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2012-02-22

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/127899

Chiral-symmetry selection in soft monolayers under vortical flow

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Abstract

Herein, we report and interpret a new chiral-selection phenomenon in the orientational ordering of soft-assembled domains that arise spontaneously in Langmuir monolayers of an azobenzene derivative at the air/water interface. The orientational chirality of isolated sub-millimeter domains was unambiguously assessed by optical microscopy. The selection process, quantified by using an enantiomeric excess parameter, was controlled by stirring the aqueous subphase. We have studied the dependence of this process on stirring rate and handedness, stirring time, temperature, and on the initial state of the monolayer. The influence of the concomitant cis/trans isomerization on the reported chiral-selection process is also discussed.

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https://doi.org/10.1002/chem.201102358

Subject

Química de superfícies, Compostos azoics, Quiralitat

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Surface chemistry, Azo compounds, Chirality

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Articles publicats en revistes (Ciència dels Materials i Química Física)
Articles publicats en revistes (Química Inorgànica i Orgànica)

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PETIT GARRIDO, Núria, et al. Chiral-symmetry selection in soft monolayers under vortical flow. Chemistry-A European Journal. 2012. Vol. 18, num. 13, pags. 3975-3980. ISSN 0947-6539. [consulted: 10 of October of 2026]. Available at: https://hdl.handle.net/2445/127899

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