نتایج جستجو برای: achiral
تعداد نتایج: 1375 فیلتر نتایج به سال:
A light-driven nanoscale chiral molecular switch was found to impart its chirality to an achiral liquid crystal host to form a self-organized, optically tunable helical superstructure capable of fast and reversible phototuning of the structural reflection across the entire visible region.
Photocyclodimerization of 2-anthracenecarboxylate tethered to a cyclic nigerosylnigerose scaffold gave a single chiral cyclodimer (out of two achiral and two chiral stereoisomers) in 99% optical and 96% chemical yields, achieving the ultimate stereocontrol of the supramolecular photochirogenesis in aqueous solution at 25 °C.
We report single-molecule level STM observations of chiral complexes generated by the assembly of achiral components at a metal surface. Following co-deposition of iron atoms and 1,3,5-tricarboxylic benzoic acid (trimesic acid, TMA) on Cu(100) in ultrahigh vaccum, TMA molecules react with the metal centers, and metal-ligand interactions stabilize R and S chiral complexes which are clearly disti...
Chiral interactions are prevalent in nature, driving a variety of biochemical processes. Discerning the two non-superimposable mirror images chiral molecule, known as enantiomers, requires interaction with reagent handedness. Circularly polarized light beams often used reagent. Here we demonstrate efficient sensitivity linearly helical carrying an orbital angular momentum ±lħ, which handedness ...
Abstract Hybrid silica‐organic nanohelices are used to organize a large variety of nonchiral small organic molecules or inorganic anions nanometer‐sized assemblies. Such chiral organization achiral induces chiroptical properties as detected by vibrational electronic circular dichroism (CD), well from circularly polarized luminescence (CPL).
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