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

Authors

Jian Zhang, University of Nebraska-LincolnFollow
Chad M. Shade, University of Pittsburgh
Demetra A. Chengelis, University of Pittsburgh
Stéphane Petoud, University of PittsburghFollow

Document Type

Article

Date of this Version

11-2007

Comments

Published in Journal of the American Chemical Society 129:48 (2007), pp. 14834–14835; doi: 021/ja074564f Copyright © 2007 American Chemical Society. Used by permission.

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.