Detection and characterization of nanoparticles in suspension at low concentrations using the X-ray total scattering pair distribution function technique

被引：37

作者：

Terban, Maxwell W. ^{[1
]}

Johnson, Matthew ^{[2
]}

Di Michiel, Marco ^{[3
]}

Billinge, Simon J. L. ^{[1
,4
]}

机构：

[1] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA

[2] GlaxoSmithKline Med Res Ctr, Stevenage SG1 2NY, Herts, England

[3] ESRF, F-38043 Grenoble 9, France

[4] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA

来源：

NANOSCALE | 2015年 / 7卷 / 12期

关键词：

GOLD NANOPARTICLES; PLATINUM NANOPARTICLES; WATCHING NANOPARTICLES; PARTICLE GROWTH; PRUSSIAN BLUE; DIFFRACTION; EVOLUTION; KINETICS; PDF; NANOSTRUCTURE;

D O I：

10.1039/c4nr06486k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Difference atomic pair distribution function methods have been applied to detect and characterize nanoparticles suspended in a solvent at very dilute concentrations. We specifically consider nanoparticles of a pharmaceutical compound in aqueous solution using X-ray PDF methods, a challenging case due to the low atomic number of the nanoparticle species. The nanoparticles were unambiguously detected at the level of 0.25 wt%. Even at these low concentrations the signals were highly reproducible, allowing for reliable detection and quantitative analysis of the nanoparticle structure.

引用

页码：5480 / 5487

页数：8

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