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New nano-sized hexameric molecular capsule

Date:
November 10, 2017
Source:
University of Jyväskylä
Summary:
Halonium ions used in a new study are well-known reaction intermediates and halogenating reagents in synthesis, but now they have been used as robust and stable structural units in molecular nanotechnology, report scientists.
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Halonium ions used in this study, are well-known reaction intermediates and halogenating reagents in synthesis, but now they have been used as robust and stable structural units in molecular nanotechnology.

Academy Professor Kari Rissanen and Dr. Lotta Turunen at the University of Jyväskylä together with research groups from Freie Universität Berlin, Germany, Professor Christoph A. Schalley and M.Sc. Ulrike Warzok, have published a study on a new nano-sized hexameric molecular capsule based on a completely new concept. Construction of nano-sized structures by exploiting non-covalent interactions has received considerable attention due to their potential applications in molecular nanotechnology. Gigantic > 4 nm nanospheres have been constructed using the metal-ligand coordination bond, while smaller supramolecular capsules have been obtained mainly via hydrogen bonding. Halonium ions used in this study, are well-known reaction intermediates and halogenating reagents in synthesis, but now they have been used as robust and stable structural units in molecular nanotechnology.

Application-oriented investigations

It is not easy to synthesize capsules. The present work presents a procedure where a carefully designed molecule is first assembled to a hollow nano-sized capsule through 12 silver ions. Using a simple cation-exchange reaction, the 12 silver ions are exchanged to 12 iodonium ions resulting in a halogen-bonded capsule with 4.5 nm diameter. These results create a basis of halonium ion-based nanotechnology allowing the construction of structurally precise and robust gigantic nanomolecules.


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Materials provided by University of Jyväskylä. Note: Content may be edited for style and length.


Journal Reference:

  1. Lotta Turunen, Ulrike Warzok, Christoph A. Schalley, Kari Rissanen. Nano-sized I 12 L 6 Molecular Capsules Based on the [N⋅⋅⋅I ⋅⋅⋅N] Halogen Bond. Chem, 2017; 3 (5): 861 DOI: 10.1016/j.chempr.2017.08.010

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University of Jyväskylä. "New nano-sized hexameric molecular capsule." ScienceDaily. ScienceDaily, 10 November 2017. <www.sciencedaily.com/releases/2017/11/171110084522.htm>.
University of Jyväskylä. (2017, November 10). New nano-sized hexameric molecular capsule. ScienceDaily. Retrieved May 19, 2024 from www.sciencedaily.com/releases/2017/11/171110084522.htm
University of Jyväskylä. "New nano-sized hexameric molecular capsule." ScienceDaily. www.sciencedaily.com/releases/2017/11/171110084522.htm (accessed May 19, 2024).

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