Molecules, Vol. 29, Pages 2026: Mn2Ga2S5 and Mn2Al2Se5 van der Waals Chalcogenides: A Source of Atomically Thin Nanomaterials
. Verchenko
Layered chalcogenides containing 3d transition metals are promising for the development of two-dimensional nanomaterials with interesting magnetic properties. Both mechanical and solution-based exfoliation of atomically thin layers is possible due to the low-energy van der Waals bonds. In this paper, we present the synthesis and crystal structures of the Mn2Ga2S5 and Mn2Al2Se5 layered chalcogenides. For Mn2Ga2S5, we report magnetic properties, as well as the exfoliation of nanofilms and nanoscrolls. The synthesis of both polycrystalline phases and single crystals is described, and their chemical stability i...
Source: Molecules - April 28, 2024 Category: Chemistry Authors: Ivan V. Chernoukhov Alexey V. Bogach Kirill A. Cherednichenko Ruslan A. Gashigullin Andrei V. Shevelkov Valeriy Yu. Verchenko Tags: Article Source Type: research
Molecules, Vol. 29, Pages 2027: Selective Removal of Hemicellulose by Diluted Sulfuric Acid Assisted by Aluminum Sulfate
This study provides a new approach for the high-selectivity separation of hemicellulose, thereby offering novel insights for its subsequent high-value utilization. (Source: Molecules)
Source: Molecules - April 28, 2024 Category: Chemistry Authors: Huabin Jiang Jiaqi Nie Lei Zeng Fei Zhu Zhongwang Gao Aiping Zhang Jun Xie Yong Chen Tags: Article Source Type: research
Molecules, Vol. 29, Pages 2031: Preparation and Performance Verification of a Solid Slow-Release Carbon Source Material for Deep Nitrogen Removal in Urban Tailwater
This study selected two SRCs of slow-release carbon source 1 (SRC1) and slow-release carbon source 2 (SRC2), with good slow-release performance after static carbon release and batch experiments. The composition of SRC1 was: hydroxypropyl methylcellulose/disodium fumarate/polyhydroxy alkanoate (HPMC/DF/PHA) at a ratio of 3:2:4, with an Fe3O4 mass fraction of 3%. The composition of SRC2 was: HPMC/DF/PHA with a ratio of 1:1:1 and an Fe3O4 mass fraction of 3%. The fitted equations of carbon release curves of SRC1 and SRC2 were y = 61.91 + 7190.24e−0.37t and y = 47.92 + 8770.42e−0.43t, respectively. ...
Source: Molecules - April 28, 2024 Category: Chemistry Authors: Zhang Luo Hongtao Shi Hanghang Lyu Hang Shi Bo Liu Tags: Article Source Type: research
Molecules, Vol. 29, Pages 2030: Theoretical Study of p-Block Metal Single-Atom-Loaded Carbon Nitride Catalyst for Photocatalytic Water Splitting
Sen Lin
Graphitic carbon nitride (g-C3N4), recognized for its considerable potential as a heterogeneous photocatalyst in water splitting, has attracted extensive research interest. By using density functional theory (DFT) calculations, the regulatory role of p-block metal (PM) single atoms on the photocatalytic activity of g-C3N4 in overall water splitting was systematically explored. The incorporation of PM atoms (Ge, Sn and Pb) led to a reduction in the overpotentials required for both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER). Combined with the electronic structures analysis via h...
Source: Molecules - April 28, 2024 Category: Chemistry Authors: Mengning Chen Yidi Wu Qiang Wan Sen Lin Tags: Article Source Type: research
Molecules, Vol. 29, Pages 2029: Exploring the Key Amino Acid Residues Surrounding the Active Center of Lactate Dehydrogenase A for the Development of Ideal Inhibitors
jun Zhang
Lactate dehydrogenase A (LDHA) primarily catalyzes the conversion between lactic acid and pyruvate, serving as a key enzyme in the aerobic glycolysis pathway of sugar in tumor cells. LDHA plays a crucial role in the occurrence, development, progression, invasion, metastasis, angiogenesis, and immune escape of tumors. Consequently, LDHA not only serves as a biomarker for tumor diagnosis and prognosis but also represents an ideal target for tumor therapy. Although LDHA inhibitors show great therapeutic potential, their development has proven to be challenging. In the development of LDHA inhibitors, the key acti...
Source: Molecules - April 28, 2024 Category: Chemistry Authors: Jie Chen Chen Chen Zhengfu Zhang Fancai Zeng Shujun Zhang Tags: Article Source Type: research
Molecules, Vol. 29, Pages 2028: Target Cell Extraction and Spectrum & ndash;Effect Relationship Coupled with BP Neural Network Classification for Screening Potential Bioactive Components in Ginseng Extract with a Protective Effect against Myocardial Damage
This study offers a reference for quality control in red ginseng and preparations containing red ginseng for the management of cardiovascular diseases. It also provides ideas for screening active ingredients of the same type of multi-pharmacologically active traditional Chinese medicines. (Source: Molecules)
Source: Molecules - April 28, 2024 Category: Chemistry Authors: Junyi Li Min Lin Zexin Xie Liwenyu Chen Jin Qi Boyang Yu Tags: Article Source Type: research
Molecules, Vol. 29, Pages 2033: Generation of Eroded Nanoplastics from Domestic Wastes and Their Impact on Macrophage Cell Viability and Gene Expression
This study reports an innovative approach for producing nanoplastics (NP) from various types of domestic waste plastics without the use of chemicals. The plastic materials used included water bottles, styrofoam plates, milk bottles, centrifuge tubes, to-go food boxes, and plastic bags, comprising polyethylene terephthalate (PET), polystyrene (PS), polypropylene (PP), high-density polyethylene (HDPE), and Poly (Ethylene-co-Methacrylic Acid) (PEMA). The chemical composition of these plastics was confirmed using Raman and FTIR spectroscopy, and they were found to have irregular shapes. The resulting NP particles ranged from 5...
Source: Molecules - April 28, 2024 Category: Chemistry Authors: Mohammad Saiful Islam Indrani Gupta Li Xia Arjun Pitchai Jonathan Shannahan Somenath Mitra Tags: Article Source Type: research
Molecules, Vol. 29, Pages 2032: Synthesis and Application of Salicylhydrazone Probes with High Selectivity for Rapid Detection of Cu2+
Li Zhang
Ju Guo
Using the aldehyde amine condensation procedure and the triphenylamine group as the skeleton structure, the new triphenylamine-aromatic aldehyde-succinylhydrazone probe molecule DHBYMH was created. A newly created acylhydrazone probe was structurally characterized by mass spectrometry (MS), NMR, and infrared spectroscopy (FTIR). Fluorescence and UV spectroscopy were used to examine DHBYMH’s sensing capabilities for metal ions. Notably, DHBYMH achieved a detection limit of 1.62 × 10−7 M by demonstrating exceptional selectivity and sensitivity towards Cu2+ ion...
Source: Molecules - April 28, 2024 Category: Chemistry Authors: Tianzhu Shi Zhengfeng Xie Xinliang Mo Yulong Feng Tao Peng Fuyong Wu Mei Yu Jingjing Zhao Li Zhang Ju Guo Tags: Article Source Type: research
Molecules, Vol. 29, Pages 2034: Effects of Central Metal Ion on Binuclear Metal Phthalocyanine-Based Redox Mediator for Lithium Carbonate Decomposition
Haiyong He
Li2CO3 is the most tenacious parasitic solid-state product in lithium–air batteries (LABs). Developing suitable redox mediators (RMs) is an efficient way to address the Li2CO3 issue, but only a few RMs have been investigated to date, and their mechanism of action also remains elusive. Herein, we investigate the effects of the central metal ion in binuclear metal phthalocyanines on the catalysis of Li2CO3 decomposition, namely binuclear cobalt phthalocyanine (bi-CoPc) and binuclear cobalt manganese phthalocyanine (bi-CoMnPc). Density functional theory (DFT) calculations indicate that the key ...
Source: Molecules - April 28, 2024 Category: Chemistry Authors: Qinghui Yan Linghui Yan Haoshen Huang Zhengfei Chen Zixuan Liu Shaodong Zhou Haiyong He Tags: Article Source Type: research
Molecules, Vol. 29, Pages 2036: Novel Bicyclic P,S-Heterocycles via Stereoselective hetero-Diels & ndash;Alder Reactions of Thiochalcones with 1-Phenyl-4H-phosphinin-4-one 1-Oxide
Molecules, Vol. 29, Pages 2036: Novel Bicyclic P,S-Heterocycles via Stereoselective hetero-Diels–Alder Reactions of Thiochalcones with 1-Phenyl-4H-phosphinin-4-one 1-Oxide
Molecules doi: 10.3390/molecules29092036
Authors:
Grzegorz Mlostoń
Katarzyna Urbaniak
Marcin Palusiak
Elżbieta Łastawiecka
Sławomir Frynas
Kazimierz Michał Pietrusiewicz
Heinz Heimgartner
Thiochalcones undergo cycloaddition reactions in THF solution at 60 °C with the synthetically unexplored 1-phenyl-4H-phosphinin-4-one 1-oxide in a highly regio- and stereoselective manner, yielding hitherto unknown bicyclic...
Source: Molecules - April 28, 2024 Category: Chemistry Authors: Grzegorz Mlosto ń Katarzyna Urbaniak Marcin Palusiak El żbieta Łastawiecka S ławomir Frynas Kazimierz Micha ł Pietrusiewicz Heinz Heimgartner Tags: Article Source Type: research
Molecules, Vol. 29, Pages 2035: Microwave-Assisted Atom Transfer Radical Cyclization in the Synthesis of 3,3-Dichloro- & gamma;- and & delta;-Lactams from N-Alkenyl-Tethered Trichloroacetamides Catalyzed by RuCl2(PPh3)3 and Their Cytotoxic Evaluation
Molecules, Vol. 29, Pages 2035: Microwave-Assisted Atom Transfer Radical Cyclization in the Synthesis of 3,3-Dichloro-γ- and δ-Lactams from N-Alkenyl-Tethered Trichloroacetamides Catalyzed by RuCl2(PPh3)3 and Their Cytotoxic Evaluation
Molecules doi: 10.3390/molecules29092035
Authors:
Faïza Diaba
Alexandra G. Sandor
María del Carmen Morán
An expeditious synthesis of γ- and δ-lactams from tethered alkenyl trichloroacetamides in the presence of 5% of RuCl2(PPh3)3 is reported. In this investigation we have demonstrated that microwave activation significantly enhan...
Source: Molecules - April 28, 2024 Category: Chemistry Authors: Fa ïza Diaba Alexandra G. Sandor Mar ía del Carmen Morán Tags: Article Source Type: research
Molecules, Vol. 29, Pages 2037: Investigating the Sole Olefin-Based Cycle in Small-Cage MCM-35-Catalyzed Methanol-to-Olefins Reactions
uang Lv
Small-pore zeolites catalyze the methanol-to-olefins (MTO) reaction via a dual-cycle mechanism, encompassing both olefin- and aromatic-based cycles. Zeolite topology is crucial in determining both the catalytic pathway and the product selectivity of the MTO reaction. Herein, we investigate the mechanistic influence of MCM-35 zeolite on the MTO process. The structural properties of the as-synthesized MCM-35 catalyst, including its confined cages (6.19 Å), were characterized, confirming them as the catalytic centers. Then, the MTO reactions were systematically performed and investigated over a MCM-3...
Source: Molecules - April 28, 2024 Category: Chemistry Authors: Zhaohui Liu Min Mao Ruixue Yangcheng Shuang Lv Tags: Article Source Type: research
Molecules, Vol. 29, Pages 2021: Bioremediation of Hazardous Pollutants Using Enzyme-Immobilized Reactors
aki
Bioremediation uses the degradation abilities of microorganisms and other organisms to remove harmful pollutants that pollute the natural environment, helping return it to a natural state that is free of harmful substances. Organism-derived enzymes can degrade and eliminate a variety of pollutants and transform them into non-toxic forms; as such, they are expected to be used in bioremediation. However, since enzymes are proteins, the low operational stability and catalytic efficiency of free enzyme-based degradation systems need improvement. Enzyme immobilization methods are often used to overcome these challenges....
Source: Molecules - April 27, 2024 Category: Chemistry Authors: Hiroshi Yamaguchi Masaya Miyazaki Tags: Review Source Type: research
Molecules, Vol. 29, Pages 2023: Heat-Insulated Regenerated Fibers with UV Resistance: Silk Fibroin/Al2O3 Nanoparticles
Guohua Wu
The various wastes generated by silkworm silk textiles that are no longer in use are increasing, which is causing considerable waste and contamination. This issue has attracted widespread attention in countries that use a lot of silk. Therefore, enhancing the mechanical properties of regenerated silk fibroin (RSF) and enriching the function of silk are important directions to expand the comprehensive utilization of silk products. In this paper, the preparation of RSF/Al2O3 nanoparticles (NPs) hybrid fiber with different Al2O3 NPs contents by wet spinning and its novel performance are reported. It was found ...
Source: Molecules - April 27, 2024 Category: Chemistry Authors: Jianjun Guo Song Lu Yi Zhou Yuanyuan Yang Xiaoxian Yao Guohua Wu Tags: Article Source Type: research
Molecules, Vol. 29, Pages 2022: Tailoring FXR Modulators for Intestinal Specificity: Recent Progress and Insights
ndy
While FXR has shown promise in regulating bile acid synthesis and maintaining glucose and lipid homeostasis, undesired side effects have been observed in clinical trials. To address this issue, the development of intestinally restricted FXR modulators has gained attention as a new avenue for drug design with the potential for safer systematic effects. Our review examines all currently known intestinally restricted FXR ligands and provides insights into the steps taken to enhance intestinal selectivity. (Source: Molecules)
Source: Molecules - April 27, 2024 Category: Chemistry Authors: Amanda Morrison Bahaa Elgendy Tags: Review Source Type: research
