Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 143, Issue 42, Pages 17337-17343Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.1c05923
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Funding
- Clarkson University
- A*STAR under its AME Program [A2083c0051]
- Ministry of Education, Singapore [MOE-MOET2EP10120-0007]
- National Science Foundation [1925596, DMR 1847786]
- Office of Information Technology
- ACRES cluster
- Office of Advanced Cyberinfrastructure (OAC)
- Direct For Computer & Info Scie & Enginr [1925596] Funding Source: National Science Foundation
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A near-infrared mechanophore was incorporated into a polymeric chain to demonstrate force-induced NIR chromism. The mechanophore exhibited NIR mechanochromism in solution, thin-film, and bulk states, with potential applications in mechanical force sensing, damage detection, bioimaging, and biomechanics.
A near-infrared (NIR) mechanophore was developed and incorporated into a poly(methyl acrylate) chain to showcase the first force-induced NIR chromism in polymeric materials. This mechanophore, based on benzo[1,3]oxazine (OX) fused with a heptamethine cyanine moiety, exhibited NIR mechanochromism in solution, thin-film, and bulk states. The mechanochemical activity was validated using UV-vis- NIR absorption/fluorescence spectroscopies, gel permeation chromatography (GPC), NMR, and DFT simulations. Our work demonstrates that NIR mechanochromic polymers have considerable potential in mechanical force sensing, damage detection, bioimaging, and biomechanics.
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