TITANIUM-DIOXIDE BASED SUBSTRATE FOR OPTICAL MONITORS IN SURFACE-ENHANCED RAMAN-SCATTERING ANALYSIS
TITANIUM-DIOXIDE BASED SUBSTRATE FOR OPTICAL MONITORS IN SURFACE-ENHANCED RAMAN-SCATTERING ANALYSIS
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DOI：
10.1021/ac00190a600
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发表时间：
1989-08-01
影响因子：
7.4
通讯作者：
VO-DINH, T
中科院分区：
文献类型：
--
作者：
BELLO, JM;STOKES, DL;VO-DINH, T
研究了光学监视器用于原位表面增强拉曼散射 (SERS) 分析。该光学监视器由固体表面组成，例如涂有 TI02 并覆盖有银层的玻璃板。 TI02为SERS工艺提供必要的表面亚微米粗糙度；本研究中使用的Ti02的标称粒径为0.2/um。研究了诸如条子厚度和TIO 2 量等基底条件对SERS强度的影响。其他实验参数（包括溶剂、激光功率和激发几何形状）被发现对溶液中模型化合物的 SERS 强度有影响。还表明，用这种方法获得的溶液 SERS 信号随时间非常稳定，并且 SERS 强度似乎没有受到激光辐射的显着影响。研究了该技术的分析品质因数，例如光谱特征、信号再现性和检测限，以证明这种新基材的分析潜力，可用作液体样品原位分析的光学监测器。
An optical monitor was Investigated for in situ surface-enhanced Raman scattering (SERS) analysis. This optical monitor consists of a solid surface such as a glass plate coated with TI02 and covered with a sliver layer. TheTI02 provides the necessary surface submicrometer roughness for the SERS process; the nominal particle diameter of Ti02 used in this study is 0.2/um. The effect of substrate conditions such as sliver thickness and amount of TI02on SERSintensity was Investigated. Other experimental parameters including the solvent, the laser power, and the excitation geometry were found to have an effect on the SERS intensity of the model compound In solution. It was also shown that the solution SERS signal obtained with this method was very stable with time, and the SERS intensity did not appear to be affected significantly by exposure to laser radiation. The analytical figures of merit of this technique such as spectral features, signal reproducibility, and limits of detection were investigated to demonstrate the analytical potential of this new substrate that can be used as an optical monitor for in situ analysis of liquid samples.