chirality


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chirality

 [ki-ral´ĭ-te]
the property of handedness, of not being superimposable on a mirror image; the handedness of an asymmetric molecule, as specified by its optical rotation or absolute configuration.

chi·ral·i·ty

(kī-ral'i-tē),
The property of nonidentity of an object with its mirror image; used in chemistry with respect to stereochemical isomers.
[G. cheir, hand]

chirality

(kī-răl′ĭ-tē)
n.
The aspect of a structure or property, such as the configuration of a molecule or the spin of a particle, that renders that structure or property distinguishable from its mirror image or symmetrical opposite. Also called handedness.
The left- or right-sidedness of virtually the entirety of the physical universe, from elementary particles—e.g., electrons and molecules—to highly complex organisms
Organic chemistry The 3-D conformation of a molecule, which has an either left-handed (levo- or l-) orientation, as do most molecules in functioning biologic systems, or right-handed (dextro- or d-) orientation

chi·ral·i·ty

(kī-ral'i-tē)
The property of nonidentity of an object with its mirror image; used in chemistry with respect to stereochemical isomers.
[G. cheir, hand]

chirality

The state of two molecules having identical structure except that they display ‘handedness’ (as in the right and left hand) and are mirror images of one another. Such pairs of molecules are also known as enantiomers or optical isomers. When dissolved in a fluid they rotate a plane-polarized beam in opposite directions.

chirality

(of STEREOISOMERS) the property of ‘handedness’ (right- or left-handedness) of a molecule, such that the mirror image cannot coincide exactly with the actual image.
References in periodicals archive ?
Ling, Enantiomeric Pair of Copper (II) Polypyridyl-Alanine Complexes: Effect of Chirality on Their Interaction with Biomolecules, J.
Scattering pattern is observed for chirality parameter, height, and correlation length of the Gaussian rough surface.
It is worth of noticing that, among other alternatives, three-dimensional chirality may be achieved by means of planar structures, if several layers of the structure are used, through electromagnetic coupling between the different layers [20-26].
We utilize a 3D chirality assay to observe the biased rotation of hESCs and derived lineages to determine the stages where chiral bias becomes apparent and if this bias corresponds to biases in established cell lines of a similar phenotype.
The researchers have discovered a way to control the chirality of the vortex domain wall using an electric field.
Saito et al., "Effect of the growth temperature on the diameter distribution and chirality of single-wall carbon nanotubes," Physical Review Letters, vol.
In this scope, wave propagation in anisotropic chiral medium is modeled and studied where tensors of chirality, permittivity, and permeability are diagonal.
where the chirality operator [[GAMMA].sub.7] corresponds to the Hodge-dual operator * : [[OMEGA].sup.k] (M) [right arrow] [[OMEGA].sup.6-k] (M).
Chirality, the title of his current exhibition at the National Academy of Sciences, refers to a property of asymmetry important in several branches of mathematics and science including genetics and biochemistry.
According to Yakovlev, the small but measureable effect is due to a geometric property of the glucose molecule known as chirality, which results in a glucose molecule absorbing light in a specific way.
It covers the historical background of macrocyclic compounds, then the fundamental properties, characteristic features, and advantages of pillararenes, such as their high yield synthesis and highly symmetrical structures, versatile functionality, conformation, planar chirality, host-guest properties, and assembled structures, and applications to supramolecular polymers, interlocked molecules, supramolecular assemblies, hybrid materials, and biomedical applications, as well as pillararene-related macrocyclic compounds.
Additional information can be encoded in the hologram by designing and arranging the nanostructures to respond differently to the chirality (sometimes referred to as handedness) of the polarised incident light.