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Fig. 5 | Nanoscale Research Letters

Fig. 5

From: Uptake of Chlorin e6 Photosensitizer by Polystyrene-Diphenyloxazole-Poly(N-Isopropylacrylamide) Hybrid Nanosystem Studied by Electronic Excitation Energy Transfer

Fig. 5

Fluorescence spectra of PS-PPO-PNIPAM hybrid NS free (black solid line) and upon addition of chlorin e6 measured in 0 min (black short-dashed line) and in 80 min (black dash-dotted line). The excitation wavelength is 250 nm. Fifty millimolars of Tris-HCl buffer, pH 7.2, is used as solvent. Differences of the spectra (solid, short-dashed and dash-dotted red lines) indicate the contribution of reabsorption and electronic excitation energy transfer (EEET) to emission quenching

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