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On the Rigidity of Polynorbornenes with Dipolar Pendant Groups
Author(s) -
Lin WeiYu,
Murugesh Modachur G.,
Sudhakar Sundarraj,
Yang HsiaoChing,
Tai HwanChing,
Chang ChiaSeng,
Liu YiHung,
Wang Yu,
Chen IWen Peter,
Chen Chunhsien,
Luh TienYau
Publication year - 2005
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200500770
Subject(s) - rigidity (electromagnetism) , dipole , chemistry , polymer chemistry , materials science , organic chemistry , composite material
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.