P4VP was quaternized according
to an adapted procedure from Sadman and co-workers.39 (link) To obtain QP4VP, 4.00 g (38 mmol) of P4VP was dissolved
in 40 mL of DMSO before 10.8 g (76 mmol, 2 equiv) of MeI was added
dropwise, and the reaction was stirred for 4 h at room temperature.
Excess MeI was first removed by bubbling the solution with nitrogen
before precipitation was performed in acetone, and the polymer was
redissolved in water. QP4VP was retrieved after freeze-drying and
with high yield, i.e., quaternization ≥99%, 9.06 g (yield 96%)
(Figure S6).
Free full text: Click here