Influence of shape on the reactivity and properties of dendritic, hyperbranched and linear aromatic polyesters

Karen L. Wooley, Jean M.J. Fréchet*, Craig J. Hawker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

227 Scopus citations


Previously described dendritic and hyperbranched polyesters and a new linear polyester obtained by polymerization of 3-hydroxy-5-(t-butyldimethylsilyloxy)benzoic acid, each based on the 3,5-dihydroxybenzoic acid building block, were used in the study of differences in chemical and physical properties between the three different polymer architectures. Comparison of the physical properties between the dendritic, hyperbranched and linear structures showed that thermal properties, such as glass transition temperature and thermogravimetric analysis, were independent of macromolecular architecture. However, the dendritic and hyperbranched materials demonstrated comparative solubilities which were much greater than that found for the linear polymer. Other differences were observed in chemical reactivities.

Original languageEnglish (US)
Pages (from-to)4489-4495
Number of pages7
Issue number21
StatePublished - Oct 1994

Bibliographical note

Funding Information:
Financial support for this research from the National Science Foundation (DMR 92234421), the Australian Research Council and the Eastman Kodak Company is acknowledged with thanks. This work made use of the Cornell University Materials Science Center supported by the National Science Foundation (DMR 9121654). Fellowship support from the US Department of Education (K. L. W.) and the Australian Research Council (C. J. H.) is also gratefully acknowledged.


  • dendritic polyesters
  • hyperbranched polyesters
  • linear polyesters

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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