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- W2000991954 abstract "Atomic force microscopy and synchrotron radiation (SR) spectroscopy have been used to study the wetting behavior and electronic structure of thin films of a novel organometallic cluster--[BuSn(O)OC(O)Fc]6 (Fc = ferrocenyl)--on silicon substrates. This cluster comprises six ferrocene units connected to a stannoxane central core--an iron wheel on a tin drum (V. Chandrasekhar; et al. Angew. Chem., Int. Ed. 2000, 39, 1833). Thin films spin-cast onto native oxide-terminated silicon readily dewet the substrate. We have utilized advanced image analysis techniques based on Minkowski functionals to provide a detailed quantitative analysis of the morphology of the stannoxane overlayers. This analysis shows that the dewetting patterns are rather far removed from those expected to arise from a simple Poisson distribution of centers, and we discuss the implications of this finding in terms of nucleated and spinodal dewetting. Variations in both the surface roughness and the in-plane correlation length have been followed as a function of annealing time to probe the surface dewetting dynamics. SR valence band photoemission illustrates that the highest occupied molecular orbital (HOMO) of the cluster is found 2 eV below the Fermi level. Fe 2p --> 3d and Sn 3d --> 5p resonant photoemission spectroscopy have been used to enhance the cross sections of the partial density of states associated with the Fe and Sn atoms. Sn atoms make a large contribution to the HOMO of the cluster, whereas the Fe atoms are associated with an electronic environment seemingly very similar to that in the parent ferrocene molecule." @default.
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- W2000991954 date "2004-06-22" @default.
- W2000991954 modified "2023-10-16" @default.
- W2000991954 title "Iron Wheels on Silicon: Wetting Behavior and Electronic Structure of Adsorbed Organostannoxane Clusters" @default.
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- W2000991954 doi "https://doi.org/10.1021/la036414y" @default.
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