ABX-type hybrid organic-inorganic structures have recently emerged as a new class of meltable materials. Here, by the use of phenylphosphonium derivatives as A cation, we study liquid- and glass-forming behavior of a new family of hybrid structures, (RPhP)[Mn(dca)] (R = Me, Et, Ph; dca = dicyanamide). These new compounds melt at 196-237 °C () and then vitrify upon cooling to room temperature, forming glasses.
View Article and Find Full Text PDFBackground: In assisted reproductive technology (ART), the choice between intracytoplasmic sperm injection (ICSI) and conventional in vitro insemination (IVF) remains a pivotal decision for couples with female or unexplained infertility. The hypothesis that ICSI may not confer significant improvements in live birth rates in the absence of a male infertility factor was explored in this study.
Methods: This was a retrospective collection of data recorded by the Human Fertilisation and Embryology Authority (HFEA) in the UK from 2005 to 2018 and analysed through regression analysis models on both the entire dataset and a matched-pair subset.
Ge substitution into the recently discovered superionic conductor LiSiSI is demonstrated by synthesis of LiSiGeSI, where x≤1.2. The anion packing and tetrahedral silicon location of LiSiSI are retained upon substitution.
View Article and Find Full Text PDFExploration of compositional disorder using conventional diffraction-based techniques is challenging for systems containing isoelectronic ions possessing similar coherent neutron scattering lengths. Here, we show that a multinuclear solid-state Nuclear Magnetic Resonance (NMR) approach provides compelling insight into the Ga/Ge cation distribution and oxygen anion transport in a family of solid electrolytes with langasite structure and LaGaGeO composition. Ultrahigh field Ga Magic Angle Spinning (MAS) NMR experiments acquired at 35.
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