Abstract
A new approach for the preparation of poly (para-phenylenevinylene) (PPV) with an ordered structure is presented. PPV is synthesized by a precursor method using a cholesteric liquid crystal medium. The resultant PPV film is observed to have a cholesteric fingerprint-like texture, indicating replication of the cholesteric liquid crystal medium. Infrared absorption measurements confirm that the PPV has essentially the same molecular structure as normal PPV film. Ultraviolet-visible absorption measurements show that the absorption band due to π-π* transition of the conjugated main-chain is located at 402 nm. The conversion is found to occur at the interface with the cholesteric liquid crystal medium as a mechanical process.
Original language | English |
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Pages (from-to) | 438-443 |
Number of pages | 6 |
Journal | Journal of Applied Polymer Science |
Volume | 107 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2008 Jan 5 |
Externally published | Yes |
Keywords
- Chiral
- Films
- Liquid crystals
- UV-vis spectroscopy
- π-conjugated polymers
ASJC Scopus subject areas
- Chemistry(all)
- Surfaces, Coatings and Films
- Polymers and Plastics
- Materials Chemistry