Photodynamic efficiency of porphyrins encapsulated in polysilsesquioxanes

Mesoporous organosilica-porphyrin composites were obtained by entrapment of 5,10,15,20-tetraphenylporphyrin (TPP) and 5,10,15,20-tetrakis(1-methyl-4-pyridinio)porphyrin (TMPyP) into three polysilsesquioxanes prepared by the sol-gel method from 1,2-bis(triethoxysilyl)ethane, 1,6-bis(triethoxysilyl)he...

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Veröffentlicht in:	Chemical papers 2012-04, Vol.66 (4), p.269-277
Hauptverfasser:	Rychtáriková, Renata, Šabata, Stanislav, Hetflejš, Jiří, Kuncová, Gabriela
Format:	Artikel
Sprache:	eng
Schlagworte:	absorbance bacteria Biochemistry Biotechnology Chemistry Chemistry and Materials Science Chemistry/Food Science fluorescence immobilisation Industrial Chemistry/Chemical Engineering Materials Science Medicinal Chemistry Original Paper photoinactivation porphyrin specific surface area
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Zusammenfassung:	Mesoporous organosilica-porphyrin composites were obtained by entrapment of 5,10,15,20-tetraphenylporphyrin (TPP) and 5,10,15,20-tetrakis(1-methyl-4-pyridinio)porphyrin (TMPyP) into three polysilsesquioxanes prepared by the sol-gel method from 1,2-bis(triethoxysilyl)ethane, 1,6-bis(triethoxysilyl)hexane, and 1,8-bis(triethoxysilyl)octane. The materials were characterised by their texture and optical properties (fluorescence and absorbance) and by light-induced antimicrobial activity against E. coli BL21(DE3) (pET16bDsRed) strain.
ISSN:	0366-6352 1336-9075 1336-9075
DOI:	10.2478/s11696-012-0153-3