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US 5,473,047 AGranted
Soluble precursor to poly (cyanoterephthalydene) and method of preparation
AssigneeMotorola, Inc.
InventorSong Q. Shi
Life of this patent
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Abstract
A method of preparing a lass of PPV derivatives includes preparing a soluble precursor of a PPV derivative and converting the soluble precursor to a PPV derivative. The converting includes performing either a thermal treatment in a range of temperatures from approximately 25.degree. C. to 400.degree. C. at a reduced pressure or an acid-catalyzed ultraviolet radiation treatment.
Claims16
A method of preparing a class of poly(phenylene vinylene) derivatives comprising the steps of:
- preparing a soluble precursor of a poly(phenylene vinylene) derivative with the following reaction ##STR7## where:
- P is hydrogen or an electron withdrawing group selected from the group consisting cyano, nitro, or fluoride.
- RX is an organic trapping reagent;
- R.sup.1 to R.sup.8 represent substitutional possibilities at each position and each represents hydrogen or hydrocarbon groups or functional groups selected from the group consisting of cyano, nitro, halogen, haloalkyl, haloalkoxy, alkoxyl, amido, amino, sulfonyl, carbonyl, carbonyloxy and oxycarbonyl, with the provision that R.sup.1 and R.sup.2 together, R.sup.3 and R.sup.4 together, R.sup.5 and R.sup.6 together, R.sup.7 and R.sup.8 together can form a fused benzo ring;
- and
- n is the average number of repeating units in a single polymer molecule;
- and
- converting the soluble precursor to a poly (phenylene vinylene) derivative.
5 more elements
Dependencies are inferred from the claim text.