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Title: Barnacle cement as surface anchor for "clicking" of antifouling and antimicrobial polymer brushes on stainless steel
Authors: Yang, W.J.
Cai, T.
Neoh, K.-G. 
Kang, E.-T. 
Teo, S.L.-M. 
Rittschof, D.
Issue Date: 10-Jun-2013
Citation: Yang, W.J., Cai, T., Neoh, K.-G., Kang, E.-T., Teo, S.L.-M., Rittschof, D. (2013-06-10). Barnacle cement as surface anchor for "clicking" of antifouling and antimicrobial polymer brushes on stainless steel. Biomacromolecules 14 (6) : 2041-2051. ScholarBank@NUS Repository.
Abstract: Barnacle cement (BC) was utilized 'beneficially' as a surface anchor on stainless steel (SS) for coupling of functional polymer brushes via "click" reactions in both "grafting-to" and "grafting-from" processes. Ethylene sulfide (ES), propargyl carbonylimidazole (PPC) and azidoethyl carbonylimidazole (AEC) reacted with amine and/or hydroxyl groups in BC to introduce the corresponding thiol, alkyne, and azide groups on SS surfaces (SS-thiol, SS-alkyne, and SS-azide, respectively). Antifouling zwitterionic SS-PMPC surface was prepared by thiol-ene photopolymerization of 2-methacryloyloxyethyl phosphorylcholine (MPC) from the SS-thiol surface. Protein-resistant SS-PPEGMA and protein-adsorbing SS-PPFS surfaces were prepared by coupling of the respective azide-functionalized poly(poly(ethylene glycol)methyl ether methacrylate) (azido-PPEGMA) and poly(2,3,4,5,6-pentafluorostyrene) (azido-PPFS) polymer brushes in azide-alkyne "click" reaction. Antifouling alkyne-functionalized poly(N-hydroxyethyl acrylamide) (alkynyl-PHEAA) and antibacterial alkyne-functionalized poly(2-(methacryloyloxy)ethyl trimethylammonium chloride) (alkynyl-PMETA) polymer brushes were clicked on the SS-azide surface. Adsorption of bovine serum albumin and bacteria fouling of Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus epidermidis (S. epidermidis) were investigated on the polymer-functionalized SS surfaces. The versatile bioanchor and functional polymer brush coatings are stable in an abiotic aqueous environment for over a month. © 2013 American Chemical Society.
Source Title: Biomacromolecules
ISSN: 15257797
DOI: 10.1021/bm400382e
Appears in Collections:Staff Publications

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