Divinylsiloxane-bisbenzocyclobutene-Based Polymer Modified with Polystyrene-Polybutadiene-Polystyrene Triblock Copolymers

摘要

The benzocyclobutene (BCB) ring opens thermally to produce o-quinodimethane. This extremely reactive species readily reacts with dienophiles via a Diels-Alder reaction. In the absence of a dienophile, o-quinodimethane reacts with itself to give a dimer, 1,2,5,6-dibenzocyclooctadiene, or undergoes a polymerization reaction similar to that of a 1,3-diene to give poly(o-xylene).