53 research outputs found
Ultrahigh vacuum study on the reactivity of organic surfaces terminated by -OH and –COOH groups prepared by self-assembly of functionalized alkanethiols on Au substrates
Two different organic surfaces were created by self-assembly (SA) of bifunctionalized monomers using OH- and COOH-terminated alkanethiols. X-ray photoelectron (XP) and soft X-ray absorption (NEXAFS) spectroscopy have been used to determine the chemical composition of and the molecular orientation in the SA monolayers adsorbed on Au substrates. Subsequently the two OH- and COOH-terminated organic surfaces were exposed to phenyl isocyanate (C6H5NCO, PIC) in order to investigate their chemical reactivity. In both cases the reactivity to gas-phase PIC was very low for the sample at room temperature. Reaction yields of more than 80% could, however, be achieved by depositing multilayers on a sample cooled down to 120 K which was subsequently warmed to 290 K
Phase Transitions of Alkanethiol Self-Assembled Monolayers at an Electrified Gold Surface
Polychlorierte Biphenyle (PCB) und Organochlorpestizide im Sediment der Ostsee und der Küsten-gewÄsser Mecklenburg-Vorpommerns
Determination of Thickness, Dielectric Constant of Thiol Films, and Kinetics of Adsorption Using Surface Plasmon Resonance
Esterification of Self-Assembled Carboxylic-Acid-Terminated Thiol Monolayers in Acid Environment: A Time-Dependent Study
Real-Time Monitoring of the Nucleation and Growth of ZnO Nanoparticles Using an Optical Hyper-Rayleigh Scattering Method
Scanning Tunneling Microscopy of Self-Assembled Phenylene Ethynylene Oligomers on Au(111) Substrates
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