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Formation of 2D and 3D multi-tori mesostructures via crystallization-driven self-assembly.

ABSTRACT: The fabrication of three-dimensional (3D) objects by polymer self-assembly in solution is extremely challenging. Here, multi-tori mesostructures were obtained from the crystallization-driven self-assembly of a coil-crystalline block copolymer (BCP) in mixed solvents. The formation of these structures follows a multistep process. First, the BCP self-assembles into amorphous micrometer-large vesicles. Then, the BCP confined in these mesosized vesicles crystallizes. This second step leads to the formation of objects with shapes ranging from closed 3D multi-tori spherical shells to 2D toroid mesh monolayers, depending on the solvent mixture composition. This approach demonstrates how topological constraints induced by the specific interactions between coil-crystalline BCP and solvents can be used to prepare mesostructures of complex morphologies.

SUBMITTER: Guerin G

PROVIDER: S-EPMC7159922 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Formation of 2D and 3D multi-tori mesostructures via crystallization-driven self-assembly.

Guerin Gerald G Cruz Menandro M Yu Qing Q

Science advances 20200415 16

The fabrication of three-dimensional (3D) objects by polymer self-assembly in solution is extremely challenging. Here, multi-tori mesostructures were obtained from the crystallization-driven self-assembly of a coil-crystalline block copolymer (BCP) in mixed solvents. The formation of these structures follows a multistep process. First, the BCP self-assembles into amorphous micrometer-large vesicles. Then, the BCP confined in these mesosized vesicles crystallizes. This second step leads to the fo ...[more]

PMID: 32494620

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