Publications

Physique

Spectroscopie transitoire et photo-commutation des propriétés optiques non linéaires de second ordre de cristaux photochromes d'anils, corrélation structure-propriétés

Une série d'anils originaux, de groupe d'espace non centrosymétrique actifs en génération de second harmonique (GSH) et photochromes à l'état cristallin, a été obtenue. Un des composés présente une GSH de 11 (vs urée), un deuxième une photo…

Michel Sliwa

ou physique

Energy Collection, Transport, and Trapping by Supramolecular Organization of Dyes in Hexagonal Zeolite Nano Crystals

The incorporation of guest molecules into the cavities of molecular sieves leads to a large variety of highly interesting materials. Zeolite L - an aluminosilicate with one-dimensional channels of open diameter 7.1 Å - is a very versatile material…

Claudia Minkowski, Minako Takano, Robert Bernard Pansu, Gion Calzaferri

Advanced Functional Materials - 2005

Chimie

All-Optical Orientation of Photoisomerizable Octupolar Zinc(II) Complexes in Polymer Films

A new type of 4,4‘-bis(styryl)-2,2‘-bipyridine functionalized by a dialkylamino-azobenzene group has been prepared. This ligand has allowed the preparation of photoisomerizable octupolar tris(bipyridyl)zinc(II) complexes and the corresponding star…

Lydie Viau, Sébastien Bidault, Olivier Maury, Sophie Brasselet, Isabelle Ledoux, Joseph Zyss, Eléna Ishow, Keitaro Nakatani, Hubert Le Bozec

Journal of the American Chemical Society - 2004

Autre

Etudes électrochimiques de cinétiques de polycondensation sol-gel et de la fractalité des xérogels

Le 6-triéthoxysilyl-1-hexyl-ferrocène est une molécule stable, pouvant se lier de manière irréversible aux polysiloxanes en croissance, et possédant des propriétés électrochimiques, pour pouvoir l'utiliser comme une nouvelle sonde rédox. Les études…

Sébastien Sallard

Biotechnologies

Polyaromatic Luminescent Nanocrystals for Chemical and Biological Sensors

Recently, we have engineered new hybrid organic-inorganic materials through a simple and generic preparation of stable organic nanocrystals grown in sol-gel thin films prepared by spin-coating. 1-3 This process is based on the confined nucleation…

E. Botzung-Appert, Virginie Monnier, T Ha Duong, R. Pansu, A. Ibanez

Chemistry of Materials - 2004

Excited-state proton transfer dynamics of 6-hydroxyquinoline in acidic and alkaline aqueous solutions

O. Poizat, G. Buntinx, E. Bardez, Valérie Alain

Femtochemistry and femtobiology: Ultrafast events in molecular - 2004

Chimie

Picosecond dynamics of the photoexcited 6-methoxyquinoline and 6-hydroxyquinoline molecules in solution

The photophysical properties of 6-methoxyquinoline (6MeOQ) and 6-hydroxyquinoline (6HQ) in organic solvents and in neutral, acidic, and alkaline aqueous solutions have been studied by picosecond transient absorption spectroscopy. The dynamics of…

O. Poizat, Elisabeth Bardez, G. Buntinx, Valérie Alain-Rizzo

Journal of Physical Chemistry A - 2004

ou physique

Effect of size and light power on the fluorescence yield of rubrene nanocrystals

Rubrene nanocrystals were prepared from a toluene emulsion. For the bigger one (>500nm), the absorption spectrum is deformed at wavelength where the absobance of a single nanocristal is higher that 0.1. The nanocristals exhibit a long lived…

Guillaume J. Laurent, N.Thanh Ha-Duong, Rachel Méallet-Renault, Robert Bernard Pansu

Masuhara, Hiroshi;Kawata,Satoshi - 2004

Chimie

Characterization of alumina surfaces by fluorescence spectroscopy : Part 2. Photophysics of a bound pyrene derivative as a probe of the spatial distribution of reactive hydroxyl groups

In order to characterize and compare the spatial distribution of hydroxyl groups on gamma- and delta-alumina surfaces, a pyrene derivative was covalently grafted on these groups and studied by steady-state and time-resolved fluorescence spectroscopy…

Rémi Métivier, Isabelle Leray, Jean-Pierre Lefèvre, Magalie Roy-Auberger, Nathalie Zanier-Szydlowski, Bernard Valeur

Physical Chemistry Chemical Physics - 2003

Chimie

Reinvestigation of the Synthesis of Per-benzylated Glycosylethenes: A New Result

Juan Xie, François Durrat, Jean-Marc Valéry

Journal of Organic Chemistry - 2003