Dynamic reaction-induced phase separation in tunable, adaptive covalent networks.
Chem Sci
; 11(19): 5028-5036, 2020 May 01.
Article
en En
| MEDLINE
| ID: mdl-34122959
ABSTRACT
A series of catalyst-free, room temperature dynamic bonds derived from a reversible thia-Michael reaction are utilized to access mechanically robust dynamic covalent network films. The equilibrium of the thiol addition to benzalcyanoacetate-based Michael-acceptors can be directly tuned by controlling the electron-donating/withdrawing nature of the Michael-acceptor. By modulating the composition of different Michael-acceptors in a dynamic covalent network, a wide range of mechanical properties and thermal responses can be realized. Additionally, the reported systems phase-separate in a process, coined dynamic reaction-induced phase separation (DRIPS), that yields reconfigurable phase morphologies and reprogrammable shape-memory behaviour as highlighted by the heat-induced folding of a predetermined structure.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
Chem Sci
Año:
2020
Tipo del documento:
Article