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.
journal_name
Sci Advjournal_title
Science advancesauthors
Guerin G,Cruz M,Yu Qdoi
10.1126/sciadv.aaz7301subject
Has Abstractpub_date
2020-04-15 00:00:00pages
eaaz7301issue
16issn
2375-2548pii
aaz7301journal_volume
6pub_type
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