Session L42: Dillon Medal Symposium

2:30 PM–5:30 PM, Tuesday, March 22, 2011
Room: A302/303

Sponsoring Unit: DPOLY
Chair: Spiros Anastasiadis, IESL- FORTH

Abstract ID: BAPS.2011.MAR.L42.11

Abstract: L42.00011 : Assembly of conjugated-polymer-based nanostructures driven by solution-state crystallization

4:54 PM–5:06 PM

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Authors:

  Ryan Hayward
    (University of Massachusetts Amherst)

  Felicia Bokel
    (University of Massachusetts Amherst)

  Eunji Lee
    (University of Massachusetts Amherst)

  Brent Hammer
    (University of Massachusetts Amherst)

  P.K. Sudeep
    (University of Massachusetts Amherst)

  Emily Pentzer
    (University of Massachusetts Amherst)

  Todd Emrick
    (University of Massachusetts Amherst)

Conjugated polymers such as regioregular poly(3-alkyl thiophenes), are well known to crystallize into extended one-dimensional nanowires or fibrils. This behavior is not only important for the efficiency of charge transport in device layers, but can also provide a driving force to assemble different optoelectronic components into well- defined nanostructures. We have investigated the assembly of two systems that rely on solution-state crystallization of poly(3-hexyl thiophene) (P3HT). In the first case, co- crystallization of freely dissolved and particle-bound P3HT provides hybrid fibrils of polymers flanked with n-type inorganic nanoparticles. In the second case, crystallization of P3HT-poly(3-triethylene glycol thiophene) diblock copolymers yields fibrils that can form supramolecular helical assemblies in the presence of salt. We seek to elucidate the mechanisms of self-assembly and the optoelectronic properties of the resulting nanostructures.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.L42.11