Energy transfer from quantum dots to metal-organic frameworks for enhanced light harvesting

Shengye Jin, Ho Jin Son, Omar K. Farha, Gary P. Wiederrecht, Joseph T. Hupp

Research output: Contribution to journalArticle

242 Citations (Scopus)

Abstract

Because of their efficient energy-transport properties, porphyrin-based metal-organic frameworks (MOFs) are attractive compounds for solar photochemistry applications. However, their absorption bands provide limited coverage in the visible spectral range for light-harvesting applications. We report here the functionalization of porphyrin-based MOFs with CdSe/ZnS core/shell quantum dots (QDs) for the enhancement of light harvesting via energy transfer from the QDs to the MOFs. The broad absorption band of the QDs in the visible region offers greater coverage of the solar spectrum by QD-MOF hybrid structures. We show through time-resolved emission studies that photoexcitation of the QDs is followed by energy transfer to the MOFs with efficiencies of more than 80%. This sensitization approach can result in a >50% increase in the number of photons harvested by a single monolayer MOF structure with a monolayer of QDs on the surface of the MOF.

Original languageEnglish
Pages (from-to)955-958
Number of pages4
JournalJournal of the American Chemical Society
Volume135
Issue number3
DOIs
Publication statusPublished - Jan 23 2013

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ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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