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

Ghada H. Ahmed, Shawkat Mohammede Aly, Anwar Usman, Mohamed Samir Eita, Vasily Melnikov, Omar F. Mohammed

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

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.
Original languageEnglish (US)
Pages (from-to)8010-8013
Number of pages4
JournalChem. Commun.
Volume51
Issue number38
DOIs
StatePublished - 2015

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