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Pappas HC, Phan S, Yoon S, Edens LE, Meng X, Schanze KS, Whitten DG, Keller DJ. Self-Sterilizing, Self-Cleaning Mixed Polymeric Multifunctional Antimicrobial Surfaces. ACS APPLIED MATERIALS & INTERFACES 2015; 7:27632-8. [PMID: 26596644 DOI: 10.1021/acsami.5b06852] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Mitigation of bacterial adhesion and subsequent biofilm formation is quickly becoming a strategy for the prevention of hospital-acquired infections. We demonstrate a basic strategy for surface modification that combines the ability to control attachment by microbes with the ability to inactivate microbes. The surface consists of two active materials: poly(p-phenylene ethynylene)-based polymers, which can inactivate a wide range of microbes and pathogens, and poly(N-isopropylacrylamide)-based polymers, which can switch between an hydrophobic "capture" state and a hydrophilic "release" state. The combination of these materials creates a surface that can both bind microbes in a switchable way and kill surface-bound microbes efficiently. Considerable earlier work with cationic poly(p-phenylene ethynylene) polyelectrolytes has demonstrated and characterized their antimicrobial properties, including the ability to efficiently destroy or deactivate Gram-negative and Gram-positive bacteria, fungi, and viruses. Similarly, much work has shown (1) that surface-polymerized films of poly(N-isopropylacrylamide) are able to switch their surface thermodynamic properties from a swollen, relatively hydrophilic state at low temperature to a condensed, relatively hydrophobic state at higher temperature, and (2) that this switch can control the binding and/or release of microbes to poly(N-isopropylacrylamide) surfaces. The active surfaces described herein were fabricated by first creating a film of biocidal poly(p-phenylene ethynylene) using layer-by-layer methods, and then conferring switchable adhesion by growing poly(N-isopropylacrylamide) through the poly(p-phenylene ethynylene) layer, using surface-attached polymerization initiators. The resulting multifunctional, complex films were then characterized both physically and functionally. We demonstrate that such films kill and subsequently induce widespread release of Gram-negative and Gram-positive bacteria.
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Affiliation(s)
- Harry C Pappas
- Department of Nanoscience and Microsystems Engineering, University of New Mexico , Albuquerque, New Mexico 87131-1341, United States
- Center for Biomedical Engineering, Department of Chemical and Biological Engineering, University of New Mexico , Albuquerque, New Mexico 87131-1341, United States
| | - Samantha Phan
- Department of Chemistry, University of Florida , Gainesville, Florida 32611, United States
| | - Suhyun Yoon
- Department of Chemistry, University of New Mexico , Albuquerque, New Mexico 87131-1341, United States
| | - Lance E Edens
- Department of Chemistry, University of New Mexico , Albuquerque, New Mexico 87131-1341, United States
| | - Xiangli Meng
- Department of Chemistry, University of Florida , Gainesville, Florida 32611, United States
| | - Kirk S Schanze
- Department of Chemistry, University of Florida , Gainesville, Florida 32611, United States
| | - David G Whitten
- Center for Biomedical Engineering, Department of Chemical and Biological Engineering, University of New Mexico , Albuquerque, New Mexico 87131-1341, United States
| | - David J Keller
- Department of Chemistry, University of New Mexico , Albuquerque, New Mexico 87131-1341, United States
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Schneider K, Nitsche D, Stamm M. Deformation and relaxation of grafted polymer layers at elevated temperatures. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3549-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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A theoretical investigation on the pH-induced switching of mixed polyelectrolyte brushes. CHINESE JOURNAL OF POLYMER SCIENCE 2014. [DOI: 10.1007/s10118-014-1429-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Wang ZL, Xu JT, Du BY, Fan ZQ. Preparation and characterization of V-shaped PS-b-PEO brushes anchored on planar gold substrate through the trithiocarbonate junction group. J Colloid Interface Sci 2012; 384:29-37. [DOI: 10.1016/j.jcis.2012.06.067] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 06/15/2012] [Accepted: 06/18/2012] [Indexed: 11/29/2022]
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Borozenko O, Godin R, Lau KL, Mah W, Cosa G, Skene WG, Giasson S. Monitoring in Real-Time the Degrafting of Covalently Attached Fluorescent Polymer Brushes Grafted to Silica Substrates—Effects of pH and Salt. Macromolecules 2011. [DOI: 10.1021/ma2013755] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Olga Borozenko
- Department of Chemistry Université de Montréal, C.P. 6128, succursale Centre-Ville, Montréal, QC, Canada, H3C 3J7
| | - Robert Godin
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC, Canada, H3A 2K6
| | - Kai Lin Lau
- Department of Chemistry Université de Montréal, C.P. 6128, succursale Centre-Ville, Montréal, QC, Canada, H3C 3J7
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC, Canada, H3A 2K6
| | - Wayne Mah
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC, Canada, H3A 2K6
| | - Gonzalo Cosa
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC, Canada, H3A 2K6
| | - W. G. Skene
- Department of Chemistry Université de Montréal, C.P. 6128, succursale Centre-Ville, Montréal, QC, Canada, H3C 3J7
| | - Suzanne Giasson
- Department of Chemistry Université de Montréal, C.P. 6128, succursale Centre-Ville, Montréal, QC, Canada, H3C 3J7
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Entropic Effects on the Mechanical Behavior of Dry Polymer Brushes During Nanoindentation by Atomic Force Microscopy. Macromolecules 2010. [DOI: 10.1021/ma102032t] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lego B, Skene WG, Giasson S. Swelling Study of Responsive Polyelectrolyte Brushes Grafted from Mica Substrates: Effect of pH, Salt, and Grafting Density. Macromolecules 2010. [DOI: 10.1021/ma902588j] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Suzanne Giasson
- Department of Chemistry
- Faculty of Pharmacy, Centre for Self-Assembled Chemical Structures
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