Atomically precise single-crystal structures of electrically conducting 2D metal

Atomically precise single-crystal structures of electrically conducting 2D metal–organic frameworks. Dou, J., Arguilla, M. Q., Luo, Y., Li, J., Zhang, W., Sun, L., Mancuso, J. L., Yang, L., Chen, T., Parent, L. R., Skorupskii, G., Libretto, N. J., Sun, C., Yang, M. C., Dip, P. V., Brignole, E. J., Miller, J. T., Kong, J., Hendon, C. H., Sun, J., & Dincă, M. Nature Materials, 20(2):222–228, February, 2021.

Paper doi abstract bibtex

Electrically conducting 2D metal–organic frameworks (MOFs) have attracted considerable interest, as their hexagonal 2D lattices mimic graphite and other 2D van der Waals stacked materials. However, understanding their intrinsic properties remains a challenge because their crystals are too small or of too poor quality for crystal structure determination. Here, we report atomically precise structures of a family of 2D $π$-conjugated MOFs derived from large single crystals of sizes up to 200þinspace$μ$m, allowing atomic-resolution analysis by a battery of high-resolution diffraction techniques. A designed ligand core rebalances the in-plane and out-of-plane interactions that define anisotropic crystal growth. We report two crystal structure types exhibiting analogous 2D honeycomb-like sheets but distinct packing modes and pore contents. Single-crystal electrical transport measurements distinctively demonstrate anisotropic transport normal and parallel to the $π$-conjugated sheets, revealing a clear correlation between absolute conductivity and the nature of the metal cation and 2D sheet packing motif.

@article{Dou2021,
  abstract = {Electrically conducting 2D metal--organic frameworks (MOFs) have attracted considerable interest, as their hexagonal 2D lattices mimic graphite and other 2D van der Waals stacked materials. However, understanding their intrinsic properties remains a challenge because their crystals are too small or of too poor quality for crystal structure determination. Here, we report atomically precise structures of a family of 2D $\pi$-conjugated MOFs derived from large single crystals of sizes up to 200{\thinspace}$\mu$m, allowing atomic-resolution analysis by a battery of high-resolution diffraction techniques. A designed ligand core rebalances the in-plane and out-of-plane interactions that define anisotropic crystal growth. We report two crystal structure types exhibiting analogous 2D honeycomb-like sheets but distinct packing modes and pore contents. Single-crystal electrical transport measurements distinctively demonstrate anisotropic transport normal and parallel to the $\pi$-conjugated sheets, revealing a clear correlation between absolute conductivity and the nature of the metal cation and 2D sheet packing motif.},
  added-at = {2024-02-07T19:57:26.000+0100},
  author = {Dou, Jin-Hu and Arguilla, Maxx Q. and Luo, Yi and Li, Jian and Zhang, Weizhe and Sun, Lei and Mancuso, Jenna L. and Yang, Luming and Chen, Tianyang and Parent, Lucas R. and Skorupskii, Grigorii and Libretto, Nicole J. and Sun, Chenyue and Yang, Min Chieh and Dip, Phat Vinh and Brignole, Edward J. and Miller, Jeffrey T. and Kong, Jing and Hendon, Christopher H. and Sun, Junliang and Dinc{\u{a}}, Mircea},
  biburl = {https://www.bibsonomy.org/bibtex/2697b81a2bfd6b0cc10c0995bce19b825/cryoem_staff},
  day = 01,
  doi = {10.1038/s41563-020-00847-7},
  interhash = {09834de4bd039d6570d477f02247a74f},
  intrahash = {697b81a2bfd6b0cc10c0995bce19b825},
  issn = {1476-4660},
  journal = {Nature Materials},
  keywords = {2021},
  month = feb,
  number = 2,
  pages = {222--228},
  timestamp = {2024-02-07T19:58:45.000+0100},
  title = {Atomically precise single-crystal structures of electrically conducting 2D metal--organic frameworks},
  url = {https://doi.org/10.1038/s41563-020-00847-7},
  volume = 20,
  year = 2021
}

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