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February 22, 2026Physical Chemistry Chemical Physics1 citations

Heavy-Atom Effect on the Thermally Activated Delayed Fluorescence Property of Naphthalimide-Phenoselenazine Electron Donor-Acceptor Dyads: Electron Transfer and Intersystem Crossing

PJPeiwen JiangHBHaotian BaiYPYuying Pei

Key Points

  • The aim is to investigate the impact of heavy atoms on the delayed fluorescence properties of naphthalimide-based electron donor-acceptor dyads.
  • Synthesis of naphthalimide-based dyads with 10H-phenoxazine and 10H-phenoselenazine as donors.
  • Characterization of delayed fluorescence properties under thermal activation conditions.
  • Analysis of electron transfer and intersystem crossing processes.
  • Both NI-PXZ and NI-PSeZ exhibited significant thermally activated delayed fluorescence.
  • The introduction of heavy atoms influenced electron transfer rates.
  • Intersystem crossing was enhanced due to the heavy-atom effect, affecting the fluorescence lifetime.

Abstract

We prepared two electron donor-acceptor dyads based on naphthalimide (NI) as electron acceptor and 10H-phenoxazine (PXZ) or 10H-phenoselenazine (PSeZ) as electron donor. Both NI-PXZ and NI-PSeZ show the thermally activated...

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Cite This Study

Jiang et al. (2026) studied this question.

synapsesocial.com/papers/699a9d65482488d673cd3437https://doi.org/10.1039/d6cp00066e
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