Development of in-situ analysis system for molecular layrs on solid surface solution.

固体表面溶液分子层原位分析系统的开发。

基本信息

批准号：
04555191
负责人：
UOSAKI Kohei
金额：
$ 9.54万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1994
项目状态：
已结题

项目摘要

Since observation and analysis of molecular layrs on solid surface in solution have been carried out separately by various techniques, it is rather difficult to capture real pictures of structure/orientation of molecular layrs accurately. In this study, new analysis systems which combine many techniques are developed. The detail is as fellows.1. In-situ FT-IR-Quartz Crystal Microbalance Combined System.A new FT-IR machine was purchased and a novel electrochemical IR cell which employs QCM as an electrode was designed and constructed. This cell permits QCM measurement possible even when the electrode was pressed against cell CaF_2 window during FT-IR measurement.Using this system, simultaneous monitoring of changes of interfacial mass and structure of self-assembled monolayr prepared under various conditions during application of electrodes potential was carried out.2. In-situ UV/VIS-Quartz Crystal Microbalance Combined System.Very thin metal layr (10-50nm) vacuum deposited on QCM was employed as an electrode.This electrode was placed in light path of UV/VIS spectrometer so that UV/VIS spectra and mass change can be measured simultaneously during electrochemical reactions. The effectiveness of this system was demonstrated for redox of viologen and Prussian blue.3. STM/AFM-Quartz Crystal Microbalance Combined System.STM and AFM systems were modified so that frequency of the QCM can be recorded simultaneously during STM/AFM imaging. The comparison between STM/AFM image and frequency image shows that the tip-substrate interaction causes the stress, resulting frequency change.

由于已经通过各种技术分别对溶液中固体表面上的分子层观察和分析，因此很难准确捕获分子层的结构/方向的真实图片。在这项研究中，开发了结合许多技术的新分析系统。细节是研究员1。原地FT-IR-Quartz Crystal微量平衡系统。购买了新的FT-IR机器，并设计和构造了使用QCM作为电极的新型电化学IR电池。即使在FT-IR测量过程中将电极压在电池CAF_2窗口上，该细胞也可以进行QCM测量。使用该系统，同时监测界面质量的变化以及在施加电极势能在各种条件下制备的自组装Monolayr的结构的变化。原位UV/Vis-Quartz晶体微量平衡系统组合系统。在QCM上沉积的非常薄的金属Layr（10-50nm）真空作为电极，将电极放置在UV/VIS光谱仪的光路径中，以便在电化学反应过程中同时测量UV/VIS光谱和质量变化。 Viologen和Prussian Blue的氧化还原证明了该系统的有效性3。修改了STM/AFM-Quartz晶体微平衡系统。STM和AFM系统，以便可以在STM/AFM成像期间同时记录QCM的频率。 STM/AFM图像和频率图像之间的比较表明，尖端 - 底物相互作用会导致压力，从而导致频率变化。