chromophore

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chromophore

[′krō·mə‚fȯr]
(chemistry)
An arrangement of atoms that gives rise to color in many organic substances.
References in periodicals archive ?
crosslinked chromophoric copolymers using a thermal Huisgen reaction.
Based on the results obtained it can be concluded that although adsorption plays an important role in the decolorization process, assimilation of some chromophoric material is also taking place.
Since they do not contain chromophoric groups, polyethylene and polypropylene do not absorb UV light above 220 nm (0.
Degradation of pulp constituents, mainly hemicellulose and lignin, leads to the generation of chromophoric units [5, 6, 10, 17, 19].
Such processes occur predominantly at chromophoric groups such as carbonyls or other [pi]-electron containing groups.
During this event, light generates free radicals in wood by rapidly interacting with oxygen to produce hydroperoxides, which are easily decomposed to produce chromophoric groups such as carbonyls, carboxyls, quinones, peroxides, hydroperoxides, and conjugated double bonds (Feist and Hon 1984).
Following an introduction to nomenclature and general mechanisms, chapters discuss mechanisms of CTI around the carbon-carbon double bonds via the triplet state; retinal binding proteins; non-retinal chromophoric proteins; fatty acids and phospholipids; in silico dynamic studies in organic and biological systems; chemical aspects of the restricted rotation of esters, amides, and related compounds; amide CTI in peptides and proteins; enzymes catalyzing peptide bond CTI; tailoring amides; peptidyl prolyl isomerases as new targets for novel therapeutics; and metal complexes.
The highly localized excitation source has provided resolution levels of 15 to 25 nm, making it possible, for example, to resolve tightly packed chromophoric membrane proteins.
Peelable solder masks that contain insoluble pigments instead of soluble dyestuffs should be favoured for electroplating processes since leaching of such chromophoric substances is impossible.
Additionally, in the chemistry it is known that many oxidizing agents (such as NOx) react with phenolic antioxidants to form quinone structures, which are chromophoric agents.
It is known that Ellman's reagent reacts with cysteine to form Ellman's anion, which is chromophoric, giving it an intense yellow hue.