7 December 1992 Preparation and optical properties of amorphous silica doped with porphines and quinizarin by the sol-gel process
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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.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Akio Makishima, Akio Makishima, Kazuki Morita, Kazuki Morita, Hiroyuki Inoue, Hiroyuki Inoue, Motohiro Uo, Motohiro Uo, Tomohiro Hayakawa, Tomohiro Hayakawa, Masato Ikemoto, Masato Ikemoto, Kazuyuki Horie, Kazuyuki Horie, Toshiro Tani, Toshiro Tani, Youichi Sakakibara, 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); doi: 10.1117/12.132041; https://doi.org/10.1117/12.132041
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