Symmetry breaking and birth of chirality in molecular film at the air/water interface: an approach with nonlinear optics

A. Bruyère; E. Benichou; L. Guy; A. Bensalah-Ledoux; S. Guy; P. F. Brevet

doi:10.1117/12.2079084

16 March 2015 Symmetry breaking and birth of chirality in molecular film at the air/water interface: an approach with nonlinear optics

A. Bruyère, E. Benichou, L. Guy, A. Bensalah-Ledoux, S. Guy, P. F. Brevet

Author Affiliations +

Proceedings Volume 9360, Organic Photonic Materials and Devices XVII; 936014 (2015) https://doi.org/10.1117/12.2079084
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

Second Harmonic Generation (SHG) was used to investigate the two enantiomers of a chiral bridged binaphthol derivative 1(+) and 1(-) at the air-water interface under lateral compression in a Langmuir trough. For each enantiomer, surface pressure and SH intensity were measured simultaneously during compression and decompression cycle of the molecular film. S polarized output SHG intensity as a function of the input polarization angle of the fundamental beam demonstrated the supramolecular origin for the chirality. The formation of 1(+) and 1(-) aggregates in the film was deduced from the non-vanishing SHG intensities collected for the 90° input and S output polarization angles.

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A. Bruyère, E. Benichou, L. Guy, A. Bensalah-Ledoux, S. Guy, and P. F. Brevet "Symmetry breaking and birth of chirality in molecular film at the air/water interface: an approach with nonlinear optics", Proc. SPIE 9360, Organic Photonic Materials and Devices XVII, 936014 (16 March 2015); https://doi.org/10.1117/12.2079084

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