Porfiryny zamknięte w żelu krzemionkowym

• Autorzy: Wiglusz R. J.

Warianty tytułu

EN

Porphyrins closed in sol-gel matrix

• Języki publikacji: PL

Abstrakty

EN

The need for new, chemically and physically stable luminescent materials operating with UV excitations has stimulated research on luminescence properties of doped sol–gel material. In this work, it has been presented a technology of production of silica gels doped with organic molecules, lanthanide compounds and organic/inorganic composites. Optical properties of these materials as functions of temperature, concentration and excitation wavelength are presented. Dynamics of excited states has been discussed based on the decay times and emission efficiencies data. Mechanisms of ligand-to-metal energy transfer as well as other processes affecting emission efficiency are considered. Silica sol–gels doped with di-aminoacid derivatives of porphyrins: PP(Ser)2(Arg)2, PP(Ala)2(Arg)2, PP(Met)2(Arg)2, where Met, Arg and Ser denote methionine, serine and arginine aminoacids, respectively, and H2TTMePP {tetrakis[4-(trimethylammonio)phenyl]-21H,23H-porphine} have been obtained and spectroscopically studied. These materials can find applications as phosphors or sensors of UV irradiation.

Słowa kluczowe

PL

porfiryny; pochodne porfiryn; jony lantanowców; spektroskopia UV-VIS; luminescencja; zol-żel

EN

porphyrins; porphyrin derivatives; lanthanide(III) ions; UV-Vis spectroscopy; luminescence; sol-gel

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Wiadomości Chemiczne
• Rocznik: 2011
• Tom: [Z] 65, 7-8
• Strony: 675--703
• Opis fizyczny: Bibliogr. 51 poz., tab., wykr.

Twórcy

autor

Wiglusz R. J.

• Instytut Niskich Temperatur i Badań Strukturalnych, Polska Akademia Nauk, ul. Okólna 2, 50-422 Wrocław,

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