Reversible closslinks

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Presentation transcript:

Reversible closslinks Supramolecular Architecture for Improved Processibility and Performance: Implications for Self-Healing and Alternate Energy Timothy E. Long and Shijing Cheng , Department of Chemistry, Macromolecules and Interfaces Institute, Virginia Tech, Blacksburg, VA 24061 Novel Supramolecular Polymers: Novel compositions are proposed that contain phosphonium cations and nucleic acid building blocks using simple derivatizations of petroleum based monomers. These monomers provide branched and linear block copolymers wherein the intermolecular interactions enable self-healing and hydroxide anion transport in alkaline fuel cells. Tailored intermolecular interactions, including novel cationic polyelectrolytes and nucleobase hydrogen bonding, will dramatically influence the performance of smart or self-healing coatings and the transport of anions in alkaline fuel cell membranes for alternate energy technologies. Our research program also identified a new family of ion-containing polymers that combined nucleobase hydrogen bonding and associated pendant organic cations for the formation of reversible, ion-channeled, macromolecular architectures. A T or Elastomer matrix Reversible closslinks Ionic aggregation observed via Small Angle X-ray Scattering (Bragg space 2.18 nm)