Sequence-Controlled Polymerization on Facially Amphiphilic Templates at Interfaces
Technical Report,15 Jun 2015,14 Mar 2016
Rensselaer Polytechnic Institute Troy United States
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The central goal of our research program is to exert unprecedented control over macroscopic properties in polymeric materials by tuning their structure at the molecular level. We aim to create new synthetic methods for precision control of copolymer sequence, a goal which has been called the Holy Grail of polymer science. One strategy involves a macromolecular template that is programmed to direct sequence controlled chain growth polymerization. We will synthesize a -conjugated parent polymer by iterative exponential growth IEG, attach cyclic olefin daughter monomers, and then polymerize the daughter monomers via ring-opening metathesis polymerization. This method is intended to transfer sequence information from a copolymer made by stepwise methods to an olefin copolymer for which no stepwise synthesis exists. Dynamic covalent bonding of daughter monomers to parent chain enables facile detachment of the daughter polymer, regeneration of the template, and re-attachment of a subsequent batch of monomer. Hence, a continuous process can produce a stream of daughter polymer product from a small amount of the labor-intensive parent polymer. Control of sequence in synthetic polymers is expected to enable unprecedented control of polymer properties for a broad range of technologies of interest to the Army Research Office.
- Polymer Chemistry