Down and up conversion luminescence of the lead-free organic metal halide material: (CHNO)SnCl·2HO.

The present work deals with the optical properties of hybrid organic metal halide material namely (C9H8NO)2SnCl6·2H2O. Its structure is built up from isolated [SnCl6]2- octahedral dianions surrounded by Hydroxyl quinolinium organic cations (C9H8NO)+, abbreviated as [HQ]+. Unlike the usual hybrid materials, where metal halide ions are luminescent semiconductors while the organic ones are optically inactive, [HQ]2SnCl6·2H2O contains two optically active entities: [HQ]+ organic cations and [SnCl6]2- dianions.

Sensitizer-free photon up conversion in (HQ)ZnCl and HQCl crystals: systems involving resonant energy transfer and triplet-triplet annihilation.

This work deals with normal luminescence and up-conversion luminescence involving charge transfer and triplet-triplet annihilation in the lead free hybrid materials (HQ)2[ZnCl4] and HQCl salt; HQ is the hydroxyquinolate cation (HQ+ = C9H8NO+). The crystal structures were determined by X-ray diffraction and the optical properties were investigated by optical absorption and photoluminescence measurements and electronic band structure calculations. Under UV excitation, the normal luminescence is associated with π-π* transitions within the organic cation and involves energy and charge transfer between the inorganic ion and organic cation.

Anti-oxidant, anti-inflammatory, analgesic and antipyretic activities of grapevine leaf extract (Vitis vinifera) in mice and identification of its active constituents by LC-MS/MS analyses.

Ethnopharmacological Relevance: The leaves of Vitis vinifera is used in traditional medicine for diarrhea, hepatitis and stomachaches. The objective of this study was to investigate the anti-oxidant, anti-inflammatory, analgesic and antipyretic properties of the hydroalcoholic leaf extract of Vitis vinifera (EVV) on experimental models to provide scientific basis for its use.

Materials And Methods: The EVV was chemically characterized by LC-MS/MS analyses.

Oxidative stress and thyroid impairment after gibberellic acid treatment in pregnant and lactating rats and their offspring.

Gibberellic acid (GA₃) has been worldwide used in agriculture as a plant growth regulator. The purpose of this study is to assess the effects of GA₃ on the morphology and the thyroid hormone levels in adult rats and their suckling pups. Animals were given daily 200 ppm GA₃ in drinking water from the 14th day of pregnancy until day 14 after delivery.

Oxidative stress induced by gibberellic acid on kidney tissue of female rats and their progeny: biochemical and histopathological studies.

Gibberellic acid (GA(3)) is an endogenous plant growth regulator used worldwide in agriculture. The objective of this study was to investigate the effects of GA(3) on the kidney function of adult rats and their pups. Female Wistar rats were given daily 200 ppm GA(3) in drinking water from the 14th day of pregnancy until day 14 after delivery.

Oxidative stress induced by 2,4-phenoxyacetic acid in liver of female rats and their progeny: biochemical and histopathological studies.

The 2,4-Dichlorophenoxyacetic acid (2,4-D) was used in agriculture as an herbicide in many countries including Tunisia. The aim of this study was to evaluate the effects of 2,4-D on liver function of adult rats and their progeny. Female Wistar rats were divided into two groups: the controls and the treated rats which received 600 ppm of 2,4-D in their drinking water from the 14th day of pregnancy until day 14 after delivery.