The incorporation of alternating 1,3- and 1,4-phenylene subunits into a planar, rigid ladder-type polymer leads to polyphenylene macromolecules of high structural regularity. The polymer is formed in a two-step process involving the preparation of a suitably substituted polyphenylene backbone, followed by ring closure via polymer-analogous Friedel-Crafts cyclization. The ladder-type polyphenylene is an appropriate precursor for generating polymers with 1,4-benzoquinone-bismethide substructures
Посилання на статтю:
Polyarylenes and poly(arylenevinylene)s: 8. The first soluble ladder polymer with 1,4-benzoquinone-bismethide subunits* / Ullrich Scherf and Klaus MOllen // Polymer. – 1992. – Vol 33. – P. 2443-2446.