Jump to main content
Jump to site search

Issue 11, 2009
Previous Article Next Article

Hetero-trinuclear near-infrared (NIR) luminescent Zn2Ln complexes from Salen-type Schiff-base ligands

Author affiliations

Abstract

With the Zn–Schiff-base [ZnL11(Py)] or [ZnL22(Py)] from the simple Salen-type Schiff-base ligand H22L11 or H22L22 (H22L11: N,N′-bis(salicylidene)ethylene-1,2-diamine; H22L22: N,N′-bis(salicylidene)phenylene-1,2-diamine) without the outer O2O2 portion as the precursor, two series of eight trinuclear Zn2Ln arrayed complexes (Ln = Nd (1 or 5), Yb (2 or 6), Er (3 or 7) or Gd (4 or 8)) have been obtained by the further reaction with Ln(NO3)3·6H2O, respectively. The results of photophysical studies show that the strong and characteristic NIR luminescence with emissive lifetimes in microsecond ranges, has been sensitized from the excited state (1LC and 3LC or only 1LC) of the ligand, whereas the Zn(II)-based visible luminescence is mostly quenched because of quite effective intramolecular energy transfer from the ligand-centered excited state of the Zn(II)–Schiff base complex to Ln(III) ions.

Graphical abstract: Hetero-trinuclear near-infrared (NIR) luminescent Zn2Ln complexes from Salen-type Schiff-base ligands

Back to tab navigation

Supplementary files

Publication details

The article was received on 31 May 2009, accepted on 10 Aug 2009 and first published on 22 Sep 2009


Article type: Paper
DOI: 10.1039/B9NJ00228F
Citation: New J. Chem., 2009,33, 2326-2334
  •   Request permissions

    Hetero-trinuclear near-infrared (NIR) luminescent Zn2Ln complexes from Salen-type Schiff-base ligands

    W. Bi, T. Wei, X. Lü, Y. Hui, J. Song, S. Zhao, W. Wong and R. A. Jones, New J. Chem., 2009, 33, 2326
    DOI: 10.1039/B9NJ00228F

Search articles by author

Spotlight

Advertisements