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November 10, 2025Chemistry - A European JournalOpen Access

Effect of Thionation of the Carbonyl Groups in Naphthalimide‐Phenoxazine Electron Donor–Acceptor Dyads on the Excited‐ State Dynamics: Transient Optical and Electron Paramagnetic Resonance Spectral Studies

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Authors

YZYuqiong ZhangXZXue ZhangSHShihui He

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Overview

Analysis reveals thionation enhances charge separation in naphthalimide-phenoxazine dyads, implying new roles for electron acceptors.

Key Points

  • Thionation facilitates formation of charge-separated states, which enhances electron-accepting ability.
  • The study found intersystem crossing rate constants of 3.8 × 10 11 s −1 and 2.4 × 10 11 s −1 for the derivatives studied.
  • Observational analysis using transient optical and electron paramagnetic resonance spectroscopy provides insights into triplet states.
  • Findings highlight implications for designing efficient triplet photosensitizers based on thionation methods.

Cite This Study

Zhang et al. (2025) studied this question.

synapsesocial.com/papers/69253a1ec0ce034ddc357133https://doi.org/10.1002/chem.202502885
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