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Organic molecular beam deposition of oligophenyls on Au(111): A study by x-ray absorption spectroscopy

Organic molecular beam deposition of oligophenyls on Au(111): A study by x-ray absorption spectroscopy
chair: Müllegger, S. / Hänel, K. / Strunskus, T. / Wöll, Ch. / Winkler, A. (2006)

place: ChemPhysChem. 7 (2006), 2552-2558

Date: 2006

Müllegger, S. / Hänel, K. / Strunskus, T. / Wöll, Ch. / Winkler, A. (2006): „Organic molecular beam deposition of oligophenyls on Au(111): A study by x-ray absorption spectroscopy“. In: ChemPhysChem. 7 (2006), 2552-2558

Abstract

Near-edge X-ray absorption fine structure (NEXAFS) spectroscopy has been applied to reveal the molecular arrangement of ultrathin oligophenyl films [p-quaterphenyl (4P) and p-hexaphenyl (6P)] on Au(111). In the half-monolayer films the molecules lie flat on the surface but still have a considerable inter-ring twist of 30°-40°, similar to the gas-phase conformation.

In the saturated monolayer film the second half of the molecules is side-tilted by an angle of less than 66° with respect to the surface. This arrangement is already similar to that in bulk net planes of thicker films parallel to the surface, that is, the 4P(211) and 6P(21-3) planes, respectively.


 

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