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Conferences > SHBS > 1994 > WD > WD56

Synthesis and Spectroscopy of TPP Derivative-Doped Silica Gels by Sol-Gel Process

K. Kamitani, M. Uo, H. Inoue, A. Makishima, T. Suzuki, and K. Horie

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Abstract

We have reported the incorporation of the photochemical hole-burning (PHB) dyes to the silica gels and the observation of spectral holes [1-3]. The porphyrins are well-known PHB dyes. However, in acidic solutions, many porphyrins change their forms into dication which is inactive in PHB [4]. So we have developed two-step sol-gel processes from the hydrolysis of TMOS with NaOH, and successfully incorporated free-base TPPS, a kind of porphyrin, in the silica gels [5].

© 1994 Optical Society of America

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