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.

・为动态结构变化的构建太阳频率产生（SFG）系统。（a）使用355nm兴奋的泵线添加到基于PS的SFG系统中，以便可以使用〜2OPS时间分辨率进行时间依赖的结构变化。（b）基于可见的泵率系统，基于使用100 fs lase的可见泵系统构建的宽带SFG系统是固定的。 TIO_2将转化为亲水性表面并增加酒精的表面。TIO_2是锻炼最多的光催化剂，疏水表面通过紫外线照明转化为亲水性表面是一个有趣的过程。在这里，SFG用于监测从疏水到亲水性表面的转化过程，并增加酒精的吸附。（b）半导体纳米群体中的载体动力学由于其独特的光学特性而引起了极大的关注。 CDSSE纳米簇中的光激发载体（电子和孔）动力学分散在玻璃和CDS纳米聚集体中，然后通过可见的泵 - IR抽象探针技术进行。（c）确定电极/电力界面的水结构。技术。在这里，我们成功地测量了金膜电极处的水结构，这是使用SFG的电极电势的函数。

项目成果

T.Kondo: "A Novel Spectroelectrochemical Cell for in situ Surface X-ray Scattering Measurements of Single Crystal Disk Electrodes"Electrochimica Acta. 47. 3075-3080 (2002)

T.Kondo：“用于单晶圆盘电极原位表面 X 射线散射测量的新型光谱电化学池”《电化学学报》。

I.Yagi et al.: "Direct Proof for Electrochemical Substitution of Surface Hydrogen of Boron-doped Diamond Electrode by TOF-ESD Method"Chem.Lett.. 32,No.11. 1050-1051 (2003)

I.Yagi 等人：“通过 TOF-ESD 方法直接证明硼掺杂金刚石电极表面氢的电化学取代”Chem.Lett.32，No.11。

S.Ye et al.: "Conformational Order of Octadecanethiol (ODT) Monolayer at Gold/Solution Interface : Internal Reflection Sum Frequency Generation (SFG) Study"Studies in Surf.Sci.and Catal.. 132. 705-710 (2001)

S.Ye 等人：“金/溶液界面处的十八烷硫醇 (ODT) 单分子层的构象顺序：内部反射和频率生成 (SFG) 研究”Surf.Sci.and Catal. 中的研究 132. 705-710 (2001)

S.Nihonyanagi et al.: "Sum Frequency Generation Study on the Molecular Structures at the Interfaces between Quartz Modified with Amino-Terminated Self-Assembled Monolayer and Electrolyte Solutions of Various pH and Ionic Strengths"Electrochim.Acta. 46,Nos

S.Nihonyanagi 等人：“氨基末端自组装单层改性石英与各种 pH 和离子强度的电解质溶液界面分子结构的和频发生研究”Electrochim.Acta。

J.Zhao: "Formation of Nanopatterns of a Self-Assembled Monolayer(SAM) within a SAM of Different Molecules Using a Current Sensing Atomic Force Microscope"Nano Letters. 2. 137-140 (2002)

J.Zhao：“使用电流传感原子力显微镜在不同分子的 SAM 内形成自组装单层 (SAM) 的纳米图案”《纳米快报》。