Selective Immobilization of Protein Clusters on Polymeric Nanocraters

Andrea Valsesia, Pascal Colpo, Tarik Meziani, Frederic Bretagnol, Michael Lejeune, François Rossi, Anita Bouma, M.F. Garcia Parajo

Research output: Contribution to journalArticleAcademic

40 Citations (Scopus)

Abstract

A method for fabricating chemically nanopatterned surfaces based on a combination of colloidal lithography and plasma- enhanced chemical vapor deposition (PECVD) is presented. This method can be applied for the creation of different nanopatterns, and it is in principle not limited in patterning resolution. Nanocraters of poly(acrylic acid) (carboxylic moieties) surrounded by a matrix of poly(ethylene glycol) are fabricated. Chemical force microscopy demonstrates that the process is able to produce the expected surface chemical contrast. Finally, the carboxylic groups of the craters are activated in order to induce the covalent binding of fluorescent-labeled proteins. Fluorescence investigation using scanning confocal microscopy shows that the proteins are preferentially attached inside the functional craters.
Original languageUndefined
Pages (from-to)1242-1246
JournalAdvanced functional materials
Volume16
Issue number9
DOIs
Publication statusPublished - 2006

Keywords

  • Biosensors
  • Lithography
  • Nanopatterning
  • colloidal
  • Surface functionalization
  • IR-72164

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