Oxazine mechanophore
WebMar 1, 2024 · 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 ... WebNov 7, 2024 · Tensile forces exerted on terminal methyl carbons of OX regioisomers drive their thermodynamic (C) In situ monitoring the B/G ratio change (solid lines) of PDMS specimens incorporating various...
Oxazine mechanophore
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WebA new approach to cyclophane-based supramolecular mechanophores is presented. We report a mechanically responsive cyclic motif that contains two fluorescent 1,6-bis (phenylethynyl)pyrene moieties that are capable of forming intramolecular excimers. WebSep 25, 2024 · Stimuli-responsive polymers that release small molecules under mechanical stress are appealing targets for applications ranging from drug delivery to sensing. Here, we describe a modular mechanophore design platform for molecular release via a mechanically triggered cascade reaction.
WebWe report the concept, mechanochemical dynamic therapy (MDT), that utilizes remote, ultrasound-triggered mechanophore activation to enable anticancer activities. We … WebJun 8, 2024 · For example, the spiropyran mechanophore features a low-threshold force for activation (typically around 200 pN) 19,130,135, yet, only a small fraction of mechanochromophores present are activated ...
WebWhen the mechanophore polymers are subjected to loads, the bonds between the chain are impacted and a color change reaction is triggered. Scientists utilized a new technique known as oxazine structure to achieve the reversible behavior of the material. WebSome mechanophores display a distinct optical (mechanochromic) response upon covalent bond scission, such as a colour change or a change of the photoluminescence properties. 5,8,10 Examples of such mechanophores that have been widely used for stress sensing in polymers include spiropyrans, 11–13 1,2-dioxetans, 14–17 diarylbibenzofuranones, …
WebMaleimide–anthracene mechanophores located at the interface between poly (glycidyl methacrylate) (PGMA) polymer brushes and Si wafer surfaces were activated locally using atomic force microscopy (AFM) probes to deliver mechanical stimulation.
WebJan 5, 2024 · In this case, to examine the mechanical forces at play during crystallization, they used a radical-type mechanophore called "TASN," which breaks down and emits fluorescence when subjected to ... fj ros fortalezaWebMechanophores are molecular units that produce a physical or chemical response when an applied mechanical force brings about a structural rearrangement (such as a … fjp fencing kelmscottWebOxaprozin is also used to relieve pain, tenderness, swelling, and stiffness caused by juvenile rheumatoid arthritis in children 6 years of age and older. Oxaprozin is in a class of … fjqzlhhWebMulti-Mechanophore Graft Polymers: Mechanochemical Reactions at Backbone-Arm Junctions. ... Yakelis, N. A.; Boydston, A. J. 1,2-Oxazine Linker as a Thermal Trigger for Self-Immolative Polymers. Polymer 2014, 55, 5980-5985. Comparison of Mechanochemical Chain Scission Rates for Linear Versus Three-Arm Star Polymers in Strong Acoustic Fields fjp salt lake cityWebThis is particularly important for early reporting of damage and wear, for which the optical signal from the mechanophore should accurately reflect bulk bond scission. In this article, we develop and analyze a general theory for the quality of optical mechanoreporting by mechanophores in soft materials, based on the Bell‐Evans theory of bond ... fj rallyeWebA fundamental understanding of not only how polymer topology may affect mechanophore activation in general but also the regiochemical application of force across the oxazine itself was explored. Stimuli-responsive materials is an area of significant research with a broad scope of applications in fields such as drug delivery, self-healing ... fjptez.classWebWhen the mechanophore polymers are subjected to loads, the bonds between the chain are impacted and a color change reaction is triggered. Scientists utilized a new technique known as oxazine structure to achieve the reversible behavior of the material. fjs abflüge