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Adsorption behavior of tin phthalocyanine onto the (110) face of rutile TiO₂.

ABSTRACT: The adsorption behavior of tin phthalocyanine (SnPc) molecules on rutile TiO₂(110) was studied by scanning tunneling microscopy (STM). Low-temperature STM measurements of single molecules reveal the coexistence of two conformations of molecules on the TiO₂ surface. Density functional theory-based simulations (DFT) indicate that the difference originates from the position of the tin atom protruding from the molecule plane. The irreversible switching of Sn-up molecules into the Sn-down conformation was observed either after sample annealing at 200 °C or as a result of tip-induced manipulation. Room-temperature measurements conducted for a coverage of close to a monolayer showed no tendency for molecular arrangement.

SUBMITTER: Bodek L

PROVIDER: S-EPMC7277932 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Adsorption behavior of tin phthalocyanine onto the (110) face of rutile TiO2.

Bodek Lukasz L Engelund Mads M Cebrat Aleksandra A Such Bartosz B

Beilstein journal of nanotechnology 20200526

The adsorption behavior of tin phthalocyanine (SnPc) molecules on rutile TiO2(110) was studied by scanning tunneling microscopy (STM). Low-temperature STM measurements of single molecules reveal the coexistence of two conformations of molecules on the TiO2 surface. Density functional theory-based simulations (DFT) indicate that the difference originates from the position of the tin atom protruding from the molecule plane. The irreversible switching of Sn-up molecules into t ...[more]

PMID: 32551207

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