Conjugated asymmetric donor-substituted 1,3,5-triazines: new host materials for blue phosphorescent organic light-emitting diodes

Zhong-Fu An; Run-Feng Chen; Jun Yin; Guo-Hua Xie; Hui-Fang Shi; Taiju Tsuboi; Wei Huang

doi:10.1002/chem.201101118

Conjugated asymmetric donor-substituted 1,3,5-triazines: new host materials for blue phosphorescent organic light-emitting diodes

Chemistry. 2011 Sep 19;17(39):10871-8. doi: 10.1002/chem.201101118. Epub 2011 Sep 2.

Authors

Zhong-Fu An¹, Run-Feng Chen, Jun Yin, Guo-Hua Xie, Hui-Fang Shi, Taiju Tsuboi, Wei Huang

Affiliation

¹ Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210046, PR China.

PMID: 21887832
DOI: 10.1002/chem.201101118

Abstract

Conjugated asymmetric donor-substituted 1,3,5-triazines (ADTs) have been synthesized by nucleophilic substitution of organolithium catalyzed by [Pd(PPh(3))(4)]. Theoretical and experimental investigations show that ADTs possess high solubility and thermostability, high fluorescent quantum yield (35%), low HOMO (-6.0 eV) and LUMO (-2.8 eV), and high triplet energy (E(T), 3.0 eV) according to the different substitution pattern of triazine. The application as host materials for blue PHOLEDs yielded a maximum current efficiency of 20.9 cd A(-1), a maximum external quantum efficiency of 9.8%, and a brightness of 9671 cd m(-2) at 5.4 V, making ADTs good candidates for optoelectronic devices.