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A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

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Core-Shell Double Gyroid Structure Formed by Linear ABC Terpolymer Thin Films.

Ségolène Antoine¹, Karim Aissou¹, Muhammad Mumtaz¹

¹Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS - ENSCPB - Université de Bordeaux, 16 Avenue Pey-Berland, F-33607, Pessac, Cedex, France.

Macromolecular Rapid Communications

|March 27, 2018

Summary

Researchers synthesized linear ABC triblock terpolymers of polystyrene, poly(2-vinylpyridine), and polyisoprene. Using solvent vapor annealing, these polymers self-assembled into a core-shell double gyroid structure in thin films.

Keywords:

Steglich esterification anionic polymerization core-shell double gyroid structure self-assembly thin films

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Area of Science:

Polymer Chemistry
Materials Science
Nanotechnology

Background:

Linear ABC triblock terpolymers offer complex self-assembly possibilities.
Controlling nanostructure formation in thin films is crucial for advanced materials.

Purpose of the Study:

To synthesize well-defined linear ABC triblock terpolymers.
To investigate the self-assembly of these terpolymers into nanostructures.
To explore the formation of specific thin-film morphologies.

Main Methods:

Anionic polymerization to create functionalized block copolymers.
Steglich esterification for metal-free coupling of polymer blocks.
Solvent vapor annealing (SVA) to induce self-assembly in thin films.

Main Results:

Successfully synthesized polystyrene-block-poly(2-vinylpyridine)-block-polyisoprene (PS-b-P2VP-b-PI) terpolymers.
Achieved self-assembly into a core-shell double gyroid (Q230) structure via SVA.
Observed various crystallographic plane orientations at the polymer-air interface, dependent on film thickness.

Conclusions:

A straightforward, metal-free synthesis route yields well-defined terpolymers.
Solvent vapor annealing effectively directs frustrated terpolymers into complex nanostructures.
Thin-film thickness influences the orientation of the self-assembled gyroid structure.