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|Title:||Enhancement of the photochromic performance of spirooxazine in sol-gel derived organic-inorganic hybrid matrices by additives|
Schmidt, Helmut K.
|Year of Publication:||1997|
|OPUS Source:||Journal of sol gel science and technology. - 8. 1997, S. 927-929|
|SWD key words:||Photochromie|
|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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