Abstract
Abstract The chlorophyll a (Chl a) and its mixture with β-carotene were embedded in nematic liquid crystal - anisotropic matrix. The decays of fluorescence were measured at two wavelengths: 680nm and 715nm and analyzed using biexponential and fractal models. Fractal model fits better to decay of fluorescence emitted at 680nm by samples with Chl a alone. For all other cases (decay observed at 680nm and 715nm luminescence of the pigment mixture and 715nm luminescence of Chl a alone) both models describe measured decays with similar adequacy. It seems that β-carotene molecules perturb the regular arrangement of chlorophyll in nematic solvent.
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