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Optical absorbance of colloidal suspensions of silver polyhedral nanoparticles

被引：77
作者：
González, AL
Noguez, C
Ortiz, GP
Rodríguez-Gattorno, G
机构：
[1] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico
[2] Univ Nacl Autonoma Mexico, REGINA Network Nanosci Res, Mexico City 04510, DF, Mexico
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2005年 / 109卷 / 37期
关键词：
D O I：
10.1021/jp0533832
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 optical absorption of colloidal suspensions made of silver nanoparticles with polyhedral shapes is studied experimentally and theoretically. The influence of the shape on the optical response is investigated by comparing the measured absorbance with theoretical results for icosahedral, decahedral, and cuboctahedral silver nanoparticles. The theoretical spectra are obtained within the discrete dipole approximation. We find that colloidal suspensions of silver nanoparticles with a small dispersion of size distribution show very few structural shapes.
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页码：17512 / 17517
页数：6
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