Photochromic organic-inorganic composite materials prepared by sol-gel processing: properties and potentials

Lisong Hou; Martin Mennig; Helmut K. Schmidt

doi:10.1117/12.185377

9 September 1994 Photochromic organic-inorganic composite materials prepared by sol-gel processing: properties and potentials

Lisong Hou, Martin Mennig, Helmut K. Schmidt

Author Affiliations +

Proceedings Volume 2255, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIII; (1994) https://doi.org/10.1117/12.185377
Event: Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIII, 1994, Freiburg, Germany

Abstract

The sol-gel method which features a low-temperature wet-chemical process opens vast possibilities to incorporating organic dyes into solid matrices for various optical applications. In this paper we present our experimental results on the sol-gel derived photochromic organic- inorganic composite (Ormocer) materials following an introductory description of the sol-gel process and a brief review on the state of the art of the photochromic solids prepared using this method. Our photochromic spirooxazine-Ormocer gels and coatings possess better photochromic response and color-change speed than the corresponding photochromic polymer coatings and similar photochemical stability to the latter. Further developments are proposed as to tackle the temperature dependence problem and further tap the potentialities of the photochromic dye-Ormocer material for practical applications.

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Lisong Hou, Martin Mennig, and Helmut K. Schmidt "Photochromic organic-inorganic composite materials prepared by sol-gel processing: properties and potentials", Proc. SPIE 2255, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIII, (9 September 1994); https://doi.org/10.1117/12.185377

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