Molecularly ordered bioelectrocatalytic composite inside a film of aligned carbon nanotubes

Syuhei Yoshino; Takeo Miyake; Takeo Yamada; Kenji Hata; Matsuhiko Nishizawa

doi:10.1002/aenm.201200422

Molecularly ordered bioelectrocatalytic composite inside a film of aligned carbon nanotubes

Syuhei Yoshino, Takeo Miyake, Takeo Yamada, Kenji Hata, Matsuhiko Nishizawa

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

Molecularly ordered composites of polyvinylimidazole-[Os(bipyridine) 2 Cl] (PVI-[Os(bpy)₂Cl]) and glucose oxidase (GOD) are assembled inside a fi lm of aligned carbon nanotubes. The structure of the prepared GOD/PVI- [Os(bpy)₂Cl]/CNT composite fi lm 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 fi lm shows a high bioelectrocatalytic activity for glucose oxidation (ca. 15 mA cm^-2at 25 °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 × 10¹²enzymes in a 1 mm × 1 mm fi lm) can work to the fullest extent. This free-standing, fl exible composite fi lm can be used by winding on a needle device; as an example, a self-powered sugar monitor is demonstrated.

Original language	English
Pages (from-to)	60-64
Number of pages	5
Journal	Advanced Energy Materials
Volume	3
Issue number	1
DOIs	https://doi.org/10.1002/aenm.201200422
Publication status	Published - 2013 Jan
Externally published	Yes

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Materials Science(all)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/aenm.201200422

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title = "Molecularly ordered bioelectrocatalytic composite inside a film of aligned carbon nanotubes",

abstract = "Molecularly ordered composites of polyvinylimidazole-[Os(bipyridine) 2 Cl] (PVI-[Os(bpy)2Cl]) and glucose oxidase (GOD) are assembled inside a fi lm of aligned carbon nanotubes. The structure of the prepared GOD/PVI- [Os(bpy)2Cl]/CNT composite fi lm 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 fi lm shows a high bioelectrocatalytic activity for glucose oxidation (ca. 15 mA cm-2at 25 °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 × 1012enzymes in a 1 mm × 1 mm fi lm) can work to the fullest extent. This free-standing, fl exible composite fi lm can be used by winding on a needle device; as an example, a self-powered sugar monitor is demonstrated.",

author = "Syuhei Yoshino and Takeo Miyake and Takeo Yamada and Kenji Hata and Matsuhiko Nishizawa",

year = "2013",

month = jan,

doi = "10.1002/aenm.201200422",

language = "English",

volume = "3",

pages = "60--64",

journal = "Advanced Energy Materials",

issn = "1614-6832",

publisher = "Wiley-VCH Verlag",

number = "1",

}

TY - JOUR

T1 - Molecularly ordered bioelectrocatalytic composite inside a film of aligned carbon nanotubes

AU - Yoshino, Syuhei

AU - Miyake, Takeo

AU - Yamada, Takeo

AU - Hata, Kenji

AU - Nishizawa, Matsuhiko

PY - 2013/1

Y1 - 2013/1

N2 - Molecularly ordered composites of polyvinylimidazole-[Os(bipyridine) 2 Cl] (PVI-[Os(bpy)2Cl]) and glucose oxidase (GOD) are assembled inside a fi lm of aligned carbon nanotubes. The structure of the prepared GOD/PVI- [Os(bpy)2Cl]/CNT composite fi lm 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 fi lm shows a high bioelectrocatalytic activity for glucose oxidation (ca. 15 mA cm-2at 25 °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 × 1012enzymes in a 1 mm × 1 mm fi lm) can work to the fullest extent. This free-standing, fl exible composite fi lm can be used by winding on a needle device; as an example, a self-powered sugar monitor is demonstrated.

AB - Molecularly ordered composites of polyvinylimidazole-[Os(bipyridine) 2 Cl] (PVI-[Os(bpy)2Cl]) and glucose oxidase (GOD) are assembled inside a fi lm of aligned carbon nanotubes. The structure of the prepared GOD/PVI- [Os(bpy)2Cl]/CNT composite fi lm 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 fi lm shows a high bioelectrocatalytic activity for glucose oxidation (ca. 15 mA cm-2at 25 °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 × 1012enzymes in a 1 mm × 1 mm fi lm) can work to the fullest extent. This free-standing, fl exible composite fi lm can be used by winding on a needle device; as an example, a self-powered sugar monitor is demonstrated.

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DO - 10.1002/aenm.201200422

M3 - Article

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SN - 1614-6832

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EP - 64

JO - Advanced Energy Materials

JF - Advanced Energy Materials

IS - 1

ER -

Molecularly ordered bioelectrocatalytic composite inside a film of aligned carbon nanotubes

Abstract

ASJC Scopus subject areas

UN SDGs

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