On the rigidity of polynorbornenes with dipolar pendant groups |
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Authors: | Lin Wei-Yu Murugesh Modachur G Sudhakar Sundarraj Yang Hsiao-Ching Tai Hwan-Ching Chang Chia-Seng Liu Yi-Hung Wang Yu Chen I-Wen Peter Chen Chun-Hsien Luh Tien-Yau |
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Institution: | Department of Chemistry, National Taiwan University, Taipei 106, Taiwan. |
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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. |
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