Formation of a Molecular Wire Using the Chemically Adsorbed Monomolecular Layer Having Pyrrolyl Groups

Autor: Kazufumi Ogawa, Norihisa Mino, Shin-ichi Yamamoto, Tadashi Ohtake
Jazyk: angličtina
Rok vydání: 2011
Předmět:
Zdroj: Journal of Nanotechnology, Vol 2011 (2011)
Druh dokumentu: article
ISSN: 1687-9503
1687-9511
DOI: 10.1155/2011/560830
Popis: A molecular wire containing polypyrrolyl conjugate bonds has been prepared by a chemical adsorption technique using 1,1,1-trichloro-12-pyrrolyl-1-siladodecane (PNN) and an electrooxidative polymerization technique, and the conductivity of the molecular wire without any dopant has been measured by using AFM/STM at room temperature. When sample dimension measured was about 0.3 nm (thickness of the conductive portion in the PNN monomolecular layer) ×100 μm (the average width of an electric path) ×2 mm (the distance between Pt positive electrode and the AFM tip covered with Au), the conductivity of the polymerized PNN molecular wire at room temperature was larger than 1.6 × 105 S/cm both in an atmosphere and in a vacuum chamber of 10−5 Torr. The activation energy obtained by Arrhenius' plots was almost zero in the temperature range between 320 and 450 K.
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