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Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Synthesis, characterization, and photophysical properties of first heterobinuclear Zn-Ln (Ln = La, Nd, Eu, Gd, Tb, Er, and Yb) complexes based on asymmetric schiff-base ligand

Language

English

Abstract

With a novel asymmetric Schiff-base zinc complex ZnL(H 2 L = N-(3-methoxysalicylidene)-N-(5-(4-cyanophenyl)-3-methoxysalicylidene) phenylene-1, 2-diamine), obtained from phenylene-1, 2-diamine, 3-methoxysalicylaldehyde, and 5-(4-cyanophenyl)-3-methoxysalicylaldehyde, as the precursor, a series of heterobinuclear Zn-Ln complexes [ZnLnL(NO 3) 3 (CH 3 CN)] (Ln = La, 1; Ln = Nd, 2; Ln = Eu, 3; Ln = Gd, 4; Ln = Tb, 5; Ln = Er, 6; Ln = Yb, 7) were obtained by further reaction with Ln(NO3)3 · 6H2O. Photophysical studies of these complexes show that the strong and characteristic NIR luminescence with emissive lifetimes in the microsecond range has been sensitized from the excited state of the asymmetric Schiff-base ligand due to effective intramolecular energy transfer. © 2013 Copyright Taylor and Francis Group, LLC.

Keywords

asymmetric Schiff base, near-infrared, sensitization and energy transfer

Publication Date

2013

Source Publication Title

Spectroscopy Letters

Volume

46

Issue

2

Start Page

109

End Page

116

Publisher

Taylor & Francis

ISSN (print)

00387010

ISSN (electronic)

15322289

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