Please use this identifier to cite or link to this item: doi:10.22028/D291-24541
Title: Enhancement of the photochromic performance of spirooxazine in sol-gel derived organic-inorganic hybrid matrices by additives
Author(s): Hou, Lisong
Schmidt, Helmut K.
Hoffmann, Bernd
Mennig, Martin
Language: English
Year of Publication: 1997
OPUS Source: Journal of sol gel science and technology. - 8. 1997, S. 927-929
SWD key words: Photochromie
Organisch-anorganischer Hybridwerkstoff
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: Organic-inorganic hybrid materials synthesized via sol-gel processing are excellent solid matrices for photochromic dyes like spirooxazine, and the photochromic performance can be further enhanced by introducing suitable additives. This work describes the effects of additives on the photochromic intensity (ΔA0), decolouration rate (k) and photostability of spirooxazine in sol-gel derived organic-inorganic hybrid matrices. They include fluoro-alkylsilane (FAS), bisphenol A (BPA) and methyl-imidazole (MI). FAS enhances both ΔA0 and photostability, but has little effect on k. The higher the content of BPA, the higher the ΔA0 and the higher the photostability, but the lower the k. The effect of MI on ΔA0 and k is not so considerable as that of BPA and is a little complicated, while significant improvement in photostability is achieved by the addition of MI at an optimum concentration with the presence of BPA at a higher content.
Link to this record: urn:nbn:de:bsz:291-scidok-28346
Date of registration: 4-May-2010
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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