In this Communication, we report a high-efficiency electrocatalyst for electrochemical water oxidation based on an Fe-doped Ni<sub>2</sub>P nanosheet array on a conductive carbon cloth. This catalyst shows a low onset overpotential of 190 mV, and it demands overpotentials of only 215 and 235 mV to drive 50 and 100 mA cm<sup>-2</sup>, respectively, with high electrochemical durability. This work offers us an attractive earth-abundant 3D catalyst electrode in water-splitting devices toward the mass production of hydrogen fuels for applications.
The heterocyclic ring in the title compound, C(10)H(7)F(3)O(3), has a half-boat conformation with the hy-droxy-bearing C atom lying 0.595 (3) Å out of the plane of the five remaining atoms (r.m.s. deviation = 0.022 Å) in the direction of the hy-droxy O atom. Linear supra-molecular chains along the a axis, sustained by O-H⋯O hydrogen bonds between the hy-droxy H and ketone O atoms, feature in the crystal packing. These chains are connected into a three-dimensional architecture by C-H⋯O and C-H⋯F contacts.
Perovskite solar cell (PSC) technology is the flag bearer for the future of photovoltaics allowing unlimited possibilities for its application.
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In our study, three gemini dicationic surfactants with different methylene group spacer (16-6-16, 16-5-16 and 16-4-16) have been synthesized and characterized in solution by <sup>1</sup>H NMR spectroscopic technique. The implications of gemini micellar solution on ninhydrin and metal amino acid complex ([Cu(II)-Trp]<sup>+</sup>) were performed by the means of single-beam UV–visible spectroscopy. The absorbance was noted at regular time intermissions and values of rate constant (<i>k<sub>ψ</sub></i>) were determined by using a computer-based program. Synthesized surfactants proved as an efficient catalyst on the interaction of ninhydrin with metal amino acid complex as compared to conventional surfactant and aqueous systems. The required description regarding the implications of gemini dicationic surfactants are provided in the text in detail. The conductivity technique was applied in order to get critical micelle concentration (cmc) of geminis in the presence and absence of reactants. Catalytic results developed in gemini dicationic surfactant system were explained effectively by pseudo-phase model. Various thermodynamic quantities, <i>viz</i>., activation energy, <i>E</i><sub>a</sub>, activation enthalpy, <i>ΔH</i><sup>#</sup>, and activation entropy, <i>ΔS</i><sup>#</sup>, were obtained on interaction of ninhydrin with [Cu(II)-Trp]<sup>+ </sup>in gemini systems by applying Eyring equation. A detailed explanation about these evaluated parameters was also made.
New potential enzyme inhibitors, fluorine-substituted thiobarbituric acid derivatives (2, 3, 9, 8 and 12) and their fused/isolated heterocyclic nitrogen systems (5, 6, 10 and 14) have been obtained from heterocyclization of fluorinated N , N ʹ-disubstituted thiourea (1, 7 and 11) with malonic acid followed by ring closure reactions with primary nitrogen reagents. Structures of the synthesized products have been deduced from their elemental analysis and spectral data. Anti-HIV-1 and inhibition of cyclin-dependent kinase2 (CDK2) for cell tumor division for the synthesized compounds were also evaluated.
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
