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Royal Society of Chemistry, Chemical Communications, 38(51), p. 8010-8013, 2015

DOI: 10.1039/c5cc01542a

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Quantum confinement-tunable intersystem crossing and the triplet state lifetime of cationic porphyrin–CdTe quantum dot nano-assemblies

Journal article published in 2015 by Ghada H. Ahmed ORCID, Shawkat Mohammede Aly, Anwar Usman, Mohamed S. Eita, Vasily A. Melnikov, Omar F. Mohammed ORCID
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This paper is available in a repository.

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Abstract

Here, we report a ground-state interaction between the positively charged cationic porphyrin and the negatively charged carboxylate groups of the thiol ligands on the surface of CdTe quantum dots (QDs), leading to the formation of a stable nanoassembly between the two components. Our time-resolved data clearly demonstrate that we can dramatically tune the intersystem crossing (ISC) and the triplet state lifetime of porphyrin by changing the size of the QDs in the nanoassembly.