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Polyacetylenes bearing mesogenic side groups: synthesis and properties. Part 3. Influence of flexible spacer length and tail functionality (Articolo in rivista)
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- Label
- Polyacetylenes bearing mesogenic side groups: synthesis and properties. Part 3. Influence of flexible spacer length and tail functionality (Articolo in rivista) (literal)
- Anno
- 2003-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/S0032-3861(03)00414-2 (literal)
- Alternative label
Stagnaro, P; Conzatti, L; Costa, G; Gallot, B; Valenti, B (2003)
Polyacetylenes bearing mesogenic side groups: synthesis and properties. Part 3. Influence of flexible spacer length and tail functionality
in Polymer (Guildford); Elsevier, Amsterdam (Paesi Bassi)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Stagnaro, P; Conzatti, L; Costa, G; Gallot, B; Valenti, B (literal)
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- http://www.sciencedirect.com/science/article/pii/S0032386103004142 (literal)
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- ISI Web of Science (WOS) (literal)
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- Stagnaro, P; Conzatti, L; Costa, G; CNR ISMAC Genova
Gallot, B; CNRS Vernaison, France
Valenti, B; Università di Genova (literal)
- Titolo
- Polyacetylenes bearing mesogenic side groups: synthesis and properties. Part 3. Influence of flexible spacer length and tail functionality (literal)
- Abstract
- We report on the synthesis of some novel liquid crystalline polyacetylenes derived from monosubstituted acetylenic monomers where the acetylenic moiety is linked through a short spacer (one or three methylene units and an ether bridge) to a biphenyl mesogenic core. The influence of length and functionality of the terminal groups on the thermal behaviour and on the nature of the mesophases is discussed. All the monomers show liquid crystalline behaviour. Polymerisations are carried out in solution with typical metathesis catalysts based on Mo and W and yield polyacetylenes with fairly high MW soluble in common organic solvents. Polymers are fully characterised by GPC, FT-IR, and H-1 NMR techniques: their thermal and morphological behaviour has been studied by TGA, DSC, POM and X-ray diffraction experiments. (literal)
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