title: Twist versus linkage mode: which one is better for the construction of blue luminogens with AIE properties?
abstract: Two new blue luminogens, Py-4MethylTPE and Py-4mTPE, constructed with a pyrene core and tetraphenylethene peripheries, have been successfully obtained. These two luminogens show AIE and AEE effects, respectively, as a result of minor differences in their structures. An OLED device based on Py-4mTPE exhibits a good performance (ηC,max = 4.02 cd A(-1), λEL,max = 436 nm) and reveals the powerful effect of a different linkage mode for the construction of blue AIE luminogens.
authors.affiliation: Department of Chemistry, Hubei Key Laboratory of Organic and Polymeric Optoelectronic Materials, Wuhan University, Wuhan 430072 (China), Fax: (86) 27-68756757.
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.forename: Jing
authors.initials: J
authors.lastname: Huang
authors.forename: Ning
authors.initials: N
authors.lastname: Sun
authors.forename: Qian
authors.initials: Q
authors.lastname: Peng
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Li
authors.forename: Dongge
authors.initials: D
authors.lastname: Ma
authors.forename: Zhen
authors.initials: Z
authors.lastname: Li
keywords: conjugation; density functional calculations; electrochemistry; luminescence; organic light-emitting diodes