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Showing 1 to 10 of 10 for “"Alkanethiolate"”.
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Size effects on self-assembly and melting of silver-alkanethiolate on inert surfaces
… and generates a significantly larger amount of alkanethiolate. Two dissimilar products are yielded depending on the size of the clusters. Small Ag clusters are more likely to be converted into multilayer silver-alkanethiolate (AgSR, R = CnH2n+1) crystals, while larger Ag clusters form …
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Structural Characterization of Sulfur-Based Monomolecular Thin Films: I. Langmuir-Blodgett Films Derived From Multisulfur Heterocycles. II. Second Harmonic Generation Studies of Alkanethiolates on Ag and Au
… studied. Self-assembled monolayers (SAMs) of alkanethiolates have been prepared on Ag and Au surfaces, both SHG and AC impedance measurements of the Ag-alkanethiolate-electrolyte systems have been performed for alkanethiols with different chain lengths. The capacitance of the alkanethiolate …
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Studies of Structure and Reactivity in Monolayer Assemblies: 1. Ozonolysis of Alkanethiolate Self Assembled Monolayers on Au. 2. In-Plane Resistivity of Ultrathin Gold Films as a High Sensitivity, Molecularly Differentiated Probe of Chemisorption at the Liquid-Metal Interface
… at 1 Hz resulted in 3 sigma uncertainties in alkanethiolate coverage of 1.4 x 10--4 monolayer. Correlating chemical manipulations with changes in surface morphology as characterized by AFM indicates a significant morphology-related contribution to resistivity which must be controlled to …
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Multidentate Alkanethiols with Cyclohexyl and Pyridyl Frameworks Forming Self-Assembled Monolayers on Gold
… densities of the alkyl chains than a normal alkanethiolate SAM (C18SH). The trends in packing density and conformational order for these SAMs decreased as follows: C18SH >> 3C13CyTSH > 3C8CyTSH > 3C3CyTSH. A preliminary study of the thermal stability of this series of SAMs by XPS measurements …
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Particle-modified Surface Plasmon Resonance Biosensor
… was lower than an SPR biosensor with an alkanethiolate SAM due to the difference in ligand capacity and position in the evanescent field. The binding kinetics of antigen/antibody pair was found to follow the Langmuir model closely in a continuous flow configuration but was heavily limited …
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The Electrochemistry of Ferrocenyl-thiolate Self-Assembled Monolayers for use in a Toll-like Receptor 4-based sensor
… are surface immobilized via ternary alkanethiolate self-assembled monolayers (SAMs) deposited on polycrystalline Au surfaces. These SAMs possess a uniquely low interfacial resistance (? 1 k?) due to the presence of a Ferrocenyl-thiolate component, which mediates electron transfer from …
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Theoretical studies of the dynamics of gas-phase and gas/surface atom+alkane reactions and of the structure and dynamics of water confined between hydrophobic surfaces
… reactions of fluorine atoms with alkanethiolate self-assembled monolayers. Our simulations reproduce the general trends of experimental results for the cousin F+squalane reaction. Our simulations also probe the role that secondary collisions play in determining the final internal …
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Stability, structure, and barrier properties of self-assembled films on metal supports
… the structure and stability of an adsorbed n-alkanethiolate SAM. Thiols adsorb onto gold surfaces modified by submonolayer quantities of silver or copper and form SAMs with macroscopic properties similar to those of SAMs on gold, as evidenced by wetting and ellipsometric thickness …
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Critical size for bulk-to-discrete transition and segment-induced size effect melting of 2D aliphatic layers
… principles in a model system of silver alkanethiolate (AgSCn), which consists of uniform alkyl chains with spatially discrete interfaces and 2D Ag-S slabs. Two novel synthesis methods are complementarily combined to obtain AgSCn lamellar crystals with variable number of layers (m=1-4 and …
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Molecular adsorption at solid/liquid interfaces using self-assembled monolayer films
… be produced that were as densely packed as the alkanethiolate SAMs on gold comprising the first layer. This thesis also used this molecular adsorption process to cause liquid drops to move spontaneously on surfaces by creating local changes in surface energy. The drops could be directed to move …