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Facial Amphiphilicity-Induced Self-Assembly (FAISA) of Amphiphilic Copolymers
journal contribution
posted on 2019-12-12, 21:29 authored by Md Anisur Rahman, Ye Sha, Moumita Sharmin Jui, Meghan E. Lamm, Yufeng Ma, Chuanbing TangAmphiphilic molecules, including macromolecules and small
surfactants,
inherently self-assemble into a wide variety of nanostructures in
selective solvents. However, the sequential structure for synthetic
polymers is largely restricted to block copolymers. In this work,
we report facial amphiphilicity-induced self-assembly (FAISA) of gradient
amphiphilic copolymers. This new approach is demonstrated using facial
amphiphilic multicyclic compounds. The facial amphiphilicity of bile
acids allows cationic copolymers to form aggregates with different
morphologies in aqueous solution. By tuning the compositions of hydrophilic
and hydrophobic segments, these copolymers can self-assemble in water
to produce spherical, vesicle, and rodlike nanostructures via supramolecular
and electrostatic interactions. The hydrophobic interaction from multicyclic
hydrocarbon moieties largely dictates the self-assembly process, which
can be further modulated by integrating neutral hydrophilic poly(ethylene
glycol) in copolymer compositions with additional stimuli such as
temperature, charge density, and ionic screening.
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Facial Amphiphilicity-Induced Self-Assemblymulticyclic hydrocarbon moietiescharge densitycopolymer compositionsself-assembly processsequential structureself-assembleamphiphilic multicyclic compoundsrodlike nanostructurescationic copolymersgradient amphiphilic copolymersFAISAform aggregatesblock copolymersAmphiphilic Copolymers Amphiphilic moleculesinteractionbile acidsamphiphilicity-induced self-assembly
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