Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Design and synthesis of near-infrared emissive lanthanide complexes based on macrocyclic ligands

Language

English

Abstract

This review firstly summarizes our recent work on the preparation and photophysical properties of cationic or neutral lanthanide(III) monoporphyrinate complexes, as well as some bridging dinuclear complexes, in which the porphyrinate anion can sensitize the NIR emission of NdIII, Yb III and ErIII ions by serving as an antenna that absorbs visible light and transfers the energy to the excited state of the lanthanide(III) ion, followed by relaxation through the NIR emission. Next, several d-f heterobimetallic diporphyrin complexes, in which a transition metal (M = Zn, Pd, and Pt) porphyrinate moiety serves as a donor by transferring its energy to the Yb3+ ion and enhances the NIR emission, are described. In addition, the synthesis and photophysical properties of some GdIII porphyrinate complexes and monophthalocyaninato lanthanide complexes are also described in this contribution. Apart from the above compounds, we also discuss the construction of multidecker multimetallic lanthanide Schiff base assemblies, which demonstrate that these varieties of salen-type Schiff base ligands can stabilize LnIII centers and provide the antenna for lanthanide luminescence. By taking advantage of the absorption and emission properties of transition-metal Schiff base complexes, multinuclear and polynuclear Zn II-LnIII Schiff base complexes have also been constructed with improved luminescence properties. Various synthetic strategies have been described for encapsulating lanthanide ions into molecular edifices and making use of macrocyclic (viz. porphyrins, phthalocyanines and their derivatives) or acyclic ligands as well as d-transition-metal complexes (i.e. Schiff base and their transition-metal complexes) to sensitize the near-infrared-emitting trivalent lanthanide ions. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords

Lanthanides, Luminescence, Macrocyclic ligands, Porphyrinoids

Publication Date

2011

Source Publication Title

European Journal of Inorganic Chemistry

Volume

2011

Issue

30

Start Page

4651

End Page

4674

Publisher

Wiley-VCH Verlag

DOI

10.1002/ejic.201100481

Link to Publisher's Edition

http://dx.doi.org/10.1002/ejic.201100481

ISSN (print)

14341948

ISSN (electronic)

10990682

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