Note that
the same polymer is used in this study as in our previously published
procedure.33 (link)mPEG- macroinitiator
(0.05 mmol, 100 mg), diethylaminoethyl methacrylate (DEAEMA) (10 mmol,
2 mL) and benzophenone methacrylate (BMA) (1.12 mmol, 300 mg) were
added to a Schlenk flask and dissolved in 6 mL of 2-butanone. Subsequently,
2,2′-bipyridine (0.1 mmol, ∼16 mg) was added to the
solution. The CuBr (0.1 mmol) catalyst was added, and the flask was
immediately frozen in liquid N2 and subjected to three
freeze–pump–thaw cycles before placing it in a preheated
oil bath at 60 °C. After the reaction, the solution was diluted
with 60 mL of THF and passed through an alumina column to remove the
catalyst. The filtrate was concentrated and precipitated in cold hexane
to give the final polymer.
the same polymer is used in this study as in our previously published
procedure.33 (link)mPEG- macroinitiator
(0.05 mmol, 100 mg), diethylaminoethyl methacrylate (DEAEMA) (10 mmol,
2 mL) and benzophenone methacrylate (BMA) (1.12 mmol, 300 mg) were
added to a Schlenk flask and dissolved in 6 mL of 2-butanone. Subsequently,
2,2′-bipyridine (0.1 mmol, ∼16 mg) was added to the
solution. The CuBr (0.1 mmol) catalyst was added, and the flask was
immediately frozen in liquid N2 and subjected to three
freeze–pump–thaw cycles before placing it in a preheated
oil bath at 60 °C. After the reaction, the solution was diluted
with 60 mL of THF and passed through an alumina column to remove the
catalyst. The filtrate was concentrated and precipitated in cold hexane
to give the final polymer.
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