Polyaromatic Cores for Enhanced Conductivity in Inherently Conductive Polymers (ICPs)

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dc.contributor.advisorIrvin, Jennifer
dc.contributor.authorWang, Xu
dc.contributor.committeeMemberBeall, Gary
dc.contributor.committeeMemberKornienko, Alexander
dc.date.accessioned2018-09-19T15:47:51Z
dc.date.available2018-09-19T15:47:51Z
dc.date.issued2017-08
dc.description.abstractThe discovery of Inherently Conductive Polymers (ICPs), also known as “synthetic metals”, is an attracting class of materials as a promising alternative for metallic semiconductors and conductors, which combine the positive properties of metals and conventional polymers with ease of synthesis and flexible processing techniques. These polymers are useful for energy storage, electrochromics, corrosion protection, thermoelectric materials, chemical and biomedical sensors, and so on. Despite the excellent electrical conductivity along the length of each conjugated chain of ICPs, the electron hopping required for conduction from chain to chain results in series resistance. The hypothesis of this thesis is that the electron hopping can be minimized by providing alternative conjugated pathways in the ICPs using a variety of polyaromatic cores. Starting from a model compound, a tetrafunctionalized pyrene novel monomer was designed and synthesized using a pyrene core coupled with 3,4-ethylenedioxythiophene (EDOT) via vinylene linkages using the Horner-Wadsworth-Emmons (HWE) reaction. Characterizations confirmed the monomer, from which several polymers were prepared via both oxidative chemical polymerization and electropolymerization. The conductivity of the resulting polymers was investigated using four-point collinear probe. The same technique can be applied to generate graphene-based hyperbranched ICPs. The functionalized graphene hub with aldehyde groups on the edges (graphenal) can be coupled with EDOT to yield a hyperfunctionalized monomer that can be polymerized to form a highly conjugated network with enhanced conductivity.
dc.description.departmentChemistry and Biochemistry
dc.formatText
dc.format.extent97 pages
dc.format.medium1 file (.pdf)
dc.identifier.citationWang, X. (2017). <i>Polyaromatic cores for enhanced conductivity in Inherently Conductive Polymers (ICPs)</i> (Unpublished thesis). Texas State University, San Marcos, Texas.
dc.identifier.urihttps://hdl.handle.net/10877/7724
dc.language.isoen
dc.subjectConductive polymers
dc.subjectPolyaromatic cores
dc.subject3,4-ethylenedioxythiophene
dc.subjectPyrene
dc.subjectFunctionalized graphene
dc.subject.lcshSurface chemistryen_US
dc.subject.lcshConducting polymersen_US
dc.titlePolyaromatic Cores for Enhanced Conductivity in Inherently Conductive Polymers (ICPs)
dc.typeThesis
thesis.degree.departmentChemistry and Biochemistry
thesis.degree.disciplineChemistry
thesis.degree.grantorTexas State University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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