Plasmonic Modulation of the Upconversion Fluorescence in NaYF4:Yb/Tm Hexaplate Nanocrystals Using Gold Nanoparticles or Nanoshells

被引：323

作者：

Zhang, Hua ^{[1
]}

Li, Yujing ^{[1
]}

Ivanov, Ivan A. ^{[2
]}

Qu, Yongquan ^{[2
]}

Huang, Yu ^{[1
,3
]}

Duan, Xiangfeng ^{[2
,3
]}

机构：

[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA

[3] Univ Calif Los Angeles, Calif Nanosyst Inst, Los Angeles, CA 90095 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2010年 / 49卷 / 16期

关键词：

fluorescence; nanoparticles; rare earth metals; surface plasmon resonance; upconversion; ENHANCED RAMAN-SCATTERING; PHOSPHOR REPORTERS; SURFACE; ABSORPTION; PARTICLES; DYNAMICS; BIOLOGY; FIELDS; ARRAYS; SIZE;

D O I：

10.1002/anie.200905805

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Figure Presented) 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=NCwith attached Au NPs; C=NC with Au shell; scale bar=50 nm). © 2010 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：2865 / 2868

页数：4

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