Polyethyleneimine (PEI) is an amine-rich cationic polymer with a wide array of applications, most notably in drug/gene delivery systems, carbon dioxide capture, the preparation of polymer dots and as a metal ion chelating agent. Emerging applications have been propelled by advancements in polymer modification chemistry. However, despite PEI’s established and expanding utility, characterization of modified PEI has been limited due to a lack of methods available for describing the manner and extent to which modification has occurred. In this presentation, a spectroscopic investigation of acetylated PEI is described. 1D and 2D NMR, FTIR, fluorescence and UV spectrophotometric assays were evaluated for their qualitative and quantitative capacity in elucidating the extent and distribution of modification across the polymer.

Spectroscopic characterization of modified polyethyleneimine

2019 Spring National Meeting

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