Synthesis and nonlinear optical properties of hyperbranched polytriazole containing second-order nonlinear optical chromophore
✍ Scribed by Jianda Xie; Lihua Hu; Wenfang Shi; Xiaoxu Deng; Zhuangqi Cao; Qishun Shen
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 198 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0887-6266
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## Abstract **Summary:** Condensation polymers based on two different NLO‐active chromophores, namely 2‐[4‐[(4‐__N__,__N__‐dihydroxyethylamino)phenylazo]phenyl]‐5(6)‐nitrobenzimidazole (BZI) and 2‐[4‐(4‐__N__,__N__‐dihydroxyethylamino)phenylazo]‐4,5‐dicyanoimidazole (IMI), have been synthesized and
## Abstract A novel hyperbranched polymer (**3**) was prepared by copolymerization of tri‐aldehyde moieties with azo chromophores having two active methelene groups, from "A~2~+B~3~" approach based on simple Kneovenagel reaction. For comparison, its analogue linear polymer (**5**) was also synthesi