Journal
CHEMICAL COMMUNICATIONS
Volume 54, Issue 99, Pages 14029-14032Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cc07592a
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Funding
- Academy of Finland [316893]
- Centre for International Mobility (CIMO, Finland) [TM-16-10063]
- Academy of Finland (AKA) [316893, 316893] Funding Source: Academy of Finland (AKA)
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A green-to-blue triplet-triplet annihilation upconversion of 24.5% quantum yield was achieved at a remarkably low 600 M annihilator concentration in a viscous polymer matrix. This was made possible by utilizing a ZnTPP-based photosensitizer with exceptionally long 11 ms phosphorescence lifetime. Higher 3 mM annihilator concentration resulted in lower 24% upconversion quantum yield.
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