DC Field | Value | Language |
---|---|---|
dc.contributor.author | Nam, Jiyun | ko |
dc.contributor.author | Yoo, Changsu | ko |
dc.contributor.author | Seo, Myungeun | ko |
dc.date.accessioned | 2024-05-29T13:00:13Z | - |
dc.date.available | 2024-05-29T13:00:13Z | - |
dc.date.created | 2024-05-09 | - |
dc.date.created | 2024-05-09 | - |
dc.date.issued | 2024-05 | - |
dc.identifier.citation | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.146, no.20, pp.13854 - 13861 | - |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.uri | http://hdl.handle.net/10203/319558 | - |
dc.description.abstract | Depolymerization breaks down polymer chains into monomers like unthreading beads, attracting more attention from a sustainability standpoint. When polymerization reaches equilibrium, polymerization and depolymerization can reversibly proceed by decreasing and increasing the temperature. Here, we demonstrate that such dynamic control of a growing polymer chain in a selective solvent can spontaneously modulate the self-assembly of block copolymer micellar nano-objects. Compared to polymerization-induced self-assembly (PISA), where irreversible growth of a solvophobic polymer block from the end of a solvophilic polymer causes micellization, polymerization/depolymerization-induced self-assembly presented in this study allows us to reversibly regulate the packing parameter of the forming block copolymer and thus induce reversible morphological transitions of the nano-objects by temperature swing. Under the coupled equilibria of polymerization with self-assembly, we found that demixing of the growing polymer block in a more selective solvent entropically facilitates depolymerization at a substantially lower temperature. Taking ring-opening polymerization of delta-valerolactone initiated from the hydroxyl-terminated poly(ethylene oxide) as a model system, we show that polymerization/depolymerization/repolymerization leads to reversible morphological transitions, such as rod-sphere-rod and fiber-rod-fiber, during the heating and cooling cycle and accompanied by changes in macroscopic properties such as viscosity, suggesting their potential as dynamic soft materials. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Polymerization/Depolymerization-Induced Self-Assembly under Coupled Equilibria of Polymerization with Self-Assembly | - |
dc.type | Article | - |
dc.identifier.wosid | 001225210600001 | - |
dc.identifier.scopusid | 2-s2.0-85193067129 | - |
dc.type.rims | ART | - |
dc.citation.volume | 146 | - |
dc.citation.issue | 20 | - |
dc.citation.beginningpage | 13854 | - |
dc.citation.endingpage | 13861 | - |
dc.citation.publicationname | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.identifier.doi | 10.1021/jacs.4c00612 | - |
dc.contributor.localauthor | Seo, Myungeun | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | RING-OPENING POLYMERIZATION | - |
dc.subject.keywordPlus | SOLUBILITY PARAMETERS | - |
dc.subject.keywordPlus | BLOCK-COPOLYMERS | - |
dc.subject.keywordPlus | GELS | - |
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