K. Uhrich, C. Hawker, J. Fréchet
Aug 1, 1992
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0
Influential Citations
167
Citations
Quality indicators
Journal
Macromolecules
Abstract
5-(Bromomethyl)-1,3-dihydroxybenzene undergoes self-condensation in the presence of K 2 (CO 3 ) 2 and 18-crown-6 to give polymers with M w exceeding 10 5 . Spectroscopic analysis of the hyperbranched polymers reveals that both O-alkylation and C-alkylation occurs during polymerization. The polymers contain a large number of phenolic hydroxyl groups located both at chain ends and at monomer units involved in irregular growth. The phenolic groups of the polymers can be modified readily and completely by simple acylation, benzylationor silylation