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Published on: June 20, 2019
Liquid Crystal Promoted Self-Assembly of Statistical Copolymers into Diverse Nanostructures with Precise Dimensions
Longlong Zhang1, Zifan Yang1, Wei Xia1
1Beijing National Laboratory for Molecular Science, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China.
A novel one-pot copolymerization method creates statistical copolymers with diverse nanostructures, including the first reported gyroid phase in such materials. This breakthrough simplifies the synthesis of advanced functional materials.
Area of Science:
- Polymer Chemistry
- Materials Science
- Nanotechnology
Background:
- Material properties depend on the segregation of components.
- Synthesizing nanosegregated materials often requires complex methods like controlled/living polymerization for block copolymers.
Purpose of the Study:
- To develop a facile one-pot copolymerization method for creating statistical copolymers with diverse nanostructures.
- To achieve well-defined nanostructures, including the gyroid phase, in statistical copolymers.
Main Methods:
- Designed two hemiphasmidic (wedge-shaped) cyclooctene monomers with different peripheral tails.
- Performed one-pot copolymerization of these monomers.
- Investigated the self-assembly of the resulting statistical copolymers.
Main Results:
- Achieved diverse nanostructures (sphere, cylinder, double gyroid, lamella) in statistical copolymers.
- Reported the gyroid phase for the first time in statistical copolymers.
- Demonstrated microphase separation driven by anisotropic packing of mesogens in side chains.
Conclusions:
- Facile one-pot copolymerization is a versatile method for generating statistical copolymers with tunable nanostructures.
- Statistical side-chain liquid crystal (LC) copolymers offer a platform for creating functional nanostructured materials.
- The approach simplifies the synthesis of complex nanostructures for advanced material applications.
