Metastable-atom-induced dissociation of dodecanethiolate self-assembled monolayers on gold substrates

Article Abstract:

Metastable-atom-induced dissociation of dodecanethiolate SAMs on a Au substrate was studied by means of the time-of-flight measurement of ejected ions with the combination of a pulsed metastable helium atom beam and the aid of metastable atom deexcitation spectroscopy. Two kinds of desorbed ions were observed and assigned to H (super + ) and CH (sub x) (super +).

Ions, Substrates

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Even-odd orientation and chain-length effects in the energy exchange of argon collisions with self-assembled monolayers

Article Abstract:

Self-assembled monolayers (SAMs) of alkanethiols, HS(CH2)(sub n-1)CH3 absorbed on gold is used to explore the dynamics of energy exchange and thermalization in high-energy gas-surface collisions. The results suggest that long-range molecular motions involving up to 6 carbon atoms play the dominate role in controlling the dynamics of the gas-surface impact.

Monomolecular films, Thermal properties, Chemistry, Physical and theoretical, Physical chemistry, Atomic properties

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The nature of electronic coupling between ferrocene and gold through allkanethiolate monolayers on electrodes: the importance of chain composition, interchain coupling, and quantum interference

Article Abstract:

The importance of chain composition and interchain interactions (electronic coupling through nonbonded contacts) on the electron -transfer rate constant for fully saturated chains is investigated. The result suggests that intermolecular electronic coupling pathways contribute to the electron transfer.

Observations, Charge transfer, Quantum chemistry

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