Light-Induced Living Polymer Networks with Adaptive Functional Properties.

Autor: Wei S; Department of Chemistry, Columbia University, New York, NY, 10027, USA., Smith-Jones J; Department of Chemistry, University of Washington, Seattle, WA, 98195, USA., Lalisse RF; Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA., Hestenes JC; Program of Materials Science and Engineering, Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, 10027, USA., Chen D; NSF Center for the Chemistry of Molecularly Optimized Networks, Duke University, Durham, NC, 27708, USA.; Thomas Lord Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, 27708, USA., Danielsen SPO; NSF Center for the Chemistry of Molecularly Optimized Networks, Duke University, Durham, NC, 27708, USA.; Thomas Lord Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, 27708, USA., Bell RC; Department of Chemistry, University of Washington, Seattle, WA, 98195, USA., Churchill EM; Department of Chemistry, Columbia University, New York, NY, 10027, USA., Munich NA; Department of Chemistry, Barnard College, New York, NY, 10027, USA., Marbella LE; Department of Chemical Engineering, Columbia University, New York, NY, 10027, USA., Gutierrez O; Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA., Rubinstein M; NSF Center for the Chemistry of Molecularly Optimized Networks, Duke University, Durham, NC, 27708, USA.; Thomas Lord Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, 27708, USA.; Departments of Chemistry, Biomedical Engineering, and Physics, Duke University, Durham, NC, 27708, USA.; Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, 001-0021, Japan., Nelson A; Department of Chemistry, University of Washington, Seattle, WA, 98195, USA., Campos LM; Department of Chemistry, Columbia University, New York, NY, 10027, USA.
Jazyk: angličtina
Zdroj: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2024 Jun; Vol. 36 (26), pp. e2313961. Date of Electronic Publication: 2024 Apr 19.
DOI: 10.1002/adma.202313961
Abstrakt: The advent of covalent adaptable networks (CANs) through the incorporation of dynamic covalent bonds has led to unprecedented properties of macromolecular systems, which can be engineered at the molecular level. Among the various types of stimuli that can be used to trigger chemical changes within polymer networks, light stands out for its remote and spatiotemporal control under ambient conditions. However, most examples of photoactive CANs need to be transparent and they exhibit slow response, side reactions, and limited light penetration. In this vein, it is interesting to understand how molecular engineering of optically active dynamic linkages that offer fast response to visible light can impart "living" characteristics to CANs, especially in opaque systems. Here, the use of carbazole-based thiuram disulfides (CTDs) that offer dual reactivity as photoactivated reshuffling linkages and iniferters under visible light irradiation is reported. The fast response to visible light activation of the CTDs leads to temporal control of shape manipulation, healing, and chain extension in the polymer networks, despite the lack of optical transparency. This strategy charts a promising avenue for manipulating multifunctional photoactivated CANs in a controlled manner.
(© 2024 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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