title: Control of conjugation degree via position engineering to highly efficient phosphorescent host materials.
abstract: The C3 meta-position of fluorene is utilized to construct high-triplet energy compounds. Incorporating a spiroacridine structure, two new host materials SAFDPA and SAFCz were facilely obtained. Their thermal and photophysical properties are fully investigated. The best efficiencies of 19.4%/21.5% of blue/white devices are achieved by SAFCz.
authors.affiliation: Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, P.R. China.
authors.forename: Ye-Xin
authors.initials: YX
authors.lastname: Zhang
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Lin-Song
authors.initials: LS
authors.lastname: Cui
authors.forename: Chun-Hong
authors.initials: CH
authors.lastname: Gao
authors.forename: Hua
authors.initials: H
authors.lastname: Chen
authors.forename: Qian
authors.initials: Q
authors.lastname: Li
authors.forename: Zuo-Quan
authors.initials: ZQ
authors.lastname: Jiang
authors.forename: Liang-Sheng
authors.initials: LS
authors.lastname: Liao