Using a purification method introduced earlier based on redox properties it was possible to isolate Sc3N@I(h)-C80 and Sc3N@D(3h)-C78 and a mixture of Sc3N@D(5h)-C80 and Sc3N@D3-C68. Taking advantage of their chemical reactivity differences, Sc3N@D(5h)-C80 was isolated from Sc3N@D3-C68 followed by further functionalization, giving rise to five new methano-derivatives of Sc3N@D(5h)-C80.

Nowadays, synthetic diamond has been studied for its application in wastewater treatment, electroanalysis, organic synthesis and sensor areas; however, its use in the water disinfection/purification is its most relevant application. The new electrochemistry applications of diamond electrodes open new perspectives for an easy, effective, and chemical free water treatment. This article highlights...

Flow electrochemistry is an efficient methodology to generate radical intermediates. An electrochemical flow microreactor has been designed and manufactured to improve the efficiency of electrochemical flow reactions. With this device only little or no supporting electrolytes are needed, making processes less costly and enabling easier purification. This is demonstrated by the facile synthesis ...

The growing need for clean drinking water worldwide is one of the pressing issues of this century. The World Health Organization estimates that in 2005, 1.6 million children under the age of 5 died from causes due to unsafe drinking water. Low-pressure membrane filtration systems are likely to play an important role in water purification and reuse strategies. While these systems have low-cost a...

Cholera toxin was labeled with tritium by the Wilzbach technique, and highly purified radiolabeled toxin was obtained by Sephadex column chromatography and disc gel electrophoresis. 3H-labeled cholera toxin retained its biological activity and chemical stability and had a specific activity of 405.9 muCi/mumol. The methods utilized in extraction and purification of 3H-labeled toxin may be advant...

ABSTR ACT: Fructooligosaccharides (FOSs) are short-chain sugar molecules, which are useful for a variety of purposes. They possess a number of desirable characteristics, such as low calories, no carcinogenicity, and usefulness as prebiotics. There has been increasing interest in neo-FOSs recently due to their superior Bifido-stimulating effect and chemical and thermal stability compared to thei...

We have prepared two new diastereoisomeric 2-aza-5-phosphabicyclo[2.2.1]heptanes from naturally occurring trans-4-hydroxy-L-proline in six chemical operations. These syntheses are concise and highly efficient, with straightforward purification. When we used these chiral phosphines as catalysts for reactions of γ-substituted allenoates with imines, we obtained enantiomerically enriched pyrroline...

• 2.3 L-argininethe versatile amino acid with enormous health benefits • 2.4 The need for L-arginine quantification in clinical and food samples • 2.5 Methods of L-arginine estimation • 2.6 Production, purification and characterization of arginase • 2.7 Structure related studies • 2.8 Recombinant arginase • 2.9 Modification of arginase: immobilization and chemical modification • 2.10 Assay proc...

To learn the molecular mechanism of an enzyme action, first the protein has to be purified. Because of its simplicity and reproducibility, affinity chromatography has become a adopted method throughout the scientific community. Affinity chromatography occupies a unique place in separation technology since it is the only technique which enables purification of almost any biomolecules on the basi...

We have combined fast heating with plasma enhanced chemical vapor deposition (PECVD) for preferential growth of semiconducting vertically aligned single-walled carbon nanotubes (VA-SWNTs). Raman spectroscopic estimation indicated a high yield of up to 96% semiconducting SWNTs in the VA-SWNT array. The as-synthesized semiconducting SWNTs can be used directly for fabricating FET devices without t...