Topic
Xanthene
About: Xanthene is a research topic. Over the lifetime, 2132 publications have been published within this topic receiving 34803 citations. The topic is also known as: Xanthene & dibenzo[a,e]pyran.
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TL;DR: Mangiferin, isomangifer in, and homomangifierin, the xanthone C-glycosides with a wide spectrum of pharmacological effects, were synthesized concisely, featuring a C- glycosylation of a xanthene derivative with perbenzylglucopyranosyl N-phenyltrifluoroacetimidate.
Abstract: Mangiferin, isomangiferin, and homomangiferin, the xanthone C-glycosides with a wide spectrum of pharmacological effects, were synthesized concisely, featuring a C-glycosylation of a xanthene derivative with perbenzylglucopyranosyl N-phenyltrifluoroacetimidate.
45 citations
TL;DR: In this paper, the role of dispersive and electrostatic forces in the dimerization process of xanthene dyes is discussed, and a new synthesized rhodamine is described which does not exhibit any dimerisation phenomenon in a large range of concentrations.
Abstract: 1-D and 2-D NMR experiments and molecular dynamics simulations have been performed to study the dimerization process of two laser dyes namely Rodamine 6G and Pyronine 6G in water. Two possible stacked dimer structures have been evidenced, and the agreement between experimental and theoretical results is very good. The role of dispersive and electrostatic forces in the dimerization mechanism is discussed. This analysis allows us to suggest some chemical modifications on xanthene dyes to prevent such dimerization. On this basis, a new synthesized rhodamine is described which does not exhibit any dimerization phenomenon in a large range of concentrations.
45 citations
Patent•
29 Jul 1991TL;DR: In this paper, a set of dyes for use in vehicles employing high molecular weight saccharides is provided for use with high molecular-weight dyes, which includes about 1 to 4% xanthene magenta, about 0.9 to 2% of a mixture of Acid Yellow 23 and Direct Yellow 86, and approximately 0.75 to 2.5% of Acid Blue 9 or a mixture with acid blue 9 and a copper phthalocyanine dye.
Abstract: A set of dyes is provided for use in vehicles employing high molecular weight saccharides. The dye-set comprises about 1 to 4% xanthene magenta, about 0.9 to 2% of a mixture of Acid Yellow 23 and Direct Yellow 86, and about 0.75 to 2.5 of Acid Blue 9 or a mixture of Acid Blue 9 and a copper phthalocyanine dye containing not more than about 25% copper phthalocyanine. The particular dye-set evidences the following properties: good crusting resistance, good stability, the proper viscosity, the proper surface tension, recognizable secondaries, high color saturation, little color-to-color bleed, rapid drytime, no negative reaction with the vehicle, be highly soluble in the vehicle, consumer-safe, and low strike-through.
45 citations
TL;DR: In this article, a simple and novel approach for synthesizing the benzene ring-layered polymers using [2.2]paracyclophane and xanthene skeletons was demonstrated.
45 citations
TL;DR: An efficient route is reported to 5- and 6-carboxy-X-rhodamines (compounds 1 and 2) that contain multiple n-propylene or γ,γ-dimethylpropylene groups bridging terminal nitrogen atoms and the central xanthene core.
44 citations