Van der Waals Solids from Self-Assembled Nanoscale Building Blocks

Bonnie Choi, Jaeeun Yu, Daniel W. Paley, M. Tuan Trinh, Maria V. Paley, Jessica M. Karch, Andrew C. Crowther, Chul-Ho Lee, Roger A. Lalancette, Xiaoyang Zhu, Philip Kim, Michael L. Steigerwald, Colin Nuckolls, Xavier Roy

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Traditional atomic van der Waals materials such as graphene, hexagonal boron-nitride, and transition metal dichalcogenides have received widespread attention due to the wealth of unusual physical and chemical behaviors that arise when charges, spins, and vibrations are confined to a plane. Though not as widespread as their atomic counterparts, molecule-based two-dimensional (2D) layered solids offer significant benefits; their structural flexibility will enable the development of materials with tunable properties. Here we describe a layered van der Waals solid self-assembled from a structure-directing building block and C60 fullerene. The resulting crystalline solid contains a corrugated monolayer of neutral fullerenes and can be mechanically exfoliated. The absorption spectrum of the bulk solid shows an optical gap of 390 ± 40 meV that is consistent with thermal activation energy obtained from electrical transport measurement. We find that the dimensional confinement of fullerenes significantly modulates the optical and electronic properties compared to the bulk solid.

Original languageEnglish
Pages (from-to)1445-1449
Number of pages5
JournalNano Letters
Volume16
Issue number2
DOIs
Publication statusPublished - 2016 Feb 10

Keywords

  • fullerene
  • molecular clusters
  • Self-assembly
  • two-dimensional materials

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

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  • Cite this

    Choi, B., Yu, J., Paley, D. W., Trinh, M. T., Paley, M. V., Karch, J. M., Crowther, A. C., Lee, C-H., Lalancette, R. A., Zhu, X., Kim, P., Steigerwald, M. L., Nuckolls, C., & Roy, X. (2016). Van der Waals Solids from Self-Assembled Nanoscale Building Blocks. Nano Letters, 16(2), 1445-1449. https://doi.org/10.1021/acs.nanolett.5b05049