Supramolecular chirality at the air/water interface [Invited]

Second Harmonic Generation (SHG) was used to study the non-linear optical properties of a two-dimensional film formed by the achiral amphiphilic compound 5-(octadecyloxy)-2-(2-thiazolylazo) phenol (TARC18) at the air-water interface. The S-polarized SHG intensity was measured as a function of the in...

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Bibliographic Details
Published in:Optical materials express 2011-05, Vol.1 (1), p.17-26
Main Authors: Benichou, Emmanuel, Derouet, Arnaud, Russier-Antoine, Isabelle, Jonin, Christian, Lascoux, Noëlle, Liu, Minghua, Brevet, Pierre-François
Format: Article
Language:English
Subjects:
Aggregates
Chirality
Compression tests
Optical properties
Origins
Second harmonic generation
Surface pressure
Two dimensional
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Summary:Second Harmonic Generation (SHG) was used to study the non-linear optical properties of a two-dimensional film formed by the achiral amphiphilic compound 5-(octadecyloxy)-2-(2-thiazolylazo) phenol (TARC18) at the air-water interface. The S-polarized SHG intensity was measured as a function of the incident fundamental wave polarization angle during the monolayer compression. The method was applied to follow the emergence of chirality during the filmcompression and at constant surface pressure. The formation of molecular aggregates revealing supramolecular chirality was then demonstrated. It was shown furthermore that the origin of chirality was dominated by the magnetic contributions.
ISSN:2159-3930
2159-3930
DOI:10.1364/OME.1.000017