نتایج جستجو برای: triphenylmethane

تعداد نتایج: 214  

Journal: :Molecules 2018
De-Xin Kong Fang Lv Ben Hu Li-Min Cao

Detection of triphenylmethane dyes (TDs), especially the widely used malachite green (MG) and crystal violet (CV), plays an important role in safety control of aquatic products. There are two chromatic forms of TDs: oxidized or reduced. Usually, only one form can be detected by reported ELISA antibodies. In this article, molecular shape superimposing and quantum mechanics calculation were emplo...

2006
Leandro Papinutti Nora Mouso Flavia Forchiassin

The triphenylmethane dye malachite green (MG), commonly used as fungicide, was adsorbed onto wheat bran (WB) by using a batch technique. The effects of contact time, dye concentration and pH were investigated. The equilibrium was attained after 40 min of contact time irrespective of MG concentration. The pH of MG aqueous solution greatly influenced the adsorption capacity and intensity, it was ...

2015
Carolin Fleischmann Melanie Lievenbrück Helmut Ritter

Amongst functional macromolecules, the combination of polymers and dyes is a research field of great potential with regard to high-performance materials. Accordingly, colored polymers have become increasingly important as materials for miscellaneous technical applications in recent years while also being a major part of everyday life. For instance, dye-containing polymers are nowadays widely ap...

2011
Gabriela Arroyo-Figueroa Graciela M. L. Ruiz-Aguilar Leticia López-Martínez Guillermo González-Sánchez Germán Cuevas-Rodríguez Refugio Rodríguez-Vázquez

Trametes versicolor (Tv) fungus can degrade synthetic dyes that contain azo groups, anthraquinone, triphenylmethane polymers, and heterocyclic groups. However, no references have been found related to the degradation of natural dyes, such as the carminic acid that is contained in the cochineal extract. Experiments to determine the decolorization of the effluent used in the cotton dyeing process...

2012
Wioletta Przystaś Ewa Zabłocka-Godlewska Elżbieta Grabińska-Sota

Increasing environmental pollution is connected with broad applications of dyes and imperfection of dyeing technology. Decolourization of triphenylmethane brilliant green and disazo Evans blue by bacterial and fungal strains and toxicity (phyto- and zootoxicity) of degradation by-products were investigated. Influence of incubation method on dyes removal was evaluated (static, semi-static, shake...

Journal: :Marine Pollution Bulletin 2021

Bio-based plastics were designed to replace single-use and cause less post-consumer environmental damage. This paper assesses the weathering of four bio-based polymers created by ring opening polymerization (ROP) promoted a previously reported Ti-based catalyst, detect any problems before production was scaled up. Samples aged in seawater identify degradation products monitor structural changes...

Journal: :Angewandte Chemie 2021

For the first time we have been able to employ enantiopure 1,2-amino alcohols derived from abundant amino acids in C−C bond-forming hydrogen-borrowing alkylation reactions. These reactions are facilitated by use of aryl ketone Ph*COMe. Racemisation amine stereocentre during can be prevented sub-stoichiometric base and protection nitrogen with a sterically hindered triphenylmethane (trityl) or b...

2017

Synthetic dyes are complex aromatic compounds used in many industries like paper, printing, textile, food and cosmetics [1]. The major synthetic dyes include azo, triphenylmethane, anthraquinone and metal dyes. They are reported to be carcinogenic and thus their safe release into the environment poses a threat to public health. About 10-15% of the substrate unbound dyes from the industries are ...

2010
Jyotirmayee Mohanty

The molecular association through host-guest interaction of chromophoric dyes having technological and biological importance have been investigated with a macrocyclic receptor, cucurbit[7]uril (CB7). Exploiting host-guest (CB7rhodamine 6G) interaction, the construction of a highly efficient “water-based supramolecular dye laser” has been demonstrated. The CB7 imposed modulation of the protonati...

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