Synthesis of novel conjugated polymers and copolymers

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Last Modified
  • March 21, 2019
Creator
  • Cottle, Matthew Robert
    • Affiliation: College of Arts and Sciences, Department of Chemistry
Abstract
  • Conjugated polymers have found many uses as high-strength materials in the automotive and aerospace industries as well as the active components in thin film transistors, light emitting diodes and solar cell devices. There are few pathways to the synthesis of soluble conjugated polymers and side reactions or stringent polymerization conditions are prevalent in many of them. This work describes the synthesis of several conjugated polymers via Ni(0)-catalyzed coupling or Stille coupling. First, poly(2,5-benzophenone) macroinitiators are synthesized via Ni(0)-catalyzed coupling and incorporated, as the middle block, into coil-rod-coil triblock copolymers with poly(lactide). The study of the effects of ligand type, solvent type, reaction temperature, and reaction time in the Ni(0)-catalyzed coupling of 2-benzenesulfonyl-1,4-dichlorobenzene are then presented. Next, the synthesis of poly(paraphenylene) containing a thermally removable solubilizing group is shown. The optical bandgap was shown to decrease as the solubilizing group undergoes two thermolysis steps to afford native poly(paraphenylene). Furthering this work, alternating donor-acceptor polymers are synthesized via Stille coupling that also contain thermally removable solubilizing groups. These materials are characterized by NMR, GPC, DSC, TGA, and UVvis.
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  • In Copyright
Advisor
  • Ashby, Valerie
Degree granting institution
  • University of North Carolina at Chapel Hill
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  • Open access
Date uploaded
  • October 11, 2010

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