Patterned polyfluorene surfaces by functionalization of nanoimprinted polymeric features

Langmuir : the ACS Journal of Surfaces and Colloids
Matthias BeinhoffKenneth R Carter

Abstract

A new procedure is described for surface grafting polymer brushes by step-growth polymerization from initiator-embedded polymeric thin films and micron- and nanometer-scale patterns. An imprint lithographic process, nanocontact molding, was used to prepare thin patterned cross-linked polyacrylate network films on silicon wafers that incorporated 4-bromostyrene in the networks. These networks present reactive 4-bromophenyl functionality at the surface that act as attachment sites for the subsequent Ni(0)- mediated step-growth condensation polymerization of 2,7-dibromo-9,9-dihexylfluorene The step-growth polymerization medium consisted of 2,7-dibromo-9,9-dihexylfluorene, Ni(0)-catalyst, and bipyridine in a toluene/dimethylformamide solvent mixture. The resulting growth of polydihexylfluorene brushes from the patterned surface was monitored by contact angle, optical spectrometry, surface profilometry and AFM. Brush growth was conducted from patterned features ranging from 100 microm to 100 nm in width and 50 nm in height. The optical and fluorescence behavior of the polyfluorene brushes was similar to that of thin polyfluorene films made by spin coating.

References

Mar 27, 2003·Journal of the American Chemical Society·Timothy A von WerneKenneth R Carter
Jan 23, 2004·Chemical Society Reviews·Steve EdmondsonWilhelm T S Huck

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Citations

Jun 9, 2009·Chemical Communications : Chem Comm·S Kyle SontagJason Locklin
Mar 15, 2011·Chemical Communications : Chem Comm·Nicholas MarshallJason Locklin
Sep 29, 2012·Beilstein Journal of Organic Chemistry·Aurica FarcasValeria Harabagiu
Sep 25, 2015·Soft Matter·Siddhartha DasRabibrata Mukherjee
Mar 6, 2009·Angewandte Chemie·Tetyana BeryozkinaAnton Kiriy
Jan 25, 2007·Small·Ursula SchmelmerRainer Jordan
Jun 17, 2010·Advanced Materials·Yuval OfirVincent M Rotello
Jul 30, 2011·Macromolecular Rapid Communications·Anton KiriyMichael Sommer
Jan 19, 2010·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Tarik MatrabFrédéric Kanoufi
Dec 23, 2006·Physical Chemistry Chemical Physics : PCCP·Michael Woodson, Jie Liu
Aug 15, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Anandi RoyJason Locklin
Sep 2, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Sarav B JhaveriKenneth R Carter
Jun 15, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Sarav B Jhaveri, Kenneth R Carter
Jan 20, 2021·ACS Biomaterials Science & Engineering·Munusamy KrishnamurthyDebasis Samanta
Apr 13, 2007·Chemical Reviews·Etienne MenardJohn A Rogers
Jan 25, 2007·Nano Letters·Erik C HagbergKenneth R Carter
Mar 9, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Katsu OgawaKirk S Schanze

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