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SYNTHESIS AND PHYSICAL PROPERTIES OF POLY(PHENYLENE VINYLENE)S HAVING OLIGO(ETHYLENE OXIDE) IN THE SIDE CHAIN.
- Source :
-
Molecular Crystals & Liquid Crystals . 2004, Vol. 411 Issue 1, p421-437. 17p. 3 Diagrams, 6 Charts, 6 Graphs. - Publication Year :
- 2004
-
Abstract
- Oligo(ethylene oxide) chains were introduced into the phenyl ring of the poly-(phenylene vinylene) (PPV) derivatives to obtain electronic and ionic conductive liquid crystalline PPV derivatives. Thermal decomposition of all PPV derivatives occurred before isotropic melt. A typical texture of the liquid crystalline phase was not shown but birefringence was observed below the thermal decomposition temperature. Exhibition of a smectic phase for the polymers having triethylene or tetraethylene oxide chains was supported by X-ray measurements. Electronic conductivity of the PPV derivatives doped with I2 and ionic conductivity of the mixture of these polymers and LiClO4 were also discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ETHYLENE oxide
*EPOXY compounds
*LIQUID crystals
*DOUBLE refraction
*POLYMERS
Subjects
Details
- Language :
- English
- ISSN :
- 15421406
- Volume :
- 411
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Molecular Crystals & Liquid Crystals
- Publication Type :
- Academic Journal
- Accession number :
- 17051361
- Full Text :
- https://doi.org/10.1080/15421400490436214