Optical properties of photopolymerizable nanocomposites containing nanosized molecular sieves

I. Naydenova , E. Leite , Tz Babeva , N. Pandey (1) , T. Baron (2) , T. Yovcheva , S. Sainov , S. Martin (3) , Svetlana Mintova (4) , V. Toal

1 Department of Biochemistry and Molecular Biology
2 LTM - Laboratoire des technologies de la microélectronique
3 LASIM - Laboratoire de Spectrométrie Ionique et Moléculaire
4 LCS - Laboratoire catalyse et spectrochimie

Acrylamide-based photopolymerizable nanocomposites containing three types of nanosized crystals with controlled microporosity, Silicalite-1 (MFI-structure), AlPO-18 (AEI-structure) and Beta (BEA-structure) are studied. The influence of the porous nanoparticles on the average refractive index, optical scattering and holographic recording properties of the nanocomposite are characterized. The redistribution of nanoparticles as a result of the holographic recording in the layers is investigated by Raman spectroscopy. It is observed that in all three nanocomposites the nanoparticles are redistributed according to the illuminating light pattern. This redistribution improves the refractive index modulation only in the case of the MFI nanoparticles, while no improvement is observed in AEI and BEA doped layers. The results can be explained by the hydrophobic/hydrophilic nature of the nanoparticles and their interactions, or absence of interactions, with the host photopolymer.

Mots clés: Zeolite nanoparticles; molecular sieves; holographic gratings; optical patterning; optical properties of nanocomposites; photopolymerisable nanocomposites; photopolymers

Domaines: Chimie

I. Naydenova, E. Leite, Tz Babeva, N. Pandey, T. Baron, et al.. Optical properties of photopolymerizable nanocomposites containing nanosized molecular sieves. Journal of Optics, 2011, 13 (4, SI), ⟨10.1088/2040-8978/13/4/044019⟩. ⟨hal-01840381⟩