Functionalized metallic carbon nanotube devices for pH sensing

被引：56

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.

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页码：220 / 223

页数：4

相关论文

共 25 条

[1] Photocurrent imaging of charge transport barriers in carbon nanotube devices [J].

Balasubramanian, K ;

Burghard, M ;

Kern, K ;

Scolari, M ;

Mews, A .

NANO LETTERS, 2005, 5 (03) :507-510

[2] A selective electrochemical approach to carbon nanotube field-effect transistors [J].

Balasubramanian, K ;

Sordan, R ;

Burghard, M ;

Kern, K .

NANO LETTERS, 2004, 4 (05) :827-830

[3] Electrical transport and confocal Raman studies of electrochemically modified individual carbon nanotubes [J].

Balasubramanian, K ;

Friedrich, M ;

Jiang, CY ;

Fan, YW ;

Mews, A ;

Burghard, M ;

Kern, K .

ADVANCED MATERIALS, 2003, 15 (18) :1515-+

[4] Enzyme-coated carbon nanotubes as single-molecule biosensors [J].

Besteman, K ;

Lee, JO ;

Wiertz, FGM ;

Heering, HA ;

Dekker, C .

NANO LETTERS, 2003, 3 (06) :727-730

[5] Resonant electron scattering by defects in single-walled carbon nanotubes [J].

Bockrath, M ;

Liang, WJ ;

Bozovic, D ;

Hafner, JH ;

Lieber, CM ;

Tinkham, M ;

Park, HK .

SCIENCE, 2001, 291 (5502) :283-285

[6] Charge transfer from ammonia physisorbed on nanotubes -: art. no. 218301 [J].

Bradley, K ;

Gabriel, JCP ;

Briman, M ;

Star, A ;

Grüner, G .

PHYSICAL REVIEW LETTERS, 2003, 91 (21) :1-218301

[7] Electronic and vibrational properties of chemically modified single-wall carbon nanotubes [J].

Burghard, M .

SURFACE SCIENCE REPORTS, 2005, 58 (1-4) :1-109

[8] Extreme oxygen sensitivity of electronic properties of carbon nanotubes [J].

Collins, PG ;

Bradley, K ;

Ishigami, M ;

Zettl, A .

SCIENCE, 2000, 287 (5459) :1801-1804

[9]

Cuniberti G, 2005, LECT NOTES PHYS, V680

[10] Identifying and counting point defects in carbon nanotubes [J].

Fan, YW ;

Goldsmith, BR ;

Collins, PG .

NATURE MATERIALS, 2005, 4 (12) :906-911