Immobilization of biorecognition molecules on O-2 plasma-functionalized SWCNT electrodes for biosensors
- Authors
- Jin, Joon-Hyung; Kim, Joon Hyub; Lee, Jun-Yong; Min, Nam Ki
- Issue Date
- 11월-2012
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- SWCNT; Plasma functionalization; Immobilization
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.61, no.10, pp.1646 - 1650
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 61
- Number
- 10
- Start Page
- 1646
- End Page
- 1650
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/107087
- DOI
- 10.3938/jkps.61.1646
- ISSN
- 0374-4884
- Abstract
- Biointerfaces capable of biological recognition and specificity are very important for the development of carbon nanotube based biosensors. Here, we explore experimentally the effects of O-2 plasma treatment on the biomolecule immobilization properties of single-walled carbon nanotube (SWCNT) electrodes for electrochemical biosensing. The SWCNT film was integrated into an electrochemical three-electrode system on a glass substrate and then treated with an O-2 plasma to improve its electrochemical response. Glucose oxidases, antibodies, and deoxyribonucleic acids (DNAs) were covalently immobilized on the plasma-functionalized (pf) SWCNT working electrodes, and the electrochemical and bioelectrocatalytic properties of three biomolecular assemblies generated on the pf-SWCNT electrodes were investigated using cyclic voltammetry, square-wave voltammetry, and chronoamperometry. The pf-SWCNT films were found to provide electrochemical biosensing electrodes having high electroactivity and sensitivity for detecting glucoses, antigens, and DNA molecules.
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Collections - College of Science and Technology > Department of Electro-Mechanical Systems Engineering > 1. Journal Articles
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