Synthesis of Hyperbranched Polyphenylacetylene Resins and the Influence of their Molecular Architecture on their Properties

Kai Gu; Xiao Di Xu

doi:10.4028/www.scientific.net/AMR.1095.385

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1095Synthesis of Hyperbranched Polyphenylacetylene...

Synthesis of Hyperbranched Polyphenylacetylene Resins and the Influence of their Molecular Architecture on their Properties

Abstract:

Hyperbranched polyphenylacetylene resins were obtained by the homo-and copolycyclotrimerizations of diynes and monoynes initiated by tantalum-based catalysts, with the aim of exploring new synthetic routes to hyperbranched polyphenylacetylene resins. A group of hyperbranched poly (alkylenephenylenes) (hb-PAPs) were synthesized by TaBr5-Ph4Sn catalyzed polycyclotrimerization of 1,7-octadiyne. To improve the solubility of the homopolymers,the diyne monomers were copolymerized with phenylacetylene. IR,and 1H NMR Spectrum confirmed that the target polymers had formed via a [2+2+2] cyclotrimerization mechanism. The influence of the architecture of homopolymer and copolymer obtained from different kinds of monomer on the thermal properties and solubility were investigated.

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Periodical:

Advanced Materials Research (Volume 1095)

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385-392

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1095.385

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Online since:

March 2015

Authors:

Kai Gu, Xiao Di Xu

Keywords:

Cyclotrimerization Reaction, Diyne, Polyphenylacetylene Resins, Solubility, Thermal Properties

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