US-France Cooperative Research: Raman Scattering in Polarized Light in Oriented Conjugated Polymers

该奖项将支持宾夕法尼亚大学化学系Alan MacDiarmid博士和法国南特大学物理晶体实验室Serge Lefant教授之间的合作研究。该项目的目标是利用拉曼散射技术研究导电聚合物的性质。麦克迪尔米德博士和他的研究小组在导电聚合物(即聚苯胺和聚乙炔)的合成和表征方面拥有专业知识。法国实验室在利用共振拉曼散射技术研究导电聚合物方面拥有丰富的经验。研究人员建议将先前的实验扩展到定向样品的偏振光测量。将对取向聚乙炔进行详细的分析，考虑到在不同波长下实验测量的吸收系数和反射系数所引入的修正。法国小组已经证明，这种测量是可行的，初步结果显示了关于实验数据解释的重要后果。这项研究的结果将有助于更好地理解导电聚合物的结构，这是当前材料研究的一个重要课题。

This award will support collaborative research between Dr. Alan MacDiarmid, Department of Chemistry, University of Pennsylvania and Professor Serge Lefrant, Laboratoire de Physique Cristalline, University of Nantes, France. The objective of the project is the investigation of the properties of conductive polymers using the technique of Raman scattering. Dr. MacDiarmid and his research group has expertise in the synthesis and characterization of conducting polymers, namely polyanilines and polyacetylenes. The French laboratory has wide experience in studies of conducting polymers by means of resonance Raman scattering. The investigators propose to extend previous experiments to measurements in polarized light of oriented samples. A detailed analysis will be made of oriented polyacetylene, taking into account the corrections introduced by absorption and reflection coefficients measured experimentally at different wavelengths. The French group has demonstrated that such measurements are feasible and preliminary results have shown important consequences concerning the interpretation of experimental data. Results of the proposed research will lead to a better understanding of the structure of conducting polymer, an important topic in current materials research.