نتایج جستجو برای: cationic aromatic dye

تعداد نتایج: 100181  

2003
M. WEISS

Mitochondrm are important in ion transport, as has been shown in recent biochemical studies. For e~ample, Stanbury and Mudge have shown that isolated mitochondria are capable of maintaining high concentrations of potassium when suspended in potassium poor solutions (7), and Bartley and Davies have shown that isolated mitochondria can take up cations from the surrounding solution against a conce...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
Brent S Gaylord Alan J Heeger Guillermo C Bazan

The light-harvesting properties of cationic conjugated polymers are used to sensitize the emission of a dye on a specific peptide nucleic acid (PNA) sequence for the purpose of homogeneous, "real-time" DNA detection. Signal transduction is controlled by hybridization of the neutral PNA probe and the negative DNA target. Electrostatic interactions bring the hybrid complex and cationic polymer wi...

2013
Nguyen M. Cuong Shoji Ishizaka Noboru Kitamura

A laser trapping-microspectroscopy technique combined with excitation energy transfer from a fluorescent cationic dye (Rhodamine B, RB) to a non-fluorescent cationic dye (Malachite Green, MG) was employed to study pH effects on the diffusion coefficients of MG (D(MG)) in single cation-exchange resin microparticles with the diameters of 16 μm. When RB-pre-adsorbed resin particles were soaked in ...

Bio-absorbent palm fiber was applied for removal of cationic violet methyl dye from water solution. For this purpose, a solid phase extraction method combined with the artificial neural network (ANN) was used for preconcentration and determination of removal level of violet methyl dye. This method is influenced by factors such as pH, the contact time, the rotation speed, and the adsorbent dosag...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2017
Giuseppe Licari Lukasz Cwiklik Pavel Jungwirth Eric Vauthey

The adsorption of a DNA fluorescent probe belonging to the thiazole orange family at the dodecane/water and dodecane/phospholipid/water interfaces has been investigated using a combination of surface second harmonic generation (SSHG) and all-atomistic molecular dynamics (MD) simulations. Both approaches point to a high affinity of the cationic dye for the dodecane/water interface with a Gibbs f...

2010
Teresa Arey

Cationic amine functional groups are present in many pharmaceuticals, such as oxytetracycline and desvenlafaxine, which are increasingly released into the environment. Sorption, the accumulation of a chemical at the solid-water interface, influences chemical fate and human exposure. As such, this research focuses on cationic amine sorption to montmorillonite, an important component of soil syst...

Journal: :The Journal of biological chemistry 1989
Y Sharma C M Rao S C Rao A G Krishna T Somasundaram D Balasubramanian

The interaction of the cationic carbocyanine dye Stains-all (1-ethyl-2-[3-(1-ethyl-naphthol[1,2-d]thiazolin-2-ylidene)-2- methylpropenyl]naphthol[1,2-d]thiazolium bromide) with the eye lens proteins crystallins has been studied. alpha- and gamma-crystallins do not bind the dye, while beta- and delta-crystallins do, consistent with the fact that the latter two proteins bind the calcium ion. beta...

Journal: :Journal of the Brazilian Chemical Society 2009

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