A new class of higher-boiling solvents was investigated for elevated-temperature solid-phase parallel synthesis. Extremely low vapor pressures at high temperature and a broader range of solvent effect tuning make this new class of solvents an ideal choice for high-temperature parallel solid-phase synthesis. Benzyl benzoate is identified as a superior high-boiling solvent for parallel solid-phase Lawesson's thionation reactions.
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http://dx.doi.org/10.1021/ol027493s | DOI Listing |
Gels
February 2025
Department of Chemical Engineering & Analytical Science, University of Manchester, Oxford Rd., Manchester M13 9PL, UK.
In order to solve the problem of solid-phase particle settlement of high-density cement paste used in deep/ultra-deep wells, a temperature-responsive micro-cross-linking method was innovatively adopted to increase the viscosity and settlement stability of high-density cement paste at high temperatures. Through the self-developed suspension stabilizer and cross-linking agent to form micro-cross-linking gel at high temperature, the increase in high-temperature viscosity of cement paste was successfully realized without increasing the low-temperature viscosity of cement paste. Moreover, this micro-cross-linking reaction, together with the hydrophobic binding effect of the suspension stabilizer, strengthened the filamentary linkage network structure in the polymer solution with the formation of a lamellar linkage network structure.
View Article and Find Full Text PDFTalanta
June 2025
Guangzhou Center for Disease Control and Prevention, Guangzhou, 510440, China; School of Public Health, Guangzhou Medical University, Guangzhou, 510515, China. Electronic address:
Automated sample preparation reduces variation caused by human factors and improves efficiency, throughput, and reliability, making it especially important in large-scale epidemiological biomonitoring applications. In this study, we demonstrated an automated liquid-liquid extraction platform that streamlines sample preparation for human biomonitoring of urinary phthalate metabolites. This platform integrates temperature-controlled enzymatic hydrolysis, adds extraction solvents, conducts shaking extraction, performs centrifugal separation, and transfers liquids.
View Article and Find Full Text PDFFoods
November 2024
Department of Analytical Chemistry, Nutrition and Food Science, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.
The occurrence of carbonyl compounds and volatile organic compounds (VOCs) in adult formulas is a critical issue in product safety and quality. This research manuscript reports the determination of targeted and untargeted carbonyl compounds and VOCs in adult formulas stored at different temperatures (room temperature, 4 °C, and 60 °C) over one month. Gas chromatography-mass spectrometry was utilized for the sample analysis.
View Article and Find Full Text PDFNanomaterials (Basel)
October 2024
Institute for Smart Materials & Engineering, University of Jinan, No. 336 Nanxinzhuang West Road, Jinan 250022, China.
A series of red-emitting phosphors, NaY(PO):xEu, have been synthesized by a high-temperature solid-phase method. The impact of the partial Li/K ion substitution on the crystal structure and photoluminescence (PL) performance of NaY(PO):0.75Eu phosphor have been investigated.
View Article and Find Full Text PDFLangmuir
October 2024
School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, P.R. China.
The NaNiMnO cathode material draws ongoing interest owing to its considerable specific capacity along with its elevated average operating voltage. However, its application is limited by weak rate performance and quick capacity fading. In this study, a series of NaNiMnO ( = 0.
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