A Fe-ion cross-linked carboxymethyl cellulose, Fe-CMC, redox-active gel exhibiting dissipative, transient stiffness properties is introduced. Chemical or photosensitized reduction of the higher-stiffness Fe-CMC to the lower-stiffness Fe-CMC gel, accompanied by the aerobic reoxidation of the Fe-CMC matrix, leads to the dissipative, transient stiffness, functional matrix. The light-induced, temporal, transient release of a load (Texas red dextran) and the light-triggered, transient mechanical bending of a poly--isopropylacrylamide (p-NIPAM)/Fe-CMC bilayer construct are introduced, thus demonstrating the potential use of the dissipative Fe-CMC gel for controlled drug release or soft robotic applications.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11009950 | PMC |
| http://dx.doi.org/10.1021/jacs.4c00625 | DOI Listing |
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