Fully rodlike poly(4,4-biphenylene pyromellitimide) (PMDA-BZ) is so brittle in spite of its extremely high modulus. In this study, the brittleness was attempted to be improved without a significant sacrifice of the high modulus by incorporating short side groups. For this, benzidine monomers, which
Synthesis and characterization of a kind of poly(3-butylthiophene methine) with azo side groups
β Scribed by Ling-Jie Meng; Hong-Cai Wu; Chao Gao; Wen-Hui Yi
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 97 KB
- Volume
- 97
- Category
- Article
- ISSN
- 0021-8995
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π SIMILAR VOLUMES
We report the synthesis and polymerization of a new acetylene monomer with a cholesteryl side group. The monomer shows monotropic behaviour. Polymerization is initiated with the well-defined Schrock-type molybdenum carbene Mo(CHR)(NAr)(OR9) 2 with NAr = 2,6-dimethylaniline, R = C(CH 3 ) 2 C 6 H 5 an
been synthesized. The synthesis starts from the thiophene monomers and trimers, which are formylated to give the corresponding dialdehydes. The dialdehydes are reductively polymerized using a McMurry coupling. The polymers are characterized by GPC, optical spectroscopy (FT-IR, UV-vis, circular dichr