Trapping of molecules in alkanethiol self-assembled monolayer matrices
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چکیده
منابع مشابه
Trapping of molecules in alkanethiol self-assembled monolayer matrices
Reactions of NH4 in water solutions with self-assembled monolayer (SAM) surfaces result in the deposition of ammonia in the monolayers. Similarities between this and the soft landing of ions seen in low energy gas phase ion± surface collisions suggest that monolayers can be used as matrices to preserve species. Ammonia can be incorporated only into thicker SAMs such as those made from octadecan...
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Electron tunneling through self-assembled monolayers (SAMs) of alkanethiols was investigated using nanometer scale devices that allow temperature-dependent current-voltage, I(V, T), measurements. The I(V, T) measurement results show, for the first time, temperature-independent electron transport characteristics, proving direct tunneling as the transport mechanism in alkanethiol SAMs. The measur...
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Electron tunneling through self-assembled monolayers of alkanethiols is investigated. Temperature-dependent current– voltage measurements are performed to distinguish between di erent conduction mechanisms. Temperature-independent electron transport is observed, proving direct tunneling as the dominant conduction mechanism of alkanethiols. An exponential dependence of tunneling current on molec...
متن کاملThe e†ect of electrostatic Ðelds on an oligo(ethylene glycol) terminated alkanethiol self-assembled monolayer
Static energy minimization and Monte Carlo simulation are used to study the e†ect of external electrostatic Ðelds on the structure of a self-assembled monolayer (SAM) formed by methoxytri(ethylene glycol) terminated alkanethiol molecules. It is found that Ðelds of the order of 1 V in strength can substantially change the A ~1 equilibrium conÐguration of the SAM, making the oxygen atoms of the ...
متن کاملThe Effect of Electrostatic Fields on an Oligo(Ethylene Glycol) Terminated Alkanethiol Self−Assembled Monolayer
Static energy minimization and Monte Carlo simulation are used to study the effect of external electrostatic fields on the structure of a self−assembled monolayer (SAM) formed by methoxy tri(ethylene glycol) terminated alkanethiol molecules. It is found that fields of the order of 1 V/Å in strength can substantially change the equilibrium configuration of the SAM, making the oxygen atoms of the...
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ژورنال
عنوان ژورنال: Molecular Physics
سال: 1999
ISSN: 0026-8976,1362-3028
DOI: 10.1080/00268979909482970