Observation of single helical peptide molecule incorporated into alkanethiol self-assembled monolayer on gold by scanning tunneling microscopy
Article Abstract:
The bicomponent self-assembled monolayers (SAMS) are formed by incorporation of helical peptides into the alkanethiol monolayer, and are characterized by Fourier transform infrared reflection-adsorption spectroscopy (FTIR RAS) and scanning tunneling microscopy (STM). FTIR RAS spectra indicate that the helical peptides are incorporated into the defects in the alkanethiol SAM without disturbing the film structure.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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Effects of dipole moment, linkers, and chromophores at side chains on long-range electron transfer through helical peptides
Article Abstract:
Octadecapeptides carrying a ferrocene moiety at the molecular terminal are self-assembled on gold, and long-range electron transfer from the ferrocene moiety to gold is investigated by electrochemical methods. Effects on electron transfer of dipole moment of helical peptides, linkers connecting the peptide to gold, and chromophores introduced into the side are discussed.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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Molecular rectification of a helical peptide with a redox group in the metal-molecule-metal junction
Article Abstract:
A helical hexadecapeptide immobilized on gold through a thiophenyl group at the N-terminal is analyzed by scanning tunneling microscopy under ultrathin vacuum to obtain the I-V response at a molecular level. The molecular rectification behavior is due to the ferrocene unit regulating the direction of the electron transfer at the metal-molecule junction.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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