Georgia Journal of Science

Article Title

Linear Dichroism in the Undergraduate Physical Chemistry Lab**


Stretched polymer films are used in the physical chemistry laboratory to introduce the general concept of anisotropy and the specific concept of transition dipole orientation. Polymer films are prepared and stretched to various degrees to achieve partially oriented systems. Some films are prepared with embedded smaller conjugated molecules for analysis. The technique of linear dichroism is used to analyze the stretched films to determine parameters such as the degree of orientation of the system and transition dipole vector directions of major absorbance peaks. The experimental results are compared to computational results obtained from the SPARTAN modeling program.


Valdosta State University Chemistry Department

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