The influence of complexing agent concentration on particle size in the process of SERS active silver colloid synthesis
The influence of complexing agent concentration on particle size in the process of SERS active silver colloid synthesis
复制标题
DOI：
10.1039/b417007e
复制
发表时间：
2005-01-01
影响因子：
--
通讯作者：
Zboril, R
中科院分区：
文献类型：
--
作者：
Kvítek, L;Prucek, R;Zboril, R
本文报道了一步化学还原法制备粒径在45 ~ 380 nm范围内可控的银胶体颗粒。用不同还原糖还原[Ag（NH3）（2）]（+）络合物制备了银颗粒，并通过透射电子显微镜（TEM）、动态光散射（DLS）、紫外-可见光谱（UV-VIS）对银颗粒进行了表征。反应混合物中氨的浓度和还原糖的选择是控制颗粒尺寸的关键参数。合成的银胶体颗粒被成功地测试用于表面增强拉曼光谱（Sers）与1-甲基腺嘌呤作为测试物质。
A one-step chemical reduction route towards silver colloid particles with controllable sizes ranging from 45 to 380 nm is reported in this article. Silver particles, prepared by the reduction of [Ag(NH3)(2)](+) complex with various reducing sugars, were characterised by means of transmission electron microscopy ( TEM), dynamic light scattering ( DLS) measurement of particle size distribution, and UV-VIS spectroscopy. The concentration of ammonia in the reaction mixture and the choice of the reducing sugar are the key parameters in the control of particle size. Synthesised silver colloid particles were successfully tested for use in surface-enhanced Raman spectroscopy (SERS) with 1-methyladenine as a testing substance.