Abstract Cationic polycyclic aromatic compounds containing one or more nitrogen atom(s), also known as azonia compounds, form a valuable class of molecules because their fluorescent and/or medicinal properties. N-Arylated hydroisoquinoline derivatives were synthesized through an aryne aza-Diels–Alder cycloaddition/N-arylation sequence. A subsequent two-electron oxidation allowed the synthesis s...

tungsten trioxide nanoparticles with two different sizes (average particle sizes about 50 and 80 nm) were prepared by the spray pyrolysis method. photo degradation of congo red (azo dye) showed that photo catalytic property of the as-prepared wo3 nanoparticles with average size about 80 nm is higher than the sample with average size about 50 nm. photo degradation of rhodamine b (cationic triary...

Abstract The synthesis of two dye-labeled azides via de-symmetrization 2,6-bis(4-azidobenzylidene)-4-methylcyclohexanone (BAC-M) with a copper(I)-catalyzed alkyne-azide cycloaddition (CuAAC) using fluorescent dyes is reported. An alkyne functionalized dansyl derivative and an perylene diimide were used as the dyes. photo-physical properties these dye dyads are described, their performance in mu...

The presence of the cationic phospholipid lysyl-phosphatidylglycerol (lysyl-PG) in staphylococcal cytoplasmic membranes has been linked to increased resistance to cationic compounds, including antibiotics such as daptomycin as well as host defense antimicrobial peptides. We investigated the effects of lysyl-PG on binding of 6W-RP-1, a synthetic antimicrobial peptide, to lipid vesicles and on pe...

Abstract This article describes how selectively anionic organic molecules could be removed from aqueous medium using naturally available gypsum (GS) adsorbent. Gypsum (CaSO 4 .2H 2 O) shows strong interactions with dye while it dos not show any affinity towards cationic molecules. We have shown the removal efficiency of taking chlorazole yellow (anionic dye) and methylene blue (cationic as exam...

The mechanism of Methylene Blue adsorption on acid activated carbon Vitex Negundo Stem (AAVNS) has been studied through batch experiments. Generally, dyes are organic compounds used as coloring products in chemical, textile, paper, printing, leather, plastics and various food industries. The need for the treatment of dye contaminated waste water passed out from the industry. In this study, Vite...

The research of the present work was to investigate the removal of Rhodamine B dyes from aqueous solution by using Activated Acacia Nilotica Shell Carbon (ANSC). Generally, dyes are organic compounds used as colouring products in chemical, textile, paper, printing, leather, plastics and various food industries. The need for the treatment of dye contaminated waste water passed out from the indus...

Cationic dye (Methylene blue) was extract from waste water by using emulsified liquid membrane process. The composed of two phases: organic and aqueous. D2EHPA, SPAN 80 acid are the composition aqueous phase, however fuel oil represent phase. effect different parameters such as initial concentration cationic (MB), addition salt (KCl/ NaCl/ Na2SO4), (HCl/ H2SO4/H3PO4) extractant (10, 30 50 ppm) ...

The thermal stability of the monosubstituted cationic cyclodextrin (CD) derivatives PEMEDA-β-CD and PEMPDA-β-CD, which differ in their substituent linker length (ethylene and propylene, respectively), was studied via (1)H NMR experiments. PEMPDA-β-CD exhibited higher resistance towards the Hofmann degradation and was chosen as a more suitable host molecule for further studies. Inclusion propert...