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Poly (N-isopropylacrylamide) microgel-based etalons and etalon arrays for determining the molecular weight of polymers in solution

  • Author(s) / Creator(s)
  • Positively and/or negatively charged poly (N-isopropylacrylamide)-based microgels were deposited on a single substrate and isolated regions of Au overlayers were deposited on top of the microgels. Each spatially isolated Au overlayer region had a different thickness to make an etalon array. We found that areas with a thin Au overlayer (5 nm) responded to a range of polymer molecular weights (MW), while areas with a thick overlayer (35 nm) can only respond to low molecular weight polyelectrolytes. By comparing the optical responses of the device's individual array elements, a good approximation of the polyelectrolyte MW in solution can be made.

  • Date created
    2013
  • Subjects / Keywords
  • Type of Item
    Article (Published)
  • DOI
    https://doi.org/10.7939/R3PV6BM43
  • License
    Attribution 4.0 International
  • Language
  • Citation for previous publication
    • Islam, M., and Serpe, M. (2013). Poly (N-isopropylacrylamide) microgel-based etalons and etalon arrays for determining the molecular weight of polymers in solution. APL Materials, 1(5), 052108 [8 pages].
  • Link to related item
    http://dx.doi.org/10.1063/1.4829975