Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5424319 | Surface Science | 2009 | 7 Pages |
Abstract
The self-assembly of Ï-ferrocenylalkanethiols (FcCnSH) with different alkyl-spacer lengths on Au(1Â 1Â 1) substrates has been studied by scanning tunneling microscopy (STM). Upon deposition at room temperature FcCnSH molecules tend to form multilayers, while by thermal treatment monolayer formation, a rearrangement of the molecules and the formation of ordered domains is achieved. The surface structure of the resulting full coverage self-assembled monolayers is resolved with molecular resolution by STM. The ordered monolayer structure of Ï-ferrocenylpropanethiol is discussed in comparison with its bulk crystal structure, derived from single crystal X-ray analysis. Based on these results a monolayer structure of Ï-ferrocenylalkanethiols with longer alkyl chains closely related to the bulk crystal structure of the shorter alkyl-spacer derivates is suggested. Our results provide detailed insight into the self-assembly of FcCnSH on gold substrates.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Lars Müller-Meskamp, Silvia Karthäuser, Rainer Waser, Melanie Homberger, Yutian Wang, Ulli Englert, Ulrich Simon,