Growth of silver colloidal particles obtained by citrate reduction to increase the Raman enhancement factor

被引：194

作者：

Rivas, L

Sanchez-Cortes, S

García-Ramos, JV

Morcillo, G

机构：

[1] CSIC, Inst Estructura Mat, E-28006 Madrid, Spain

[2] Univ Nacl Educ Distancia, Dept Quim Organ & Biol, E-28040 Madrid, Spain

来源：

LANGMUIR | 2001年 / 17卷 / 03期

关键词：

D O I：

10.1021/la001038s

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A method is reported for obtaining silver colloids with a large particle size. It is based on the growth of seed colloidal particles obtained by chemical reduction of silver nitrate with citrate. These colloids were characterized by means of UV-visible spectroscopy and transmission electron microscopy. The nucleation mechanism is discussed on the basis of the morphology and size of the resulting particles. Moreover, the surface-enhanced Raman scattering activity of the resulting colloids was evaluated in the near-infrared region by using 1,5-dimethylcytosine as adsorbate.

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页码：574 / 577

页数：4

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