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Magnetic control of self-assembly and disassembly in organic materials

Author

Listed:
  • You-jin Jung

    (Yonsei University)

  • Hyoseok Kim

    (Yonsei University)

  • Hae-Kap Cheong

    (Korea Basic Science Institute)

  • Yong-beom Lim

    (Yonsei University)

Abstract

Because organic molecules and materials are generally insensitive or weakly sensitive to magnetic fields, a certain means to enhance their magnetic responsiveness needs to be exploited. Here we show a strategy to amplify the magnetic responsiveness of self-assembled peptide nanostructures by synergistically combining the concepts of perfect α-helix and rod-coil supramolecular building blocks. Firstly, we develop a monomeric, nonpolar, and perfect α-helix (MNP-helix). Then, we employ the MNP-helix as the rod block of rod-coil amphiphiles (rod-coils) because rod-coils are well-suited for fabricating responsive assemblies. We show that the self-assembly processes of the designed rod-coils and disassembly of rod-coil/DNA complexes can be controlled in a magnetically responsive manner using the relatively weak magnetic field provided by the ordinary neodymium magnet [0.07 ~ 0.25 Tesla (T)]. These results demonstrate that magnetically responsive organic assemblies usable under practical conditions can be realized by using rod-coil supramolecular building blocks containing constructively organized diamagnetic moieties.

Suggested Citation

  • You-jin Jung & Hyoseok Kim & Hae-Kap Cheong & Yong-beom Lim, 2023. "Magnetic control of self-assembly and disassembly in organic materials," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38846-2
    DOI: 10.1038/s41467-023-38846-2
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