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<p>Phosphorescence of In(III)Cl-etioporphyrin-I in thin films of polyvinylbutyral was recorded at room temperature and atmospheric conditions. A series of phosphorescence spectra, based on which the glow duration τ<sub>phos</sub> ≈ 42 μs at 298 K was determined, was obtained using a stroboscopic method. A decrease in τ<sub>phos</sub> by almost two orders of magnitude with a change in temperature from 77 to 298 K confirmed the quenching effect of atmospheric oxygen in the gas-permeable polymer matrix. The phosphorescence quantum yield at 298 K increased by ~30 times, reaching a value of φ<sub>phos</sub> ≈ 0.74% with an increase in the excitation power density by ~300 times.</p>

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Phosphorescence of In(III)Cl-Etioporphyrin-I at 298 K

  • 期刊论文

  • 发表日期：

    2026年1月15日

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  • P. P. Pershukevich,
  • S. M. Arabei,
  • M. V. Belkov,
  • E. D. Rychikhina,
  • P. A. Stuzhin

摘要

Phosphorescence of In(III)Cl-etioporphyrin-I in thin films of polyvinylbutyral was recorded at room temperature and atmospheric conditions. A series of phosphorescence spectra, based on which the glow duration τphos ≈ 42 μs at 298 K was determined, was obtained using a stroboscopic method. A decrease in τphos by almost two orders of magnitude with a change in temperature from 77 to 298 K confirmed the quenching effect of atmospheric oxygen in the gas-permeable polymer matrix. The phosphorescence quantum yield at 298 K increased by ~30 times, reaching a value of φphos ≈ 0.74% with an increase in the excitation power density by ~300 times.