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A new family of polyampholytes (PAMs) is described in which both the basic and acidic groups are based on nitrogen functional groups. RAFT-prepared poly(pentafluorophenyl acrylate) was quantitatively modified sequentially with… Click to show full abstract
A new family of polyampholytes (PAMs) is described in which both the basic and acidic groups are based on nitrogen functional groups. RAFT-prepared poly(pentafluorophenyl acrylate) was quantitatively modified sequentially with 3-picolylamine and 5-aminotetrazole, yielding the new well-defined statistical PAMs. Successful formation of the PAMs was confirmed via a combination of 19 F and 13 C NMR spectroscopy and FTIR. Aqueous electrophoresis indicated isoelectric points (pI) between 2.9 and 4.4 depending on copolymer composition. However, the pI was somewhat insensitive to the copolymer composition, a feature attributed to the similarity of the pKa s of the acid tetrazole species and the conjugate acid of the pyridyl repeat units. This article is protected by copyright. All rights reserved.
Journal Title: Macromolecular rapid communications
Year Published: 2022
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