Free-standing poly (N-isopropylacrylamide) microgel-based etalons

  • Author(s) / Creator(s)
  • Poly (N-isopropylacrylamide-co-acrylic acid) (pNIPAm-co-AAc) microgel-based free-standing etalons have been developed by fabricating etalons on a solid support that has been coated with a sacrificial polymer layer. Therefore, the etalon could be easily removed from the solid substrate upon dissolution of the sacrificial layer. We show that the free-standing etalons retain the optical properties, and the temperature/pH responsivity, of the etalon before its removal from the solid substrate. Furthermore, we show that the free-standing etalons could be transferred to a variety of different substrates, with different chemistries and shapes. We go on to show that the free-standing etalons could be loaded with a small molecule model drug Crystal Violet (CV), transferred to a hydrogel, and triggered to release the CV in a pH-dependent fashion. In the future, these novel free-standing films can be used for sensing, as transferable optical materials, and will be further developed into drug delivery platforms.

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    Article (Published)
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    © The Royal Society of Chemistry 2014. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
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  • Citation for previous publication
    • Gao, Y., Xu, W., and Serpe, M. (2014). Free-standing poly (N-isopropylacrylamide) microgel-based etalons. Journal of Materials Chemistry C, 2(29), 5878-5884.
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