Deposition of zwitterionic polymer brushes in a dense gas medium

Journal of Colloid and Interface Science
Sreenivasa Reddy PunireddM P Srinivasan

Abstract

Poly(sulfobetaine methacrylate) (PSBMA) films known for their resistance to nonspecific protein adsorption, cell/bacterial adhesion and biofilm formation were produced by surface initiated polymerization on a silicon surface via a batch reaction system in CO2 expanded liquid (CO2-EL) medium. Atom transfer radical polymerization (ATRP) was carried out using 2,2'-bipyridyl as ligand and CuBr as a catalyst in water/methanol mixture with trichloro[4-(chloromethyl)phenyl]silane (CMPS) used as the initiating species. The films were grown in the CO2-EL environment at a range of conditions and thickness up to 10nm. In contrast to films produced by conventional solvent systems at atmospheric pressure, the polymer films grown by the CO2-EL process showed uniform thickness and pin-hole free topography. Most importantly, the CO2-EL processed PSBMA films showed no trace of copper (used as the catalyst), thus obviating the need for post-deposition processing and avoiding adverse effects of the metal leaching during service. Finally, PSBMA films from both the conventional and CO2-EL processes were exposed to Human mesenchymal stem cells (hMSCs) and the results showed that, while in both the cases the cell proliferation rate was inhibited by t...Continue Reading

References

Nov 14, 2002·Chemical Reviews·Andrew B Lowe, Charles L McCormick
Aug 11, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Sreenivasa Reddy Puniredd, M P Srinivasan
Oct 19, 2006·Journal of Colloid and Interface Science·Sreenivasa Reddy Puniredd, M P Srinivasan
May 24, 2008·Chemical Society Reviews·Tomislav Pintauer, Krzysztof Matyjaszewski
Feb 3, 2009·Journal of Colloid and Interface Science·Sreenivasa Reddy PunireddM P Srinivasan
Aug 20, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Zheng ZhangShaoyi Jiang
Aug 14, 2010·Colloids and Surfaces. B, Biointerfaces·Yuuki Inoue, Kazuhiko Ishihara
May 3, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Zaki G EstephanJoseph B Schlenoff
Apr 18, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Jinghao Kuang, Phillip B Messersmith
Jul 24, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Robert QuintanaG Julius Vancso
May 2, 2013·The Journal of Physical Chemistry Letters·Sreenivasa Reddy PunireddM P Srinivasan

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Citations

May 30, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Vickramjeet SinghHeng-Kwong Tsao
May 8, 2020·ACS Applied Materials & Interfaces·Xin SuLei Jiang

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