摘要
和频振动光谱中基底信号和分子共振信号发生相干叠加,因此在分析和频振动光谱时需要考虑基底信号的影响。使用和频振动光谱分析金表面的正十八烷基硫醇自组装分子膜,结果表明,基底信号不仅使分子信号从正峰变为负峰,还能够使弱的分子信号在和频振动光谱中得到增强。
Substrate signals can coherently interfere with molecular signals in sum frequency generation vibrational spectroscopy.Therefore,it is necessary to consider the influence of substrate signals when analyzing sum frequency generation vibrational spectra.The self-assembled monolayer 1-octadecanethiol on Au was investigated by summing frequency generation vibrational spectroscopy.The results show that the substrate signals not only make the shapes of molecular signals change from peaks to dips,but also enhance the weak molecular signals.
出处
《中国科技论文》
CAS
北大核心
2014年第9期977-980,共4页
China Sciencepaper
基金
高等学校博士学科点专项科研基金资助项目(20110121110015)
关键词
分析化学
和频振动光谱
基底信号
分子信号
analytical chemistry
sum frequency generation vibrational spectroscopy
substrate signals
molecular signals
