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Title: Interfacial chiral selection by bulk species
Author: Dong, Hua
Ignés i Mullol, Jordi
Claret Bonet, Josep
Pérez Muñoz, Lourdes
Pinazo Gassol, Aurora
Sagués i Mestre, Francesc
Keywords: Quiralitat
Química de superfícies
Surface chemistry
Amino acids
Issue Date: 13-May-2014
Publisher: Wiley-VCH
Abstract: A chiral selection process in a self-assembled soft monolayer of an achiral amphiphile as a consequence of its interaction with chiral species dissolved in the aqueous subphase, is reported. The extent of the chiral selection is statistically measured in terms of the enantiomorphic excess of self-assembled submillimeter domains endowed with well-defined orientational chirality that is unambiguously resolved using optical microscopy. Our results show that the emergence of chirality is mediated by electrostatic interactions and significantly enhanced by hydrophobic effects. This chiral chemical effect can be suppressed and even reversed by opposing a macroscopic physical influence, such as vortical stirring. This result gives evidence for the crucial role of hydrodynamic effects in supramolecular aggregation.
Note: Versió postprint del document publicat a:
It is part of: Chemistry-A European Journal, 2014, vol. 20, num. 24, p. 7396
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ISSN: 0947-6539
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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