Effect of molecule-Molecule interaction on the electronic properties of molecularly modified Si/SiO(sub x) surfaces

Article Abstract:

The adsorption of systematically substituted silanes with either simple alkyl or alkyl phenyl ether chains onto oxidized Si is used to study the electronic effects of such molecular monolayers on Si. It is concluded that there is no significant change in surface potential if the length or structure of the connecting chain between the attached dipolar unit and the silicon surface is varied.

All Other Basic Organic Chemical Manufacturing, Industrial Organic Chemicals, Silanes, Chemistry, Physical and theoretical, Physical chemistry, Silane

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Temperature-sensitive surfaces prepared by UV photografting reaction of photosensitizer and N-isopropylacrylamide

Article Abstract:

An attempt was made to prepare thermal-sensitive surfaces by grafting poly(N-isopropylacrylamide) PNIPAAm on the surface of silicone wafers without a cross-linking agent. Dramatic changes of the hydrophilic/hydrophobic surface were observed by investigating the variation of the advancing contact angles.

Hydrophobic effect

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NMR and X-ray spectroscopy of sodium-silicon clathrates

Article Abstract:

The (super 23)Na and (super 29)Si NMR spectra of the sodium-silicon clathrate materials Na(sub 8)Si(sub 46) and Na(sub x)Si(sub 136) are studied in detail. NMR, XPS and XANES results showed an interaction between Na atom and the Si framework of the clathrates.

Sodium, Sodium & Sodium Compounds, Nuclear magnetic resonance spectroscopy, X-ray spectroscopy, Thermal properties, Clathrate compounds, NMR spectroscopy

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