TY - GEN
T1 - Ordered molecular assembly inside carbon nanotube forest films for high-efficiency enzymatic biofuel cell
AU - Yoshino, Syuhei
AU - Miyake, Takeo
AU - Kaji, Hirokazu
AU - Yamada, Takeo
AU - Hata, Kenji
AU - Nishizawa, Matsuhiko
PY - 2012
Y1 - 2012
N2 - Molecularly ordered composites of polyvinylimidazole-[Os(bipyridine) 2Cl] (PVI-[Os(bpy) 2Cl]) and glucose oxidase (GOD) are assembled inside a film of aligned carbon nanotubes. The structure of the prepared GOD/PVI-[Os(bpy) 2Cl]/CNT composite film is entirely uniform and stable; more than 90% bioelectrocatalytic activity could be maintained even after storage for 6 days. Owing to the ideal positional relationship achieved between enzyme, mediator and electrode, the prepared film shows a high bioelectrocatalytic activity for glucose oxidation (ca. 15 mA cm-2 at 25 °C) with an extremely high electron turnover rate (ca. 650 s -1) comparable to the value for the GOD solutions, indicating almost every enzyme molecules entrapped within the ensemble (ca. 3 × 10 12 enzymes in a 1× 1 mm2 film) can work to the full. The free-standing, flexible composite film can be used by winding on a needle device, for example, a self-powered sugar monitor.
AB - Molecularly ordered composites of polyvinylimidazole-[Os(bipyridine) 2Cl] (PVI-[Os(bpy) 2Cl]) and glucose oxidase (GOD) are assembled inside a film of aligned carbon nanotubes. The structure of the prepared GOD/PVI-[Os(bpy) 2Cl]/CNT composite film is entirely uniform and stable; more than 90% bioelectrocatalytic activity could be maintained even after storage for 6 days. Owing to the ideal positional relationship achieved between enzyme, mediator and electrode, the prepared film shows a high bioelectrocatalytic activity for glucose oxidation (ca. 15 mA cm-2 at 25 °C) with an extremely high electron turnover rate (ca. 650 s -1) comparable to the value for the GOD solutions, indicating almost every enzyme molecules entrapped within the ensemble (ca. 3 × 10 12 enzymes in a 1× 1 mm2 film) can work to the full. The free-standing, flexible composite film can be used by winding on a needle device, for example, a self-powered sugar monitor.
KW - Biofuel cell
KW - Carbon nanotube forest
KW - Glucose oxidase
KW - Redox polymer
UR - http://www.scopus.com/inward/record.url?scp=84901765122&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84901765122&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84901765122
SN - 9780979806452
T3 - Proceedings of the 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012
SP - 1867
EP - 1869
BT - Proceedings of the 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012
PB - Chemical and Biological Microsystems Society
T2 - 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012
Y2 - 28 October 2012 through 1 November 2012
ER -