文献类型：期刊文献

英文题名：Carbazole and dibenzo[b,d]furan-based hole transport materials with high thermal stability

作者：Zhu, Jiangnan[1,2];Zhang, Tianmei[1,2];Ding, Yuxi[1,2];Zhou, Haitao[3];Huang, Jinhai[3];Guo, Lifang[1,2];Su, Jianhua[1,2]

机构：[1]East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Ctr, Shanghai 200237, Peoples R China;[3]Shanghai Taoe Chem Technol Co Ltd, Shanghai, Peoples R China

年份：2022

卷号：46

期号：47

起止页码：22633

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;EI(收录号：20224813164728);WOS:【SCI-EXPANDED(收录号:WOS:000885563800001)】；

基金：We are thankful for the financial support from the NSFC/China (21788102, 22004036, 21875064, 21604023, 21790361, 21421004), the Shanghai Municipal Science and Technology Major Project (Grant No. 2018SHZDZX03), the Programme of Introducing Talents of Discipline to Universities (B16017), the Shanghai Municipal Science and Technology Committee (17520750100), the Shanghai Sailing Program (16YF1402200), the Fundamental Research Funds for the Central Universities (222201717003, 222201714011), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, and the Natural Science Foundation of Shanghai (19ZR1412200).

语种：英文

外文关键词：Glass transition - Hole mobility - Organic pollutants - Polycyclic aromatic hydrocarbons - Thermodynamic stability

摘要：High thermal stability is of pivotal significance for hole transport materials (HTMs) owing to thermal evaporation and device operation stability requirements. In this study, two new HTMs, namely FCzTPA and FCzDPNA, were developed by using easily accessible carbazole/dibenzo[b,d]furan derivatives. The rigid structures bring about excellent thermal stability, with a decomposition temperature (T-d) of up to 400 & DEG;C and glass transition temperature (T-g) above 190 & DEG;C. Moreover, benefiting from the twisted spatial configuration and constituent units, they both exhibit suitable triplet energy levels (E-T = 2.56, 2.74 eV). When hosting red phosphorescent organic light emitting diodes (PhOLEDs), the FCzTPA-based device shows a turn-on voltage (V-on) of 3.4 V and the maximum external efficiency (EQE(max)) of 18.61%, indicating that the synthetic compounds are potential building blocks for highly efficient OLEDs.