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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.


Papers
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Patent
20 Mar 1990
TL;DR: Water-soluble fiber-reactive dyes are highly suitable for dyeing of carboxamido-containing and/or hydroxyl-containing materials, such as, for example, synthetic polyamide fiber materials, wool and in particular cellulose fiber materials with a high degree of fixation in hues which have a high color strength and good fastness properties.
Abstract: Water-soluble fiber-reactive azo, metal complex azo, anthraquinone, phthalocyanine, formazan, azomethine, dioxazine, phenazine, stilbene, triphenylemthane, xanthene, thioxanthone, nitroaryl, naphthoquinone, pyrenequinone or perylenetetracarbimide dyes which contain once or twice the group of the general formula ##STR1## in which: R x and R z are, independently of one another, hydrogen or lower alkyl, which can be substituted by halogen, hydroxyl, cyano, lower alkoxy, lower alkoxycarbonyl, carboxyl, sulfamoyl, sulfo or sulfato; W is fluorine, chlorine, bromine, sulfo, phenylsulfonyl or alkylsulfonyl of 1 to 4 carbon atoms; Y is vinyl, β-substituted, β-thiosulfatoethyl, β-phosphatoethyl, β-alkanoyloxyethyl of 2 to 5 carbon atoms in the alkanoyl radical, β-benozoyloxyethyl, β-(sulfobenzoyloxy)ethyl, β-(p-toluenesulfonyloxy)ethyl or β-halogenoethyl. The fiber-reactive dyes are highly suitable for the dyeing of carboxamido-containing and/or hydroxyl-containing materials, such as, for example, synthetic polyamide fiber materials, wool and in particular cellulose fiber materials with a high degree of fixation in hues which have a high color strength and good fastness properties.

3 citations

Journal ArticleDOI
TL;DR: In this paper , a simple turn-on fluorescent probe named DMX is reported using CN bond as the ONOO- recognition site and xanthene as the fluorophore.

3 citations

Journal ArticleDOI
E Aiden1
TL;DR: In this paper , a bioactive benzoxanthene lignan (BXL) has been included in SLN. Unloaded and loaded SLN were incubated with the MLV, and their interactions were evaluated through variations in their calorimetric curves.
Abstract: Benzo[k,l]xanthene lignans are a group of rare natural products belonging to the class of polyphenols with promising biological activities and are studied as potential chemotherapeutic agents. The lipophilic character of a xanthene core makes these molecules difficult to be used in an aqueous medium, limiting their employment in studies for pharmaceutical applications. To overcome this problem, a drug-delivery system which is able to improve the stability and bioavailability of the compound can be used. In this study, a bioactive benzoxanthene lignan (BXL) has been included in SLN. Unloaded and BXL-loaded SLN have been prepared using the Phase Inversion Temperature method and characterized in terms of size, zeta potential, entrapment efficiency and stability. Differential scanning calorimetry was used to evaluate the thermotropic behavior and ability of SLN to act as carriers for BXL. A biomembrane model, represented by multilamellar vesicles, was used to simulate the interaction of the SLN with the cellular membrane. Unloaded and loaded SLN were incubated with the MLV, and their interactions were evaluated through variations in their calorimetric curves. The results obtained suggest that SLN could be used as a delivery system for BXL.

3 citations

Journal ArticleDOI
R Ramani1
TL;DR: In this article, a mechanism for light emission enhancement is elucidated on the basis of the observed overlap of Lyoluminescence emission spectrum in the presence of these dyes and the fluorescence spectrum of the corresponding dye in aqueous media.

3 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202354
2022136
202182
202091
201986
201891