xanthene dye


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xan·thene dye

(zan'thēn dī)
Derivative of the compound xanthene.
References in periodicals archive ?
Therefore, the photodynamic efficiency of four xanthene dyes (Rose Bengal, erythrosin B, eosin Y, and fluorescein) was determined in the present study by comparing their medium inhibitory concentration ([IC.sub.50]) values in HEp2 cells, their photodynamic activity using uric acid as a chemical dosimeter, and their octanol-buffer partition coefficient (log P).
Lavis, "Facile and general synthesis of photoactivatable xanthene dyes," Angewandte Chemie--International Edition, vol.
Ethyl eosin, the dye, is bleached like the typical xanthene dyes during the photoinitiation process [28].
Xanthene dyes, such as eosin Y, exhibit different tautomeric structures with different protolytic forms, either proton "on" or "off" depending on pH as illustrated in Figure 2 [19].
These include naturally occurring molecules such as chiorophylls, porphyrins, phthalocyanines, flavins, thiazine dyes, acridine dyes, anthraquinone dyes, xanthene dyes, hypercin, tetracyclines, sulfanilamides, psoralens, nalidixic acid, coal tar derivatives, chlorpromazines and aminobenzoic acid derivatives, to name but a few.
Among synthetic dyes most used by the food market are erythrosine, included in the class of xanthene dyes, and brilliant blue, classified as a triphenylmethane dye (BRASIL, 2005).
Therefore, sufficient dye content is necessary, bearing in mind that the typical xanthene dyes are bleached during the photo-initiation process [21].
Tsubomura, "Photocurrents in the ZnO and Ti[O.sub.2] photoelectrochemical cells sensitized by xanthene dyes and tetraphenylporphines.