keyword
https://read.qxmd.com/read/38546485/room-temperature-spin-crossover-properties-in-a-series-of-mixed-anion-fe-nh-2-trz-3-bf-4-2-x-sif-6-x-2-complexes
#1
JOURNAL ARTICLE
Xinyu Yang, Alejandro Enriquez-Cabrera, Kane Jacob, Yannick Coppel, Lionel Salmon, Azzedine Bousseksou
A series of mixed-anion Fe(NH2 trz)3 (BF4 )2- x (SiF6 ) x /2 spin crossover complexes is obtained modifying the reaction time but also using an increase amount of tetraethyl orthosilicate as the source for the production and the incorporation of SiF6 2- competing with the BF4 2- anions present in the mother solution. The increase of the SiF6 2- anion inclusion to the detriment of the BF4 - counterpart induces a shift of the temperature transition toward high temperatures leading to interesting bistability properties around room temperature with T 1/2 spanning from 300 K to 325 K...
March 28, 2024: Dalton Transactions: An International Journal of Inorganic Chemistry
https://read.qxmd.com/read/38544024/self-powered-intelligent-water-droplet-monitoring-sensor-based-on-solid-liquid-triboelectric-nanogenerator
#2
JOURNAL ARTICLE
Lijie Zhu, Likang Guo, Zhi Ding, Zhengqian Zhao, Chaoran Liu, Lufeng Che
Real-time monitoring of rainwater is a critical issue in the development of autonomous vehicles and smart homes, while the corresponding sensors play a pivotal role in ensuring their sensitivity. Here, we study a self-powered intelligent water droplet monitoring sensor based on a solid-liquid triboelectric nanogenerator (SL-TENG). The sensor comprises a SL-TENG, a signal acquisition module, a central processing unit (CPU), and a wireless transmission module, facilitating the real-time monitoring of water droplet signals...
March 8, 2024: Sensors
https://read.qxmd.com/read/38543270/continuous-microfluidic-antisolvent-crystallization-as-a-bottom-up-solution-for-the-development-of-long-acting-injectable-formulations
#3
JOURNAL ARTICLE
Snehashis Nandi, Laura Verstrepen, Mariana Hugo Silva, Luis Padrela, Lidia Tajber, Alain Collas
A bottom-up approach was investigated to produce long-acting injectable (LAI) suspension-based formulations to overcome specific limitations of top-down manufacturing methods by tailoring drug characteristics while making the methods more sustainable and cost-efficient. A Secoya microfluidic crystallization technology-based continuous liquid antisolvent crystallization (SCT-CLASC) process was optimized and afterward compared to an earlier developed microchannel reactor-based continuous liquid antisolvent crystallization (MCR-CLASC) setup, using itraconazole (ITZ) as the model drug...
March 8, 2024: Pharmaceutics
https://read.qxmd.com/read/38543049/a-study-on-the-adsorption-of-rhodamine-b-onto-adsorbents-prepared-from-low-carbon-fossils-kinetic-isotherm-and-thermodynamic-analyses
#4
JOURNAL ARTICLE
Aleksandra Bazan-Wozniak, Aleksandra Jędrzejczak, Robert Wolski, Sławomir Kaczmarek, Agnieszka Nosal-Wiercińska, Judyta Cielecka-Piontek, Sultan Yagmur-Kabas, Robert Pietrzak
The aim of this study was to obtain a series of activated carbon samples by the chemical activation of low-rank coal. The precursor was impregnated with a NaOH solution. Activated carbons were characterized by determining their textural parameters and content of surface oxygen functional groups and by using an elemental analysis. The carbons were tested as potential adsorbents for the removal of liquid pollutants represented by rhodamine B. The effectiveness of rhodamine B removal from water solutions depended on the initial concentration of the dye, the mass of rhodamine B, and the pH and temperature of the reaction...
March 21, 2024: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://read.qxmd.com/read/38543026/neurotensin-8-13-and-neuromedin-n-neuropeptides-radiolabelling-with-copper-64-produced-on-solid-or-liquid-targets
#5
JOURNAL ARTICLE
Diana Cocioabă, Alexandra I Fonseca, Radu Leonte, Ivanna Hrynchak, Roxana Tudoroiu-Cornoiu, Sergio J C do Carmo, Bogdan Burghelea, Simona Băruță, Ana Rita Almeida, Radu Șerban, Anca Dinischiotu, Antero J Abrunhosa, Dana Niculae
On the verge of a theranostic approach to personalised medicine, copper-64 is one of the emerging radioisotopes in nuclear medicine due to its exploitable nuclear and biochemical characteristics. The increased demand for copper-64 for preclinical and clinical studies has prompted the development of production routes. This research aims to compare the (p,n) reaction on nickel-64 solid versus liquid targets and evaluate the effectiveness of [64 Cu]CuCl2 solutions prepared by the two routes. As new treatments for neurotensin receptor-overexpressing tumours have developed, copper-64 was used to radiolabel Neurotensin (8-13) and Neuromedin N...
March 20, 2024: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://read.qxmd.com/read/38542902/rare-earth-extraction-from-phosphogypsum-by-aspergillus-niger-culture-broth
#6
JOURNAL ARTICLE
Jiangang Zhang, Xinyue Zhang, Xiangdong Su, Haijun Du, Yongzhong Lu, Qinglian Zhang
The extraction of rare earth elements (REEs) from phosphogypsum (PG) is of great significance for the effective utilization of rare earth resources and enhancing the resource value of PG waste residues. This study used Aspergillus niger ( A. niger ) fungal culture filtrate as a leaching agent to investigate the behavior of extracting REEs from PG through direct and indirect contact methods. According to the ICP-MS results, direct leaching at a temperature of 30 °C, shaking speed of 150 rpm, and a solid-liquid ratio of 2:1, achieved an extraction rate of 74% for REEs, with the main elements being yttrium (Y), lanthanum (La), cerium (Ce), and neodymium (Nd)...
March 13, 2024: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://read.qxmd.com/read/38542125/selective-removal-of-chlorophyll-and-isolation-of-lutein-from-plant-extracts-using-magnetic-solid-phase-extraction-with-iron-oxide-nanoparticles
#7
JOURNAL ARTICLE
Jolanta Flieger, Natalia Żuk, Sylwia Pasieczna-Patkowska, Marcin Kuśmierz, Rafał Panek, Wojciech Franus, Jacek Baj, Grzegorz Buszewicz, Grzegorz Teresiński, Wojciech Płaziński
In recent years, there has been a growing interest in plant pigments as readily available nutraceuticals. Photosynthetic pigments, specifically chlorophylls and carotenoids, renowned for their non-toxic antioxidant properties, are increasingly finding applications beyond their health-promoting attributes. Consequently, there is an ongoing need for cost-effective methods of isolation. This study employs a co-precipitation method to synthesize magnetic iron oxide nanoparticles. Scanning electron microscopy (SEM) coupled with energy dispersive spectrometry (EDS) confirms that an aqueous environment and oxidizing conditions yield nanosized iron oxide with particle sizes ranging from 80 to 140 nm...
March 9, 2024: International Journal of Molecular Sciences
https://read.qxmd.com/read/38541508/fabrication-of-ultra-fine-ag-nps-on-tio-2-thin-films-by-alcohol-assisted-photodeposition-process-for-photocatalysis-related-applications
#8
JOURNAL ARTICLE
Salih Veziroglu
Noble metal/semiconductor nanocomposites have been synthesized using various methods, including precipitation and hydrothermal and electrochemical processes. Among these, the photodeposition method stands out for its simplicity, without the need for high temperatures, redox agents, or complex steps. This method facilitates the control over noble metal nanoparticle size by adjusting parameters such as metal precursor concentration, irradiation time, and power. However, understanding the interaction between solid and liquid interfaces, particularly the role of solution viscosity in the growth process, remains a challenge...
March 15, 2024: Materials
https://read.qxmd.com/read/38540855/dispersive-solid-phase-extraction-and-ultra-performance-liquid-chromatography-tandem-mass-spectrometry-a-rapid-and-accurate-method-for-detecting-10-macrolide-residues-in-aquatic-products
#9
JOURNAL ARTICLE
Jinyu Chen, Guangming Mei, Xiaojun Zhang, Daoxiang Huang, Pengfei He, Dan Xu
The amount of macrolide (MAL) residues in aquatic products, including oleandomycin (OLD), erythromycin (ERM), clarithromycin (CLA), azithromycin (AZI), kitasamycin (KIT), josamycin (JOS), spiramycin (SPI), tilmicosin (TIL), tylosin (TYL), and roxithromycin (ROX), was determined using solid-phase extraction and ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The residues were extracted with 1% ammonia acetonitrile solution and purified by neutral alumina adsorption. Chromatographic separation was completed on an ACQUITY UPLC BEH C18 column with acetonitrile-0...
March 13, 2024: Foods (Basel, Switzerland)
https://read.qxmd.com/read/38538242/-determination-of-two-perfluorinated-compounds-in-urine-by-liquid-chromatography-tandem-mass-spectrometry
#10
JOURNAL ARTICLE
X H Chen, Q L Qiu
Objective: To establish a method for the determination of two perfluorinated compounds in urine by liquid chromatography-tandem mass spectrometry. Methods: In November 2022, urine samples were extracted by acidic methanol, purified by WAX solid phase extraction column, and eluted with methanol water, then Waters ACQUITY UPLC BEH C18 column (100 mm×2.1 mm, 1.7 μm) was used with 1.0 mmol/L ammonium acetate solution and methanol as mobile phase. The gradient elution was carried out, the detection was carried out by electrospray negative ion multiple response monitoring (MRM) mode, and the quantitative method was internal standard method...
March 20, 2024: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://read.qxmd.com/read/38536673/synthesis-and-exploration-of-barium-stannate-zirconate-basn-1-x-zr-x-o-3-0-%C3%A2-x-%C3%A2-1-solid-solutions-as-photocatalysts
#11
JOURNAL ARTICLE
Tarek Alammar, Anja-Verena Mudring
Employing ionic liquid-assisted microwave synthesis and moderate heat treatment allows for the preparation of otherwise difficult-to-obtain perovskite-type BaSn1- x Zr x O3 solid solutions (0 ≤ x ≤ 1). The impact of substituting Sn for the crystal structure, crystallinity, morphology, and photocatalytic performance was investigated. The obtained materials are characterized by X-ray diffraction, scanning electron microscopy, Brunauer-Emmett-Teller (BET) surface area analysis, X-ray photoelectron spectroscopy, UV-Vis diffuse reflectance spectroscopy, photoluminescence spectroscopy, and Raman and IR spectroscopy...
March 27, 2024: Inorganic Chemistry
https://read.qxmd.com/read/38535193/from-nature-to-design-tailoring-pure-mycelial-materials-for-the-needs-of-tomorrow
#12
REVIEW
Viraj Whabi, Bosco Yu, Jianping Xu
Modern efforts to influence materials science with principles of biology have allowed fungal mycelial materials to take a foothold and develop novel solutions for the circular bioeconomy of tomorrow. However, recent studies have shown that the value of tomorrow's green materials is not determined simply by their environmental viability, but rather by their ability to make the polluting materials of today obsolete. With an inherently strong structure of chitin and β-glucan, the ever-adaptable mycelia of fungi can compete at the highest levels with a litany of materials from leather to polyurethane foam to paper to wood...
February 28, 2024: Journal of Fungi (Basel, Switzerland)
https://read.qxmd.com/read/38533021/composite-polymer-electrolyte-based-on-poly-vinylidene-fluoride-hexafluoropropylene-pvdf-hfp-for-solid-state-batteries
#13
JOURNAL ARTICLE
Zhongran Yao, Fen Qi, Lin Ye, Qiang Sun, Xiaoyong Gu, Xiaowei Yang, Kongjun Zhu
Using solid-state electrolytes (SSEs) with excellent thermal and electrical stability to replace liquid electrolytes, and assembling solid-state lithium-ion batteries (SSLIBs) is considered the best solution to these safety issues. However, it is difficult for a single electrolyte to have the characteristics of high ionic conductivity, low interface resistance, and high stability of the counter electrode at the same time. In this work, the composite polymer electrolyte membrane (CPE) of inorganic Li1.3 Al0...
March 30, 2024: Heliyon
https://read.qxmd.com/read/38528740/aggregation-induced-emission-of-naphthalene-diimides-effect-of-chain-length-on-liquid-and-solid-phase-emissive-properties
#14
JOURNAL ARTICLE
Alberto Insuasty, Serena Carrara, Xuechen Jiao, Christopher R McNeill, Conor Hogan, Steven J Langford
The aggregation-induced emission (AIE) properties of a systematic series of naphthalene diimides (NDIs) varying the chain length at the imide positions have been studied. A solvophobic collapse of NDI units through the flash injection of THF NDI solutions in sonicating water triggers the formation of stable suspensions with enhanced fluorescence emissions. Shorter chains favor the π-π stacking of NDI units through H-aggregation producing a strong AIE effect showing remarkably high quantum yields that have not been observed for non core-substitued NDIs previously...
March 25, 2024: Chemistry, An Asian Journal
https://read.qxmd.com/read/38525893/silica-embedded-gold-nanoparticles-analyzed-by-atom-probe-tomography
#15
JOURNAL ARTICLE
Gustav Eriksson, Mats Hulander, Mattias Thuvander, Martin Andersson
Nanoparticles are utilized in a multitude of applications due to their unique properties. Consequently, characterization of nanoparticles is crucial, and various methods have been employed in these pursuits. One such method is Atom Probe Tomography (APT). However, existing sample preparation techniques for APT generally involve embedding of the nanoparticles in a matrix different from their environment in solutions or at solid-liquid interfaces. In this work, we demonstrate a methodology based on silica embedding and explore how it can be utilized to form a matrix for nanoparticles suitable for APT analysis...
March 25, 2024: Microscopy and Microanalysis
https://read.qxmd.com/read/38524417/quality-by-design-tool-assessed-ultraperformance-liquid-chromatography-method-for-the-analysis-of-remogliflozin-and-teneligliptin-in-oral-dosage-form
#16
JOURNAL ARTICLE
Jyothsna Menda, Vaishnavi Chintala, Phani Raja Kanuparthy, Naresh Kumar Katari, Leela Prasad Kowtharapu, Sreekantha Babu Jonnalagadda
The UPLC methodology was used to establish a method for determining the qualitative and quantitative content of teneligliptin and remogliflozin tablets in oral solid dose form, as no simultaneous method was available. The developed liquid chromatography method consists of an X-Bridge C18 100 mm × 3.5 mm, 2.1 mm column with an economical 0.2 mL/min flow rate. A wavelength of 248 nm was used for detection, and the temperature of the column compartment was 30 °C. The method was evaluated using a static tool quality by design after it was validated as per the regulations...
March 19, 2024: ACS Omega
https://read.qxmd.com/read/38522298/in-tube-solid-phase-extraction-with-graphitic-based-polyurethane-sponge-as-a-superhydrophobic-sorbent-and-determination-of-drug-residues-in-foodstuffs-using-high-performance-liquid-chromatography
#17
JOURNAL ARTICLE
Sidra Iram, Zahra Nazar, Muhammad Sajid, Thomas William Chamberlain, Muhammad Furqan Nawaz, Muhammad Mahboob Ahmed, Muhammad Kashif
Veterinary drugs used in animal husbandry raise public health concerns due to their residues in the bodies of animals. This study employs a simple and quick sample preparation technique, in-tube solid phase extraction, to extract drug residues from foodstuffs, including eggs, honey, and water. This technique utilizes the synergy of graphitic-based materials and polyurethane sponges (PU) combined through dip coating method to make reusable sorbents for extracting drugs, including amoxicillin, paracetamol, ciprofloxacin, and cefixime...
March 20, 2024: Food Chemistry
https://read.qxmd.com/read/38517395/dual-parasitic-effect-enables-highly-reversible-zn-metal-anode-for-ultralong-25-000-cycles-aqueous-zinc-ion-batteries
#18
JOURNAL ARTICLE
Chenhui Ma, Xin Wang, Wenqiang Lu, Konghua Yang, Nan Chen, Heng Jiang, Chunzhong Wang, Huijuan Yue, Dong Zhang, Fei Du
The use of electrolyte additives is an efficient approach to mitigating undesirable side reactions and dendrites. However, the existing electrolyte additives do not effectively regulate both the chaotic diffusion of Zn2+ and the decomposition of H2 O simultaneously. Herein, a dual-parasitic method is introduced to address the aforementioned issues by incorporating 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([EMIm]OTf) as cosolvent into the Zn(OTf)2 electrolyte. Specifically, the OTf- anion is parasitic in the solvent sheath of Zn2+ to decrease the number of active H2 O...
March 22, 2024: Nano Letters
https://read.qxmd.com/read/38517325/cu-i-coordination-compounds-conjugated-to-au-nanorods-for-future-applications-in-drug-delivery-insights-in%C3%A2-molecular-electronic-and-cu-local-structure-in-solid-and-liquid-phase
#19
JOURNAL ARTICLE
Alberto Lopez, Simone Amatori, Elena Olivieri, Iole Venditti, Giovanna Iucci, Carlo Meneghini, Federica Bertelà, Fabio Del Bello, Wilma Quaglia, Maura Pellei, Carlo Santini, Chiara Battocchio
In the framework of the design, synthesis and testing of a library of copper complexes and nanostructured assemblies potentially endowed with antitumor and antiviral activity and useful for several applications, from drugs and related delivery systems to the development of biocidal nanomaterials, we present the detailed spectroscopic investigation of the molecular and electronic structure of copper-based coordination compounds and of a new conjugated system obtained by grafting Cu(I) complexes to gold nanorods...
March 22, 2024: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://read.qxmd.com/read/38513370/all-in-one-treatment-capture-and-immobilization-of-137-cs-by-ultra-stable-inorganic-solid-acid-materials-hmmoo-6-%C3%A2-nh-2-o-m-ta-nb
#20
JOURNAL ARTICLE
Zhihua Chen, Shaoqing Jia, Haiyan Sun, Junhao Tang, Yanling Guo, Yuexin Yao, Tianyu Pan, Meiling Feng, Xiaoying Huang
Capture and immobilization of 137 Cs is urgent for radioactive contamination remediation and spent fuel treatment. Herein, an effective all-in-one treatment method to simultaneously adsorb and immobilize Cs+ without high-temperature treatment is proposed. According to the strategy of incorporating high-valency metal ions into molybdates to increase the material stability and affinity towards radionuclides, layered HMMoO6 ·nH2 O (M = Ta (1), Nb (2)) are prepared. Both materials exhibit excellent acid resistance (even 15 mol/L HNO3 )...
March 12, 2024: Water Research
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