Zhang, Jiulong; Li, Jiuyang; Li, Xun; Yuan, Shou; Sun, Yan; Zou, Yunlong; Pan, Yingtong; Zhang, Kaka published an article in 2022, the title of the article was Boosting organic afterglow efficiency via triplet-triplet annihilation and thermally-activated delayed fluorescence.Computed Properties of 118-55-8 And the article contains the following content:
Due to the spin-forbidden nature of organic phosphorescence, it is challenging to achieve high afterglow efficiency in room-temperature organic afterglow systems, especially for those with long afterglow emission wavelengths. Here we report the incorporation of triplet-triplet annihilation (TTA) and thermally-activated delayed fluorescence (TADF) mechanisms to significantly enhance the organic afterglow efficiency in dopant-matrix systems under ambient conditions. Difluoroboron β-diketonate (BF2bdk) compounds are selected as luminescent dopants and designed with naphthalene functional groups to show a relatively strong tendency of intersystem crossing. 4-Methoxybenzophenone matrixes are employed to facilitate intersystem crossing of BF2bdk excited states via dipole-dipole interactions and meanwhile suppress nonradiative decay and quenching of BF2bdk triplet excited states. Besides phosphorescence decay, the dopant-matrix systems exhibit addnl. pathways to harvest triplet energies via TTA and TADF, leading to the significant improvement of the organic afterglow efficiency. The afterglow materials can be melt-cast into desired shapes, can function as multicolor-encoded anti-counterfeiting objects, and can be processed into aqueous dispersions, which display background-free bioimaging properties. The experimental process involved the reaction of Phenyl Salicylate(cas: 118-55-8).Computed Properties of 118-55-8
The Article related to thermally activated delayed fluorescence cascade reaction organic afterglow, Placeholder for records without volume info and other aspects.Computed Properties of 118-55-8
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