Three-Dimensional Structures Based on the Fusion of Chrysene and Spirobifluorene Chromophores for the Development of Blue OLEDs

Hayoon Lee; Hyocheol Jung; Seokwoo Kang; Jin Hyuck Heo; Sang Hyuk Im; Jongwook Park

doi:10.1021/acs.joc.7b03008

Three-Dimensional Structures Based on the Fusion of Chrysene and Spirobifluorene Chromophores for the Development of Blue OLEDs

J Org Chem. 2018 Mar 2;83(5):2640-2646. doi: 10.1021/acs.joc.7b03008. Epub 2018 Feb 21.

Authors

Hayoon Lee¹, Hyocheol Jung¹, Seokwoo Kang¹, Jin Hyuck Heo², Sang Hyuk Im², Jongwook Park¹

Affiliations

¹ Department of Chemical Engineering, College of Engineering, Kyung Hee University (KHU) , 1732 Deogyeong-daero, Giheung, Youngin, Gyeonggi 17104, Republic of Korea.
² Department of Chemical and Biological Engineering, Korea University , 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea.

PMID: 29457900
DOI: 10.1021/acs.joc.7b03008

Abstract

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.

Publication types

Research Support, Non-U.S. Gov't