咔唑-喹喔啉-咔唑三联体中的多色发光切换及可控热激活延迟荧光开启/关闭
Multicolor Luminescence Switching and Controllable Thermally Activated Delayed Fluorescence Turn on/Turn off in Carbazole-Quinoxaline-Carbazole Triads.
作者信息
Pashazadeh Ramin, Pander Piotr, Lazauskas Algirdas, Dias Fernando B, Grazulevicius Juozas V
机构信息
Department of Polymer Chemistry and Technology, Kaunas University of Technology , Kaunas LT-50254, Lithuania.
Department of Physics, University of Durham , South Road, DH1 3LE Durham, United Kingdom.
出版信息
J Phys Chem Lett. 2018 Mar 1;9(5):1172-1177. doi: 10.1021/acs.jpclett.8b00136. Epub 2018 Feb 21.
We report a series of thermally activated delayed fluorescence (TADF) molecules with mechanochromic luminescence properties and reversible TADF turn on/off properties in solid state that are induced by the transition between amorphous and crystalline states. Additionally, multicolor altering through external stimulus is demonstrated. All of the studied compounds exhibited recovery of the initial states associated with narrower emission spectra. TADF organic light-emitting diodes fabricated by solution processing rendered high external quantum efficiency up to 10.9% and luminance of 16 760 cd m.
我们报道了一系列具有机械变色发光特性以及固态下可逆热激活延迟荧光（TADF）开启/关闭特性的分子，这些特性由非晶态和晶态之间的转变所诱导。此外，还展示了通过外部刺激实现的多色变化。所有研究的化合物都表现出与更窄发射光谱相关的初始状态的恢复。通过溶液处理制备的TADF有机发光二极管具有高达10.9%的高外量子效率和16760 cd m的亮度。
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