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Kinetic Studies on Hydride Transfer Reactions of Dyes and Leuco Dyes

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Luminescence of Leuco-Thiazine Dyes

Journal of Fluorescence, 2003
Details of the novel luminescence of the leuco forms of the thiazine dyes, methylene blue and thionine, are reported, including their emission maxima, quantum yields and lifetimes of the luminescence. Other work shows that this luminescence is independent of reducing agent type and solution pH and is a common feature of most thiazine dyes.
Soo-Keun Lee   +2 more
exaly   +4 more sources

Biodegradation of leuco derivatives of triphenylmethane dyes by Sphingomonas sp. CM9

Biodegradation, 2010
A leuco derivatives of triphenylmethane dyes degrading bacterium, strain CM9, was isolated from an aquafarm field. Based on morphology, physiologic tests, 16S rDNA sequence, and phylogenetic characteristics, it was identified as Sphingomonas sp. This strain was capable of degrading leucomalachite green (LMG), leucocrystal violet and leucobasic fuchsin ...
Liguan Li, Liuyan Yang, Li Liguan
exaly   +4 more sources

Leuco Quinone Dyes

2002
The chemistry of quinone dyes has been discussed in a series of books entitled The Chemistry of Synthetic Dyes, edited by Venkataraman. The general chemistry of quinoid compounds has been discussed by Patai. There have been many books that cover quinoid compounds as dyes and pigments but very few discuss the chemistry of the corresponding leuco dyes ...
exaly   +2 more sources

A tight binding model of the bond dissociation mechanism in thermochromic leuco dyes

Journal of Molecular Structure, 2020
Abstract It has long been known that heat, UV light, or protonization will cause the bond in Leuco dye's to break. The underlying microscopic mechanism is a still a matter of discussion. It stands to reason that a local model should correctly predict the temperature behavior of the heat capacity at the thermochromic phase transition.
C B Nelson, Kannan Sivaprakasam
exaly   +2 more sources

The Chemistry of Esters of Leuco Vat Dyes. V– The Action of Light

Coloration Technology, 1965
The rates of reaction, under the influence of light, of the sulphuric acid esters of several leuco vat dyes have been measured in the presence of different amounts of hydrogen peroxide. The results can be explained if light causes hydrolysis of the sulphuric ester to the leuco vat dye, and it has been possible to demonstrate this reaction by ...
O. H. CLAUSSEN, A. JOHNSON, P. T. KAMDAR
exaly   +2 more sources

Biimidazole-sensitized photooxidation of leuco triphenylmethane dyes

Journal of Organic Chemistry, 1971
Alexander MacLachlan, R. H. Riem
exaly   +2 more sources

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