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Coronene and phthalocyanine trapping efficiency of a two-dimensional Kagomé host-nanoarchitecture

Yi Wang 1 Xinrui Miao 1 Wenli Deng 1 Romain Brisse 2 Bruno Jousselme 2 Fabien Silly 3 
2 LICSEN - Laboratoire Innovation en Chimie des Surfaces et NanoSciences
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
3 LEPO - Laboratoire d'Electronique et nanoPhotonique Organique
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
Abstract : The trapping of coronene and zinc phthalocyanine (ZnPc) molecules at low concentration by a two-dimensional self-assembled nanoarchitecture of a push–pull dye is investigated using scanning tunneling microscopy (STM) at the liquid–solid interface. The push–pull molecules adopt an L-shaped conformation and self-assemble on a graphite surface into a hydrogen-bonded Kagomé network with porous hexagonal cavities. This porous host-structure is used to trap coronene and ZnPc guest molecules. STM images reveal that only 11% of the Kagomé network cavities are filled with coronene molecules. In addition, these guest molecules are not locked in the host-network and are desorbing from the surface. In contrast, STM results reveal that the occupancy of the Kagomé cavities by ZnPc evolves linearly with time until 95% are occupied and that the host structure cavities are all occupied after few hours.
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https://hal-cea.archives-ouvertes.fr/cea-03592170
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Submitted on : Tuesday, March 1, 2022 - 9:58:29 AM
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Yi Wang, Xinrui Miao, Wenli Deng, Romain Brisse, Bruno Jousselme, et al.. Coronene and phthalocyanine trapping efficiency of a two-dimensional Kagomé host-nanoarchitecture. Nanomaterials, MDPI, In press, 12 (5), pp.775. ⟨10.3390/nano12050775⟩. ⟨cea-03592170⟩

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