A CO2-responsive well-defined magneto-polymeric drug delivery system has been developed. A dosage release of doxorubicin (DOX) in vitro in a time-controllable manner can be easily executed with alternate CO2/N2 treatment by these smart nanocarriers.
Diselenide groups were introduced into aliphatic polyesters to develop a novel well-defined reduction-labile biodegradable diselenide-containing polymeric drug delivery system (mPEG–PCL–Se)2.