Photo-crosslinkable polymers with benzylideneacetophenone (chalkone) structure in the side chains
โ Scribed by S. P. Panda
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- English
- Weight
- 466 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0021-8995
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๐ SIMILAR VOLUMES
## Abstract Methacrylates (=2โmethylpropenoates) **5** with (__E__)โstilbene (=(__E__)โ1,2โdiphenylethene) building blocks on tethers of variable length were prepared (__Schemeโ 2__) and polymerized (__i.e.__, **5**โ**6**; __Schemeโ 3__) in the presence of AIBN (=2,2โฒโazobis(2โmethylpropanenitrile).
A series of organo-soluble hairy-rod polyimides was recently synthesized from 3,3ะ,4,4ะ-biphenyltetracarboxylic dianhydride (BPDA) and di[n-alkyl]-4,4ะ-diamino-6,6ะ-dibromo-2,2ะ-biphenyldicarboxylate with side chains of varying lengths (the numbers of methylene units), BACBP(n). Dynamic mechanical (