Tuning the optoelectronic properties of 4,4'-N,N'-dicarbazole-biphenyl through heteroatom linkage: new host materials for phosphorescent organic light-emitting diodes

Shenglan Zhang; Runfeng Chen; Jun Yin; Feng Liu; Hongji Jiang; Naien Shi; Zhongfu An; Cong Ma; Bin Liu; Wei Huang

doi:10.1021/ol1008872

Tuning the optoelectronic properties of 4,4'-N,N'-dicarbazole-biphenyl through heteroatom linkage: new host materials for phosphorescent organic light-emitting diodes

Org Lett. 2010 Aug 6;12(15):3438-41. doi: 10.1021/ol1008872.

Authors

Shenglan Zhang¹, Runfeng Chen, Jun Yin, Feng Liu, Hongji Jiang, Naien Shi, Zhongfu An, Cong Ma, Bin Liu, Wei Huang

Affiliation

¹ Key Laboratory for Organic Electronics & Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), Nanjing 210046, China.

PMID: 20608681
DOI: 10.1021/ol1008872

Abstract

Five carbazole end-capped heterofluorenes (CzHFs) designed by structurally mimicking 4,4'-N,N'-dicarbazole-biphenyl (CBP) via connecting the biphenyl core of CBP with the linking atom of C, P, N, O, and S, respectively, were synthesized successfully, and their optoelectronic properties were investigated. The theoretical calculations and experimental results demonstrate that CzHFs are potential green, red, and even blue hosts for phosphorescent light-emitting diodes (PHOLEDs) with more desirable localization and energy levels of HOMO and LUMO and also higher triplet energy than CBP.