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Showing 1 to 20 of 64 for “"Anthraquinone"”.
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Molecular distillation characteristics of several anthraquinone dyes
… the distillation characteristics of several anthraquinone dyes by the determination of single and composite elimination curves, and to attempt to separate binary mixtures of dyes by various redistillation techniques. The glass centrifugal molecular still with a five-inch rotor and a ball-jar …
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Anthraquinone-peptide conjugates as inhibitors of DNA transcription factor binding.
… of proteins were attached to mono-substituted anthraquinones through various amino acid type linkers. It was envisaged that these intercalator-linked peptides would have the advantage of high DNA binding with some sequence selectivity. The peptides (l:ARCKA; 2:AKCRA; 3:AKSRA; 4:AKCRNA; …
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Spectroelectrochemical Studies of the Reductive Intermediates of Anthraquinone-2,6-Disulfonate in Aqueous Media
<p>Reactive intermediates in the reduction of anthraquinone-2,6-disulfonate (AQDS) by dithionite combine to form a transient dimer which has shown to give rise to a series of charge transfer bands in the visible range (600-750 nm). Additional wavelengths associated with these intermediate species …
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Soda Anthraquinone (Soda AQ) and Bio-chemical pulping process on napier grass for papermaking industry
… SEM had completely different with a treatment by anthraquinone and xylanase enzyme act as a factor which lead a highly strong fibre to produce a good paper from non-wood materials to be compete with a wood-base paper for industry. Napier grass by the additional of additives from anthraquinone and …
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PHOTOLYSIS OF1-METHYL-9,10-ANTHRAQUINONE DERIVATIVES AND THEIR POTENTIAL REACTIVITY IN THE PHOTOENOL DIELS-ALDER REACTION
Functionalized 9,10-anthraquinones (AQ) have proven to undergo a Photoenol Diels-Alder (PEDA) reaction. The PEDA reaction has been enhanced by the following factors: increased AQ electron density and the geometry of the intermediate 1,4-biradical (BR). Hydrogen bonding of the intermediate BR aids …
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Development and evaluation of linerboard made from soda-anthraquinone treated coconut coir fiber for protective packaging
This research aimed to develop a linerboard made from coconut coir fiber (acts as a reinforcing fiber) blended with old corrugated container (OCC)/ dry strength agent (DSA) with high burst and ring crush strength properties. This newly developed linerboard would be an alternative source of …
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Developing and Investigating the Scope of Quinone-Functionalised Carbons for Electrochemical Carbon Dioxide Capture
… organic molecules leaking into the electrolyte. Anthraquinone is a common organic molecule for this process because it is highly stable under different conditions and exhibits electrochemically reversible redox behaviour. However, anthraquinones in solution can react with oxygen, suffer from …
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Synthetic Studies of the Rubellin Natural Products
… First described are select syntheses of complex anthraquinone monomers and dimers within the past 20 years. The scientific community has found deep interest in the anthraquinone class of compounds due to their therapeutic properties and challenging structural elements. Various architecturally …
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Anthraquinone Corn Seed Treatment (Avitec™) As A Feeding Repellent for Ring-Necked Pheasants (Phasianus colchicus) on Newly Planted Corn in Eastern South Dakota
… and Tellier 1943). The compound 9,10-anthraquinone is a nontoxic, naturally occurring post-ingestional irritant that produces a conditioned taste aversion when the bird experiences illness after consuming the treated kernel and associates the illness with the food (Avery 2003). …
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Evaluating the Fungistatic and Fungicidal Activities of Bianthrones as Synthetic Intermediates to Novel Hypericin Analogues.
… focus of this research is on the synthesis of anthraquinone, anthrone, bianthrone and hypericin type derivatives and the effect they have on the growth of the yeast species Schizosaccharomyces pombe, Lipomyces starkeyi andSaccharomyces cerevisiae. It is hoped that a new antifungal agent could …
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The Development and Evaluation of a Range of Phototherapeutic Dyes Towards Infection Control
… belonging to either the flavin, porphyrin or anthraquinone family were synthesised. These dyes were tested to determine the singlet oxygen yield and how the change in the structure affected the singlet oxygen production. The growth inhibition of these compounds were also tested to see how the …
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Specificity of triple helix formation
… in TFOs. Also modified TFO’s containing anthraquinone<br/>derivatives have been tested. Further, the free-intercalating agent<br/>naphthylquinoline has been used to modulate TFO binding.<br/>A TFO containing six consecutive BAU molecules has previously been<br/>shown to interact with …
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Supramolecular porphyrin arrays on DNA and SWNT scaffolds
… the ‘flexible’ linker. The synthesis of a novel anthraquinone modified nucleoside is presented. Modified DNA strands containing both porphyrin modifications and anthraquinone modifications were synthesised and analysed electrochemically. Cyclic voltammetry has shown that the inclusion of multiple …
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Elucidation of Reactions in Organic Photochemistry
… is unavailable in the ground state. 1,2-Dialkoxy anthraquinones exhibit photochemistry which releases an alkane functional group from the 1-position and forms a dimer from the anthraquinone moiety. This reactivity is observed for a plethora of 1,2-dialkoxy-9,10-anthraquinones; however different …
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Towards a comprehensive model for cooking processes
… between the reciprocal lignin content and the anthraquinone charge earlier established for soda-anthraquinone cooks was confirmed in the kraft-anthraquinone context. For carbohydrate degradation during kraft cooking a model based on the endwise reactions peeling, stopping and alkaline …
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An evaluation of the environmental fate of reactive dyes
… The kinetics of photodegradation of an anthraquinone dye (Reactive Blue H4R) and azo dye (Reactive Yellow P5G) were evaluated. The former underwent rapid and extensive degradation 01/2 1.5 h). The major products formed were identified using LC-MSMS and a photodegradation pathway …
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Investigation of the Role of Groove Hydration and Charged Nucleosides in DNA Charge Transfer
… by incorporating the modified nucleosides into anthraquinone linked DNA duplexes and irradiating them with UV light at 350 nm. The incorporation of these hydrophobic substituents disrupt the DNA spine of hydration, and we have observed that these modifications in the major and minor groove do …
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