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Persistent emission with a long lifetime (>1 s) from organic materials can only be observed at a low temperature, because of the significant nonradiative deactivation pathway that occurs at room‐temperature (RT). If organic materials with persistent RT emission in air could be developed, they could potentially be utilized for a variety of applications. Here, organic host‐guest materials with efficient...
A bis-sulfone small molecule, 4,4′-bis(phenylsulfonyl)biphenyl has been evaluated as a host for the phosphor iridium(III) bis(2-(4,6-difluorophenyl)pyridinato-N,C 2′ )picolinate in blue-green organic light-emitting devices. In addition, a poly(norbornene)-based polymer functionalized with a 3,6-bis(carbazol-9-yl)carbazole moiety as a side group is utilized as a solution-processible hole-transport...
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