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 ?
For example, one may predict that cells in an animal are likely to be light-sensitive if they express opsin, a type of G-protein-coupled receptor (GPCR) that binds a light-reactive molecule of retinal as a chromophore.
The high density of epidermal melanin in Fitzpatrick types IV-VI acts as a competitive chromophore against hemoglobin and oxyhemoglobin.
The monitoring of absorption and scattering coefficients that are strongly related to the concentration of chromophores in a skin with light-skin interaction based models is very crucial and is still an open-ended problem.
By engineering a virus that Belcher has worked with for years, the team was able to get it to bond with multiple synthetic chromophores -- or, in this case, organic dyes.
The skin chromophore maps are calculated from the four spectral images, and the perfusion map and fluorophore distribution map--from the video-images taken at green and ultraviolet illumination of the skin, respectively.
The science of NIRS hinges on some of the fundamental principles of pulse oximetry as they relate to the transmission of light through living tissues and the absorption of light by tissue chromophores (naturally occurring compounds that absorb light [e.
Among the topics are dye sensitized solar cells using natural dyes as chromophores, mesoporous photo-anodes for dye-sensitized solar cells, the effect of nanograss and annealing temperature on dye-sensitized solar cells based on titania nanotubes, an electrochemical impedance spectroscopic study of dye-sensitized solar cells sensitized with Begonia malabarica Lam.
UVA penetrates the skin more deeply and is absorbed by the chromophores which induce photodermatitis (5).
Hence, the study of these systems is receiving increasing attention, because an adequate mixture of the polymers and NLO chromophores can be used to optimize the performance of polymer-based systems, in a cheaper and quicker way compared with synthesizing new polymers.
6,7 As all these machines use melanin as a target chromophores, white and blond hair escape the photoepilation.
Novel chromophores and buried charges control color in mFruits.
More recently new derivatives have become available, both porphyrin-derived and employing new chromophores, for example from the phthalocyanine and phenothiazinium families.