- Synthesis, characterization and structure of metallocene dicyanamide complexes
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The bis(cyclopentadienyl) complexes [Cp2Ti(dca)]2O and Cp2V(dca)2 (dca = dicyanamide) have been prepared by reaction of sodium dicyanamide with aqueous solution of titanocene dichloride and vanadocene dichloride
- Honzí?ek, Jan,Erben, Milan,Císa?ová, Ivana,Vinklárek, Jaromír
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- Luminol-Based Turn-On Fluorescent Sensor for Selective and Sensitive Detection of Sulfur Mustard at Ambient Temperature
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We have explored a novel turn-on fluorescence detection of sulfur mustard (SM) at room temperature . The innovative protocol that uses the combination of luminol and an ionic liquid in water exhibits fluorescence detection of SM within seconds. In this simple, fast, and low-cost chemosensing method, luminol acts as the receptor as well as a signaling element, and the ionic liquid (1-ethyl-3-methylimidazolium dicyanamide) provides the requisite and polarizing medium to realize the detection at room temperature . Interestingly, with a higher concentration of a probe (0.56 mM), SM sensing can be visualized with the naked eye, leading to the formation of a fluorescent green color within a minute, thus expanding the application of the developed sensing technique for chromo-fluorogenic detection of SM. Excellent selectivity, sensitivity (LOD: 6 ppm), and chemosensing at ambient temperature make this methodology completely field-deployable.
- Singh, Virendra V.,Kumar, Vinod,Biswas, Utpal,Boopathi, Mannan,Ganesan, Kumaran,Gupta, Arvind K.
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- Method of producing sodium dicyanamide
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A process is described for preparing sodium dicyanamide, in which cyanamide is reacted simultaneously with sodium hydroxide solution and cyanogen chloride in aqueous solution at temperatures of 20 to 100° and a pH of 7.0 to 10.0. By means of the inventive process it is possible, starting from raw materials which are available in technical-grade quality, to prepare sodium dicyanamide in good yields of 75 to 95% and very high purities of up to 100% in a very environmentally friendly manner, for which reason this process is particularly highly suitable for the industrial scale.
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(2008/06/13)
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