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Communication

A Strategy to Protect and Sensitize Near-Infrared Luminescent Nd³⁺ and Yb³⁺: Organic Tropolonate Ligands for the Sensitization of Ln³⁺-Doped NaYF₄ Nanocrystals

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Jian Zhang, Chad M. Shade, Demetra A. Chengelis, and Stéphane Petoud*

Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260

J. Am. Chem. Soc., 2007, 129 (48), pp 14834–14835

DOI: 10.1021/ja074564f

Publication Date (Web): November 10, 2007

In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.

, spetoud@pitt.edu

Abstract

A strategy to sensitize and protect near-infrared (NIR) emitting Nd³⁺ and Yb³⁺ is presented. Combining protection provided by the inorganic matrix of NaYF₄ nanocrystals and sensitization from tropolonate ligands capped on their surface, the lanthanide cation centered luminescence was observed through the ligand excitation. The extended lanthanide luminescence lifetimes indicate the success of this strategy.

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Published In Issue December 05, 2007
Received June 21, 2007
Revised October 12, 2007

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Communication

A Strategy to Protect and Sensitize Near-Infrared Luminescent Nd³⁺ and Yb³⁺: Organic Tropolonate Ligands for the Sensitization of Ln³⁺-Doped NaYF₄ Nanocrystals