Regulation of the self-assembly morphology of azobenzene-bearing double hydrophobic block copolymers in aqueous solution by shifting the dynamic host–guest complexation

Abstract

The complexation equilibrium between azo and β-CD can be shifted by various methods, thus the micellar morphology of azo-bearing block copolymers is altered.

Variable self-assembly and in situ host–guest reaction of beta-cyclodextrin-modified graphene oxide composite Langmuir films with azobenzene compounds

“…At the same time, some N-Azo molecules can penetrate into the beta-CD cavity to form inclusion complex with dynamic equilibrium. 84,85 This deduction was veried from the surface pressurearea isotherms, UV-vis spectra, and morphological characterization. As for GO-CD/PAA-Azo composite Langmuir lm, the situation is greatly different.…”

Specific Disassembly of Lamellar Crystalline Micelles of Block Copolymer into Cylinders

“…Poly­(ε-caprolactone) with an end group Br (PCL-Br) was first synthesized via ring-opening polymerization (ROP) of ε-CL using 2-hydroxyethyl 2-bromoisobutyrate (HEBiB) as the initiator, and then atom transfer radical polymerization (ATRP) of DM was carried out using PCL-Br as macroinitiator . The details for synthesis and characterization of PCL - b - PDM are presented in the Supporting Information.…”

Vesicular and micellar self‐assembly of stimuli‐responsive poly(N‐isopropyl acrylamide‐b‐9‐anthracene methyl methacrylate) amphiphilic diblock copolymers

“…The copolymers can self‐assemble into vesicles and micelles and undergo thermally induced and pH‐induced morphological transition from vesicle to micelle and vice versa in aqueous solution. The stimuli responsiveness of amphiphilic block copolymers toward both temperature and pH can be adjusted by the tuning of the copolymer composition, as reported by several authors . The influence of the temperature and pH on the morphology of the poly(NIPAAm‐ b ‐AnMMA) block copolymers were examined with TEM and DLS in this study.…”

“…Amphiphilic block copolymers can self‐assemble into a range of morphologies, such as spherical micelles, vesicles, and cylindrical micelles (worms), in aqueous solution . The morphologies and stimuli responsiveness of the self‐assembled structures are often influenced by the relative block length of the amphiphilic block copolymers . In this study, we synthesized a series of amphiphilic block copolymers having constant hydrophilic PNIPAAm block lengths with various hydrophobic AnMMA blocks.…”