Chemical Analysis Using Scanning Force Microscopy. An Undergraduate Laboratory Experiment
Chemical Analysis Using Scanning Force Microscopy. An Undergraduate Laboratory Experiment
复制标题
使用扫描力显微镜进行化学分析。
DOI：
10.1021/ed079p207
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发表时间：
2002
影响因子：
3
通讯作者：
C. Zhong
中科院分区：
文献类型：
--
作者：
M. Maye;Jin Luo;Li Han;C. Zhong
这项本科实验室实验使用扫描力显微镜在化学设计的表面进行化学分析。它包括在自组装的单分子膜上测量侧向力，以提供化学测绘能力。采用微接触印刷法在金衬底上制备了不同官能团的单层图案。简单的样品制备和相对容易的显微镜操作使学生在分子组装、图像采集和数据解释方面获得了实践经验。从针尖-样品相互作用力和图案化单分子膜的表面化学成分的角度对图像进行了分析和讨论。本实验帮助学生掌握基于原子和分子水平上的化学相互作用的分析概念。
This undergraduate laboratory experiment uses scanning force microscopy to perform chemical analysis at chemically designed surfaces. It involves lateral force measurements at self-assembled monolayers to provide chemical mapping capability. Monolayer patterns with different functional groups were prepared on gold substrates using a micro-contact printing method. The simplicity of the sample preparation and the relative ease of the microscope operation allowed students to gain hands-on experience in molecular assembling, image acquisition, and data interpretation. The images were analyzed and discussed in terms of tip-sample interaction forces and surface chemical composition of the patterned monolayers. This experiment helps students to grasp analytical concepts based on chemical interactions at atomic and molecular levels.