Search Results - "Kouznetsova, Tatiana B."

A Latent Mechanoacid for Time-Stamped Mechanochromism and Chemical Signaling in Polymeric Materials by Lin, Yangju, Kouznetsova, Tatiana B, Craig, Stephen L

“…Mechanically coupled proton transduction offers potential for stress-responsive polymeric materials whose properties can be switched via acid-triggered…”
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Force-Rate Characterization of Two Spiropyran-Based Molecular Force Probes by Gossweiler, Gregory R, Kouznetsova, Tatiana B, Craig, Stephen L

“…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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Mechanical gating of a mechanochemical reaction cascade by Wang, Junpeng, Kouznetsova, Tatiana B., Boulatov, Roman, Craig, Stephen L.

“…Covalent polymer mechanochemistry offers promising opportunities for the control and engineering of reactivity. To date, covalent mechanochemistry has largely…”
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Enhanced polymer mechanical degradation through mechanochemically unveiled lactonization by Lin, Yangju, Kouznetsova, Tatiana B., Chang, Chia-Chih, Craig, Stephen L.

“…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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Distal conformational locks on ferrocene mechanophores guide reaction pathways for increased mechanochemical reactivity by Zhang, Yudi, Wang, Zi, Kouznetsova, Tatiana B., Sha, Ye, Xu, Enhua, Shannahan, Logan, Fermen-Coker, Muge, Lin, Yangju, Tang, Chuanbing, Craig, Stephen L.

“…Mechanophores can be used to produce strain-dependent covalent chemical responses in polymeric materials, including stress strengthening, stress sensing and…”
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Mechanism Dictates Mechanics: A Molecular Substituent Effect in the Macroscopic Fracture of a Covalent Polymer Network by Wang, Shu, Beech, Haley K, Bowser, Brandon H, Kouznetsova, Tatiana B, Olsen, Bradley D, Rubinstein, Michael, Craig, Stephen L

“…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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Reactivity and Mechanism of a Mechanically Activated anti-Woodward–Hoffmann–DePuy Reaction by Wang, Junpeng, Kouznetsova, Tatiana B, Craig, Stephen L

“…Mechanical forces, applied via covalent polymer mechanochemistry, have been used to bias reaction pathways and activate otherwise inaccessible reactions. Here,…”
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Understanding the Mechanochemistry of Ladder-Type Cyclobutane Mechanophores by Single Molecule Force Spectroscopy by Horst, Matías, Yang, Jinghui, Meisner, Jan, Kouznetsova, Tatiana B, Martínez, Todd J, Craig, Stephen L, Xia, Yan

“…We have recently reported a series of ladder-type cyclobutane mechanophores, polymers of which can transform from nonconjugated structures to conjugated…”
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Substituent Effects in Mechanochemical Allowed and Forbidden Cyclobutene Ring-Opening Reactions by Brown, Cameron L, Bowser, Brandon H, Meisner, Jan, Kouznetsova, Tatiana B, Seritan, Stefan, Martinez, Todd J, Craig, Stephen L

“…Woodward and Hoffman once jested that a very powerful Maxwell demon could seize a molecule of cyclobutene at its methylene groups and tear it open in a…”
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Single-Molecule Observation of a Mechanically Activated Cis-to-Trans Cyclopropane Isomerization by Wang, Junpeng, Kouznetsova, Tatiana B, Craig, Stephen L

“…The mechanochemical activation of cis-gem-difluorocyclopropane (cis-gDFC) mechanophore in toluene was characterized with single-molecule force spectroscopy…”
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Single-Molecule Activation and Quantification of Mechanically Triggered Palladium–Carbene Bond Dissociation by Razgoniaev, Anton O, Glasstetter, Logan M, Kouznetsova, Tatiana B, Hall, Kacey C, Horst, Matias, Craig, Stephen L, Franz, Katherine J

“…Metal-complexed N-heterocyclic carbene (NHC) mechanophores are latent reactants and catalysts for a range of mechanically driven chemical responses, but…”
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Mechanically Gated Degradable Polymers by Lin, Yangju, Kouznetsova, Tatiana B, Craig, Stephen L

“…Degradable polymers are desirable for the replacement of conventional organic polymers that persist in the environment, but they often suffer from the…”
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A backbone lever-arm effect enhances polymer mechanochemistry by Klukovich, Hope M., Kouznetsova, Tatiana B., Kean, Zachary S., Lenhardt, Jeremy M., Craig, Stephen L.

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Toughening hydrogels through force-triggered chemical reactions that lengthen polymer strands by Wang, Zi, Zheng, Xujun, Ouchi, Tetsu, Kouznetsova, Tatiana B, Beech, Haley K, Av-Ron, Sarah, Matsuda, Takahiro, Bowser, Brandon H, Wang, Shu, Johnson, Jeremiah A, Kalow, Julia A, Olsen, Bradley D, Gong, Jian Ping, Rubinstein, Michael, Craig, Stephen L

“…The utility and lifetime of materials made from polymer networks, including hydrogels, depend on their capacity to stretch and resist tearing. In gels and…”
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Facile mechanochemical cycloreversion of polymer cross-linkers enhances tear resistance by Wang, Shu, Hu, Yixin, Kouznetsova, Tatiana B, Sapir, Liel, Chen, Danyang, Herzog-Arbeitman, Abraham, Johnson, Jeremiah A, Rubinstein, Michael, Craig, Stephen L

“…The mechanical properties of covalent polymer networks often arise from the permanent end-linking or cross-linking of polymer strands, and molecular linkers…”
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Solvent Polarity Effects on the Mechanochemistry of Spiropyran Ring Opening by Lin, Yangju, Kouznetsova, Tatiana B., Foret, Alex G., Craig, Stephen L.

“…The spiropyran mechanophore (SP) is employed as a reporter of molecular tension in a wide range of polymer matrices, but the influence of surrounding…”
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Mechanochemistry of Cubane by Wang, Liqi, Zheng, Xujun, Kouznetsova, Tatiana B., Yen, Tiffany, Ouchi, Tetsu, Brown, Cameron L., Craig, Stephen L.

“…We report the mechanochemical reactivity of the highly strained pentacyclic hydrocarbon cubane. The mechanical reactivity of cubane is explored for three…”
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Single-Event Spectroscopy and Unravelling Kinetics of Covalent Domains Based on Cyclobutane Mechanophores by Bowser, Brandon H, Wang, Shu, Kouznetsova, Tatiana B, Beech, Haley K, Olsen, Bradley D, Rubinstein, Michael, Craig, Stephen L

“…Mechanochemical reactions that lead to an increase in polymer contour length have the potential to serve as covalent synthetic mimics of the mechanical…”
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Inducing and quantifying forbidden reactivity with single-molecule polymer mechanochemistry by Wang, Junpeng, Kouznetsova, Tatiana B., Niu, Zhenbin, Ong, Mitchell T., Klukovich, Hope M., Rheingold, Arnold L., Martinez, Todd J., Craig, Stephen L.

“…Forbidden reactions, such as those that violate orbital symmetry effects as captured in the Woodward–Hoffmann rules, remain an ongoing challenge for…”
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Mechanochemistry of Pterodactylane by Horst, Matías, Meisner, Jan, Yang, Jinghui, Kouznetsova, Tatiana B., Craig, Stephen L., Martínez, Todd J., Xia, Yan

“…Pterodactylane is a [4]-ladderane with substituents on the central rung. Comparing the mechanochemistry of the [4]-ladderane structure when pulled from the…”
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