Synthesis, characterization and side chains crystallization of comb-like poly(p-n-alkylstyrene)s
✍ Scribed by Francisco López-Carrasquero; Giuseppe Giammanco; Angélica Díaz; Johanna Dávila; Carlos Torres; Estrella Laredo
- Publisher
- Springer
- Year
- 2009
- Tongue
- English
- Weight
- 350 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0170-0839
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Several novel mesogenic spiro-orthoester monomers such as 1,6,10trioxaspiro [4,5]decanes 4, containing biphenyl mesogens at the C-8 positions of the fiveand six-membered spirocyclic ring, through the alkylene spacers of different lengths were prepared by condensation reaction of the corresponding bi
## Abstract The synthesis and thermal properties of a new type of side‐chain liquid‐crystalline polysalts are described. The polymers are first obtained by partial or complete alkylation of a linear poly(ethyleneimine) with 6‐(4‐methoxy‐4′‐biphenylyloxy)hexyl bromide or 12‐(4‐methoxy‐4′‐biphenylylo
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