Metal-Free OLED Triplet Emitters by Side-Stepping Kasha's Rule
Metal-Free OLED Triplet Emitters by Side-Stepping Kasha's Rule
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DOI：
10.1002/anie.201307601
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发表时间：
2013-12-09
影响因子：
16.6
通讯作者：
Lupton, John M.
中科院分区：
文献类型：
--
作者：
Chaudhuri, Debangshu;Sigmund, Eva;Lupton, John M.
保持光亮：大多数有机荧光团在三重态激发态中没有显示出有用的发射。提出了一种新的材料，用于有机发光二极管，即使在室温下也能在电激发下表现出磷光，而不使用重原子效应。内部转换的阻断是如此有效，以至于可以在低温下观察到位于单线态之上的高三重态的发射。
Keeping it light: Most organic fluorophores do not show useful emission from the triplet excited state. A new class of materials is presented for organic light‐emitting diodes that exhibit phosphorescence under electrical excitation, even at room temperature, without employing the heavy‐atom effect. Blocking of internal conversion is so effective that emission from higher‐lying triplet states, above the singlet, can be observed at low temperature.