Investigating templating within Polymer-Scaffolded Dynamic Combinatorial Libraries

Clare S. Mahon, Alexander W. Jackson, Benjamin S. Murray, David A. Fulton

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Polymer-Scaffolded Dynamic Combinatorial Libraries (PS-DCLs) have been prepared in aqueous solution by the reversible conjugation of two different acylhydrazide residues onto aldehyde-functionalized dimethylacrylamide-based polymer scaffolds. PS-DCLs have been shown by 1H NMR spectroscopic analysis to adapt their composition in response to addition of three macromolecular template species, namely poly(sodium-4-styrenesulfonate), bovine serum albumin and bovine trypsin. Compositional changes within PS-DCLs in response to template addition may be rationalized in terms of multivalent interactions between members of the PS-DCL and templates. A systematic evaluation of how properties of the polymer scaffold, including molecular weight and density of aldehyde functionalities, affect the behaviour of resultant PS-DCLs is detailed. Increasing the molecular weight of the polymer scaffold has been shown to induce a linear decrease in the amplification of the preferred residue upon template addition. A linear relationship between the molar weight percentage of the aldehyde functionalized monomer and the extent of amplification of the preferred residue upon template addition has also been demonstrated.

Original languageEnglish
Pages (from-to)368-377
Number of pages10
JournalPolymer Chemistry
Issue number2
Publication statusPublished - 21 Jan 2013

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