Second harmonic generation at liquid interface: molecular organization, supramolecular assemblies, and chirality

Emmanuel Benichou; Pierre-Marie Gassin; Gaëlle Gassin-Martin; Aurélie Bruyère; Isabelle Russier-Antoine; Christian Jonin; Olivier Diat; Pierre-François Brevet

doi:10.1117/12.2038061

7 March 2014 Second harmonic generation at liquid interface: molecular organization, supramolecular assemblies, and chirality

Emmanuel Benichou, Pierre-Marie Gassin, Gaëlle Gassin-Martin, Aurélie Bruyère, Isabelle Russier-Antoine, Christian Jonin, Olivier Diat, Pierre-François Brevet

Author Affiliations +

Proceedings Volume 8983, Organic Photonic Materials and Devices XVI; 898307 (2014) https://doi.org/10.1117/12.2038061
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

Second Harmonic Generation (SHG) was used to study the optical properties of molecular films formed at liquid interfaces (air-water or dodecane-water interfaces). The technique was applied to a two-dimensional film of hemicyanine molecules: dye (4-(4-dihexadecylaminostyryl)-N-methylpyridinium iodide) (DiA) and 4-(4-(diethylamino)styryl)-Nmethylpyridinium iodide (sDiA). First, at the air-water interface, the SHG intensity was measured as a function of the incident fundamental and outgoing harmonic wave polarization. The orientation of the molecules was determined by the analysis of the polarization plots. Secondly, the adsorption of sDiA at the dodecane-water interface was characterized by the SHG technique. Finally, in the case of DiA molecules, the formation of aggregates at the air-water interface was monitored by the analysis of SHG intensity fluctuations.

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Emmanuel Benichou, Pierre-Marie Gassin, Gaëlle Gassin-Martin, Aurélie Bruyère, Isabelle Russier-Antoine, Christian Jonin, Olivier Diat, and Pierre-François Brevet "Second harmonic generation at liquid interface: molecular organization, supramolecular assemblies, and chirality", Proc. SPIE 8983, Organic Photonic Materials and Devices XVI, 898307 (7 March 2014); https://doi.org/10.1117/12.2038061

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