title: On the rigidity of polynorbornenes with dipolar pendant groups.
abstract: A range of polynorbornenes (PNBs) with fused dipolar pendant groups at C-5,6 positions was synthesized by ring-opening metathesis polymerization catalyzed by a ruthenium carbene complex (Grubbs I). Photophysical studies, EFISH measurements, and atomic force microscopy images have been used to investigate the structures and morphology of these polymers. These results suggest that the polymers may adopt rigid rod-like structures. The presence of the double bonds in PNBs appeared to be indispensable for the rigidity of the polymers. Interaction between unsaturated pendant groups may result in coherent alignment leading to a rod-like structure.
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.
authors.forename: Wei-Yu
authors.initials: WY
authors.lastname: Lin
authors.forename: Modachur G
authors.initials: MG
authors.lastname: Murugesh
authors.forename: Sundarraj
authors.initials: S
authors.lastname: Sudhakar
authors.forename: Hsiao-Ching
authors.initials: HC
authors.lastname: Yang
authors.forename: Hwan-Ching
authors.initials: HC
authors.lastname: Tai
authors.forename: Chia-Seng
authors.initials: CS
authors.lastname: Chang
authors.forename: Yi-Hung
authors.initials: YH
authors.lastname: Liu
authors.forename: Yu
authors.initials: Y
authors.lastname: Wang
authors.forename: I-Wen Peter
authors.initials: IW
authors.lastname: Chen
authors.forename: Chun-Hsien
authors.initials: CH
authors.lastname: Chen
authors.forename: Tien-Yau
authors.initials: TY
authors.lastname: Luh