Nishi Naoya, Hobara Daisuke, Yamamoto Masahiro, Kakiuchi Takashi
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 606-8501, Japan.
Anal Sci. 2003 Jun;19(6):887-90. doi: 10.2116/analsci.19.887.
Sum frequency vibrational spectra for hexadecanethiol (HDT) adsorbed on thin gold film deposited on the surface of a CaF2 prism have been measured using total-internal reflection broad-bandwidth sum frequency generation (TIR-BBSFG) spectroscopy. The bands attributed to the CH3 symmetric and asymmetric stretching vibrational modes were observed in the sum frequency vibrational spectra. The orientation of the methyl groups was analyzed using the ratio of the intensities of the two modes. The methyl groups of HDT on the thin gold film were much more randomly orientated than those on Au( 111).
利用全内反射宽带和频产生（TIR-BBSFG）光谱法，测量了吸附在沉积于CaF2棱镜表面的薄金膜上的十六烷硫醇（HDT）的和频振动光谱。在和频振动光谱中观察到了归因于CH3对称和不对称伸缩振动模式的谱带。利用这两种模式强度的比值分析了甲基的取向。薄金膜上HDT的甲基比Au(111)上的甲基取向更随机。
