Enhanced Charge Transport in Enzyme-Wired Organometallic Block Copolymers for Bioenergy and Biosensors
SCIE
SCOPUS
- Title
- Enhanced Charge Transport in Enzyme-Wired Organometallic Block Copolymers for Bioenergy and Biosensors
- Authors
- Lee, J; Ahn, H; Choi, I; Boese, M; Park, MJ
- Date Issued
- 2012-04-10
- Publisher
- AMER CHEMICAL SOC
- Abstract
- Wiring of glucose oxidase (GOx) onto electrode surface was successfully achieved by cross-linked networks of organometallic block copolymers comprising electroactive ferrocene moieties and chemically cross-linkable diene groups, poly(ferrocenyldimethylsilane-b-isoprene)s (PFS-PIs). Different nanoscale morphologies of PFS-PIs, i.e., bicontinuous structure, nanowires, and nanoparticles, have been derived by varying molecular weights and casting solvents. Upon examining catalytic current responses of the GOx integrated PFS-PI systems, notably, the morphology of PFS-PI is found out to be a crucial parameter in determining the efficiency of electron transfer. For example, the use of bicontinuous PFS-PI confirms 2-50 times improved catalytic current densities, compared with the values of other morphologies; the maximum catalytic current of glucose oxidation was 0.7 mA/cm(2) at 70 mM glucose concentration. The biosensing ability of the fabricated electrode with structural optimization was also exploited, and good sensitivity is obtained at the physiological concentration of glucose in blood.
- Keywords
- MINIATURE BIOFUEL CELL; CARBON NANOTUBES; FUEL-CELLS; GLUCOSE; ELECTRODES; LACCASE; SURFACE; O-2; ELECTROREDUCTION; POLYMERIZATION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/16408
- DOI
- 10.1021/MA300155U
- ISSN
- 0024-9297
- Article Type
- Article
- Citation
- MACROMOLECULES, vol. 45, no. 7, page. 3121 - 3128, 2012-04-10
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