Tunable Encapsulation Property of Amphiphilic Polymer Based on Hyperbranched Polyethylenimine

Photoswitchable Nanocarrier with Reversible Encapsulation Properties

“…28,29 Adopting a similar method, 25,28 a core−shell structured dendritic polymer was employed to capture the anionic guests. Herein, methyl orange (MO) and direct red (DR) were employed as the anionic guests.…”

“…Compared with supramolecularly assembled micelles, covalently bonded dendritic polymers with a core–shell structure are intrinsically stable nanocarriers, which cannot easily be affected by shear force, temperature, concentration, or pressure . Thus, amphiphilic dendritic polymers are excellent guest hosts for different applications, such as drug/biomolecule delivery, mixture separation, and nanocatalysis. ,− Haag et al fabricated a series of pH-sensitive dendritic polymers as the smart host for dye, anticancer agent, DNA, or Cu 2+ ions. ,− Some other groups also demonstrated some interesting examples of pH-sensitive dendritic polymer hosts. , More recently, utilization of photosensitive dendritic polymers as the hosts was reported, while most of the research groups were focused on the supramolecular assembly of dendritic polymers. , Light-sensitive dendritic polymers employed as the single molecular hosts were reported by a few groups. , Smith and co-workers synthesized a series of photodegradable dendrons with high affinity to DNA molecules, and the multivalent interactions could be “switched off” by photodegradation. − However, the utilization of the o -nitrobenzyl groups as the photolabile groups is irreversible.…”

“…Amphiphilic dendritic polymers based on the PEI core and hydrophobic shell are well reported for their excellent guest encapsulation properties. , Adopting a similar method, , a core–shell structured dendritic polymer was employed to capture the anionic guests. Herein, methyl orange (MO) and direct red (DR) were employed as the anionic guests.…”