Search Results - "Craig, Stephen L."
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A Latent Mechanoacid for Time-Stamped Mechanochromism and Chemical Signaling in Polymeric Materials
Published in Journal of the American Chemical Society (08-01-2020)“…Mechanically coupled proton transduction offers potential for stress-responsive polymeric materials whose properties can be switched via acid-triggered…”
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Large-Area Cross-Aligned Silver Nanowire Electrodes for Flexible, Transparent, and Force-Sensitive Mechanochromic Touch Screens
Published in ACS nano (25-04-2017)“…Silver nanowire (AgNW) networks are considered to be promising structures for use as flexible transparent electrodes for various optoelectronic devices. One…”
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Cephalopod-inspired design of electro-mechano-chemically responsive elastomers for on-demand fluorescent patterning
Published in Nature communications (16-09-2014)“…Cephalopods can display dazzling patterns of colours by selectively contracting muscles to reversibly activate chromatophores – pigment-containing cells under…”
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4
Force-Rate Characterization of Two Spiropyran-Based Molecular Force Probes
Published in Journal of the American Chemical Society (20-05-2015)“…The mechanically accelerated ring-opening reaction of spiropyran to a colored merocyanine provides a useful method by which to image the molecular scale…”
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Quantitative Adjustment to the Molecular Energy Parameter in the Lake–Thomas Theory of Polymer Fracture Energy
Published in Macromolecules (09-04-2019)“…We present a conceptual framework for adding molecular details of chain extension and force-coupled bond dissociation to the Lake–Thomas model of tear energy…”
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Mechanical gating of a mechanochemical reaction cascade
Published in Nature communications (16-11-2016)“…Covalent polymer mechanochemistry offers promising opportunities for the control and engineering of reactivity. To date, covalent mechanochemistry has largely…”
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Covalent Mechanochemistry and Contemporary Polymer Network Chemistry: A Marriage in the Making
Published in Journal of the American Chemical Society (18-01-2023)“…Over the past 20 years, the field of polymer mechanochemistry has amassed a toolbox of mechanophores that translate mechanical energy into a variety of…”
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A Hierarchical Nanoparticle‐in‐Micropore Architecture for Enhanced Mechanosensitivity and Stretchability in Mechanochromic Electronic Skins
Published in Advanced materials (Weinheim) (01-06-2019)“…Biological tissues are multiresponsive and functional, and similar properties might be possible in synthetic systems by merging responsive polymers with…”
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Molecular engineering of mechanophore activity for stress-responsive polymeric materials
Published in Chemical science (Cambridge) (01-01-2015)“…Force reactive functional groups, or mechanophores, have emerged as the basis of a potential strategy for sensing and countering stress-induced material…”
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Relative Mechanical Strengths of Weak Bonds in Sonochemical Polymer Mechanochemistry
Published in Journal of the American Chemical Society (26-08-2015)“…The mechanical strength of scissile chemical bonds plays a role in material failure and in the mechanical activation of latent reactivity, but quantitative…”
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Generalizing metallocene mechanochemistry to ruthenocene mechanophores
Published in Chemical science (Cambridge) (21-05-2019)“…Recent reports have shown that ferrocene displays an unexpected combination of force-free stability and mechanochemical activity, as it acts as the preferred…”
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Molecular Characterization of Polymer Networks
Published in Chemical reviews (28-04-2021)“…Polymer networks are complex systems consisting of molecular components. Whereas the properties of the individual components are typically well understood by…”
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Enhanced polymer mechanical degradation through mechanochemically unveiled lactonization
Published in Nature communications (05-10-2020)“…The mechanical degradation of polymers is typically limited to a single chain scission per triggering chain stretching event, and the loss of stress transfer…”
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14
Distal conformational locks on ferrocene mechanophores guide reaction pathways for increased mechanochemical reactivity
Published in Nature chemistry (01-01-2021)“…Mechanophores can be used to produce strain-dependent covalent chemical responses in polymeric materials, including stress strengthening, stress sensing and…”
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Substituent Effects and Mechanism in a Mechanochemical Reaction
Published in Journal of the American Chemical Society (10-10-2018)“…We report the effect of substituents on the force-induced reactivity of a spiropyran mechanophore. Using single molecule force spectroscopy, force-rate…”
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Mechanochemical Strengthening of a Multi-mechanophore Benzocyclobutene Polymer
Published in ACS macro letters (18-08-2015)“…The mechanical stresses that materials experience during use can lead to aging and failure. Recent developments in covalent mechanochemistry have provided a…”
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Mechanism Dictates Mechanics: A Molecular Substituent Effect in the Macroscopic Fracture of a Covalent Polymer Network
Published in Journal of the American Chemical Society (17-03-2021)“…The fracture of rubbery polymer networks involves a series of molecular events, beginning with conformational changes along the polymer backbone and…”
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Mechanochemical strengthening of a synthetic polymer in response to typically destructive shear forces
Published in Nature chemistry (01-09-2013)“…High shear stresses are known to trigger destructive bond-scission reactions in polymers. Recent work has shown that the same shear forces can be used to…”
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Scaling Laws in Supramolecular Polymer Networks
Published in Macromolecules (12-07-2011)“…The linear rheological properties of networks formed by adding bis-Pd(II) cross-linkers to poly(4-vinylpyridine) (PVP) solution are examined, and the scaling…”
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Reactivity and Mechanism of a Mechanically Activated anti-Woodward–Hoffmann–DePuy Reaction
Published in Journal of the American Chemical Society (16-09-2015)“…Mechanical forces, applied via covalent polymer mechanochemistry, have been used to bias reaction pathways and activate otherwise inaccessible reactions. Here,…”
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