The formation and dynamic behavior of polyion complexbased vesicles (PICsomes) were examined under charge-balance disrupting conditions, using homo-catiomer and pegylatedaniomer. Under catiomer-rich conditions, an unusual increase in the PICsome size was observed, which was primarily attributed to Ostwald ripening. This growth was triggered by the addition of a homo-catiomer to switch the composition of the PIC membrane. The results provide insight into the design of smart PIC-based systems for functional nanocapsules.
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