Journal
ORGANIC LETTERS
Volume 19, Issue 17, Pages 4492-4495Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.7b02047
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Funding
- NSFC [21473020, 21673031, 21421005]
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Bodipy-anthracene dyads with two chromophores assuming orthogonal geometry to enhance the spin-orbital charge-transfer intersystem crossing (SOCT-ISC) were prepared. The photosensitizers show strong absorption of visible light, efficient triplet-state formation (quantum yield 90%), and a long-lived triplet state (85 mu s). The dipole moment orientation exerts significant effect on the ISC efficiency. It is also the first time that photosensitizers based on SOCT-ISC were used for triplet-triplet annihilation upconversion. The upconversion quantum yield is up to 15.8%.
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