Multi-responsive drug delivery systems are playing a very important role in nanomedicine, as they can feature as smart carriers releasing their payload on demand.

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A multiresponsive microcapsule has been synthesized by incorporating photoswitchable spiropyran units and the thermoresponsive monomer N-isopropylacrylamide into membrane lumens. By using functionalized light or thermoresponsive groups, this multifunctional microcapsule can modulate programmed release and interface reactions between lipase and fluorescein diacetate, alkaline phosphatase and fluorescein diphosphate, and others. Exposing this multifunctional microcapsule in a programmed controlled way allowed us to develop schematics to understand complicated interface interactions on protocells.

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