Surface chemistry of azomethane adsorbed on Si(111)-7 x 7 surface studied by SR-photoemission, HREELS, and STM

Article Abstract:

The adsorption and thermal decomposition behavior of azomethane on the Si(111)-7 x 7 surface is studied by high-resolution electron energy loss spectroscopy (HREELS), synchrotron radiation photoelectron spectroscopy in the soft x-ray and UV photon energy ranges, and scanning tunneling spectroscopy (STM). It is found that at 90 K substrate temperature, azomethane is adsorbed largely intact in both trans and cis forms.

Science & research, Research, Surface chemistry

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Molecular dynamics simulation of structure, thermodynamic, and dynamic properties of poly(dimethylsilamethylene), poly(dimethylsilatrimethylene) and their alternating copolymer

Article Abstract:

A realistic united-atom (UA) force field is developed for the prediction of thermodynamic, structure, and dynamic properties of two silicon-containing polymers, which are poly(dimethylsilamethylene) (PDMSM)and poly(dimethylsilatrimethylene) (PDMSTM) and their 50:50 alternating copolymer. The separation properties of these polymers for multicomponent hydrocarbon mixtures are investigated.

Greece, Analysis, Molecular dynamics, Atomic properties

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Photoelectrochemical generation of electronically conducting polymer-based hybrid junctions on modified Si(111) surfaces

Article Abstract:

A detailed characterization of thiophene terminated Si(111) surfaces and photoelectrochemical growth of polythiophene on these surfaces is presented. This process leads to the formation of robust conducting polymer/silicon junctions in which the polymer is covalently linked to the silicon substrate through an alkyl spacer.

Thiophene

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