Interplay between Structural and Electronic Properties in 1,4,5,8-Naphthalenetetracarboxylic Dianhydride Films on Cu(100) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Physical Chemistry C Année : 2017

Interplay between Structural and Electronic Properties in 1,4,5,8-Naphthalenetetracarboxylic Dianhydride Films on Cu(100)

Yongfeng Tong
  • Fonction : Auteur
Javier Fuhr
  • Fonction : Auteur
Maria Luz Martiarena
  • Fonction : Auteur
Hanna Enriquez
  • Fonction : Auteur
Karine Chaouchi
  • Fonction : Auteur
Stefan Kubsky
  • Fonction : Auteur
Azzedine Bendounan

Résumé

Using various surface science techniques, we have studied the properties of 1,4,5,8naphthalenetetracarboxylic dianhydride (NTCDA) thin films on a Cu(100) surface. STM investigations suggest the high mobility of the NTCDA molecules over the surface, leading to the formation of large and well-ordered islands. In line with LEED results, two typical domains with different molecular orientations and brick-wall-like structure are revealed in the STM images. On the other hand, a fingerprint of covalent bonding at the NTCDA/Cu interface is obtained from the core level shifts measured by high-resolution XPS. As a consequence, a charge transfer process develops at the interface and enables a total filling of the π*-like lowest unoccupied orbital, which is the signature of the semiconductor character of the NTCDA layer. The carbon K-edge NEXAFS data confirm the chemisorption nature of the interaction between NTCDA and the Cu(100) surface and indicate an evolution from a flat-lying orientation of NTCDA at 1 ML to a straight-up orientation in a thick layer.
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Dates et versions

hal-04382312 , version 1 (09-01-2024)

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Citer

Yongfeng Tong, Javier Fuhr, Maria Luz Martiarena, Hamid Oughaddou, Hanna Enriquez, et al.. Interplay between Structural and Electronic Properties in 1,4,5,8-Naphthalenetetracarboxylic Dianhydride Films on Cu(100). Journal of Physical Chemistry C, 2017, 121 (1), pp.5050 - 5057. ⟨10.1021/acs.jpcc.6b12050⟩. ⟨hal-04382312⟩
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