title: Aggregation-induced emission enhancement of aryl-substituted pyrrole derivatives.
abstract: The relationship between the structures and light emission properties of five aryl-substituted pyrrole derivatives was studied during aggregation in THF-water mixtures. Only pentaphenylpyrrole clearly shows, however, an aggregation-induced emission enhancement (AIEE) phenomenon. On comparison of the optical properties and single-crystal structures of these pyrrole derivatives, it is suggested that the more twisted configuration which prevented parallel orientation of conjugated chromophores combined with the restricted intramolecular rotation (RIR) effect was the main cause of the AIEE phenomenon.
authors.affiliation: College of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing, 100081, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Feng
authors.forename: Bin
authors.initials: B
authors.lastname: Tong
authors.forename: Jinbo
authors.initials: J
authors.lastname: Shen
authors.forename: Jianbing
authors.initials: J
authors.lastname: Shi
authors.forename: Tianyu
authors.initials: T
authors.lastname: Han
authors.forename: Long
authors.initials: L
authors.lastname: Chen
authors.forename: Junge
authors.initials: J
authors.lastname: Zhi
authors.forename: Ping
authors.initials: P
authors.lastname: Lu
authors.forename: Yuguang
authors.initials: Y
authors.lastname: Ma
authors.forename: Yuping
authors.initials: Y
authors.lastname: Dong