Category: 6. Chemistry
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Finger sweat test shows promise for checking that patients are taking antipsychotics | Research
Sweat from the fingertips could provide a more comfortable and convenient alternative to blood testing to check that patients are taking their antipsychotic drugs, UK researchers have found. The researchers, who were based at the University of Surrey, collected finger sweat samples from 60 patients receiving treatment with clozapine, quetiapine or olanzapine, before and after…
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How to use large language models in chemistry | Careers
Artificial intelligence (AI) has the potential to transform the way we work. For some, it presents endless opportunities, but for others it is something to approach with trepidation. GPT-4, launched in March 2023, is the newest version of OpenAI’s large language model (LLM) systems and uses deep learning to generate human-like, conversational text; it is…
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Unexpected reactivity of silica places question mark over safety of food additives | Research
Pure silica particles – which were thought to be inert and are widely used in food and cosmetics – can facilitate oxidation of cell-protecting antioxidant thiol molecules by converting them to disulfides. Although the study did not investigate the reaction in vivo, the team suggests its findings are concerning and recommends further studies to determine…
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Quantum Computer Reveals Atomic Dynamics of Light-Sensitive Molecules
Experimental results from a quantum computer (left) that match well with theory (right) are the first quantum-based method to show a quantum effect in the way light-absorbing molecules interact with incoming photons. Credit: Jacob Whitlow, Duke University A quantum computer slowed simulated molecular quantum effects by a billion times, allowing researchers to directly measure them…
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‘Ruhmkorff’s’ induction coil | Opinion
A few years ago, I heard a radio programme in which a set of panellists tried to identify a city from a few seconds of street sound. It was an enthralling puzzle, where clues might be gleaned from the cries of street traders, the songs of birds, snatches of music, and the odd bark or…
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New insight for stabilizing halide perovskite via thiocyanate substitution
α-FAPbI3, a promising solar cell material with a cubic perovskite structure that is metastable at room temperature, can be stabilized by introducing a pseudo-halide ion like thiocyanate (SCN–) into its structure, demonstrated by Tokyo Tech researchers in a new study. Their finding provides new insights into the stabilization of the α-phase via grain boundary and…
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Injectable, pore-forming, self-healing, and adhesive hyaluronan hydrogels for soft tissue engineering applications
Chemical characterizations The synthesis of HAMA photopolymers and the degree of methacrylation were verified and quantified by 1H NMR analysis, as shown in Fig. 2. The NMR spectrum of HA revealed the presence of HA methyl protons at 1.9 ppm. After methacrylation, the protons in methacrylate vinyl groups appeared at 5.6 ppm and 6.1 ppm. The MA methyl protons…
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Poly (safranine) modified carbon paste electrode as a sensor for the determination of fenitrothion pesticide
In this work, cyclic voltammetry (CV) as a characteristic tool was used to study the electrochemical behavior of fenitrothion on the modified CPE and the bare CPE. Cyclic voltammograms of 3 × 10–5 M fenitrothion in a 0.1M phosphate buffered solution at pH.6 on bare CPE and modified CPE with (safranine by electropolymerization) were recorded. The abroad…
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Functionalization of octaspherosilicate (HSiMe2O)8Si8O12 with buta-1,3-diynes by hydrosilylation
Gon, M., Tanaka, K. & Chujo, Y. Recent progress on designable hybrids with stimuli-responsive optical properties originating from molecular assembly concerning polyhedral oligomeric silsesquioxane. Chem. Asian J. 17, e202200144. https://doi.org/10.1002/asia.202200144 (2022). Article CAS PubMed Google Scholar Mohamed, M. G. & Kuo, S.-W. Progress in the self-assembly of organic/inorganic polyhedral oligomeric silsesquioxane (POSS) hybrids. Soft Matter…
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Catalyst- and metal-free C(sp2)–H bond selenylation of (N-hetero)-arenes using diselenides and trichloroisocyanuric acid at room temperature
General procedure for synthesis of selenylated-(N-hetero)-arenes by TCCA In a Schlenk tube equipped with a stirring bar was charged with the TCCA (0.35 mol equiv.) and diselenide 2 (0.55 mol equiv.) in 1.0 mL of anhydrous ethanol and let to react for 5 min. After that, was added the respective (N-hetero)-arenes (0.25 mmol) and 1.0 mL of anhydrous ethanol.…