealed that the ligand can form stable 1 : 1 complexes with Eu(NO3)(3) or EuCl3 in CH3CN; log K = 7.10 and 6.76 (295 K), respectively. The crystal structure shows that three oxygen atoms and one nitrogen atom of the ligand are approximately coplanar and wrap around the Eu3+ ion through a semicircle-shaped coordination structure and some unoccupied sites of the central europium ions are available for guest anions in the complexes. Thus, three nitrate ions are located in the gap of the semicircle. It is supposed that the mechanism of luminescence enhancement is of NO3- or Cl- anions squeezing out solvent molecules from the inner coordination sphere.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/2077
专题	青海盐湖研究所知识仓储
作者单位	1.Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 81008, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jianwei,Wu, Jiang,Chen, Yanmei,et al. A small-molecular europium complex with anion sensing sensitivity[J]. DALTON TRANSACTIONS,2012,41(41):12936-12941.
APA	Wang, Jianwei.,Wu, Jiang.,Chen, Yanmei.,Wang, Haiping.,Li, Yiran.,...&Tang, Yu.(2012).A small-molecular europium complex with anion sensing sensitivity.DALTON TRANSACTIONS,41(41),12936-12941.
MLA	Wang, Jianwei,et al."A small-molecular europium complex with anion sensing sensitivity".DALTON TRANSACTIONS 41.41(2012):12936-12941.

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