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Diamide-based fullerosteroidal and disteroidal [2] rotaxanes: solvent-induced macrocycle translocation and/or unthreading

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2016
2027.pdf (1019.Kb)
Authors
Pavlovic, Radoslav Z
Bjelaković, Mira
Milić, Dragana
Article (Published version)
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Abstract
The synthesis, characterization and behaviour of two novel Leigh-type amide [2]rotaxanes are reported. NMR study shows that fullerosteroidal and disteroidal rotaxanes occur in a peptide co-conformation in CDCl3. [D-6]DMSO induces fast unthreading of disteroidal rotaxane, which includes steroid co-conformers as intermediates. On the other hand, fullerosteroidal rotaxane undergoes predominantly a shuttling process occupying the stacked co-conformation, whereas unthreading is very slow in comparison with its disteroidal analogue (25% after 7 days). Moreover, organogelation and self-organization properties were studied. It was found that disteroidal rotaxane is an organogelator and its SEM image shows that it forms a branched film-like network in a PhMe/EtOAc 1 : 1 mixture.
Source:
RSC Advances, 2016, 6, 43, 37246-37253
Publisher:
  • Royal Soc Chemistry, Cambridge
Projects:
  • Design, synthesis and investigations of fullerene based nanomolecular machines (RS-172002)

DOI: 10.1039/c6ra03872g

ISSN: 2046-2069

WoS: 000374561300119

Scopus: 2-s2.0-84968807628
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/2029
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