Department of Chemical Engineering, College of Engineering, Kyung Hee University (KHU) , 1732 Deogyeong-daero, Giheung, Youngin, Gyeonggi 17104, Republic of Korea.
Department of Chemical and Biological Engineering, Korea University , 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea.
J Org Chem. 2018 Mar 2;83(5):2640-2646. doi: 10.1021/acs.joc.7b03008. Epub 2018 Feb 21.
A new deep-blue chromophore containing a three-dimensionally (3D) shaped CS core composed of fused chrysene and spirofluorene units is synthesized. A pair of m-terphenyl (TP) units is also substituted onto the CS core at two different sets of positions to form two additional compounds: CS-TPTP and TP-CS-TP. The TP-CS-TP compound showed the highest efficiency with an external quantum efficiency (EQE) of 3.05% and Commission Internationale de L'Eclairage coordinates (CIE) of (0.148, 0.098) corresponding to the emission of blue light. This approach for forming a new chromophore is expected to lead to the development of functional organic materials with excellent characteristics.
合成了一种新型的深蓝色发色团，它含有一个由并五苯和螺芴单元组成的三维（3D）形状的 CS 核心。在 CS 核心的两个不同位置上还取代了一对间三联苯（TP）单元，形成了另外两个化合物：CS-TPTP 和 TP-CS-TP。TP-CS-TP 化合物表现出最高的效率，外量子效率（EQE）为 3.05%，国际照明委员会（CIE）坐标为（0.148, 0.098），对应于蓝光发射。这种形成新发色团的方法有望开发出具有优异特性的功能性有机材料。
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