Skip to main content
Article
Photo-luminescent hetero-trinuclear Zn2Ln (Ln = Nd, Yb, Er or Gd) complexes based on the binuclear Zn2L precursor
Inorganic Chemistry Communications
  • Yao Zhang, Shaanxi Key Laboratory of Degradable Medical Material, Shaanxi Key Laboratory of Physico-inorganic Chemistry, Northwest University
  • Weixu Feng, Shaanxi Key Laboratory of Degradable Medical Material, Shaanxi Key Laboratory of Physico-inorganic Chemistry, Northwest University
  • Han Liu, Shaanxi Key Laboratory of Degradable Medical Material, Shaanxi Key Laboratory of Physico-inorganic Chemistry, Northwest University
  • Zhao Zhang, Shaanxi Key Laboratory of Degradable Medical Material, Shaanxi Key Laboratory of Physico-inorganic Chemistry, Northwest University
  • Xingqiang Lü, Shaanxi Key Laboratory of Degradable Medical Material, Shaanxi Key Laboratory of Physico-inorganic Chemistry, Northwest University
  • Jirong Song, Shaanxi Key Laboratory of Degradable Medical Material, Shaanxi Key Laboratory of Physico-inorganic Chemistry, Northwest University
  • Daidi Fan, Shaanxi Key Laboratory of Degradable Medical Material, Shaanxi Key Laboratory of Physico-inorganic Chemistry, Northwest University
  • Wai-Kwok Wong, Department of Chemistry, Hong Kong Baptist University
  • Richard A. Jones, Department of Chemistry and Biochemistry, University of Texas at Austin, 1 University Station A5300
Document Type
Journal Article
Language
English
Abstract
With the binuclear Zn 2L ([Zn 2L(OAc) 2(H 2O)], 1) compound from the Salen-type Schiff-base ligand H 2L (H 2L: N,N′-bis(salicylidene)cyclohexane- 1,2-diamine) with the flexible linker as the precursor, a series of hetero-trinuclear Zn 2Ln complexes (Ln = Nd (2), Ln = Yb (3), Ln = Er (4) or Ln = Gd (5)) have been obtained by further reaction with Ln(OAc) 3·6H 2O. The result of their photophysical properties shows that the strong and characteristic NIR luminescence with emissive lifetimes in the ranges of microseconds for each of the complexes 2-4, has been sensitized from the excited state ( 1LC and 3LC) of the Salen-type Schiff-base ligand with the flexible linker. Especially, the almost planar arrangement of two energy donors of ZnL components around the Ln 3 + ion for the larger conjugation effect, endowing the energy level's good match between the excited state ( 3LC) of the chromophore to the corresponding Ln 3 + ion's exciting state, results in the enhancement of their NIR luminescence. © 2012 Elsevier B.V. All rights reserved.
Keywords
  • Binuclear Zn 2,
  • Hetero-trinuclear Zn 2Ln complexes,
  • NIR luminescence,
  • Schiff-base
Publication Date
1-1-2012
Publisher
Elsevier
DOI
10.1016/j.inoche.2012.08.011
Citation Information
Yao Zhang, Weixu Feng, Han Liu, Zhao Zhang, et al.. "Photo-luminescent hetero-trinuclear Zn2Ln (Ln = Nd, Yb, Er or Gd) complexes based on the binuclear Zn2L precursor" Inorganic Chemistry Communications Vol. 24 (2012) p. 148 - 152 ISSN: 13877003
Available at: http://works.bepress.com/zhao-zhang/18/