期刊
MACROMOLECULES
卷 45, 期 7, 页码 3121-3128出版社
AMER CHEMICAL SOC
DOI: 10.1021/ma300155u
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资金
- Basic Science Research Program [2011-0004375]
- National Research Foundation of Korea (NRF) [2011-0015343]
- Ministry of Education, Science and Technology
- Ministry of Education, Science and Technology [R31-10059]
- PAL through MEST
- U.S. Department of Energy [DE-AC02-05CH11231]
- National Research Foundation of Korea [2011-0015343] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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.
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