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Thin films for controlled cell growth

  • US 9,228,169 B2
  • Filed: 06/16/2015
  • Issued: 01/05/2016
  • Est. Priority Date: 05/17/2004
  • Status: Expired due to Fees
First Claim
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1. A method for controlling the attachment and growth of cells on a surface of an article, the method comprising contacting the article with living tissue, living organisms, or with water in an aqueous system comprising living organisms wherein the article comprises a substratum having a surface and a film on the surface, the film comprising a network of a net positively charged composition and a net negatively charged composition, wherein the net positively charged composition comprises a net positively charged polyelectrolyte or the net negatively charged composition comprises a net negatively charged polyelectrolyte, a net positively charged polyelectrolyte or the net negatively charged polyelectrolyte contains (i) a polymer repeat unit having at least two fluorine atoms, or (ii) a polymer repeat unit having a zwitterion group, and the film comprises a surface region at which a net positively charged polyelectrolyte having zwitterion repeat units, a net negatively charged polyelectrolyte having zwitterion repeat units, a net positively charged polyelectrolyte comprising a repeat unit having at least two fluorine atoms, or a net negatively charged polyelectrolyte comprising a repeat unit having at least two fluorine atoms is exposed.

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