Authors Stumpe, K. ; Komber, H. ; Voit, B.
Title Novel Branched Polyphenylenes based on A2/B3 and AB2/AB Monomers via Diels-Alder Cycloaddition
Date 24.10.2006
Number 14210
Abstract Novel hyperbranched polyphenylenes based on both an A2 + B3 and an AB2 + AB approach were synthesised and characterised. Different monomers were prepared and polymerised using a Diels-Alder reaction with subsequent decarbonylation. The polymer backbones consist of hexaphenylbenzene units which are linked in different positions and functionalised by cyclopentadienone (A) and/or alkyne groups (B) depending on the monomer ratio. The structure and properties of the resulting polymers were compared to those of hyperbranched polyphenylenes based solely on an AB2 monomer. All branched products showed high thermal stability and good solubility in common organic solvents such as chloroform or toluene. However, due to steric hindrance, the polyphenylenes produced using the A2 + B3 approach exhibited a high percentage of linear units within the polymer structure.
Publisher Macromolecular Chemistry and Physics
Citation Macromolecular Chemistry and Physics 207 (2006) 1825-1833
Tags diels-alder reaction hyperbranched polyphenylenes synthesis nanofun-poly hyperbranched polyphenylenes polymers dendrimers route polycyclotrimerization polymerizations macromolecules fabrication reagents

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