Chiroptical molecular switches
WebJan 31, 2012 · Chiroptical switches have found application in the detection of a multitude of different analytes with a high level of sensitivity and in asymmetric catalysis to offer switchable stereoselectivity. A wide range of scaffolds have been employed that respond to metals, small molecules, anions and other analytes. WebAbstract Efficient chiroptical molecular redox switches have been engineered that display multiple stable optically active forms, chemically reversible redox processes, and highly sensitive chiroptical responses.
Chiroptical molecular switches
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WebJul 3, 1991 · A promising new type of chiroptical switch has been created that has optical rotation values as output signals for the reversible process and showed fatigue resistance. Expand 4 Save Alert Resolution of sterically overcrowded ethylenes; a remarkable correlation between bond lengths and racemization barriers. B. Feringa, W. Jager, B. D. … WebThe molecular conformation of a bis-helicenic terpyridine system is strongly modified upon binding to Zn(II) ion, a process that is accom-panied by large changes in the optical and chiroptical properties. This system affords a new type of helicene-based chiroptical switching. The contribution of chiroptical molecular switches 1 to the field of
WebChiroptical Molecular Switches Ben L. Feringa Richard A. van Delden Nagatoshi Koumura , and Edzard M. Geertsema View Author Information Laboratory of Organic Chemistry, Stratingh Institute, University of Groningen, Nijenborgh 4, 9747 AG, … We would like to show you a description here but the site won’t allow us. pubs.acs.org WebShanzer et al. reported the first example of a redox-mediated chiroptical redox switch. The system was based on chemical triggering of iron translocation in triplestranded helical complexes (Fig. 10). 33 The design accommodated a single metal ion in one of two sites, either a “hard” binding N3O3 cavity presenting three hydroxamate moieties or a “soft” N6 …
WebA chiroptical molecular switch, based on these molecules, is presented in this paper. Cite Context in source publication Context 1 ... selective cis-trans isomerization simultaneously...
WebJan 3, 2002 · Abstract Controlled mechanical movement in molecular-scale devices has been realized in a variety of systems-catenanes and rotaxanes, chiroptical molecular switches, molecular ratchets and DNA-by exploiting conformational changes triggered by changes in redox potential or temperature, reversible binding of small molecules or ions, …
WebJul 25, 2024 · Chiroptical molecular photoswitches and motors based on overcrowded alkenes are a unique class of nanomachines that convert light and heat into directional … inamua stool softenerWebChiroptical switches, whose chiral optical signals such as optical rotatory dispersion (ORD), circular dichroism (CD) and circularly polarized luminescence (CPL) are reversibly interchangeable between two states, … inamura no hillary movieWebThe control of chirality by optical molecular switches offers intriguing prospects in the design of new materials. For example, photochemically induced stilbene-type cis-trans isomerization of 1 (see Figure) results simultaneously in reversal of the helicity. in a series circuit r 300 ohm l 0.9WebThe control of chirality by optical molecular switches offers intriguing prospects in the design of new materials. For example, photochemically induced stilbene-type cis-trans … inamte using my credit cardWebJul 27, 2011 · Chiroptical Molecular Switches. Dr. Wesley R. Browne. Stratingh Institute for Chemistry & Zernike Institute for Advanced Materials, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands. Search for more papers by this author. in a servile manner crosswordWebApr 7, 2024 · Besides, anions have also been utilized to regulate helical structures and conformations. 25–30 For example, chiroptical molecular switches based on oligo-indolocarbazole foldamers have been shown to alter their helical senses by anion binding and the solvent effect. 25–27 Very recently, anions were demonstrated to be able to … in a series circuit the current is alwaysWebSelect search scope, currently: articles+ all catalog, articles, website, & more in one search; catalog books, media & more in the Stanford Libraries' collections; articles+ journal articles & other e-resources in a series inverter