Chiroptical switching
WebApr 5, 2024 · Although the role of chirality in contemporary chemistry, pharmacy, and material science constantly increases, the chiroptical electronic circular dichroism spectroscopy (ECD) is still one of the techniques less frequently combined with the electrochemical methods. WebFeb 1, 2024 · Switching of the chiroptical properties of a molecular universal joint was triggered by sodium ion resulting from the synergistically stepwise complexing. Download : Download high-res image (151KB) Download : Download full-size image
Chiroptical switching
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WebFeb 23, 2010 · This feature article gives a general introduction to the phenomenon of supramolecular chirogenesis using the most representative examples of different chirogenic assemblies on the basis of ethane-bridged bis-porphyrinoids. Supramolecular chirogenesis is based upon a smart combination of supramolecular chemistry and chirality sciences … WebAug 31, 2024 · A chirality transfer from the chiral sugar unit to azobenzene was observed by circular dichroism (CD). DFT and TD-DFT calculations were performed to calculate the optimal geometry and the theoretical absorption and CD spectra.
WebA chiral supramolecular assembly exhibiting redox-induced changes in its chiroptical properties was prepared using viologen-modified glutamide (G-V2+) derivatives. Achiral viologen moieties in the G-V2+ assembly were chirally orientated by glutamide groups, affording a unique orange-colored solution, with a visible WebApr 30, 2004 · A dinuclear self-assembled cationic macrocycle based on Pt(II)-N(pyridine) coordinative bonds and having competitive triflate anions, as metal counterions, is used in the construction of [2]rotaxane and [2]pseudorotaxane architectures assisted by hydrogen bonding. The kinetic lability of the Pt(II)-N(pyridine) coordinative bond controls the …
WebSep 24, 2005 · One of the first examples of a property change achieved through a controlled large-amplitude translational motion in a rotaxane is described; a novel type of chiroptical switch is described, in which light-induced translation of the macrocycles along the thread of a [2]rotaxane produces a strong induced circular dichroism (ICD) response only when … WebMar 6, 2024 · The stepwise assembly process successfully facilitated an “off–off–on” chiroptical switching process of a pyrene luminophore controlled by the concentration of Zn 2+. The resulting pyrene-bridged helicates exhibit high performance in terms of a dissymmetry factor of circular dichroism ( g CD = 0.006) and circularly polarized ...
Web8.Guocheng Zhang, Minghua Liu*, Acidichromism and chiroptical switch based on the self-assembly of a cyanine dye on the PLGA/PAH LbL film, J. Mater. Chem ., 2009 , 19, 1471-1476. 9.Li Zhang, Minghua Liu*, Supramolecular Chirality and Chiral Inversion of Tetraphenylsulfonato Porphyrin Assemblies on Optically Active Polylysine, J. Phys. …
WebJul 26, 2024 · Significant chiroptical responses could be generated by chiral coupling of achiral plasmonic nanoparticles, or originated from intrinsically chiral plasmonic nanoparticles. Here we create dimeric plasmonic metamolecules possessing both chiral coupling between nanoparticles and intrinsic chiroptical responses derived from … photon energy to wavelength converterWebApr 7, 2024 · Synthetic foldamers with stimuli-responsive helical sense are promising candidates for chiroptical molecular switches, which are amenable with fabrication of functional materials for data storage. 21–23 As an example, the seminal report on chiroptical molecular switches from Feringa showed the conversion between left- and … photon export thin films \\u0026 patents slWebMar 6, 2024 · Upon addition of more Zn 2+, chiroptically active coordination helicates ( [ (L (R or S)) 3 (Zn 2+) 2 ]) are formed. The stepwise assembly process successfully … how much are private blood testsWebApr 3, 2024 · Chiroptical switching in the azobenzene-based self-locked [1]rotaxane by solvent and photoirradiation Xin Song, Xuefeng Zhu, Shengfu Wu, Wenzhuo Chen, Wei … photon fiberWebOct 22, 2024 · This chiroptical quinone/hydroquinone redox system combines attractive features such as simple set-up, use of inexpensive chemicals, short response time, … how much are prime membershipsWebSep 29, 2024 · These chiral switches are essential in controlling the directionality in molecular motors. Dynamic chiralities are equally crucial in switchable stereoselectivity, … photon export thin films \u0026 patents slWebMar 23, 2000 · An ideal optically active helical chromophoric polymer comprising a flexible rodlike silicon main chain and enantiopure alkyl side chains, poly{(S)-3,7-dimethyloctyl-3-methylbutylsilylene}, underwent a thermo-driven helix−helix transition at −20 °C in isooctane. The transition characteristics, including transition temperature, transition width, the … photon exit games