Date of Completion

11-12-2013

Embargo Period

11-12-2014

Keywords

conjugated polymer, electrochromism, band-gap, diffusion, metal-insulator transition

Major Advisor

Gregory A. Sotzing

Associate Advisor

Menka Jain

Associate Advisor

Ramamurthy Ramprasad

Field of Study

Physics

Degree

Doctor of Philosophy

Open Access

Open Access

Abstract

First, the effect of monomer feed ratios when two electroactive monomers diffuse towards each other as a means of modulating the band gap by creating different copolymers is presented. From two homopolymers, having a high and low energy band gap, a set of conjugated copolymers with different energy bang gaps were prepared in a single run using diffusion fundamentals. . Hence, a combination of the two monomers is used to generate solid state electrochromic devices of any color.

Second, the preparation and characterization of conductive fabric using a conjugated polymer is introduced. The electrical properties, morphology, and the effect of temperature on conductive fabric resistance over a wide range of temperature were investigated. It was found that the conductive fabric had low sheet resistance with passage of high current. The material exhibited metallic behavior at a specific temperature due to the modulation in the band gap from the semiconductor to metal range

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