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Solution-processable, crystalline material for quantitative singlet fission

  • Ryan D. Pensack
  • , Christopher Grieco
  • , Geoffrey E. Purdum
  • , Samuel M. Mazza
  • , Andrew J. Tilley
  • , Evgeny E. Ostroumov
  • , Dwight S. Seferos
  • , Yueh Lin Loo
  • , John B. Asbury
  • , John E. Anthony
  • , Gregory D. Scholes

Research output: Contribution to journalArticlepeer-review

Abstract

Amorphous nanoparticles of the singlet fission chromophore 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-Pn) are fully crystallized through co-precipitation with a chemical additive. Time-resolved measurements indicate that singlet fission in the crystalline nanoparticles is quantitative, or lossless, whereas losses are evident in the amorphous nanoparticles as a result of frustrated triplet pair separation. Because triplet pairs form rapidly and separate slowly in amorphous material, mixed-phase samples are unable to compensate for these losses.

Original languageEnglish (US)
Pages (from-to)915-923
Number of pages9
JournalMaterials Horizons
Volume4
Issue number5
DOIs
StatePublished - Sep 2017

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials
  • Process Chemistry and Technology
  • Electrical and Electronic Engineering

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