Pi-conjugated polymers are used in many applications including field-effect transistors, light-emitting diodes, photovoltaics, and batteries. Pendant solubilizing chains on pi-conjugated polymers are widely used to control polymer solubility, polymer assembly, and glass transition temperature; hence, are useful to control optical, charge transport, and mechanical properties of polymer thinfilms. However, the pendant solubilizing chains do not provide control over pi-pi stacking interactions, which is useful to control charge transport in thinfilms and charge transfer interactions with acceptors. Also, control over the pi-pi stacking interactions will help to design dispersible 2D-pi-conjguated polymers. In this talk, I will discuss a new design strategy that we developed to generate soluble pi-conjugated polymers without pendant solubilizing chains. The developed bifacial cyclophane monomers resulted in soluble pi-conjugated polymers without pendant solubilizing chains. The bifacial cyclophane monomer height provided control over polymer solubility. The pi-face of the bifacial cyclophanes is insulated due to cycloalkyl groups, which would hinder the interpolymer interactions. To control the interpolymer charge transport, electronically communicating monomers are incorporated along the polymer backbone. The impact of the electronically communicating monomers on polymer solubility and optical properties will be discussed.

Control over pi-surface conductivity in pi-conjugated polymers

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.