Monodisperse Platinum Nanospheres with Adjustable Diameters from 10 to 100 nm: Synthesis and Distinct Optical Properties

被引：316

作者：

Bigall, Nadja C. ^{[1
]}

Haertling, Thomas ^{[2
]}

Klose, Markus ^{[1
]}

Simon, Paul ^{[3
]}

Eng, Lukas M. ^{[2
]}

Eychmueller, Alexander ^{[1
]}

机构：

[1] Tech Univ Dresden, Inst Phys Chem & Elektrochem, D-01062 Dresden, Germany

[2] Tech Univ Dresden, Inst Angew Photophys, D-01069 Dresden, Germany

[3] Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany

来源：

NANO LETTERS | 2008年 / 8卷 / 12期

关键词：

D O I：

10.1021/nl802901t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present a facile and reproducible method for synthesizing monodisperse platinum (Pt) spheres with sizes ranging from 10 to 100 nm in diameter and exceptionally small standard deviations of 3% for large spheres. The reaction takes place in aqueous solution using a multistep seed-mediated approach. The Pt nanospheres consist of several small crystallites resulting in a surface roughness of 5-10 nm. Extinction spectra are measured from particles dispersed in water and calculated for single particles which are found to be in excellent agreement. We obtain a linear correlation between the plasmon extinction maximum (from UV to the visible regions) and the particle diameter which might be of value for experimentalists in the field.

引用

页码：4588 / 4592

页数：5

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