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Olszewski R, Nadolska M, Łapiński M, Prześniak-Welenc M, Cieślik BM, Żelechowska K. Solvent-Free Synthesis of Phosphonic Graphene Derivative and Its Application in Mercury Ions Adsorption. NANOMATERIALS 2019; 9:nano9040485. [PMID: 30934661 PMCID: PMC6523945 DOI: 10.3390/nano9040485] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/19/2019] [Accepted: 03/21/2019] [Indexed: 11/16/2022]
Abstract
Functionalized graphene was efficiently prepared through ball-milling of graphite in the presence of dry ice. In this way, oxygen functional groups were introduced into material. The material was further chemically functionalized to produce graphene derivative with phosphonic groups. The obtained materials were characterized by spectroscopic and microscopic methods, along with thermogravimetric analysis. The newly developed material was used as an efficient mercury adsorbent, showing high adsorption efficiency. The adsorption isotherms were fitted using Freundlich and Langmuir models. The adsorption kinetics were fitted with pseudo-first order and pseudo-second order models. Adsorption selectivity was determined in the presence of cadmium ions and nickel ions. The presence of mentioned bivalent ions in the solution did not affect mercury adsorption efficiency.
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Affiliation(s)
- Robert Olszewski
- Department of Solid State Physics, Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland.
| | - Małgorzata Nadolska
- Department of Solid State Physics, Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland.
| | - Marcin Łapiński
- Department of Solid State Physics, Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland.
| | - Marta Prześniak-Welenc
- Department of Solid State Physics, Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland.
| | - Bartłomiej Michał Cieślik
- Faculty of Chemistry, Department of Analytical Chemistry, Gdansk University of Technology, Narutowicza St. 11/12, 80-233 Gdansk, Poland.
| | - Kamila Żelechowska
- Department of Solid State Physics, Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland.
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Chng S, Moloney MG, Wu LYL. Photochromic Materials by Postpolymerisation Surface Modification. ACS OMEGA 2018; 3:15554-15565. [PMID: 31458211 PMCID: PMC6644173 DOI: 10.1021/acsomega.8b02521] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 10/29/2018] [Indexed: 06/09/2023]
Abstract
Photochromic materials are available by a postpolymerization surface modification of diverse polymers in a multistep sequential process mediated, first, by carbene insertion chemistry, second, by diazonium coupling with a tethered precursor, and finally by coupling to a spiropyran. This three-step sequence is efficient, and surface loading densities of 1013 molecules cm-2 are typically achievable, leading to materials with observable photochromic and wettability behavior, which operate over multiple cycles without significant photobleaching or loss of efficacy. Materials suitable for application in this process include both reactive, but also lower surface energy polymers. Although the process is particularly efficient for high surface area materials, surface modification onto lower surface area substrates, while being intrinsically less efficient, is nonetheless sufficiently effective that changes in macroscopic photochromic properties are readily observable.
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Affiliation(s)
- Shuyun Chng
- Department
of Chemistry, Chemistry Research Laboratory, The University of Oxford, 12-Mansfield Road, Oxford OX1 3TA, United Kingdom
- Singapore
Institute of Manufacturing Technology, 2 Fusionopolis Way, #08-04, Innovis, Singapore 138634
| | - Mark G. Moloney
- Department
of Chemistry, Chemistry Research Laboratory, The University of Oxford, 12-Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Linda Y. L. Wu
- Singapore
Institute of Manufacturing Technology, 2 Fusionopolis Way, #08-04, Innovis, Singapore 138634
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Yu X, Wang L, Yang P, Xu J, Moloney MG, Liu L, Pan Y, Wang Y. Preparation, Post-Modification, and Antibacterial Application of Gelatin Electrospun Membranes. Macromol Biosci 2018; 18:e1800093. [PMID: 29923363 DOI: 10.1002/mabi.201800093] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 04/27/2018] [Indexed: 01/15/2023]
Abstract
Two bis(diaryldiazomethane)s substituted with amino groups are synthesized and used for the surface modification of membranes electrospun from gelatin. These membranes are then reacted with tolylene-2,4-diisocyanate to give urea-functionalized materials, so that hydrogen peroxide can be reversibly bound onto their surface. These membranes are characterized by scanning electron microscopy, XPS, differential scanning calorimeter, and tensile test to show their surface properties and bulk properties. The surface modification with amino-substituted diazomethanes and the subsequent cross-linking reaction with diisocyanates contribute to high loadings of hydrogen peroxide, and greatly increase the antibacterial activity of gelatin-derived membranes, which open a new horizon in the preparation of high loading antiseptic/antibacterial biomacromolecular surfaces and interfaces.
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Affiliation(s)
- Xi Yu
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, P. R. China
| | - Pengfei Yang
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
| | - Jinku Xu
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
| | - Mark G Moloney
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - Lian Liu
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
| | - Yunlin Pan
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
| | - Yongqing Wang
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
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Yang P, Moloney MG. Surface modification using crosslinking of diamine and a bis(diarylcarbene): synthesis, characterization, and antibacterial activity via binding hydrogen peroxide. RSC Adv 2017. [DOI: 10.1039/c7ra05258h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Modification of polymer beads with a functionalized bis(arylcarbene) provides access to materials with biocidal properties.
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Affiliation(s)
- Pengfei Yang
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- UK
- School of Chemistry and Pharmaceutical Engineering
| | - Mark G. Moloney
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- UK
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Shepherd C, Hadzifejzovic E, Shkal F, Jurkschat K, Moghal J, Parker EM, Sawangphruk M, Slocombe DR, Foord JS, Moloney MG. New Routes to Functionalize Carbon Black for Polypropylene Nanocomposites. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:7917-7928. [PMID: 27417277 DOI: 10.1021/acs.langmuir.6b02013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Methods for chemical surface functionalization for carbon black (CB) nanoparticles were studied to produce (CB)/polypropylene (PP) nanocomposites with superior electrical and thermal properties. Nanoparticle dispersion is known to directly control the extent to which nanocomposites maximize the unique attributes of their nanoscale fillers. As a result, tailored nanoparticle surface chemistry is a widely utilized method to enhance the interfacial interactions between nanoparticles and polymer matrices, assisting improved filler dispersion. In this work, a rapid chemical functionalization approach using a number of diarylcarbene derivatives, followed by the azo-coupling of substituted diazonium salts, for the covalent introduction of selected functional groups to the CB surface, is reported. Characterization of the modified CB by XPS, TGA, CHN, and ATR-IR collectively confirmed surface functionalization, estimating surface grafting densities of the order of 10(13) and 10(14) molecules/cm(2). Nanocomposites, synthesized by solvent mixing PP with pristine and modified CB, demonstrated macroscopic property changes as a result of the nanoparticle surface functionalization. Pronounced improvements were observed for PP nanocomposites prepared with a dodecyl-terminated diaryl functionalized CB, in which TEM analysis established improved nanofiller dispersion owing to the enhanced CB-PP interfacial interactions in the nanocomposite. Observed dielectric relaxation responses at 20 wt % loading and a reduced percolation threshold realized conductivities of 1.19 × 10(-4) S cm(-1) at 10 wt %, compared to 2.62 × 10(-15) S cm(-1) for pristine CB/PP nanocomposites at the same filler loading. In addition, thermal properties signify an increase in the number of nucleation sites by the raised degree of crystallinity as well as increased melting and crystallization temperatures.
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Affiliation(s)
- Céline Shepherd
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Emina Hadzifejzovic
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Fatma Shkal
- School of Engineering, Cardiff University , The Queen's Buildings, The Parade, Cardiff CF24 3AA, United Kingdom
| | - Kerstin Jurkschat
- Department of Materials, University of Oxford , Parks Road, OX1 3PH Oxford, United Kingdom
| | - Jonathan Moghal
- Department of Materials, University of Oxford , Parks Road, OX1 3PH Oxford, United Kingdom
| | - Emily M Parker
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Montree Sawangphruk
- Department of Chemical and Biomolecular Engineering, School of Energy Science and Technology, Vidyasirimedhi Institute of Science and Technology , Rayong 21210, Thailand
| | - Daniel R Slocombe
- School of Engineering, Cardiff University , The Queen's Buildings, The Parade, Cardiff CF24 3AA, United Kingdom
| | - John S Foord
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Mark G Moloney
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, United Kingdom
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Yang P, Moloney MG. Surface modification of polymers with bis(arylcarbene)s from bis(aryldiazomethane)s: preparation, dyeing and characterization. RSC Adv 2016. [DOI: 10.1039/c6ra24392d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Modification of polymer beads by a series of bis(arylcarbene) provides materials with different surface chemical characteristics, and a subsequent dyeing process generates colored polymers with a variety of surface functional groups.
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Affiliation(s)
- Pengfei Yang
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- UK
- School of Chemistry and Pharmaceutical Engineering
| | - Mark G. Moloney
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- UK
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Baratha KV, Nourry A, Pilard JF. Synthesis of NR based Polyurethanes containing phosphorylated polymers as chain extenders. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.07.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Esfahani H, Prabhakaran MP, Salahi E, Tayebifard A, Keyanpour-Rad M, Rahimipour MR, Ramakrishna S. Protein adsorption on electrospun zinc doped hydroxyapatite containing nylon 6 membrane: Kinetics and isotherm. J Colloid Interface Sci 2015; 443:143-52. [DOI: 10.1016/j.jcis.2014.12.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Revised: 12/03/2014] [Accepted: 12/04/2014] [Indexed: 01/01/2023]
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Lim JI, Im H, Lee WK. Fabrication of porous chitosan-polyvinyl pyrrolidone scaffolds from a quaternary system via phase separation. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 26:32-41. [PMID: 25410721 DOI: 10.1080/09205063.2014.979386] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Three-dimensional porous chitosan-polyvinyl pyrrolidone (PVP) scaffolds were fabricated for tissue engineering applications via liquid-liquid or liquid-solid phase separation. A mixture of an acidic aqueous solution with butanol as a non-solvent and a chitosan-PVP quaternary system were freeze-dried. We then studied the homogenous open pore structure and the minute pore distribution in order to improve the mass transfer and cell seeding efficiency while also obtaining the optimal ratio of PVP to provide high interconnectivity and to improve the open-pore structure. The properties of the porous chitosan-PVP scaffolds - including the microstructure, chemical release, water absorption properties, and cell proliferation tests were studied - and the results were compared against those obtained from conventional scaffolds. chitosan-PVP scaffolds with a porosity of over 70% were obtained, and the pore morphology on the surface and within the porous scaffolds showed the presence of homogenous open pores with excellent interconnectivity. As the PVP content increased, main pores (50-100 μm) and minute pores (4-10 μm) could be clearly observed. Also, the porous scaffold showed an improved efficiency for cell adhesion after the cells were cultured for 4 h. After 72 h, the cultured cells presented an increase in the cell proliferation and on the porous scaffolds. These results strongly suggest that the porous chitosan-PVP scaffolds can be widely used in tissue engineering, including for biopatches and artificial skin applications.
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Affiliation(s)
- Jin Ik Lim
- a Laboratory of Biointerfaces/Tissue Engineering, Department of Chemical Engineering, Institute of Tissue Regeneration Engineering, College of Engineering , Dankook University , Jukjeon-dong, Yongin-si , Gyeonggi-do , Republic of Korea
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Bagwell CL, Leonard DML, Griffiths JP, Moloney MG, Stratton NJ, Travers DP. Post-Polymerization Modification of Materials using Diaryldiazomethanes: Changes to Surface Macroscopic Properties. MACROMOL REACT ENG 2013. [DOI: 10.1002/mren.201200088] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Claire L. Bagwell
- Department of Chemistry, Chemistry Research Laboratory; The University of Oxford; 12 Mansfield Road Oxford OX1 3TA UK
| | - David M. L. Leonard
- Department of Chemistry, Chemistry Research Laboratory; The University of Oxford; 12 Mansfield Road Oxford OX1 3TA UK
| | - Jon-Paul Griffiths
- Oxford Advanced Surfaces Group Plc, Begbroke Centre for Innovation and Enterprise, Oxford University Begbroke Science Park; Sandy Lane Yarnton OX5 1PF UK
| | - Mark G. Moloney
- Department of Chemistry, Chemistry Research Laboratory; The University of Oxford; 12 Mansfield Road Oxford OX1 3TA UK
| | - Nick J. Stratton
- Department of Chemistry, Chemistry Research Laboratory; The University of Oxford; 12 Mansfield Road Oxford OX1 3TA UK
| | - Daniel P. Travers
- Department of Chemistry, Chemistry Research Laboratory; The University of Oxford; 12 Mansfield Road Oxford OX1 3TA UK
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Maniruzzaman M, Morgan DJ, Mendham AP, Pang J, Snowden MJ, Douroumis D. Drug–polymer intermolecular interactions in hot-melt extruded solid dispersions. Int J Pharm 2013; 443:199-208. [DOI: 10.1016/j.ijpharm.2012.11.048] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 11/03/2012] [Accepted: 11/05/2012] [Indexed: 10/27/2022]
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Lim JI, Lee YK, Shin JS, Lim KJ. Preparation of Interconnected Porous Chitosan Scaffolds by Sodium Acetate Particulate Leaching. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 22:1319-29. [DOI: 10.1163/092050610x504783] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Jin Ik Lim
- a National Core Research Center for Nanomedical Technology, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, South Korea
| | - Yong-Keun Lee
- b Denforus Co, 3001-2 Bangbae-dong, Seocho-Gu, Seoul 137-974, South Korea
| | - Jeon-Soo Shin
- c Department of Microbiology, College of Medicine, Yonsei University, Seoul 120-752, South Korea
| | - Kook-Jin Lim
- d National Core Research Center for Nanomedical Technology, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, South Korea.
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Choong C, Foord JS, Griffiths JP, Parker EM, Baiwen L, Bora M, Moloney MG. Post-polymerisation modification of surface chemical functionality and its effect on protein binding. NEW J CHEM 2012. [DOI: 10.1039/c2nj00002d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Aphaiwong A, Moloney MG, Christlieb M. Surface functional polymer library by post-polymerisation modification using diarylmethylenes: metal ligand catch and release. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm34942f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Davis PJ, Harris L, Karim A, Thompson AL, Gilpin M, Moloney MG, Pound MJ, Thompson C. Substituted diaryldiazomethanes and diazofluorenes: structure, reactivity and stability. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.01.116] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abraham S, Unsworth LD. Multi‐functional initiator and poly(carboxybetaine methacrylamides) for building biocompatible surfaces using “nitroxide mediated free radical polymerization” strategies. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24517] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sinoj Abraham
- Chemical and Materials Engineering Department, University of Alberta, National Research Council (Canada), National Institute for Nanotechnology, Edmonton, Alberta, Canada
| | - Larry D. Unsworth
- Chemical and Materials Engineering Department, University of Alberta, National Research Council (Canada), National Institute for Nanotechnology, Edmonton, Alberta, Canada
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Griffiths JP, Maliha B, Moloney MG, Thompson AL, Hussain I. Surface functional polymers by post-polymerization modification using diarylcarbenes: introduction, release and regeneration of hydrogen peroxide and bactericidal activity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:14142-14153. [PMID: 20672850 DOI: 10.1021/la1023482] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Functionalized diarylcarbenes are excellent reactive intermediates suitable for the direct surface modification of organic polymers, and these may be used to introduce urea and thiourea functions onto polystyrene at loading levels of up to 2.3 x 10(13) molecules/cm(2). These functions are capable of the reversible binding and release of peroxide at loading levels of up to 0.6 mmol/g and give polymers that display biocidal activity against a spectrum of gram-positive and gram-negative bacteria.
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Affiliation(s)
- Jon-Paul Griffiths
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, UK
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