Molecularly Ordered Bioelectrocatalytic Composite Inside a Film of Aligned Carbon Nanotubes

被引：40

作者：

Yoshino, Syuhei ^{[1
]}

Miyake, Takeo ^{[1
,3
]}

Yamada, Takeo ^{[2
,3
]}

Hata, Kenji ^{[2
,3
]}

Nishizawa, Matsuhiko ^{[1
,3
]}

机构：

[1] Tohoku Univ, Dept Bioengn & Robot, Sendai, Miyagi 9808579, Japan

[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3088565, Japan

[3] Japan Sci & Technol Agcy JST, Core Res Evolut Sci & Technol, Tokyo 1020075, Japan

来源：

ADVANCED ENERGY MATERIALS | 2013年 / 3卷 / 01期

关键词：

enzymes; carbon nanotubes (CNTs); biofuel cells; glucose oxidase; self-powered devices; DIRECT ELECTRON-TRANSFER; ENZYMATIC BIOFUEL CELLS; GLUCOSE-OXIDASE; REDOX ENZYMES; RECONSTITUTION; MICROSCALE; BIOSENSORS;

D O I：

10.1002/aenm.201200422

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 d. 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 degrees C) with an extremely high electron-transfer turnover rate (ca. 650 s-1) comparable to the value for GOD solutions, indicating almost every enzyme molecule entrapped within the ensemble (ca. 3 x 1012 enzymes in a 1 mm x 1 mm film) can work to the fullest extent. This free-standing, flexible composite film can be used by winding on a needle device; as an example, a self-powered sugar monitor is demonstrated.

引用

页码：60 / 64

页数：5

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