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Spectroscopic Characterization of the Bonding, Orientation, and Coverage of Copper Tetraazaphthalocyanine Monolayer Films on SiO2 Surfaces
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
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2000 (English)In: The Journal of Physical Chemistry B, Vol. 104, no 45, 10627-34 p.Article in journal (Refereed) Published
Abstract [en]

Self-assembled monolayer films of a metallotetraazaphthalocyanine were prepared using two different reaction conditions. The films were characterized by ellipsometry, AFM, electronic absorption spectroscopy, semiempirical MO calculations, core-level XPS, and projection of a calculated structure of the chromophore onto a surface to obtain its silhouette area for comparison with surface concentration from absorption spectroscopy. A denser packing of the chromophores is found in the SAM film prepared with bromonaphthalene at 250 C as compared with the film from the more polar solvent DMF at 120 C. Data is consistent with an almost vertical orientation of the chromophores in the former film. A different number of bonds connecting the chromophore with the coupling molecule is suggested as an explanation to differences in the absorption bands for the two films.

Place, publisher, year, edition, pages
2000. Vol. 104, no 45, 10627-34 p.
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Chemical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-8500DOI: 10.1021/jp002634yOAI: oai:DiVA.org:umu-8500DiVA: diva2:148171
Available from: 2008-02-25 Created: 2008-02-25 Last updated: 2013-03-14Bibliographically approved

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Edlund, UlfEliasson, BertilShchukarev, Andrey
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