High resolution X-ray photoelectron spectroscopy of chlorine-terminated GaAs(111)A surfaces

Article Abstract:

Oxide-terminated and Cl-terminated GaAs(111)A surfaces are characterized in the As and Ga 3d regions by high-resolution, soft X-ray photoelectron spectroscopy. The result has confirmed that wet chemical etching allows for the formation of well-defined, Cl-terminated GaAs(111)A surfaces free of detectable elemental As, which has provided a starting point for further functionalization of GaAs.

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TAT peptide immobilization on gold surfaces: A comparison study with a thiolated peptide and alkylthiols using AFM, XPS, and FT-IRRAS

Article Abstract:

A gold surface is functionalized by three different methods, adsorption from solution, microcontact printing, and dip-pen nanolithiography using a TAT peptide. It is concluded that the structure of the alkyl chains of the TAT peptides is fairly disordered and different after each procedure.

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Covalent attachment of TAT and thiolated alkyl molecules on GaAs surfaces

Article Abstract:

Four TAT peptide fragments are used to functionalize GaAs surfaces by adsorption from solution. Two well-studied alkylthiols, mercaptohexdeconoic acid (MHA) and 1-octadecanethiol (ODT) are utilized as references to understand the structure of the TAT peptide monolayer on GaAs.

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