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The mechanism of energy transfer (ET) phenomenon from the excited CdSxSe1−x/ZnS alloyed quantum dots (QDs) to 2,3,7,8,12,13,17,18-Octaethyl-21H,23H-porphine zinc(II) (1) molecule is investigated in solution through Förster resonance energy transfer (FRET) calculations, photoluminescence intensity measurements and lifetime quenching experiments. The process of ET from the excited QDs to 1 in toluene...