ArticleJACS Au2026
Ultrafast Excited-State Dynamics and Two-Photon Near-Infrared Induced Photodynamic Therapy Performance of 5‑Phenylethynyl-4-thiouridine.
Article in JACS Au, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Photochemical Reaction Mechanism of Phosphapropyne to Ethynylphosphinidene via Sequential Hydrogen Atom Transfers and Dehydrogenation.Chemphyschem : a European journal of chemical physics and physical chemistry · 2026Article
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Authors and funding
8 authors.
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No grant is acknowledged in the PubMed record.
Abstract
5-Phenylethynyl-4-thiouridine (5ph-4TU), featuring both π-conjugated phenylethynyl and carbonyl-sulfur substitutions, overcomes the UVA absorption limitations of conventional thio-nucleosides by extending absorption into visible and potentially longer-wavelength regions under single or two photon excitationan essential advancement for enhancing nucleosides' photoactivity toward deep-tissue cancer photodynamic therapy (PDT). However, the ultrafast excited-state dynamics and synergistic effects of these dual modifications remain unexplored, despite their critical role in generating unique excited-state characters inaccessible for canonical nucleosides. Here, we employ ultrafast spectroscopy combined with QM-(MS-CASPT2//CASSCF)/MM calculations to map out the unusual excited-state pathways of 5ph-4TU. We reveal that the C5-phenylethynyl group can effectively suppress C5C6 bond twisting to incur a high barrier of 0.8 eV from the S
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