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June 18, 2026Journal of the American Chemical SocietyOpen Access

Singlet Fission among Two Single Molecules

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Authors

SPSumanta PaulOYOleksandr YampolskyyZWZ W Wu

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Overview

Randomized trial assesses singlet fission dynamics in single molecules, suggesting insights into exciton multiplication.

Key Points

  • The aim is to explore the mechanisms and dynamics of singlet fission at the single molecule level.
  • Performed single molecule spectroscopy on a terrylenediimide dimer at room and cryogenic temperatures.
  • Analyzed emitted photon streams to determine formation and decay rates of triplet states.
  • Identified heterogeneities in the singlet fission process through rate distribution analysis.
  • Observed considerable static and dynamic heterogeneities in singlet fission, reflected in broad rate distributions.
  • Detected delayed fluorescence and fluctuations in triplet state rates during spin evolution.
  • Cryogenic conditions revealed a coherent multiexciton superposition state decaying into a singlet exciton with a correlated triplet pair formation.

Cite This Study

Paul et al. (2026) studied this question.

synapsesocial.com/papers/6a338a08630953a74978c52ahttps://doi.org/10.1021/jacs.6c05963
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