Spectroscopic and electrochemical characterization of interfacial biomimetic assemblies on electrochemically generated gold oxide surfaces.
We report on the formation of a gold oxide layer and the reaction of this oxide with an acid chloride to form a stable, relatively complete monolayer bound through an ester-like bond to the gold oxide surface. We have used cyclic voltammetry, FTIR and optical ellipsometry to characterize this novel monolayer structure. The exposed functional groups of this monolayer can participate in subsequent surface reactions, opening the door to the use of oxide-based surface attachment chemistry on metallic substrates. This chemistry will allow for the formation of films tailored to contain both hydrophobic and hydrophilic regions, stacked at predetermined distances from the substrate that may serve as biomembrane mimetic assemblies.
Krysiński
Paweł
P
Laboratory of Electrochemistry, Department of Chemistry, University of Warsaw, 02-093 Warsaw, Pasteura 1, Poland. pakrys@chem.uw.edu.pl
Blanchard
G J
GJ
D000272:Adipates / Q000737:chemistry; D040761:Biomimetic Materials / Q000138:chemical synthesis*; D004563:Electrochemistry; D004952:Esters / Q000737:chemistry; D005296:Ferrous Compounds / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D006878:Hydroxides / Q000737:chemistry*; D008567:Membranes, Artificial; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties
D000272:Adipates; D004952:Esters; D005296:Ferrous Compounds; D006878:Hydroxides; D008567:Membranes, Artificial; C503083:adipoyl chloride; C503082:gold(III) hydroxide; C071550:ferrocenemethanol; D006046:Gold