Preparation and optical properties of amorphous silica doped with porphines and quinizarin by the sol-gel process

Akio Makishima; Kazuki Morita; Hiroyuki Inoue; Motohiro Uo; Tomohiro Hayakawa; Masato Ikemoto; Kazuyuki Horie; Toshiro Tani; Youichi Sakakibara

doi:10.1117/12.132041

7 December 1992 Preparation and optical properties of amorphous silica doped with porphines and quinizarin by the sol-gel process

Akio Makishima, Kazuki Morita, Hiroyuki Inoue, Motohiro Uo, Tomohiro Hayakawa, Masato Ikemoto, Kazuyuki Horie, Toshiro Tani, Youichi Sakakibara

Author Affiliations +

Proceedings Volume 1758, Sol-Gel Optics II; (1992) https://doi.org/10.1117/12.132041
Event: San Diego '92, 1992, San Diego, CA, United States

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.

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Akio Makishima, Kazuki Morita, Hiroyuki Inoue, Motohiro Uo, Tomohiro Hayakawa, Masato Ikemoto, Kazuyuki Horie, Toshiro Tani, and Youichi Sakakibara "Preparation and optical properties of amorphous silica doped with porphines and quinizarin by the sol-gel process", Proc. SPIE 1758, Sol-Gel Optics II, (7 December 1992); https://doi.org/10.1117/12.132041

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