A little-studied p-type ternary oxide semiconductor, copper(I) tungstate (CuWO), was assessed by a combined theoretical/experimental approach. A detailed computational study was performed to solve the long-standing debate on the space group of CuWO, which was determined to be triclinic 1. CuWO was synthesized by a time-efficient, arc-melting method, and the crystalline reddish particulate product showed broad-band absorption in the UV-visible spectral region, thermal stability up to ∼260 °C, and cathodic photoelectrochemical activity.
View Article and Find Full Text PDFFive new examples of 9,10-chloro(bromo)-7-amine-spiro[chromeno[4,3-b]quinoline-6,1'-cycloalkanes] - in which cycloalkanes = cyclopentane, cyclohexane, and cycloheptane - were synthesized at yields of 42-56%, using a sequential one-pot two-step cyclocondensation reaction of three different scaffolds of 2-aminobenzonitriles and the respective spiro[chroman-2,1'-cycloalkan]-4-ones, and using AlCl as the catalyst in a solvent-free method. Subsequently, the five new spirochromeno-quinolines and nine quinolines previously published by us (14 modified tacrine scaffolds) were subjected to AChE and BChE inhibitory activity evaluation. The molecule containing a spirocyclopentane derivative had the highest AChE and BChE inhibitory activity (IC = 3.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
February 2020
Methylmercury (MeHg) is a neurotoxicant abundantly present in the environment. The long-term effects of MeHg have been investigated in rodents, yet data on the long-term or persisted toxicity of MeHg in invertebrates is scanty. Here, we examined the acute, intermediate, and chronic effects upon dietary administration of MeHg in nymphs of Nauphoeta cinerea.
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