| Synthesis of tethered-polymer brush by atom transfer radical polymerization from a plasma-polymerized-film-coated quartz crystal microbalance and its application for immunosensors. | |
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MedLine Citation:
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PMID: 15556363 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study synthesizes a tethered surface-grafted poly(acrylic acid) with quartz crystal microbalance (QCM) surfaces and provides detailed analysis of their properties and application. A tethered polyelectrolyte brush of poly(acrylic acid) is generated by first covering the substrate with a plasma-polymerized allyl alcohol (pp-AA) film, changing the polymerization initiators (bromination), and then grafting through atom transfer radical polymerization (ATRP) of tert-butyl acrylate (t-BA); these initiators are immobilized on a surface and exposed to a monomer. Finally, we convert the poly(t-BA) brush into poly(acrylic acid) through hydrolysis. We use the QCM technique to measure configuration change of the tethered poly(acrylic acid) grafted chains with two different degrees of polymerization (DP=50,200) in aqueous solutions at three different pH values (4.0, 4.8, and 5.4). The tethered poly(acrylic acid) grafted QCM shows that repeatable frequency responses are induced by pH change of solution. These frequency responses of large DP for pH are 20 times larger than responses of lower DP for pH. The frequency response of antibody immobilization on tethered poly(acrylic acid) grafted QCM (DP=200) and its frequency response of immunoreaction are 10 times larger than conventional immobilization methods by cysteamine with glutalaldehyde coupling of the antibody. The tethered poly(acrylic acid) grafted QCM can increase the frequency response for pH, the immobilization amount of antibody, and immunosensor response. |
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Authors:
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Shigeru Kurosawa; Hidenobu Aizawa; Zainal Abidin Talib; Björn Atthoff; Jöns Hilborn |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Biosensors & bioelectronics Volume: 20 ISSN: 0956-5663 ISO Abbreviation: Biosens Bioelectron Publication Date: 2004 Dec |
Date Detail:
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Created Date: 2004-11-23 Completed Date: 2005-06-03 Revised Date: 2009-07-14 |
Medline Journal Info:
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Nlm Unique ID: 9001289 Medline TA: Biosens Bioelectron Country: England |
Other Details:
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Languages: eng Pagination: 1165-76 Citation Subset: IM |
Affiliation:
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National Institute of Advanced Industrial Science and Technology (AIST), 1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan. shigeru-kurosawa@aist.go.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acrylic Resins
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chemistry* Biosensing Techniques / instrumentation, methods* Coated Materials, Biocompatible / chemical synthesis Electrochemistry / instrumentation, methods* Hot Temperature Immunoassay / instrumentation, methods* Microvilli Polymers / chemistry Propanols / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Acrylic Resins; 0/Coated Materials, Biocompatible; 0/Polymers; 0/Propanols; 107-18-6/allyl alcohol; 9003-01-4/carbopol 940 |
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