Blue-Emitting Soluble Poly(m-phenylenevinylene) Derivatives

Soluble poly(m-phenylenevinylene) derivatives (4) were synthesized via Wittig−Horner reaction. The number-average degree of polymerization was estimated to be around 25−35. On the basis of FT-IR and 1H NMR spectra, the olefins in the polymers were confirmed to be predominantly in the trans-configura...

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Bibliographic Details
Published in:Macromolecules 2001-10, Vol.34 (21), p.7300-7305
Main Authors: Liao, Liang, Pang, Yi, Ding, Liming, Karasz, Frank E
Format: Article
Language:English
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Summary:Soluble poly(m-phenylenevinylene) derivatives (4) were synthesized via Wittig−Horner reaction. The number-average degree of polymerization was estimated to be around 25−35. On the basis of FT-IR and 1H NMR spectra, the olefins in the polymers were confirmed to be predominantly in the trans-configuration. A model compound, 3,5-distyryl-4-hexyloxytoluene (5), was also synthesized to aid the structural characterization. Comparison of photoabsorption and emission characteristics between 4 and 5 indicated that the m-phenylene effectively interrupted the conjugation, allowing predictable color control in the π-conjugated polymers. At low temperature, the fluorescence of 4 was readily resolved into two peaks, suggesting the predominant emissions were from 0−1 and 0−2 transitions. Polymers 4 were found to be highly luminescent in both solution and film states. LED devices using 4 gave blue EL output (emission λmax at 445 and 462 nm).
ISSN:0024-9297
1520-5835
DOI:10.1021/ma0108923