Lessons from Intramolecular Singlet Fission with Covalently Bound Chromophores: Article No. 040904

Justin Johnson, Nadezhda Korovina, Nicholas Pompetti

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76 Scopus Citations

Abstract

Molecular dimers, oligomers, and polymers are versatile components in photophysical and optoelectronic architectures that could impact a variety of applications. We present a perspective on such systems in the field of singlet fission, which effectively multiplies excitons and produces a unique excited state species, the triplet pair. The choice of chromophore and the nature of the attachment between units, both geometrical and chemical, play a defining role in the dynamical scheme that evolves upon photoexcitation. Specific final outcomes (e.g., separated and uncorrelated triplet pairs) are being sought through rational design of covalently bound chromophore architectures built with guidance from recent fundamental studies that correlate structure with excited state population flow kinetics.
Original languageAmerican English
Number of pages21
JournalThe Journal of Chemical Physics
Volume152
Issue number4
DOIs
StatePublished - 2020

NREL Publication Number

  • NREL/JA-5900-75360

Keywords

  • chemical bonding
  • chemical compounds
  • delocalization
  • electronic coupling
  • excitons
  • isomerism
  • molecular dynamics
  • photochemistry
  • photoexcitations
  • solar-photochemistry
  • ultrafast molecular spectra

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