title: Macrospirocyclic oligomers based on carbazole and fluorene.
abstract: Monodisperse macrospirocyclic oligomers were prepared using self-condensation of the Friedel-Crafts reaction. Through the C-9s of the central fluorene units of four surrounding oligofluorenes, four carbazole units are connected in a series to form a macrocyclic core. These rodlike oligofluorenes form a rigid three-dimensional structure, affording the resulting macrocyclics a high steric hindrance for close interchain packing.
authors.affiliation: Department of Polymer Science & Engineering, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Lu
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhou
authors.forename: Yi-Wu
authors.initials: YW
authors.lastname: Quan
authors.forename: Qing-Min
authors.initials: QM
authors.lastname: Chen
authors.forename: Run-Feng
authors.initials: RF
authors.lastname: Chen
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Zhang
authors.forename: Qu-Li
authors.initials: QL
authors.lastname: Fan
authors.forename: Wei
authors.initials: W
authors.lastname: Huang
authors.forename: Jian-Fu
authors.initials: JF
authors.lastname: Ding