Ultrasonic-Assisted Synthesis of Monodisperse Ag Nanoparticles and Their Applications in Surface Enhanced Raman Scattering and Fluorescence Enhancement

Ultrasonic-Assisted Synthesis of Monodisperse Ag Nanoparticles and Their Applications in Surface Enhanced Raman Scattering and Fluorescence Enhancement
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超声辅助合成单分散银纳米粒子及其在表面增强拉曼散射和荧光增强中的应用

DOI:
10.1088/1674-0068/25/04/501-506
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发表时间:
2012-08
影响因子:
1
通讯作者:
Yang, Qing
Yang, Qing
中科院分区:
化学4区
文献类型:
--
作者:
Bi, Xia;Zuo, Jian;Yang, Qing

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以油胺(OAM)和油酸(OA)为催化剂,采用超声合成法在室温下还原硼烷叔丁胺,合成了直径约3.4 nm的单分散银纳米粒子。研究了反应时间、OAM与OA的摩尔比等反应参数,发现这些参数对产物的形态和尺寸有重要影响。同时,表面增强拉曼光谱(SERS)特性表明,该银纳米粒子对模型分子罗丹明6G具有较高的表面增强拉曼光谱效应。双光子荧光图像显示银纳米粒子具有较高的荧光增强性能。
Monodisperse Ag nanoparticles with diameters of about 3.4 nm were synthesized by a facile ultrasonic synthetic route at room temperature with the reduction of borane-tert-butylamine in the presence of oleylamine (OAm) and oleic acid (OA). The reaction parameters of time, the molar ratios of OAm to OA were studied, and it was found that these parameters played important roles in the morphology and size of the products. Meanwhile, surface enhanced Raman spectrum (SERS) property suggested the Ag nanoparticles exhibited high SERS effect on the model molecule Rhodamine 6G. And also, two-photon fluorescence images showed that the silver nanoparticles had high performances in fluorescence enhancement.
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