Issue 29, 2013
From the journal:

Dalton Transactions

Synthesis, structures and luminescent properties of a series of novel SrII–LnIII (Ln = Eu, Gd, Tb) coordination polymers†

Yanmei Chen,a   Wenqian Chen,a   Zhenghua Ju,b   Qian Gao,a   Tao Lei,c   Wei Liu,a   Yahong Li,*a   Dandan Gaoc  and  Wu Lic  

* Corresponding authors

a Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
E-mail: liyahong@suda.edu.cn

b Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China

c Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China

Abstract

Eight novel SrII–LnIII heteronuclear coordination polymers based on pyridine-2,6-dicarboxylic acid (H2pda) and imidazole (im) ligands, namely, [LnSr(pda)3(H2O)5]·Him·H2O (Ln = Eu (1), Gd (2), Tb (3)), [Ln2Sr(pda)6(H2O)5]·4Him·C2H5OH·nH2O (Ln = Eu (4), n = 5; Gd (5), n = 4), [LnSr(pda)3(H2O)4]·Him·3H2O (Ln = Gd (6), Tb (7)), and [GdSr(pda)3(H2O)5]·Him·C2H5OH·3H2O (8), have been prepared by employing different amounts of imidazole. X-ray crystal structure analysis reveals that these compounds exhibit a rich structural chemistry. Complexes 1–3 possess 2-D frameworks. Complexes 4–5, 6–7, and 8 exhibit three types of 1-D chain structure. The structures of the complexes could be rationally tuned via adding different amounts of imidazole. The luminescent properties of these complexes have been investigated. The results show that EuIII and TbIII complexes exhibit intense red and green luminescence emission which are characteristics of TbIII and EuIII, respectively. Solid-state quantum yield and the lifetime of these complexes are also reported.

Graphical abstract: Synthesis, structures and luminescent properties of a series of novel SrII–LnIII (Ln = Eu, Gd, Tb) coordination polymers

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Article information

DOI
https://doi.org/10.1039/C3DT51184G
Article type
Paper
Submitted
06 May 2013
Accepted
21 May 2013
First published
22 May 2013

Dalton Trans., 2013,42, 10495-10502

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Synthesis, structures and luminescent properties of a series of novel SrII–LnIII (Ln = Eu, Gd, Tb) coordination polymers

Y. Chen, W. Chen, Z. Ju, Q. Gao, T. Lei, W. Liu, Y. Li, D. Gao and W. Li, Dalton Trans., 2013, 42, 10495 DOI: 10.1039/C3DT51184G

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