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Al13− and B@Al12− superatoms on a molecularly decorated substrate

Author

Listed:
  • Masahiro Shibuta

    (Keio University)

  • Tomoya Inoue

    (Keio University)

  • Toshiaki Kamoshida

    (Keio University)

  • Toyoaki Eguchi

    (Tohoku University)

  • Atsushi Nakajima

    (Keio University
    Keio University)

Abstract

Aluminum nanoclusters (Aln NCs), particularly Al13− (n = 13), exhibit superatomic behavior with interplay between electron shell closure and geometrical packing in an anionic state. To fabricate superatom (SA) assemblies, substrates decorated with organic molecules can facilitate the optimization of cluster–surface interactions, because the molecularly local interactions for SAs govern the electronic properties via molecular complexation. In this study, Aln NCs are soft-landed on organic substrates pre-deposited with n-type fullerene (C60) and p-type hexa-tert-butyl-hexa-peri-hexabenzocoronene (HB-HBC, C66H66), and the electronic states of Aln are characterized by X-ray photoelectron spectroscopy and chemical oxidative measurements. On the C60 substrate, Aln is fixed to be cationic but highly oxidative; however, on the HB-HBC substrate, they are stably fixed as anionic Aln− without any oxidations. The results reveal that the careful selection of organic molecules controls the design of assembled materials containing both Al13− and boron-doped B@Al12− SAs through optimizing the cluster–surface interactions.

Suggested Citation

  • Masahiro Shibuta & Tomoya Inoue & Toshiaki Kamoshida & Toyoaki Eguchi & Atsushi Nakajima, 2022. "Al13− and B@Al12− superatoms on a molecularly decorated substrate," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29034-9
    DOI: 10.1038/s41467-022-29034-9
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    References listed on IDEAS

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    1. Tetsuya Kambe & Naoki Haruta & Takane Imaoka & Kimihisa Yamamoto, 2017. "Solution-phase synthesis of Al13 − using a dendrimer template," Nature Communications, Nature, vol. 8(1), pages 1-7, December.
    2. Vikas Chauhan & Arthur C. Reber & Shiv N. Khanna, 2018. "Strong lowering of ionization energy of metallic clusters by organic ligands without changing shell filling," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
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