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Room-temperature phosphorescent materials are needed because they offer unique properties and potential applications in various fields due to their capacity to absorb, store and emit light. In this study we summarized the progress in long-lived room-temperature phosphorescent system synthetized by self-assembly of ZnPc(COOH)₄ derivative and ZnO/Dx NPs in DMSO/H2O through a combination of electrostatic interactions and hydrogen bonding. Conjugation of the peripheral carboxy (–COO−) substituted ZnPc to ZnO/Dx NPs in DMSO/H2O broaden absorption bands, boost its triplet quantum yields and increase their triplet lifetimes from ~8.9 μs to ~10.2 μs. The triplet state parameters discussed in this study, together with the ground state absorption properties suggest that ZnPc(COOH)₄/Dx/ZnO composite may be tested as photosensitizers in photodynamic therapy.

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Phosphorescent Properties of the ZnPc(COOH)₄/Dx/ZnO Composite

  • 会议论文

  • 发表日期：

    2026年

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  • Tamara Potlog,
  • Ion Lungu,
  • Victor Suman,
  • Lidia Ghimpu,
  • Radu Tigoianu,
  • Anton Airinei

摘要

Room-temperature phosphorescent materials are needed because they offer unique properties and potential applications in various fields due to their capacity to absorb, store and emit light. In this study we summarized the progress in long-lived room-temperature phosphorescent system synthetized by self-assembly of ZnPc(COOH)₄ derivative and ZnO/Dx NPs in DMSO/H2O through a combination of electrostatic interactions and hydrogen bonding. Conjugation of the peripheral carboxy (–COO−) substituted ZnPc to ZnO/Dx NPs in DMSO/H2O broaden absorption bands, boost its triplet quantum yields and increase their triplet lifetimes from ~8.9 μs to ~10.2 μs. The triplet state parameters discussed in this study, together with the ground state absorption properties suggest that ZnPc(COOH)₄/Dx/ZnO composite may be tested as photosensitizers in photodynamic therapy.