Journal ArticleDOI
"Flex-activated" mechanophores: using polymer mechanochemistry to direct bond bending activation.
TLDR
Studies in mechanochemical transduction that probe the activation of bonds orthogonal to an elongated polymer main chain are described, a first step toward mechanophores capable of releasing side-chain functionalities without inherently compromising the overall macromolecular architecture.Abstract:
We describe studies in mechanochemical transduction that probe the activation of bonds orthogonal to an elongated polymer main chain. Compression of mechanophore-cross-linked materials resulted in the release of small molecules via cleavage of covalent bonds that were not integral components of the elongated polymer segments. The reactivity is proposed to arise from the distribution of force through the cross-linking units of the polymer network and subsequent bond bending motions that are consistent with the geometric changes in the overall reaction. This departure from contemporary polymer mechanochemistry, in which activation is achieved primarily by force-induced bond elongation, is a first step toward mechanophores capable of releasing side-chain functionalities without inherently compromising the overall macromolecular architecture.read more
Citations
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Additive manufacturing with a flex activated mechanophore for nondestructive assessment of mechanochemical reactivity in complex object geometries
TL;DR: In this paper, the authors used digital light processing additive manufacturing (DLP-AM) to produce mechanochemically responsive test specimens from custom photoresin formulations, wherein designer, flex activated mechanophores enable quantitative assessment of the total mechanophore activation in the specimen.
Journal ArticleDOI
Proactively modulating mechanical behaviors of materials at multiscale for mechano-adaptable devices
TL;DR: Mechano-adaptable materials and devices that can respond as pre-designed have realized better electrical performance, human interaction, long-term sustainability, and even higher efficiency.
Journal ArticleDOI
Investigations in Fundamental and Applied Polymer Mechanochemistry
Journal ArticleDOI
Mechanochemical Activation of Polymer-Embedded Photoluminescent Benzoxazole Moieties
TL;DR: In this paper, a mechanofluorophore based on an aliphatic ester of 2-(2′-hydroxyphenyl)benzoxazole was investigated.
Journal ArticleDOI
Rhodamine-Functionalized Mechanochromic and Mechanofluorescent Hydrogels with Enhanced Mechanoresponsive Sensitivity
TL;DR: A novel rhodamine (Rh) mechanophore-based mechanoresponsive micellar hydrogel with excellent mechanochromic and mechanofluorescent properties with outstanding properties of acidichromism and acidifluorochromism is described.
References
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Journal ArticleDOI
Force-induced activation of covalent bonds in mechanoresponsive polymeric materials
Douglas A. Davis,Andrew Hamilton,Jinglei Yang,Jinglei Yang,Lee D. Cremar,Dara Van. Gough,Stephanie L. Potisek,Mitchell T. Ong,Paul V. Braun,Todd J. Martínez,Todd J. Martínez,Scott R. White,Jeffrey S. Moore,Nancy R. Sottos +13 more
TL;DR: It is found that pronounced changes in colour and fluorescence emerge with the accumulation of plastic deformation, indicating that in these polymeric materials the transduction of mechanical force into the ring-opening reaction is an activated process.
Journal ArticleDOI
Mechanically-induced chemical changes in polymeric materials
Mary M. Caruso,Douglas A. Davis,Qilong Shen,Susan A. Odom,Nancy R. Sottos,Scott R. White,Jeffrey S. Moore +6 more
TL;DR: The purpose of this review is to broadly survey the mechanical to chemical relationships between synthetic polymers, and to consider the I-O relationship as an energy transduction process for designing stimuli-responsive materials.
Journal ArticleDOI
Mechanochemistry: the mechanical activation of covalent bonds.
TL;DR: A survey of the classical works in mechanochemistry is given and the key mechanochemical phenomena into perspective with recent results from atomic force microscopy and quantum molecular dynamics simulations are put into perspective.
Journal ArticleDOI
From mechanism to mouse: a tale of two bioorthogonal reactions.
TL;DR: Work in the laboratory led to the development of two bioorthogonal transformations that exploit the azide as a small, abiotic, and bioinert reaction partner: the Staudinger ligation and strain-promoted azide–alkyne cycloaddition.
Journal ArticleDOI
Mechanical processes in biochemistry.
TL;DR: This review provides the conceptual framework to understand the role of mechanical force in biochemistry.