Square structures and photophysical properties of Zn2Ln2 complexes (Ln = Nd, Eu, Sm, Er, Yb)

Hai-Bing Xu; Hui-Min Wen; Zhong-Hui Chen; Jia Li; Lin-Xi Shi; Zhong-Ning Chen

doi:10.1039/B919170D

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Square structures and photophysical properties of Zn₂Ln₂ complexes (Ln = Nd, Eu, Sm, Er, Yb)†

Hai-Bing Xu,*^a Hui-Min Wen,^a Zhong-Hui Chen,^a Jia Li,^a Lin-Xi Shi^a and Zhong-Ning Chen*^a

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* Corresponding authors

^a State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, China
E-mail: haibingxu@fjirsm.ac.cn, czn@fjirsm.ac.cn
Fax: 86-591-8379-2346

Abstract

Heterotetranuclear Zn₂Ln₂ (Ln = Nd 2, Eu 3, Sm 4, Er 5, Yb 6) complexes {Zn₂(Mq)₂(tpyO)₂}{(Ln(hfac)₃)₂} (HMq = 2-methyl-8-hydroxylquinoline, tpyOH = [2,2′:6′2′′]terpyridin-4′-ol, hfac = hexafluoroacetylacetonate) display novel square structures ligated by bifunctional ligands tpyO (mono- and tridentate) and Mq (chelating and bridging μ-phenoxo). These compounds exhibit sensitized lanthanide emission upon photo-excitation of ZnMq/tpy antenna chromophores. By virtue of the dual luminescence with complementary colors, the ZnMq/tpyO-based cyan emission and Sm^III-centered orange luminescence are combined to generate a white-light emission in Zn₂Sm₂ (4) complex.

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Article information

DOI: https://doi.org/10.1039/B919170D
Article type: Paper
Submitted: 15 Sep 2009
Accepted: 19 Nov 2009
First published: 24 Dec 2009

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Dalton Trans., 2010,39, 1948-1953

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Square structures and photophysical properties of Zn₂Ln₂ complexes (Ln = Nd, Eu, Sm, Er, Yb)

H. Xu, H. Wen, Z. Chen, J. Li, L. Shi and Z. Chen, Dalton Trans., 2010, 39, 1948 DOI: 10.1039/B919170D

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Dalton Transactions