Promoting Spontaneous Second Harmonic Generation through Organogelation

Ana-Belén Marco (1) , Fatima Aparicio (2) , Lara Faour (2) , Konstantinos Iliopoulos (2) , Yohann Morille (2) , Magali Allain (2) , Santiago Franco (1) , Raquel Andreu (1) , Bouchta Sahraoui (2) , Denis Gindre (2) , David Canevet (2) , Marc Sallé (2)

1 ICMA-CSIC - Instituto de Ciencia de Materiales de Aragón [Saragoza, España]
2 MOLTECH-Anjou

An organogelator based on the Disperse Red NLO-phore was synthesized according to a simple and efficient three-step procedure. The supramolecular gel organization leads to xerogels which display a spontaneous second harmonic generation (SHG) response without any need for pre-processing and this SHG activity appears stable over several months. These findings, based on an intrinsic structural approach are supported by favorable intermolecular supramolecular interactions, which promote a locally non-centrosymmetric NLO-active organization. This is in sharp contrast with most materials designed for SHG purposes, which generally require the use of expensive or heavy-to-handle external techniques for managing the dipoles alignment.

Domaines: Chimie; Optique [physics.optics]

Ana-Belén Marco, Fatima Aparicio, Lara Faour, Konstantinos Iliopoulos, Yohann Morille, et al.. Promoting Spontaneous Second Harmonic Generation through Organogelation. Journal of the American Chemical Society, 2016, 138 (29), pp.9025-9028. ⟨10.1021/jacs.6b04554⟩. ⟨hal-01391731⟩