Spectroscopic studies on the inclusion complexes of etrakis(2-hydroxy-5-nitrophenyl)porphyrin with a-cyclodextrin in solution and in sol-gel matrix

• Autorzy: Ribeiro A. O. , Neri C. R. , Iamamoto Y. , Serra O. A.
• Konferencja: International Conference on Sol-Gel materials SGM 2001, Rokosowo, Poland
• Języki publikacji: EN

Abstrakty

EN

Tetrakis(2-hydroxy-5-nitrophenyl)porphyrin included in A-cyclodextrin (A-CD) photophysics was studied in aqueous media, in solid state and entrapped in a sol-gel matrix. The equilibrium constant of the pair porphyrin/A-CD was evaluated as 1.22x105 mol-1xdm-3. The nitroporphyrin was reduced to aminoporphyrin, included into the A-CD and then entrapped in the Si-O matrix network. The tetrakisporphyrin maintained its luminescent properties (with emission bands at 658 and 713 nm, excited at 422 nm) in all environments, indicating a structural stability under the experimental conditions.

Słowa kluczowe

EN

tetrakis(2-hydroxy-5-nitrophenyl)porph; yrin aminoporphyrin a-cyclodextrin; sol-gel; luminescence; inclusion compound; hybrid matrix

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Materials Science
• Rocznik: 2002
• Tom: Vol. 20, No. 1
• Strony: 21--27
• Opis fizyczny: Bibliogr. 17 poz.,

Twórcy

autor

Ribeiro A. O.

autor

Neri C. R.

autor

Iamamoto Y.

autor

Serra O. A.

• Rare Earth/Bioinorganic Laboratory, Chemistry Department, FFCLRP, University of Săo Paulo, Av. Bandeirantes 3900, CEP 14040-901, Ribeirăo Preto, Brazil