Determination of force constant and refractive index of a semiconducting polymer composite using UV/visible spectroscopy: a new approach

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• 作者：Thejas G. Urs ; G. K. Gowtham ; M. B. Nandaprakash…
• 关键词：Polymer composites ; Refractive index ; Force constant ; UV/visible spectroscopy
• 刊名：Indian Journal of Physics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：91
• 期：1
• 页码：53-56
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics, general; Astrophysics and Astroparticles;
• 出版者：Springer India
• ISSN：0974-9845
• 卷排序：91

文摘

A model to determine refractive index and the intermolecular force constant in a polymeric chain is presented in this study. We have used the UV/visible absorption spectrum of a sample to determine afore mentioned parameters. The exponential absorption wavelength points of the spectrum are used to determine these parameters, on which the optical band gap of the material is defined. This study is carried out for various dopant concentration of a composite, so as to get a comparative insight. This study reveals the dependence of these parameters on dopant concentration and the wavelength.