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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/228495
Environment-responsive Pt(II) complexes boost aggregation-enhanced emission and singlet oxygen production
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Here, we introduce an environment-tuning strategy to simultaneously boost aggregation-enhanced emission (AEE) and singlet oxygen (1O2) generation in PEGylated platinum(II) pyridyl complexes. Different amphiphilic Pt(II) species bearing triazole/tetrazole NˆNˆN ligands self-assemble in response to solvent polarity, polymer confinement, and packing forces, enabling precise control over intermolecular Pt···Pt and π···π interactions. This aggregation control strengthens the triplet-state population, delivering parallel gains in luminescence and photosensitization without modifying the core chromophore. Emission quantum yields rise from dilute-solution values to 25% in aggregated states and 0.25% in polymethyl methacrylate (PMMA) films, while 1O2 quantum yields reach ∼60% in aggregates and 49% in polystyrene (PS) films. This simple, modular approach couples emission enhancement with photoreactive oxygen production, offering a powerful design platform for multifunctional materials in photodynamic therapy, photocatalysis, and optical sensing.
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ROMO ISLAS, Guillermo and RODRÍGUEZ RAURELL, Laura. Environment-responsive Pt(II) complexes boost aggregation-enhanced emission and singlet oxygen production. Cell Reports Physical Science. 2025. Vol. 6, num. 1-11. ISSN 2666-3864. [consulted: 11 of June of 2026]. Available at: https://hdl.handle.net/2445/228495