Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Monika Wendel"'
Publikováno v:
Dyes and Pigments. 141:306-315
Betalains are natural dyes which can be used in non-toxic environmentally friendly dye-sensitized solar cells (DSSC). In this paper we provide results characterizing the performance of DSSC constructed using betanin, 2,17-bidecarboxybetanin, vulgaxan
Autor:
Gotard Burdzinski, Dorota Prukała, Sławomir Wybraniec, Monika Wendel, Marek Sikorski, Stanislaw Nizinski
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 332:602-610
The photophysics of neobetanin (14,15-dehydro-betanin) is compared to that of the structurally similar betacyanins. The dye S 1 state lifetime in solution depends on the solvent viscosity, the strength of solute-solvent hydrogen bonds and the possibi
Autor:
Stanislaw Nizinski, Gotard Burdzinski, Dorota Prukała, Monika Wendel, Marek Sikorski, Michał F. Rode, Sławomir Wybraniec
Publikováno v:
RSC Advances. 7:6411-6421
Miraxanthin V is a betaxanthin dye occurring in Caryophyllales plants. This work describes its photophysical properties in aqueous and alcoholic solutions. After excitation at λexc = 480 nm (2.6 eV), transient absorption spectrum of the excited S1 s
Autor:
Dorota Tuwalska, Sławomir Wybraniec, Marek Sikorski, Dominika Szot, Gotard Burdzinski, Monika Wendel, Dorota Prukała, Karolina Starzak, Ryszard Naskrecki, Jacek Gapiński
Publikováno v:
Journal of Luminescence. 167:289-295
Betaxanthins are yellow pigments present in Caryophyllales plants and some higher fungi. We characterize photophysical properties of vulgaxanthin I and extracts of Amanita muscaria L. Vulgaxanthin I photoexcitation at λexc=476 nm leads to the S1 exc
Autor:
Dorota Prukała, Monika Wendel, Dorota Tuwalska, Karolina Starzak, Sławomir Wybraniec, Gotard Burdzinski, Tomasz Pedzinski, Dominika Szot, Marek Sikorski
Publikováno v:
Dyes and Pigments. 113:634-639
Photophysical properties of indicaxanthin in solution were studied at room temperature using stationary and time-resolved spectroscopies. The results obtained suggest the photoprotective role of indicaxanthin in its natural environment due to the eff
Autor:
Karolina Starzak, Sławomir Wybraniec, Marek Sikorski, Mateusz Gierszewski, Gotard Burdzinski, Stanislaw Nizinski, Monika Wendel, Dorota Prukała
Publikováno v:
Photochemicalphotobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology. 15(7)
Betanin is the best known natural dye belonging to the betacyanin family. In this work, efficient singlet oxygen quenching by betanin in deuterated water with the rate constant 1.20 ± 0.15 × 10(8) M(-1) s(-1) is reported, deduced from the (1)O2 pho
Autor:
Sławomir Wybraniec, Dorota Prukała, Marek Sikorski, Monika Wendel, Stanislaw Nizinski, Karolina Starzak, Dominika Szot, Dorota Tuwalska, Gotard Burdzinski
Publikováno v:
Physical Chemistry Chemical Physics
The photophysical properties of betanin in aqueous and alcoholic solutions were determined at room temperature using ultrafast UV-vis-NIR transient absorption spectroscopy (λexc = 535 nm). Its S1 → Sn (n > 1) absorption bands appear with maxima at