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Regensburg 2019 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 19: Poster Monday: Organic Molecules on Inorganic Surfaces

O 19.3: Poster

Montag, 1. April 2019, 17:45–20:00, Poster F

Scanning Tunneling Microscopy Study of Phthalocyanine Family Molecule with Reactive Moiety of Thiadiazol: Cobalt tetrakis (1,2,5-thiadiazole) porphyrazines(CoTTDPz) adsorption on Au(111) — •Yu Wang1,3, Jie Hou1,3, Kunio Awaga2, and Tadahiro Komeda31Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki-Aza-Aoba, Aoba-Ku, Sendai, Japan — 2Department of Chemistry & Research Center for Materials Science, Nagoya University, Chikusa-ku, Nagoya, Japan — 3Institute of Multidisciplinary Research for Advanced Materials (IMRAM, Tagen), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai, Japan

Metal-phthalocyanine(MPc) has been intensively studied in recent decades not only for its chemical and thermal stability but also due to tunable properties through using various center metal atoms. Here we report a LT-STM study of Pc family molecule: CoTTDPz, the terminal of ligand is S-N instead of carbon in Pc, indicating a strong lateral interaction between molecules. CoTTDPz is deposited on Au(111) substrate using thermal sublimation method, multiple molecule layers from 1st to 3rd can be distinguished from STM images. First layer molecules have two orientations which is different with previous works for MPc, noted that first layer molecules had a unique orientation. In second layer, CoTTDPz shows two types of tilted configurations which can be judged from image and STS. Third layer molecules have two similar configurations absorbed on type1 and type2 of second layer, which has never been reported on Pc molecules.

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