Thursday, February 7, 2013

Surface functionalization

Dynamics of Decanethiol Self-assembled Monolayers on Au(111) Studied by Time-resolved Scanning Tunneling Microscopy
Hairong Wu, Kai Sotthewes, Avijit Kumar, G. Julius Vancso, Peter Schön, and Harold J.W. Zandvliet 

In this paper, the dynamics of four ordered and one disordered phases of decanethiol on Au(111) are investigated.  From STM, I-V and I-t measurements, the authors conclude that the beta, gamma, chi* and the disordered phases all exhibit rich dynamics, but in particular, for the lying-down beta phase, the gold-thiolate complexes on the surface diffuse on the timescale of ~0.1 ms, and in the disordered phase, the alkyl tails flip. 

Abstract Image

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