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Proceedings Paper

Preparation and optical properties of amorphous silica doped with porphines and quinizarin by the sol-gel process
Author(s): Akio Makishima; Kazuki Morita; Hiroyuki Inoue; Motohiro Uo; Tomohiro Hayakawa; Masato Ikemoto; Kazuyuki Horie; Toshiro Tani; Youichi Sakakibara
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Paper Abstract

Amorphous siliceous materials with molecular dispersions of organic molecules, TPPS, TMPyP and DAQ were prepared by a sol-gel process in which Si(OC2H5)4 was hydrolyzed in weak acid solution. Effect of ultrasonic irradiation on the sol-gel process was studied for the TPPS/a-SiO2 system in order to attain the further molecular dispersions and shorten the sol-gel reactions. Optical properties of TMPyP doped sol-gel thin films were observed. An amorphous silica thin film which was doped with TMPyP on the order of 1 X 10-3 mol/mol SiO2 showed photochemical hole burning at 20 K. the TMPyP/a-SiO2 was heat-treated at various temperatures and the changes of optical spectrum were observed as a function of temperature. It was found that the sample was comparatively stable up to 200 degree(s)C. Apparent quantum yields of PHB of porphines and quinizarin in polymer or sol-gel film and bulk were discussed.

Paper Details

Date Published: 7 December 1992
PDF: 7 pages
Proc. SPIE 1758, Sol-Gel Optics II, (7 December 1992); doi: 10.1117/12.132041
Show Author Affiliations
Akio Makishima, Univ. of Tokyo (Japan)
Kazuki Morita, Univ. of Tokyo (Japan)
Hiroyuki Inoue, Univ. of Tokyo (Japan)
Motohiro Uo, Univ. of Tokyo (Japan)
Tomohiro Hayakawa, Univ. of Tokyo (Japan)
Masato Ikemoto, Univ. of Tokyo (Japan)
Kazuyuki Horie, Univ. of Tokyo (Japan)
Toshiro Tani, Electrotechnical Lab. (Japan)
Youichi Sakakibara, Electrotechnical Lab. (Japan)

Published in SPIE Proceedings Vol. 1758:
Sol-Gel Optics II
John D. Mackenzie, Editor(s)

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