Hydrogen Peroxide Oxidation Reaction on a 4-Mercaptopyridine Self-Assembled Monolayer on Au(111) Metallized by Platinum Nanoislands

Alkanethiols on platinum: multicomponent self-assembled monolayers.

We have studied the formation of self-assembled monolayers (SAMs) of n-alkanethiols on platinum thin films using X-ray photoelectron spectroscopy (XPS), reflection-absorption infrared spectroscopy (RAIRS), spectroscopic ellipsometry (SE), and contact angle (CA) measurements. Specifically, SAMs of 1-hexanethiol, 1-dodecanethiol, and 1-octadecanethiol were grown on polycrystalline Pt films, and t...

Self-Assembled Monolayer of Thiols on Gold Electrodes Prepared by Gold Electro-chemical Deposition on Platinum Wire

The gold electrodes modified with organic compounds (frequently organic thiols and their derivates), represent a new category of devices which are widely used in molecular recognition, in special in case of biomolecules analysis. Alkanethiols are spontaneously adsorbed on the gold surface and form a monomolecular film, with a highly ordered structure, called a self-assembled monolayer (SAM). Th...

Local reaction kinetics by imaging: CO oxidation on polycrystalline platinum.

Amperometric sensor for hydrogen peroxide based on immobilized cytochrome c on binary self-assembled monolayers.

A sensitive sensor for the determination of hydrogen peroxide (H(2)O(2)) was fabricated by immobilizing cytochrome c (cyt c) on binary self-assembled monolayers (SAMs) of 5-(1,2-dithiolan-3-yl)valeric acid (thioctic acid, T-COOH) and 5-(1,2-dithiolan-3-yl)valeramide (thioctic acid amide, T-NH(2)) on gold electrodes. The electrochemical characteristics of immobilized cyt c were investigated by c...

Self-assembled monolayer-enhanced hydrogen sensing with ultrathin palladium films

Resistive-type palladium structures for hydrogen sensing remains as a research focus for their simplicity in device construction. We demonstrate that a siloxane self-assembled monolayer placed between a substrate and an evaporated ultrathin Pd film promotes the formation of small Pd nanoclusters and reduces the stiction between the palladium and the substrate. The resulting Pd nanocluster film ...