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首页> 外文期刊>Organic Electronics >Rational molecular design of deep blue thermally activated delayed fluorescent emitters for high efficiency fluorescent and hyperfluorescent devices
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Rational molecular design of deep blue thermally activated delayed fluorescent emitters for high efficiency fluorescent and hyperfluorescent devices

机译：用于高效荧光和超荧光设备的深蓝色热激活延迟荧光发射器的合理分子设计

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摘要

Two deep blue thermally activated delayed fluorescent (TADF) emitters with peripheral alkyl branches surrounding the donor and acceptor moieties were synthesized to explore ideal design of deep blue TADF emitters for fluorescence and hyperfluorescence in terms of quantum efficiency. The TADF emitters having the multiple alkyl branches protecting the donor and acceptor moieties performed better than the emitter without the alkyl branch or with the alkyl branch only in the donor or acceptor unit. The TADF emitters with the peripheral alkyl branches both in the donor and acceptor units showed a high quantum efficiency above 22.0%, a deep blue color coordinate of (0.15, 0.20), and doping concentration independent emission color as TADF emitters, and 13.7% quantum efficiency in the TADF sensitized hyperfluorescent device. Therefore, the multiple alkyl modification method of both donor and acceptor units of TADF emitters can resolve the issues of TADF emitters for ideal device performances.
机译：合成了两个深蓝色的热激活延迟荧光（TADF）发射器，其周围的烷基支链环绕着供体和受体部分，以探索量子效率方面理想的深蓝色TADF发射器用于荧光和超荧光的设计。具有多个保护供体和受体部分的烷基支链的TADF发光体比没有烷基支链或仅在供体或受体单元中具有烷基支链的发光体表现更好。在给体和受体单元中均具有外围烷基支链的TADF发射体显示出高于22.0％的高量子效率，深蓝色坐标（0.15，0.20）和掺杂浓度独立的发射色（作为TADF发射体）和13.7％量子TADF敏化超荧光设备的效率。因此，TADF发射体的供体和受体单元的多烷基改性方法可以解决TADF发射体对于理想器件性能的问题。

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