An electrochemical approach to investigate gated electron transfer using a physiological model system: Cytochrome c immobilized on carboxylic acid-terminated alkanethiol self-assembled monolayers on gold electrodes

Article Abstract:

An electron transfer scheme of cytochrome c on carboxylic acid-terminated alkanethiol self-assembled monolayers on gold (111) electrodes is reported.

Usage, Cytochrome c, Carboxylic acids

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Localization of image state electrons in the sulfur headgroup region of alkanethiol self-assembled films

Article Abstract:

The experimental observation of electronic Raman scattering between image potential surface states is described and is observed from roughened Au and Ag surfaces covered with long-chain alkanethiol self-assembled monolayers. Models potential incorporating step edge surface roughness features indicate that the image state electron resides within or near the sulfur headgroup layer.

Science & research, Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Gold, Optical properties, Surface chemistry, Raman spectroscopy, Chemical properties

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Two-dimensional crystallization of phthalocyanine pigments at the air/water interface

Article Abstract:

Synchrotron X-ray diffraction at grazing angles of incidence was used to investigate the 2D crystallization of highly planar phthalocyanine pigments confined in a lipid Langmuir monolayer. The pigment, lipid and counterions were found to form a complex wherein the pigment plane is tilted with respect to the liquid surface. Results also revealed strong diffraction signals exhibited by both the alkyl tail region of the lipid and the lipid-pigment complex.

Phthalocyanins, Crystallization

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