Functionalized metallic carbon nanotube devices for pH sensing

被引：55
|
作者：
Maroto, Alicia
Balasubramanian, Kannan
Burghard, Marko
Kern, Klaus
机构：
[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
[2] Univ Rovira & Virgili, Chemometr Qualimetr & Nanosensors Grp, Tarragona 43007, Spain
来源：
CHEMPHYSCHEM | 2007年 / 8卷 / 02期
关键词：
carbon nanotubes; electrochemistry; functionalization; sensors; surface chemistry;
D O I：
10.1002/cphc.200600498
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：
A pH sensor based upon gentle covalent modification of individual metallic single-wall carbon nanotubes is demonstrated. The sensing mechanism relies upon the protonation-dependent charge carrier scattering (see figure) by N,N-diethylaniline moieties anchored to the tube sidewall. This novel approach holds promise to extend the accessible range of nanotube-based (bio)chemical sensors. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码：220 / 223
页数：4
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