
72 HIGH PERFORMANCE POLYMERS
synthesized, which is then processed, e.g., into films.
In this form, the final polymer is obtained by
a post-treatment. However, varieties of PPV with
bulky substituents exhibit solubility in organic sol-
vents. A commercial variety is poly(2-methoxy-5-(2
-
ethylhexyloxy)-1,4-phenylenevinylene) (MEH-PPV).
A variety of methods of preparation have been
described, such as the preparation of the precursor
polymer via [1]:
• Sulfonium precursor (Wessling route),
• Ring-opening metathesis polymerization,
• Chemical vapor deposition,
• Electropolymerization,
• Dehydrohalogenation condensation polymeriza-
tion (Gilch Reaction),
• Dehydrohalogenation ...