Highly Stable Organic Modification of Si(111) Surfaces: Towards Reacting Si with Further Functionalities while Preserving the Desirable Chemical Properties of Full Si−C Atop Site Terminations

Si(111) surfaces modified by covalent Si-CH=CH-CH3 functionality, with no intervening oxide, show coverage of all atop Si sites and superior chemical stability in ambient conditions and water, as compared with molecules that form nearly full coverage (e.g., Si-C C-CH3 and Si-CH3 surfaces).