title: Huge electro-/photo-/acidoinduced second-order nonlinear contrasts from multiaddressable indolinooxazolodine.
abstract: In this work, linear and nonlinear optical properties of electro-/acido-/photoswitchable indolino[2,1-b]oxazolidine derivatives were investigated. The linear optical properties of the closed and open forms have been characterized by UV-visible and IR spectroscopies associated with DFT calculations. Nonlinear optical properties of the compounds have been obtained by ex situ and in situ hyper-Rayleigh experiments in solution. We show that protonated, oxidized, and irradiated open forms exhibit the same visible absorption and NLO features. In particular, the closed and open forms exhibit a huge contrast of the first hyperpolarizability with an enhancement factor of 40-45. Additionally, we have designed an original electrochemical cell that allows to monitor in situ the hyper-Rayleigh response upon electrical stimulus. We report notably a partial but good and reversible NLO contrast in situ during oxidation/reduction cycles. Thereby, indolinooxazolidine moieties are versatile trimodal switchable units which are very promising for applications in devices.
authors.affiliation: †Université de Bordeaux, Institut des Sciences Moléculaires, UMR 5255 CNRS, 351 Cours de la Libération, F-33405 Talence Cedex, France.
authors.forename: Flavie
authors.initials: F
authors.lastname: Bondu
authors.affiliation: ‡Laboratoire Moltech-Anjou, Université d'Angers, UMR 6200 CNRS, 2 Boulevard Lavoisier, F-49045 Angers Cedex, France.
authors.forename: Rachid
authors.initials: R
authors.lastname: Hadji
authors.affiliation: ‡Laboratoire Moltech-Anjou, Université d'Angers, UMR 6200 CNRS, 2 Boulevard Lavoisier, F-49045 Angers Cedex, France.
authors.forename: György
authors.initials: G
authors.lastname: Szalóki
authors.affiliation: ‡Laboratoire Moltech-Anjou, Université d'Angers, UMR 6200 CNRS, 2 Boulevard Lavoisier, F-49045 Angers Cedex, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Alévêque
authors.affiliation: ‡Laboratoire Moltech-Anjou, Université d'Angers, UMR 6200 CNRS, 2 Boulevard Lavoisier, F-49045 Angers Cedex, France.
authors.forename: Lionel
authors.initials: L
authors.lastname: Sanguinet
authors.affiliation: †Université de Bordeaux, Institut des Sciences Moléculaires, UMR 5255 CNRS, 351 Cours de la Libération, F-33405 Talence Cedex, France.
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Pozzo
authors.affiliation: †Université de Bordeaux, Institut des Sciences Moléculaires, UMR 5255 CNRS, 351 Cours de la Libération, F-33405 Talence Cedex, France.
authors.forename: Dominique
authors.initials: D
authors.lastname: Cavagnat
authors.affiliation: †Université de Bordeaux, Institut des Sciences Moléculaires, UMR 5255 CNRS, 351 Cours de la Libération, F-33405 Talence Cedex, France.
authors.forename: Thierry
authors.initials: T
authors.lastname: Buffeteau
authors.affiliation: †Université de Bordeaux, Institut des Sciences Moléculaires, UMR 5255 CNRS, 351 Cours de la Libération, F-33405 Talence Cedex, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Rodriguez