Kumar Konidena Rajendra, Justin Thomas K R, Kumar Dubey Deepak, Sahoo Snehasis, Jou Jwo-Huei
Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247 667, India.
Chem Commun (Camb). 2017 Aug 22;53(86):11802-11805. doi: 10.1039/c7cc07139f.
A deep-blue emitter was developed by modifying carbazole nuclear positions C2 & C7 with a triphenylamine donor and C3 & C6 with a cyano acceptor. The molecular design features cross-conjugated localized and charge transfer chromophores which results in a hybridized local charge transfer (HLCT) excited state. An organic light emitting diode (OLED) using this material exhibited high external quantum efficiency (6.5%) with excellent color saturation (CIEy ∼ 0.06) and small full-width at half maximum (48 nm).
通过用三苯胺供体修饰咔唑核的C2和C7位置以及用氰基受体修饰C3和C6位置，开发出了一种深蓝色发射体。该分子设计具有交叉共轭的局域和电荷转移发色团，这导致了杂化局域电荷转移（HLCT）激发态。使用这种材料的有机发光二极管（OLED）表现出高的外量子效率（6.5%），具有出色的颜色饱和度（CIEy ∼ 0.06）和小的半高宽（48 nm）。
