Oxazine mechanophore
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... WebApr 8, 2024 · The OX-2 mechanophore has a significantly higher B/G ratio than the OX-1 at 0% strain. When the strain was increased from 0% to 200%, the B/G ratio in the OX-2 initially decreased because of the Poisson effect, and then increased because this effect is offset …
Oxazine mechanophore
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WebMar 11, 2024 · Oxazines, which can toggle between states in response to triggers like pH, have a much simpler, faster switching mechanism than spiropyrans, which rely on … 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, …
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 ... 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 ...
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. WebJul 24, 2024 · Mechanochromic hydrogels, a new class of stimuli-responsive soft materials, have potential applications in a number of fields such as damage reporting and stress/strain sensing. We prepared a novel mechanochromic hydrogel using a strategy that has been developed to prepare dual-network (DN) hydrogels. A hydrophobic rhodamine derivative …
WebWe report the concept, mechanochemical dynamic therapy (MDT), that utilizes remote, ultrasound-triggered mechanophore activation to enable anticancer activities. We …
WebThis 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 … イラスト 素材 花束WebOxazine and spirooxazine dyes (Fig. 12.1) are valuable photochromic materials that play an important role in many technologies [1-10].Recently, Mokhtari and coworkers [11] reported … pacchetti turistici napoliWebWhen 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. pacchetti turistici londraWebMulti-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 イラスト 素材 表情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. イラスト素材集WebMay 5, 2024 · Oxazine-based mechanophore system (A) Chemical structure of OX-1, OX-2, and OX-3 regioisomers. (B) Optical images of OX-1-containing PDMS film before (top) … pacchetti turistici siciliaWebSep 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. イラスト素材集 無料