Unoccupied electronic structure of phthalocyanine films

Rocco, Maria Luiza; Frank, K.-H.; Yannoulis, P.; Koch, Ernst-Eckhard

doi:10.1063/1.458918

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Unoccupied electronic structure of phthalocyanine films

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Rocco, Maria Luiza
Fritz Haber Institute, Max Planck Society;

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Frank, K.-H.
Fritz Haber Institute, Max Planck Society;

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Yannoulis, P.
Fritz Haber Institute, Max Planck Society;

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Koch, Ernst-Eckhard
Fritz Haber Institute, Max Planck Society;

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Citation

Rocco, M. L., Frank, K.-H., Yannoulis, P., & Koch, E.-E. (1990). Unoccupied electronic structure of phthalocyanine films. The Journal of Chemical Physics, 93(9), 6859-6864. doi:10.1063/1.458918.

Cite as: http://hdl.handle.net/21.11116/0000-0007-1AE0-F

Abstract

The unoccupied molecular orbitals of metal‐free phthalocyanine (H₂PC), nickel‐phthalocyanine (NiPC), and copper‐phthalocyanine (CuPC) adsorbed on single crystal surfaces have been studied by inverse photoemission spectroscopy (IPES) and near‐edge x‐ray absorption spectroscopy (NEXAFS). The features observed in the experimental data are assigned by reference to molecular orbital calculations. Carbon and nitrogen 1s NEXAFS measurements of NiPC adsorbed on Cu(110) surface indicates that the phthalocyanine molecular planes are parallel to the surface. X‐ray absorption data recorded at the Ni L_III and L_II edges show that the unoccupied Ni 3d level is located in the plane of the phthalocyanine rings.