Analysis of the Shell Thickness Distribution on NaYF4/NaGdF4 Core/Shell Nanocrystals by EELS and EDS

被引：112

作者：

Abel, Keith A. ^{[1
]}

Boyer, John-Christopher ^{[1
]}

Andrei, Carmen M. ^{[2
]}

van Veggel, Frank C. J. M. ^{[1
]}

机构：

[1] Univ Victoria, Dept Chem, Victoria, BC V8W 3V6, Canada

[2] McMaster Univ, Canadian Ctr Electron Microscopy, Hamilton, ON L8S 4L7, Canada

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2011年 / 2卷 / 03期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

STRUCTURAL-CHARACTERIZATION; UPCONVERTING NANOPARTICLES; PHOTODYNAMIC THERAPY; CORE; SURFACE; PHASE; CDSE;

D O I：

10.1021/jz101593g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The structure and chemical composition of the shell distribution on NaYF4/NaCdF4 core/shell nanocrystals have been investigated with scanning transmission electron microscopy (STEM) electron energy loss spectroscopy (FELS) and energy dispersive X-ray spectroscopy (FDS). The core and shell contrast in the high-angle annular dark field (HAADE) images combined with the EELS and EDS signals indicate that Gd is indeed on the surface but for many of the particles, the shell growth was anisotropic.

引用

页码：185 / 189

页数：5

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