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Tyrosinase-Immobilized Biosensor Based on Ionic Property-Modified MWNTs Prepared by Radiation-Induced Graft Polymerization
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  • Journal title : Carbon letters
  • Volume 11, Issue 3,  2010, pp.216-223
  • Publisher : Korean Carbon Society
  • DOI : 10.5714/CL.2010.11.3.216
 Title & Authors
Tyrosinase-Immobilized Biosensor Based on Ionic Property-Modified MWNTs Prepared by Radiation-Induced Graft Polymerization
Ryu, Ha-Na; Choi, Seong-Ho;
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Two-types of ionically modified multi-walled carbon nanotube (MWNTs) based sensors were developed by radiationinduced graft polymerization using vinyl monomers such as 3-(butyl imidazol)-2-(hydroxyl)propyl methyl methacrylate and 1-[(4-ethenylphenyl)methyl]-3-buthyl-imidazolium chloride with ionic properties, in aqueous solution at room temperature. Subsequently, the tyrosinase-immobilized biosensor was fabricated by a hand-casting of the ionic property-modified MWNTs, tyrosinase, and chitosan solution as a binder onto ITO glass surface. The sensing ranges of the tyrosinase-biosensor for phenol in phosphate buffer solution was in the range of 0.005~0.2 mM. The total phenolic compounds mainly such as caffeine of the tyrosinase-immobilized biosensor for commercial coffee were also determined.
Radiation-induced graft polymerization;Tyrosinase-immobilized biosensor;MWNTs;Ionic property-modified MWNTs;
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