Journalartikel

Jahr der Veröffentlichung: 2003

Seiten: 5626-5627

Zeitschrift: Journal of the American Chemical Society

Bandnummer: 125

Heftnummer: 19

ISSN: 0002-7863

DOI Link: https://doi.org/10.1021/ja0342648

Verlag: American Chemical Society

Abstract: 
Thermoresponsive nanocomposite thin films composed of alternating layers of silica and polymerized N-isopropylacrylamide (NIPAM) or NIPAM plus dodecyl methacrylate (DM) hydrogels were prepared by surfactant-directed evaporation-induced self-assembly (EISA). During EISA, the organic monomers partition within the hydrophobic domains of a lamellar mesophase. In-situ polymerization via a free radical process results in a 1-2 nm thick hydrogel phase sandwiched between layers of silica oriented parallel to the substrate surface. The thermoresponsiveness of PNIPAM is preserved in this confined environment, and the polymeric layers reversibly swell and deswell by a factor of 2 in water upon temperature changes around the transition temperature of PNIPAM (32 degrees C). The composition, mesostructure, and environmental response were studied by detailed NMR, TGA, and SAXS analyses.

Harvard-Zitierstil: Garnweitner, G., Smarsly, B., Assink, R., Ruland, W., Bond, E. and Brinker, C. (2003) Self-assembly of an environmentally responsive polymer/silica nanocomposite, Journal of the American Chemical Society, 125(19), pp. 5626-5627. https://doi.org/10.1021/ja0342648

APA-Zitierstil: Garnweitner, G., Smarsly, B., Assink, R., Ruland, W., Bond, E., & Brinker, C. (2003). Self-assembly of an environmentally responsive polymer/silica nanocomposite. Journal of the American Chemical Society. 125(19), 5626-5627. https://doi.org/10.1021/ja0342648