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Detection of nitrophenolic compounds has great importance concerning to its environmental and health hazards. Herein, we are exploring a simple, thermally stable amide functionalized task specific ionic liquid (TSIL), 3-(2-amino-2-oxoethyl)-1-methylimidazolium chloride, [AmoMIM] [Cl] as an effective fluorescent probe for detection of water soluble nitrophenolic compounds viz. picric acid (PA) and p-nitrophenol (NP). The proposed method provides a straightforward detection proce-dure anchored in significant quenching of fluorescence of TSIL by nitrophenols in aqueous medium. Under the optimized conditions the probe offers good linear relationship within the studied detection range with limits of detection (LOD) found to be 0.43 and 0.38 mg mL À1 for PA and NP, respectively. The plausible static fluorescence quenching mechanism accomplished with ground state complex formation is also discussed.[a] S.

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NiO nanosheets were deposited on the surface of a stainless steel substrate by using a facile, environmentally friendly, reflux deposition approach for supercapacitor (SC) applications. X-ray diffraction patterns and field emission scanning electron microscopy images revealed the formation of a face centred cubic crystal structure with a uniform, compact, smoothly ordered nanosheet like structure. This study focuses on the electrochemical supercapacitive properties of NiO nanosheets with respect to cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy techniques in a 1-(2 ,3-dihydroxypropyl)-3-methylimidazolium hydroxide [DHPMIM][OH] ionic liquid (IL) as an electrolyte. The electrochemical study revealed that NiO (0.3 M) showed a high-specific capacitance of 205.5 F g −1 and an excellent cycling stability (80% specific capacitance retention after 5000 cycles) in the [DHPMIM][OH] IL electrolyte. Thus, the result showed that NiO nanosheets act as an active electrode material hold for SCs.