Abstract
Three series of cascade polymers possessing identical internal hierarchical architectures, but with either acidic, neutral, or basic terminal functionality, have been prepared. An iterative synthetic strategy war employed that involved amidation (via peptide coupling methods) of carboxylic acids with branched amines possessing the desired protected functionalities, followed by facile deprotection to give water-soluble cascade polymers (dendrimers). Diffusion ordered spectroscopy ( 1 H DOSY NMR) of these cascade polyamides revealed that some of these polymers swell or shrink in response to the stimulus of a pH change
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