Synthesis of pH/redox-double-responsive ferrocene-containing diblock copolymers and their application in controlled release

Preparation and characterization of temperature/pH/CO2-triple-responsive homopolymers and their substituent determined response

“…Subsequently, the release behaviour of micelles by wrapping NR was explored. 23–25,33,44,53–55 As shown in Fig. 7A, the fluorescence intensity of the solution gradually decreased with time, which proved that NR was gradually released from the micelles.…”

“…The accumulative release of NR was calculated according to eqn (1). 25 Note: I 0 and I t represent the initial and specific time fluorescence intensity of NR at the emission maximum.…”

“…The addition of one or more stimuli to the polymer is quite advantageous in terms of phase transformation, because the more complex the polymer, the more transformative conditions, and the better the control of its configuration. 19–26 Among a variety of stimuli, temperature and pH are the most common and easy to control and achieve. The synthesis of temperature/pH-responsive polymers is of great significance, 27–29 and usually, pH-responsive groups such as the amine group also have CO 2 -response, which endows the polymers with temperature/pH/CO 2 -triple responsiveness.…”