We demonstrate the use of electric field induced nanolithography (FINL) to pattern a range of smart polymer brush surfaces: poly(acrylic acid) (PAA), poly(N-isopropylacrylamide) (PNIPAAm), poly(sulfobetaine methacrylate) (PSBMA), and poly(oligo(ethylene glycol) methyl methacrylate) (POEGMA). Our results show that FINL provides a powerful patterning technique that results in the localized topographical and chemical modification of the polymer brush surface only. The resulting chemical modification allows selective addressing of the brush surface with aldehyde reactive coupling chemistries. Furthermore we demonstrate field-induced patterninig of surface charge onto ferroelectric thin films (FETFs). We show that FETFs have great potential for biological and interfacial sensing applications in aqueous environemnts. Specifically, we show that FETF surface charge patterns can be used to control the lateral extent of electric double layer formation in dilute electrolyte solutions, with clear implications for field assisted particle deposition and programmed self assembly.

Programming smart macromolecular and ferroelectric surfaces for (bio)sensing applications

245th National Meeting (2013)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.