Abstract
The present paper reports a case study of energy transfer (ET) phenomenon from the excited CdS/ZnS core-shell type quantum dots (QDs) having particle size of ~2 nm to a designed diporphyrin (1) molecule in solution. Photoluminescence intensity measurements and lifetime quenching experiments establish the process of Förster resonance energy transfer (FRET) from QDs to 1 in toluene. Magnitude of bimolecular quenching constant of QDs/1 system (2.185 × 10−13 s−1) rules out the possibility of diffusion controlled mechanism in present work. It is proposed that QDs/1 system may be employed as an efficient energy transfer unit for possible application in photosensitization.
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