Plasmonic modulation of the upconversion fluorescence in NaYF4 :Yb/Tm hexaplate nanocrystals using gold nanoparticles or nanoshells.

Abstract

Automatic upgrade: attachment of gold nanoparticles (NPs) onto upconversion nanocrystals (NCs) results in plasmonic interactions that lead to a significant enhancement of upconversion emission of more than 2.5. Conversely, formation of a gold shell greatly suppresses the NC emission because of considerable scattering of excitation irradiation (see picture; a=NC before seed attachment; b, c=NC with attached Au NPs; c=NC with Au shell; scale bar=50 nm).

DOI: 10.1002/anie.200905805

Cite this paper

@article{Zhang2010PlasmonicMO, title={Plasmonic modulation of the upconversion fluorescence in NaYF4 :Yb/Tm hexaplate nanocrystals using gold nanoparticles or nanoshells.}, author={Hua Zhang and Yujing Li and Ivan A Ivanov and Yongquan Qu and Yu Huang and Xiangfeng Duan}, journal={Angewandte Chemie}, year={2010}, volume={49 16}, pages={2865-8} }