Synthesis of polypyrrole/MoO3 hybrid thin films and their volatile organic compound gas-sensing properties

被引：135

作者：

Hosono, K ^{[1
]}

Matsubara, I ^{[1
]}

Murayama, N ^{[1
]}

Woosuck, S ^{[1
]}

Izu, N ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Moriyama Ku, Nagoya, Aichi 4638560, Japan

来源：

CHEMISTRY OF MATERIALS | 2005年 / 17卷 / 02期

关键词：

D O I：

10.1021/cm0492641

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：

Thin films of the intercalated organic-inorganic hybrids (PPy)(x)MoO3 (PPy: polypyrrole) have been prepared by an ex-situ intercalation process. The host MoO3 films were first deposited on LaAlO3 (LAO) single-crystal substrates by using a CVD method followed by the intercalation of PPy into the MoO3 films. The preparation of highly b-axis oriented MoO3 films is crucial to prepare the (PPY)(x)MoO3 films. The (PPy)(x)MoO3 thin film shows a semiconducting-like transport with an activation energy of 0.21 eV. The (PPy)(x)MoO3 thin films show a distinct response to VOCs by increasing their electrical resistivity and exhibit higher sensitivities to polar analytes such as formaldehyde and acetaldehyde, whereas it showed almost no response to toluene and benzene.

引用

页码：349 / 354

页数：6

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