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A one-dimensional high-order commensurate phase of tilted molecules

Abstract : We report on the formation of a high-order commensurate (HOC) structure of 5,14-dihydro-5,7,12,14-tetraazapentacene (DHTAP) molecules on the highly corrugated Cu(110)–(2 × 1)O surface. Scanning tunnelling microscopy shows that the DHTAP molecules form a periodic uniaxial arrangement in which groups of seven molecules are distributed over exactly nine substrate lattice spacings along the [[1 with combining macron]10] direction. DFT-calculations reveal that this peculiar arrangement is associated with different tilting of the seven DHTAP molecules within the quasi one-dimensional HOC unit cell. The orientational degree of freedom thus adds a new parameter, which can efficiently stabilize complex molecular structures on corrugated surfaces.
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https://hal-amu.archives-ouvertes.fr/hal-03736825
Contributor : Conrad Becker Connect in order to contact the contributor
Submitted on : Tuesday, September 27, 2022 - 12:19:45 PM
Last modification on : Friday, November 18, 2022 - 9:38:04 AM

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Anthony Thomas, Thomas Leoni, Olivier Siri, Conrad Becker, Martin Unzog, et al.. A one-dimensional high-order commensurate phase of tilted molecules. Physical Chemistry Chemical Physics, 2022, 24 (16), pp.9118-9122. ⟨10.1039/d2cp00437b⟩. ⟨hal-03736825⟩

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