Rectifying Diodes from Asymmetrically Functionalized Single-Wall Carbon Nanotubes

Asymmetrically functionalized single-wall carbon nanotubes (SWNTs) have been prepared by a covalent reaction of an 11-mercaptoundecanol-modified Au surface with oxidized SWNT cylinders. While one end of the tubes is attached to gold substrate via ester groups, the free carboxylic substituents on the...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2006-03, Vol.128 (10), p.3134-3135
Main Authors: Wei, Zhong, Kondratenko, Mykola, Dao, Lê H, Perepichka, Dmitrii F
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electric Conductivity
Electrodes
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Electronic transport in multilayers, nanoscale materials and structures
Electronics
Exact sciences and technology
Mercury - chemistry
Molecular electronics, nanoelectronics
Nanotechnology - methods
Nanotubes
Nanotubes, Carbon - chemistry
Physics
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Sulfhydryl Compounds - chemistry
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Summary:Asymmetrically functionalized single-wall carbon nanotubes (SWNTs) have been prepared by a covalent reaction of an 11-mercaptoundecanol-modified Au surface with oxidized SWNT cylinders. While one end of the tubes is attached to gold substrate via ester groups, the free carboxylic substituents on the other end can be either ionized (CO2 -) or esterified (CO2Et), creating a donor−acceptor asymmetric and acceptor−acceptor symmetric SWNT, respectively. Study of the SWNT monolayer conductance in Hg drop junction experiments reveals a pronounced diode-like behavior for donor−SWNT−acceptor junctions, while acceptor−SWNT−acceptor junctions are electrically symmetric.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja053950z