Editing Poly(p-phenylene vinylene) (section)

====Ring-opening routes====
A bicyclooctadiene compound has been coupled by ring-opening metathesis polymerization (ROMP) to give a precursor polymer of high molecular weight and soluble in organic solvents. This polymer can be deposited as thin films and converted thermally to PPV. Lower conversion temperatures could be employed with the presence of an amine catalyst.

:[[File:Ring-opening metathesis polymerization to synthesize PPV revised.png||360px]]
:[[File:PPV ROMP heat.png|360px]]

A modification of the ROMP route to PPV used a silyl-substituted paracyclophane derivative. Transformation into PPV could be achieved by elimination of the silyloxy group followed by thermal treatment or treating the precursor polymer with acid. The advantage of this method is that polymers and block copolymers of well-defined molecular weight can be easily prepared.

:[[File:Synthesizing PPV using Shrock Initiator part 1.png|360px]]
:[[File:Synthesizing PPV via heating.png|360px]]