Highly-ordered onion micelles made from amphiphilic highly-branched copolymers

Abstract

Uniform onion micelles formed from up to ten nano-structured polymer layers were produced by the aqueous self-assembly of highly-branched copolymers.

Spray-Deposited Anisotropic Ferromagnetic Hybrid Polymer Films of PS-b-PMMA and Strontium Hexaferrite Magnetic Nanoplatelets

“…Similar to the in situ GISAXS analysis, at a higher q y value, a scattering feature from single nanoplatelets is also seen (marked with a green solid arrow). However, it shifts to a lower q y value compared to the sample without SVA because THF is a good solvent for the PAA chains, which are coated on the surface of nanoplatelets . During SVA, the PAA chains stretch and cause a larger center-to-center distance between the neighboring nanoplatelets.…”

“…However, it shifts to a lower q y value compared to the sample without SVA because THF is a good solvent for the PAA chains, which are coated on the surface of nanoplatelets. 63 During SVA, the PAA chains stretch and cause a larger center-to-center distance between the neighboring nanoplatelets. Moreover, the extracted average radius of the single nanoplatelet from GISAXS is around 3.8 ± 0.5 nm (Figure S9).…”

Aqueous solution behavior of stimulus-responsive poly(methacrylic acid)-poly(2-hydroxypropyl methacrylate) diblock copolymer nanoparticles

“…This enabled the design of new biocompatible hydrogels and micelles. [35][36][37] There are many examples of pH-responsive polymers based on either weak polyacids such as poly(methacrylic acid) (PMAA) 38,39 and poly(acrylic acid) 40 or weak polybases such as poly(2-vinylpyridine) (P2VP) 41 or poly(2-(dimethylamino)ethyl methacrylate) (PDMA). 42,43 The former class is particularly relevant to the present study.…”

Fast-Bactericidal Effect of Polyion Complex Nanoparticles on Gram-Negative Bacteria

“…In this study, we found that polyion complex (PIC) nanoparticles formulated with cationic poly­[3-(acrylamido)­propyl]­trimethylammonium chloride (PAMPTMA; Scheme ) in the presence of anionic surfactants exhibit a superior fast-bactericidal effect on Escherichia coli (a common Gram-negative bacterium), while an individual component of cationic polymers or anionic surfactants alone does not have such an effect. We introduced poly­(butyl methacrylate) (PBuMAc), one popular hydrophobic block often used for reversible addition–fragmentation chain-transfer (RAFT) polymerization, − to PAMPTMA to examine the influence of the hydrophobicity on the antibacterial activity. Homopolymer PAMPTMA and block copolymer PAMPTMA- b -PBuMAc form PIC nanoparticles with various anionic surfactants investigated, such as sodium dodecyl benzenesulfonate (SDBS), sodium dodecyl sulfate (SDS), sodium lauryl sulfate (SLS), and dioctyl sulfosuccinate sodium salt (DOSS).…”