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Photochromic Organic–Inorganic Nanocomposites as Holographic Storage Media

✍ Scribed by P. Judeinstein; P. W. Oliveira; H. Krug; H. Schmidt

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 247 KB
Volume: 7
Category: Article
ISSN: 1616-301X
DOI: 10.1002/(sici)1099-0712(199705)7:3<123::aid-amo299>3.0.co;2-b

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✦ Synopsis

This paper describes the properties of some new organic-inorganic photochromic layers. They are based on a hybrid organic-inorganic matrix in which tungsten heteropolyoxometallates (SiW 12 O 4À 40 , PW 12 O 3À 40 ) are entrapped in a network obtained from the reaction of 3-glycidoxy-propyltrimethoxysilane. The high homogeneity of these materials on the nanoscale leads to transparent monoliths and layers of controlled thicknesses up to 40 mm. The optical properties of the blend are emphasised and the construction of amplitude gratings in the materials by two-wave-mixing experiments is described. The results of the optical experiments and the comparison with the theoretical background are used as a model for photochromic holographic storage processes. *

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