optical activity


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optical activity

n. Chemistry
A property caused by asymmetric molecular structure that enables a substance to rotate the plane of incident polarized light.

optically active adj.

optical activity

n
(Chemistry) the ability of substances that are optical isomers to rotate the plane of polarization of a transmitted beam of plane-polarized light

op′tical activ′ity


n.
the ability of a substance to rotate the plane of polarization of plane-polarized light.
[1875–80]
Translations
activité optique
References in periodicals archive ?
Tenders are invited for Polarization optics for uv raman optical activity
He covers the Raman effect, normal mode vibration, the elucidation of bond polarizabilities, the Raman virtual states, more applications, the extension to Raman optical activity, more applications on Raman optical activity, intramolecular enantiomerism, the unified classical theory for Raman optical activity and vibrational circular dichromism.
To affirm this possibility, the anionic polymerization of TrMA was carried out with the (-)-sparteine-n-butyllithium ((-)-Sp-BuLi) complex at -78 [degrees]C using a quartz vacuum vessel with optical windows, which was placed in a polarimeter for the measurement of optical activity during the polymerization (Fig.
Optical activity can be generated by two main factors related to the polymer structure.
developed a helical chiral polymer such as polylactic acid with a weight-average molecular weight of 50,000-1,000,000, optical activity, and 20-80% crystallinity, showing enhanced piezoelectricity.
In recent years, the research in chiral metamaterials (CMMs) has been growing rapidly due to their special electromagnetic properties which are optical activity and circular dichroism [6-12].
Some specific subjects include magneto-optic eddy current introscopy based on garnet films, fractal analysis of surface topography of solid oxide fuel cell materials, optical activity of langatate crystals, and mechanical properties of free-standing porous anodic alumina films.
Recently, more and more interest has been focused on the CMMs structures due to their attractive physical properties such as giant optical activity, strong circular dichroism (CD) effect, and negative refractive index (NRI) [2-10].
aHealth consultation in an optics is an optical activity.
Among his topics are quantum dynamics, third-order response spectroscopy, two-dimensional photon echo spectroscopy, chemical exchange, applications of two-dimensional vibrational spectroscopy, and linear and non-linear optical activity spectroscopy.
Differences include altered magnetic properties, altered electrical or optical activity, increased structural integrity, and enhanced chemical and biological properties.
In contrast, polarimetry, a method for measuring optical activity, does not require knowledge of the structure being analyzed.