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Mechanistic Elucidation of Superoxide Anion Radical-Induced Photobleaching in Prodigiosin: An Integrated Experimental and DFT Study
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DOI：10.1016/j.dyepig.2026.113834.png)
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Abstract
En 中文
• Prodigiosin shows promise as a sustainable textile dye but is limited by poor lightfastness. • A synthetic analogue, Py-Pro, was employed to elucidate the photodegradation mechanism. • Py-Pro undergoes Type-I self-sensitized photodegradation, generating superoxide radicals that drive chromophore cleavage. • Structural modification of the donor group enhances photostability in derived analogues. • Enhanced intramolecular charge transfer promotes intersystem crossing and accelerates photobleaching, providing guidance for dye design.
Keywords:
Prodigiosin
Py-Pro
photodegradation mechanism
superoxide radicals
intramolecular charge transfer
Journal
IF:
4.2
Papers:
1.3W
Citations:
2.9W
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Cited Papers