期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 360, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molliq.2022.119466
关键词
Scarf-like micelles; pH-responsive; Chain length; Controlled self-assembly; Polyurethane; Conformation
资金
- high-tech talent foundation of Chengdu university [208190244]
In this study, diblock copolymers were synthesized to control the shape of nanomicelles by adjusting the pH values and lengths of the core-forming blocks. Ultrathin scarf-like micelles, ultrathin disk-like micelles, and spherical micelles were obtained, providing an effective method for fabricating well-defined nanostructures.
Controlling the shape and size of the nanomicelles attracts great interest and is still challenging. Herein, we synthesized a kind of diblock copolymers with the hydrophilic block (poly (ethylene glycol) methyl ether, PEG) and the core-forming block composed alternately by hydrophobic segments, hydrogen-bonding carbamates and pH-responsive groups. The synergy effect of the pH variation and the core-forming block length on the morphologies of the assemblies was well studied. Ultrathin scarf-like micelles, ultrathin disk-like micelles and spherical micelles were obtained by tailoring the pH values and the lengths of the core-forming blocks. The ultrathin scarf-like micelles and ultrathin disk-like micelles were proved to be composed of a lamellar bimolecular layer of the block copolymers. This study will supply an effective method to fabricate well-defined nanostructures. (c) 2022 Elsevier B.V. All rights reserved.
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