Introduction of Surface Chemistry Using Fourier-Transform Infrared Spectroscopy and Incorporation of FT-IR into Upper Level Undergraduate Laboratories

我们正在开发实验，向学生介绍表面化学和FT-IR作为表面分析工具的实用性。这些实验利用红外反射吸收光谱法探测薄膜与反射金属衬底之间的相互作用。实验工作的重点是研究薄膜厚度、衬底材料的性质及其与频移幅度的关系等参数，以及薄膜的热处理对FT-IR光谱的影响。工业应用，如计算机硬盘和食品或饮料罐上的薄膜涂层，也正在研究中。此外，介绍性实验侧重于FT-IR的基础知识，以促进其在分析，有机和无机实验室中的使用。发表在《化学教育杂志》（Journal of Chemical Education）和其他地方的实验经过评估、发展，以适应当地的需要，并纳入实验室。这些实验是设计本科生研究项目的出发点，这些项目涉及的主题包括环境分析（汽车尾气和空气污染研究）、固体和非挥发性液体的红外光谱、基于傅里叶变换红外光谱的动力学分析方法，以及结合热重分析的傅里叶变换红外反射研究（这一组合对研究聚合物很有用）。

Experiments are being developed to introduce students to surface chemistry and the usefulness of FT-IR as a surface analytical tool. These experiments probe the interaction between thin films and reflective metal substrates using infrared reflection-absorption spectroscopy. The thrust of the experimental work focuses on investigating parameters such as film thickness, nature of the substrate material and its relationship to the magnitude of frequency shifts, and the effect of thermal processing of the films on FT-IR spectra. Industry applications, such as thin film coatings on computer hard disks and on food or beverage cans, are also being studied. In addition, introductory experiments focus on the basics of FT-IR, to facilitate its use in analytical, organic, and inorganic laboratories. Experiments published in the Journal of Chemical Education, and elsewhere, are evaluated, developed to fit local needs, and incorporated into labs. These experiments, serve as takeoff points for designing undergraduate research projects dealing with topics such as environmental analysis (automobile exhaust and air pollution studies), IR spectra of solids and nonvolatile liquids, kinetic methods of analysis based on FT-IR spectra, and FT-IR reflectance studies combined with thermogravimetric analysis (a combination useful for studying polymers).