title: Isomers of Pyrene-Imidazole Compounds: Synthesis and Configuration Effect on Optical Properties.
abstract: Two pyrene-imidazole-based structural isomers, axisymmetric syn-PyDTI and centrosymmetric anti-PyDTI, have been easily produced and successfully separated in a one-pot reaction. Crystalline syn-PyDTI exhibited a 2-fold higher quantum efficiency than anti-PyDTI and displayed a much better performance in OLEDs with a ηc.max of 11.4 cd A(-1) (8.8 cd A(-1) for anti-PyDTI), although they possess the same apparent electronic structure. Observations revealed that the molecular excited-state properties are derived from distinct structural symmetries.
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University , 2699 Qianjin Avenue, Changchun 130012, China.
authors.forename: Yulong
authors.initials: Y
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University , 2699 Qianjin Avenue, Changchun 130012, China.
authors.forename: Tong
authors.initials: T
authors.lastname: Shan
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University , 2699 Qianjin Avenue, Changchun 130012, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Yao
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University , 2699 Qianjin Avenue, Changchun 130012, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Bai
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University , 2699 Qianjin Avenue, Changchun 130012, China.
authors.forename: Yachen
authors.initials: Y
authors.lastname: Guo
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University , 2699 Qianjin Avenue, Changchun 130012, China.
authors.forename: Jinyu
authors.initials: J
authors.lastname: Li
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University , 2699 Qianjin Avenue, Changchun 130012, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Han
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University , 2699 Qianjin Avenue, Changchun 130012, China.
authors.forename: Weijun
authors.initials: W
authors.lastname: Li
authors.affiliation: School of Petrochemical Engineering, Shenyang University of Technology , Liaoyang 111003, China.
authors.forename: Zhiming
authors.initials: Z
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University , 2699 Qianjin Avenue, Changchun 130012, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University , 2699 Qianjin Avenue, Changchun 130012, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Lu
authors.affiliation: Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, China.
authors.forename: Yuguang
authors.initials: Y
authors.lastname: Ma