Determining electronic spectra at interfaces by electronic sum frequency generation: one- and two-photon double resonant oxazine 750 at the air/water interface.
Determining electronic spectra at interfaces by electronic sum frequency generation: one- and two-photon double resonant oxazine 750 at the air/water interface.
复制标题
通过电子和频率生成确定界面处的电子光谱：空气/水界面处的一光子和两光子双共振恶嗪 750。
DOI：
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发表时间：
2006
影响因子：
4.4
通讯作者：
T. Tahara
中科院分区：
文献类型：
--
作者：
S. Yamaguchi;T. Tahara
利用多路电子和频发生（ESFG）光谱技术，测量了染料恶嗪750（Oxazine 750，OX 750）在空气/水界面上的二阶非线性电子光谱.研究了ESFG光谱的激发波长依赖性，并进行了全局拟合分析以区分单光子和双光子共振的贡献。分析得到了线性界面电子光谱的单光子和双光子共振区域，这可以直接比较散装吸收光谱。提出了一种新的线性界面电子光谱的二维图，以图形方式表示界面分子的电子结构的所有基本信息。在ESFG光谱的新分析基础上，讨论了OX 750在界面处的光谱性质。
The second-order nonlinear electronic spectra were measured for a dye oxazine 750 (OX750) adsorbed at the air/water interface using the multiplex electronic sum frequency generation (ESFG) spectroscopy recently developed by our group. The excitation-wavelength dependence of the ESFG spectrum was investigated, and a global fitting analysis was performed to separate contributions of one- and two-photon resonances. The analysis yielded linear interface electronic spectra in the one- and two-photon resonance regions, which can be directly compared to bulk absorption spectra. A two-dimensional plot of the linear interface electronic spectra is newly proposed to graphically represent all the essential information on the electronic structure of interfacial molecules. On this new analytical basis of the ESFG spectroscopy, the spectroscopic properties of OX750 at the interface are discussed.