نتایج جستجو برای: reverse micelle method

تعداد نتایج: 1727313  

Journal: :Nanoscale 2010
S K Basiruddin Arindam Saha Rupa Sarkar Moumita Majumder Nikhil R Jana

A magnetic quantum dot (MQD) based cellular nanoprobe, composed of a magnetic oxide nanoparticle component and a quantum dot component, has been synthesized and used for both imaging and separation. The successful synthesis is based on a reverse micelle based polyacrylate coating in the presence of component nanoparticles, followed by their functionalization via conjugation chemistry.

Journal: :Science 1966
M H Meisler R H McCluer

The sialic acid-containing glycosphingolipids known as gangliosides can reverse the heat stabilization of DNA by histones. The ability of pure mono-and disialogangliosides to dissociate reconstituted nucleohistone is directly dependent on their sialic acid content; they are effective in concenitrations above their critical micelle concentration.

Journal: :journal of ultrafine grained and nanostructured materials 2012
i. sharifi h. shokrollahi

cobalt ferrite is an important magnetic material due to their large magneto-crystalline anisotropy, high cohercivity, moderate saturation magnetization and chemical stability.in this study, cobalt ferrites nanoparticles have been synthesized by the co-precipitation method and a new microemulsion route. we examined the cation occupancy in the spinel structure based on the “rietveld with energies...

2003
Mohamed Benrraou Barney L. Bales Raoul Zana

The surfactants cesium, tetramethylammonium, tetraethylammonium, tetrapropylammonium and tetrabutylammonium dodecyl sulfates (CsDS, TMADS, TEADS, TPADS, and TBADS) have been synthesized by ion-exchange. The critical micellization concentration in the absence of added salt (cmc) has been determined at 10, 25, and 40 °C using the electrical conductivity method. The cmc was found to decrease in th...

Journal: :The Journal of chemical physics 2012
K Fujimoto N Yoshii S Okazaki

Free energy of transfer of methylamine, octylamine, methanol, and octanol from water phase to sodium dodecyl sulfate (SDS) micelle has been calculated using thermodynamic integration method combined with molecular dynamics calculations. Together with the results for alkanes obtained in our previous study [K. Fujimoto, N. Yoshii, and S. Okazaki, J. Chem. Phys. 133, 074511 (2010)], the effect of ...

2003
Jing Chen Jianling Zhang Dongxia Liu Zhimin Liu Buxing Han Guanying Yang

The effect of compressed CO2 on the properties of protein (trypsin) in the reverse micelles of sodium bis(2-ethylhexyl)sulfosuccinate AOT/decane/water has been studied. UV-vis spectrum was used to determine the precipitation of trypsin in the reverse micelles, which reveals that trypsin can be precipitated from the reverse micelles by compressed CO2 at suitable pressures, while the surfactant A...

Journal: :Physical chemistry chemical physics : PCCP 2009
Palash Setua Debabrata Seth Nilmoni Sarkar

We have reported the study of methanol/AOT/n-heptane reverse micellar aggregates using Fourier Transform Infrared (FTIR) spectroscopy. We have divided our whole work into two parts. In the first part we have studied the structural properties of Aerosol OT (AOT) reverse micelles by monitoring the changes in the symmetrical sulfonate stretching region (1000-1100 cm(-1)), asymmetrical sulfonate st...

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