Dynamic Monitoring of Molecular Structure at Solid/Liquid Interfaces

固/液界面分子结构的动态监测

• 批准号: 13304047
• 负责人: UOSAKI Kohei
• 金额: $ 32.36万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13304047/
• 关键词: Self-assembled monolayer; Solid; liquid interface; Sun frequency generation; Visible pump IR probe technique; Scanning probe microscopy; Surface x-ray scattering; Quartz crystal microbalanc; Semiconductor nanocluster; 溶液界面; SFG; 可視光ポンプ-SFGプローブ法

・Construction of Sun frequency generation (SFG) system for dynamic structure change.(a)A pump line using 355nm excitation beam was added to a ps-based SFG system so that time dependent structure change can be followed with 〜2Ops time resolution.(b)A broad band SFG system was constructed based on a visible pump IR probe system using 100 fs laser.・Applications of the SFG systems to solid/liquid interface.(a)Monitoring of TiO_2 surface for the conversion to hydrophilic surface and adsorption of alcohol.TiO_2 is the most studied photocatalyst and conversion of hydrophobic surface to hydrophilic surface by UV illumination is an interesting process. Here, SFG was used to monitor the conversion process from hydrophobic to hydrophilic surface and the adsorption of alcohol.(b)Carrier dynamics in semiconductor nanoclustersSemiconductor nanoclusters attract much attention due to their unique optical properties. Photoexcited carrier (electron and holes) dynamics in CdSSe nanoclusters dispersed in glass and CdS nanoclusters in reversed micelles were followed by visible pump-IR absorption probe technique.(c)Determination of water structure at electrode/electrolyte interface.Although structure of water at electrode surface attracts much interests from both fundamental and application view points, it is not well understood due to the limitation of techniques. Here, we were successful to measure the water structure at gold film electrode as a function of electrode potential using SFG.

・构建用于动态结构变化的太阳频率发生（SFG）系统。（a）将使用 355nm 激发光束的泵浦线添加到基于 ps 的 SFG 系统中，以便可以以〜2Ops 时间分辨率跟踪时间相关的结构变化。（b）基于使用 100 fs 激光的可见泵浦红外探针系统构建宽带 SFG 系统。・SFG 系统在固/液界面中的应用。（a）监测 TiO_2表面用于转化为亲水表面并吸附酒精。TiO_2是研究最多的光催化剂，通过紫外照射将疏水表面转化为亲水表面是一个有趣的过程。在这里，SFG被用来监测从疏水表面到亲水表面的转化过程以及醇的吸附。(b)半导体纳米团簇中的载流子动力学半导体纳米团簇由于其独特的光学性质而备受关注。采用可见光泵浦红外吸收探针技术，对分散在玻璃中的 CdSSe 纳米团簇和反胶束中的 CdS 纳米团簇中的光激发载流子（电子和空穴）动力学进行了跟踪。 技术。在这里，我们成功地使用 SFG 测量了金膜电极上的水结构作为电极电势的函数。

项目成果

A.Sato et al.: "A Ligand Substitution Reaction of Oxo-centred Triruthenium Complexes Assembled as Monolayers on Gold Electrodes"Physical Chemistry Chemical Physics. 3. 3420-3426 (2001)

A.Sato 等人：“在金电极上组装成单层的氧中心三钌配合物的配体取代反应”物理化学化学物理。

T.Awatani et al.: "Second Harmonic Generation Study on Electrochemical Deposition of Palladium on a Polycrystalline Gold Electrode"J.Electroanal.Chem.. 524-525. 184-193 (2002)

T.Awatani 等人：“多晶金电极上钯电化学沉积的二次谐波产生研究”J.Electroanal.Chem. 524-525。

S.Ye: "Surface Molecular Structures of Langmuir-Blodgett Films of Stearic Acid on Sol Substrates Studied by Sum Frequency Generation Spectroscopy"Langmuir. 19・6. 2238-2242 (2003)

S.Ye：“通过和频发生光谱研究硬脂酸基质上的 Langmuir-Blodgett 薄膜的表面分子结构”Langmuir，2238-2242 (2003)。

S.Ye et al.: "Spectroscopic Studies on Electroless Deposition of Copper on a Hydrogen-Terminated Si(111) Surface in Fluoride Solutions"Electrochem.Soc.. 148,No.6. C421-C426 (2001)

S.Ye 等人：“氟化物溶液中氢封端的 Si(111) 表面铜化学沉积的光谱研究”Electrochem.Soc. 148，No.6。

T.Kondo et al.: "A Rotating Gold Ring-Gold Disk Electrode Study on Electrochemical Reductive Desorption and Oxidative Readsorption of a Self-Assembled Monolayer of Dodecanethiol"J.Electroanal.Chem.. 538-539. 59-63 (2002)

T.Kondo 等人：“十二烷硫醇自组装单层电化学还原解吸和氧化再吸附的旋转金环-金盘电极研究”J.Electroanal.Chem. 538-539。