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Synthesis and characterization of hyperbranched polyesters incorporating the AB(2) monomer 3,5-bis(3-hydroxylprop-1-ynyl)benzoic acid

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Blencowe, A., Davidson, L. and Hayes, W. (2003) Synthesis and characterization of hyperbranched polyesters incorporating the AB(2) monomer 3,5-bis(3-hydroxylprop-1-ynyl)benzoic acid. European Polymer Journal, 39 (10). pp. 1955-1963. ISSN 0014-3057

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To link to this article DOI: 10.1016/s0014-3057(03)00127-7

Abstract/Summary

The AB, monomer, 3,5-bis(3-hydroxylprop-1-ynyl)benzoic acid 1, has been synthesized using a Sonogashira cross-coupling with a palladium catalyst system developed for use with deactivated aryl halides. Numerous condensation methods have then been assessed in the homopolymerization of the acid-diol monomer 1 to afford hyperbranched polyesters. However, as a result of the thermal instability of the monomer, direct thermal polymerizations could not be employed. Alternative approaches using carbodiimide-coupling reagents enabled the production of soluble polyesters possessing molecular weights and degrees of branching ranging from 2500 to 11,000 and 0.22 to 0.33, respectively. (C) 2003 Elsevier Ltd. All rights reserved.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:11039
Uncontrolled Keywords:hyperbranched polymer, polyester, coupling reagents, MALDI-TOF MS, DIACETYLENE-CONTAINING POLYMERS, POLY(OCTA-3,5-DIYNYLENE SEBACATE), PHENYLACETYLENE DENDRIMERS, DENDRITIC MACROMOLECULES, ALIPHATIC, POLYESTERS, AROMATIC POLYESTERS, CONSTRUCTION, CONVERGENT, REACTIVITY, GROWTH
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