RSC Advances  

Keto–enol tautomerism of hydroquinones was studied for fused aromatic compounds. For larger fused aromatic compounds the dione tautomer was the stable form. These experimental results were corroborated by calculations.

Sludge biochar loaded with Fe–Mn oxides (FMBC) was prepared and employed to remove Cr(VI) from wastewater.

High-purity C₃N QDs of a sensitive fluorescent response to various metal ions were synthesized by optimized solvothermal treatment with a yield up to 33.1%.

Cobalt is an essential metal to maintain several functions in the human body and is present in functional materials for numerous applications.

A novel phenothiazine-thiophene acetonitrile compound was synthesised through a Knoevenagel condensation reaction. The compound demonstrated selectivity towards Cu²⁺ and proved to have low cytotoxicity.

Paper fibers allow the high dispersion of a fluorescent polythiophene chemosensor for the suppression of aggregation-induced quenching, which is applied to the solid-state fluorescent quantitative sensing of metal ions using imaging analysis and pattern recognition techniques.

The WS₂-WO₃/P2ABT nanocomposite sensor for Hg²⁺ ions uses both the cyclic voltammetry (three-electrode cell) and the simple potentiometric (two-electrode cell) techniques. The calibration curve yields a Nernstian slope of 33.0 mV decade⁻¹ with a sensitivity of 2.4 μA M⁻¹.

A small series of simple pyrazoline and pyrazole based sensors, all derived from the same chalcone precursors, were synthesised, characterised and screened for their fluorescence “turn on” properties in the presence of multiple metals.

A facile synthesis of selenopyrazine compounds is demonstrated at room temperature. The molecular structures are unambiguously determined using SC-XRD. Additionally, the optical properties of these compounds are studied.

Various molybdenum complexes were identified reacting MoO₃ and ethylene glycol, and both X-ray crystallography and electrochemistry provide a better understand of this complex, yet crucial reagent used for the 1st reported MoS₂ electrodeposition.

A colorimetric and fluorescent signaling probe was developed for Pd²⁺ assay in Pd-containing catalyst and drug candidate, with a rapid response and high selectivity.