J. Biteau

TL;DR: In this article, photochromic dyes were trapped in gel thin films and the kinetics of photochromism in these gels were quantified using both Gaussian and simple biexponential models in order to take into account the inhomogeneous distribution of free volume in the gel matrix and compare the photodynamics with that in organic polymers.

TL;DR: In this article, the authors developed pure inorganic and hybrid organic-inorganic solids by sol-gel processing of silicon alkoxides, which can be obtained at room temperature, in any desired shape, including thin films, and are able to trap organic molecules or clusters.

TL;DR: In this article, high remanent optical anisotropy in photochromic sol-gel films is shown to be photoinduced by discoloration with linearly polarized visible light, which results in a linear dichroism in the visible absorption band and in an important birefringence in the near-infrared transparency region.

TL;DR: In this article, the effect of substituents (pyridyl or methoxyphenyl) of the optically active molecules on photochromic properties was investigated, showing that methoxphenyl substituted molecules show a large refractive index change, Δn=3.10−3 at 785 nm.

TL;DR: In this paper, a large variety of materials for optical and optoelectronic applications has been developed by trapping active organic molecules and nanocrystals into pure inorganic and hybrid organic-inorganic gels.