Preparation and optical properties of amorphous silica doped with porphins, TCPP

Motohiro Uo, Mitsuharu Yamana, Kohei Soga, Hiroyuki Inoue, Akio Makishima

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


Tetrakis(4-carboxyphenyl)porphine (TCPP), which is well known as a photochemical hole burning(PHB) dye, was incorporated in amorphous silica materials(a-SiO2) by a sol-gel process with using tetramethoxysilane(TMOS) and aminopropyltriethoxysilane(APTES). With using APTES as precursor of silica gel, TCPP was cross-linked to a-SiO2 matrix through aminopropyl group of APTES. The cross-linkage of TCPP and APTES was confirmed by the FT-IR measurement. The TCPP incorporated in a-SiO2 matrices showed activity in PHB. In the TCPP cross-linked a-SiO2, properties of photochemical hole, such as hole width, quantum efficiency and irreversible broadening under cycle annealing experiment, were improved. A burnt hole at 3.6 K was observed after cycle annealing experiment up to 80 K in the TCPP cross-linked a-SiO2.

Original languageEnglish
Pages (from-to)2-9
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1997
EventSol-Gel Optics IV - San Diego, CA, United States
Duration: 30 Jul 19971 Aug 1997


  • Aminopropyltriethoxysilane(APTES)
  • Cross-link
  • FT-IR
  • Hole width
  • Irreversible broadening
  • Photochemical hole burning(PHB)
  • Quantum efficiency
  • Sol-gel process
  • TCPP


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