Results 151 to 160 of about 3,143 (183)
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Radiochromic leuco dye micelle hydrogels: I. Initial investigation
Physics in Medicine and Biology, 2009This investigation reports the use of surfactants and colorless leuco triarylmethane dyes to form a new class of radiochromic micelle hydrogels for three-dimensional (3D) water-equivalent dosimetry. Gelatin gel samples with several surfactants and leuco dyes were prepared and evaluated for optical transparency, dose sensitivity and diffusion rates. The
Kevin, Jordan, Nikita, Avvakumov
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AROMATIC ALDEHYDE-LEUCO DYE PHOTOXIDATION
Pure and Applied Chemistry, 1977Tris (dimethylaminophenyl) methane leuco dyes undergo rapid photoxidation together with aromatic aldehydes. Quantum yields for dye formation in film media are ~750. A practical photoimaging system based on this chemistry was developed. The chemical aspects of sensitization, achievement of dark stability, and the rendering of the films photo-insensitive
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Polymethine Dye Synthesis and Its Leuco Property Investigation
Molecular Crystals and Liquid Crystals, 2007Polymethine dyes have been synthesized using bis-dimethylaminophenylethylene compound. These dyes can be converted to the colorless leuco form by the treatment with alkali. Interestingly, these leuco dyes showed reversible color formation properties with following acid addition.
Young-A Son +3 more
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Electrochemical control of luminescence color using luminescent leuco dye derivatives
Journal of the Society for Information Display, 2021AbstractElectrochemical switching of luminescence color, that is, electrofluorochromism, has received increasing attention because of its extensive applications. In this study, we investigate the combination of a luminescent EC molecule and a blue luminescent molecule to achieve electrochemical control of luminescence color by controlling the energy ...
Kazuki Nakamura +2 more
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ChemInform Abstract: Unexpected Regioselectivity in the Sulfonation of Leuco Xanthene Dyes.
ChemInform, 1994AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
P. R. CARLIER +2 more
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Equilibrium Adsorption Values of Leuco Vat Dyes on Cotton
Journal of the Society of Dyers and Colourists, 1957The equilibrium adsorption of a series of leuco vat dyes on cotton has been measured in various concentrations of sodium chloride and sodium hydroxide. From the results the thermodynamic affinities have been calculated. Deviations from theory are observed in so far as the affinities are not constant, but show a regular drift as the concentration of ...
R. H. PETERS, H. H. SUMNER
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ChemInform Abstract: AROMATIC ALDEHYDE‐LEUCO DYE PHOTOXIDATION
Chemischer Informationsdienst, 1977AbstractTris‐(dimethylaminophenyl)methan‐ Leukofarbstoffe (I) werden in Gegenwart aromatischer Aldehyde, insbesondere solcher der Formel (II), rasch zu den Farbstoffen der Formel (III) photooxidiert, wobei die Quantenausbeuten ca. 750 betragen.
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Chemistry and Applications of Leuco Dyes
2002Spiropyran Leuco Dyes H. Nakazumi. Leuco Quinone Dyes M. Matsuoka. Thiazine, Oxazine, and Phenazine Leuco Dyes T. Van Thien. Synthesis and Properties of Phthalide-Type Color Formers I.J. Fletcher, R. Zink. The Chemistry of Leuco Triarylmethanes R. Muthyala, X. Lan. The Chemistry of Fluoran Leuco Dyes Y. Hatano.
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The Chemistry of Fluoran Leuco Dyes
2005In our information-oriented society, computer and facsimile are being widely used as a means for transmitting information. Carbonless copying papers and thermosensitive recording papers, which utilize a color-formation reaction between leuco dyes and acidic compounds, have won high regard as recording papers used with these office machines.
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Importance of Solvent Polarity in the Equilibrium Reaction of Leuco Dye and Developer
Chemistry Letters, 2006Abstract The absorbance of the leuco dye and developer solution system showed a maximum by the change of solvent polarity, and a clear correlation between the ratio of coloring species at the maximum and the dielectric constant of polar solvents has been revealed.
Yumiko Sekiguchi +3 more
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