## Abstract We report the synthesis and optical properties of two different polyureas containing azo units in the main chain. The polymers were synthesized from the reaction between a diisocyanate and a diaminoazo compound (4,4β²βdiaminoazobenzene) with good yield. These polyureas have glass transit
Synthesis and characterization of polybenzimidazoles carrying additional pyridine and imidazole groups in the main chain
β Scribed by T. Brock; D.C. Sherrington; H.G. Tang
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 425 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0032-3861
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