Development of low-frequency domain spectroscopy at liquid interfaces using ultra-short laser pulse and its applications

超短激光脉冲液体界面低频域光谱研究及其应用

• 批准号: 14350442
• 负责人: SAWADA Tsuguo
• 金额: $ 9.41万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14350442/
• 关键词: interface; ultra-short laser pulse; low-frequency; second harmonic generation; coherent; biological membrane; 非線形現象; 第2高調波発生; 非線形発振現象; 低波数振動; コヒーレント振動; 第二高調波発生法; 過渡格子; 分子間相互作用; 誘導ラマン

The aim of this research is the observation of the collective behavior of the molecular a ssemblies at liquid interfaces in the low-frequency domain. At first, as important systems of the collective behaviors of the molecular assemblies at liquid interfaces, we investigate d the dynamic behavior of surfactants molecules in nonlinear chemical oscillation system and the kinetics of the hydrolysis reactions of biological membrane. We obtained new information of these systems in. terms of the dynamic behavior of the ion transfer across the membrane and specific interaction between ions and molecules at the interfaces.We have developed the equipment to observe vibrational spectra of the molecular assemblies at liquid interfaces in low-frequency domain. We have succeeded to obtain low-frequency vibrational spectrum from the surface of GaAs plate through the change of SHG signals. induced by the change of the nonlinear susceptibility due to the coherent vibration of the molecular assemblies or lattices. We have also applied the transient grating configuration to the abovementioned system, we successfully obtained background free signal from the air/liquid interface where coumarin dyes were dispersed.

这项研究的目的是在低频域观察分子在液体界面上的集体行为。首先，作为研究分子在液界面上集体行为的重要系统，我们研究了表面活性剂分子在非线性化学振荡系统中的动力学行为和生物膜的水解反应动力学。我们在中获得了关于这些系统的新信息。根据离子在膜上传递的动力学行为和界面上离子与分子之间的特殊相互作用，我们研制了在低频域观测液体界面分子集合体振动光谱的装置。通过倍频信号的变化，我们成功地获得了GaAs板表面的低频振动谱。由于分子组装体或晶格的相干振动引起的非线性极化率的变化。我们还将暂态光栅结构应用到上述系统中，成功地从香豆素染料分散的气/液界面获得了无背景信号。

项目成果

Masahiko Takahashi, Hiroharu Yui, Yasuhiro Ikezoe, Tsuguo Sawada: "Anomalous Change in Interfacial Tension Induced by Collapse of AOT Microemulsions at Heptane/Water Interface"Chemical Physics Letters. (accepted). (2004)

Masahiko Takahashi、Hiroharu Yui、Yasuhiro Ikezoe、Ttsuguo Sawada：“庚烷/水界面 AOT 微乳液崩溃引起的界面张力异常变化”化学物理快报。

H.Yui, M.Takei, Y.Hirose, T.Sawada: "Ultrafast Transient Lens Spectroscopy of Photoisomerization Dynamics of Azocompaunds in Confined Nanospace of Cyclodextrins."Review of Scientific Instruments. 74. 907 (2004)

H.Yui、M.Takei、Y.Hirose、T.Sawada：“环糊精受限纳米空间中偶氮化合物光异构化动力学的超快瞬态透镜光谱。”科学仪器评论。

Tsuyoshi Sugimoto, Yasushi Hirose, Hiroharu Yui, Tsuguo Sawada: "Development of total internal reflection ultrafast transient lens method for studying molecular dynamics on interface"Analytical Chemistry. (accepted). (2004)

Tsuyoshi Sugimoto、Yasushi Hirose、Hiroharu Yui、Ttsuguo Sawada：“开发用于研究界面分子动力学的全内反射超快瞬态透镜方法”分析化学。

T.Sugimoto, Y.Hirose, H.Yui, T.Sawada: "Development of total internal reflection ultrafast transient lens method for studying molecular dynamics on interface"Analytical Chemistry. (in press)(accepted). (2004)

T.Sugimoto、Y.Hirose、H.Yui、T.Sawada：“开发用于研究界面分子动力学的全内反射超快瞬态透镜方法”分析化学。

Yasuhiro Ikezoe, Sadahiro Ishizaki, Tetsuya Takahashi, Hiroharu Yui, Tsuguo Sawada: "Hydrodynamically Induced. Chemical Oscillation at a Water/Nitrobenzene Interface"Journal of Colloid and Interface Science. (In press).

Yasuhiro Ikezoe、Sadahiro Ishizaki、Tetsuya Takahashi、Hiroharu Yui、Ttsuguo Sawada：“流体动力学诱导。水/硝基苯界面的化学振荡”胶体与界面科学杂志。