Evidence of nanotubular self-organization in solution and solid states of heterochiral cyclo 1:1 [α/α-N(α)-Bn-hydrazino]mers series.
Identifieur interne : 000085 ( France/Analysis ); précédent : 000084; suivant : 000086Evidence of nanotubular self-organization in solution and solid states of heterochiral cyclo 1:1 [α/α-N(α)-Bn-hydrazino]mers series.
Auteurs : Ralph-Olivier Moussodia [France] ; Samir Acherar [France] ; Eugénie Romero [France] ; Claude Didierjean [France] ; Brigitte Jamart-Grégoire [France]Source :
- The Journal of organic chemistry [ 1520-6904 ] ; 2015.
Descripteurs français
- KwdFr :
- MESH :
- analogues et dérivés : Alanine.
- synthèse chimique : Alanine.
- Alanine, Cristallographie aux rayons X, Cyclisation, Modèles moléculaires, Nanotubes, Solutions.
English descriptors
- KwdEn :
- MESH :
- chemical , analogs & derivatives : Alanine.
- chemical , chemical synthesis : Alanine.
- chemical , chemistry : Alanine.
- chemistry : Nanotubes.
- Crystallography, X-Ray, Cyclization, Models, Molecular, Solutions.
Abstract
The cyclization of heterochiral 1:1 [α/α-N(α)-Bn-hydrazino]mers leads to the corresponding cyclotetramer and cyclohexamer 3 and 4. X-ray crystallographic analysis of 3 unveils its ability to self-assemble into nanotubular structures. Further experiments conducted in the solid state through SEM analyses demonstrate the capability of 3 and 4 to form aerogels consisting of a network of nontwisted fibers, thus confirming the presence of self-organization within this series of mixed-hydrazinopeptides. Subsequent FTIR and NMR studies demonstrate the presence of an equilibrium between monomeric (intramolecular H-bonds) and nanotubular (intermolecular H-bonds) forms in solution. This equilibrium can be modified by varying the solvent.
DOI: 10.1021/jo502684g
PubMed: 25734802
Affiliations:
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pubmed:25734802Le document en format XML
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<front><div type="abstract" xml:lang="en">The cyclization of heterochiral 1:1 [α/α-N(α)-Bn-hydrazino]mers leads to the corresponding cyclotetramer and cyclohexamer 3 and 4. X-ray crystallographic analysis of 3 unveils its ability to self-assemble into nanotubular structures. Further experiments conducted in the solid state through SEM analyses demonstrate the capability of 3 and 4 to form aerogels consisting of a network of nontwisted fibers, thus confirming the presence of self-organization within this series of mixed-hydrazinopeptides. Subsequent FTIR and NMR studies demonstrate the presence of an equilibrium between monomeric (intramolecular H-bonds) and nanotubular (intermolecular H-bonds) forms in solution. This equilibrium can be modified by varying the solvent. </div>
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