Platinum (Pt) and platinum–nickel (Pt–Ni) electrocatalysts were prepared on activated graphite electrodes by an electrochemical deposition process.

A three dimensional (3D) non-enzymatic glucose disposable electrochemical sensor based on screen-printed graphite macroelectrodes (SPEs), modified with nickel hydroxide (Ni(OH)2/SPE), copper hydroxide (Cu(OH)2/SPE) and mixed (Ni(OH)2/Cu(OH)2/SPE) microstructures were prepared by...

Fluorescent behaviour of lomustine, a DNA cross-linking agent, was investigated in different solvents, pH and in the presence of b-cyclodextrin (b-CD). The solvents in which fluorescence spectra were observed play a major role in determining the spectral intensity of fluorophore, since it was found to exhibit new fluorescent properties essentially influenced by intermolecular interactions, particularly by intermolecular H-bonding formed with solvents. The pH-dependence profile was typically U-shape with a maximum at pH between 3.51 and 6.58. It was corroborated that the fluorescence emission band of lomustine is significantly intensified in the presence of b-CD. From the changes in the fluorescence spectra, it was concluded that b-CD forms a 1:1 inclusion complex with lomustine and its association constant was calculated.

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