Chemistry - An Asian Journal最新文献_第8页

Development of a Biodegradable BODIPY-ε-Caprolactone System for Rapid Colorimetric Detection of Fluoride Ions in Environmental Samples.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-03-08 DOI: 10.1002/asia.202500383

Chandan Kumar, Sangita Rajwar, Raja Shunmugam

{"title":"Development of a Biodegradable BODIPY-ε-Caprolactone System for Rapid Colorimetric Detection of Fluoride Ions in Environmental Samples.","authors":"Chandan Kumar, Sangita Rajwar, Raja Shunmugam","doi":"10.1002/asia.202500383","DOIUrl":"10.1002/asia.202500383","url":null,"abstract":"Fluoride ions (F-) are well-known for their beneficial effects on oral health and their involvement in acting osteoporosis. But it is crucial to understand that consuming too much fluoride can of several adverse health effects. Dental fluorosis, urolithiasis, and even cancer can result from excessive fluoride exposure. This is why monitoring fluoride levels is so important. A 2,4-dinitrophenyl hydrazine derivative of a BODIPY-based aldehyde system (BDNP) is a sensitive, ratiometric, and selective naked-eye sensor that we have developed for the quick detection of fluoride ions in biological and environment samples showed a significant color change from pink-to-grey and a significant redshift in absorbance maxima when interacting with fluoride ions. The notable color shift demonstrates the effectiveness of both BDNP and Poly-BDNP in detecting fluoride ions. Interestingly, here we also showed that the ring-opening polymerization (ROP) technique-synthesized biodegradable and biocompatible ε-Caprolactone homopolymer of BDNP (Poly-BDNP) is a great system that can detect fluoride ions colorimetrically with a higher limit of detection (LOD) value than the monomer and rapid detection ability. Using the UV-visible spectroscopy study and the 1H NMR spectroscopic titration technique, the interaction between BDNP and fluoride ions was examined. It was determined that the deprotonation of N-H protons triggers the intermolecular charge transfer (ICT) reaction, which results in the system's dramatic color change. The precision of both BDNP and Poly-BDNP in detecting F- ions with LOD values of 7.73 µM and 87.9 nM, respectively, is determined by the ratiometric absorbance change of the sensor during the sensing process.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202500383"},"PeriodicalIF":3.5,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Visible Light-Induced Energy Transfer Mediated Regioselective C-3 Thiolation of Imidazoheterocycles using Bunte Salts.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-03-07 DOI: 10.1002/asia.202401875

Sehdev Kumar, Anoop Sharma, Raman Kumar, Anuj Sharma

引用次数: 0

Exploration into the Synthesis and Sodium Storage Characteristics of Hard Carbon Derived from Plastics. 探索从塑料中提取的硬碳的合成和钠储存特性。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-03-07 DOI: 10.1002/asia.202401804

Shuai Ruan, Xinping He, Hui Huang, Yongping Gan, Yang Xia, Jun Zhang, Fangfang Tu, Jiayuan Xiang, Wangjun Wan, Chen Wang, Xinhui Xia, Wenkui Zhang

{"title":"Exploration into the Synthesis and Sodium Storage Characteristics of Hard Carbon Derived from Plastics.","authors":"Shuai Ruan, Xinping He, Hui Huang, Yongping Gan, Yang Xia, Jun Zhang, Fangfang Tu, Jiayuan Xiang, Wangjun Wan, Chen Wang, Xinhui Xia, Wenkui Zhang","doi":"10.1002/asia.202401804","DOIUrl":"10.1002/asia.202401804","url":null,"abstract":"The crux for the advancement of high-performance sodium-ion batteries resides in the development of low-cost, high-performance hard carbon anode materials. In this study, waste plastics are utilized as precursors to prepare plastic-derived hard carbon materials through a simple high-temperature one-step carbonization method, which is particularly suitable for new energy storage devices such as sodium-ion batteries and supercapacitors. Through in-depth exploration, we discover that the initial coulombic efficiency of hard carbon is intimately associated with its structure, within which the PU material exhibits the attributes of high capacity, initial coulombic efficiency, and excellent cycle performance, meriting further optimization of hard carbon precursor materials. In this study, a novel idea of preparing a high-performance hard carbon anode by a low-carbon and environmentally friendly method is proposed, and the key factors influencing the electrochemical performance of hard carbon materials are revealed, providing a valuable experimental basis for the further development of sodium anodes.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401804"},"PeriodicalIF":3.5,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Supramolecular Polymers of Amino Triazines vs. Amino Pyrimidines in Aqueous Solution: How Key Interactions Control their Thermodynamic Stability. 水溶液中氨基三嗪与氨基嘧啶的超分子聚合物：关键相互作用如何控制其热力学稳定性。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-03-07 DOI: 10.1002/asia.202401905

José Leonardo Gómez Chávez, Matías Orlando Miranda, Emilio Luis Angelina, Silvana Carina Pamies, Nélida María Peruchena, Andre Nicolai Petelski

{"title":"Supramolecular Polymers of Amino Triazines vs. Amino Pyrimidines in Aqueous Solution: How Key Interactions Control their Thermodynamic Stability.","authors":"José Leonardo Gómez Chávez, Matías Orlando Miranda, Emilio Luis Angelina, Silvana Carina Pamies, Nélida María Peruchena, Andre Nicolai Petelski","doi":"10.1002/asia.202401905","DOIUrl":"https://doi.org/10.1002/asia.202401905","url":null,"abstract":"Supramolecular polymers (SPs) based on the stacking of hydrogen-bonded rosettes are attracting increasing attention due to their potential applications as soft materials. However, a detailed description of the interactions that give rise to these one-dimensional architectures is still scarce in the literature. In this work, we use molecular dynamics to analyze in aqueous solution the stability of two SPs based on amino triazines (AT) and amino pyrimidines (AP) modified with a hydrophilic chain of succinic acid (-saH). Our results reveal that the AT-based polymers are stable in both their neutral and anionic (succinate -sa-) forms. In contrast, the anionic AP-based polymer is completely dissociated in the presence of sodium cations. While chloride anions can stabilize AT polymers and even induce helical coordination, sodium cations destabilize the AP polymer by penetrating its structure and coordinating with the N atoms, thereby disrupting the hydrogen bonds of the rosettes. On the contrary, the AT-sa- monomers are able to hold back sodium cations due to their extra endocyclic N atom. The side chains are also essential for the formation of these SPs. In summary, we show how non-covalent interactions can be strategically used to control the stability of these systems.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401905"},"PeriodicalIF":3.5,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Z-enoate Assisted Meyer-Schuster Rearrangement with Thiol Nucleophiles. An Approach for the Functionalized Vinyl Sulfides, and Sulfones.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-03-07 DOI: 10.1002/asia.202500080

Beeraiah Baire, Sumran Raikwar

引用次数: 0

Novel Sb₂S₃-3,4,9,10-Perylene Tetracarboxylic Acid Composite for Enhanced Photocatalytic Reduction of Cr(VI) in Aqueous Media. 新型 Sb2S3-3,4,9,10-perylene tetracarboxylic acid 复合材料用于增强水介质中 Cr(VI) 的光催化还原。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-03-06 DOI: 10.1002/asia.202401708

Yongshan Ma, Qingxiang Guan, Qingbo Huang, Xuewu Zhu, Fengxia Zhang, Tianyi Jiang, Yanyan Zhu, Xuemei Li

{"title":"Novel Sb₂S₃-3,4,9,10-Perylene Tetracarboxylic Acid Composite for Enhanced Photocatalytic Reduction of Cr(VI) in Aqueous Media.","authors":"Yongshan Ma, Qingxiang Guan, Qingbo Huang, Xuewu Zhu, Fengxia Zhang, Tianyi Jiang, Yanyan Zhu, Xuemei Li","doi":"10.1002/asia.202401708","DOIUrl":"10.1002/asia.202401708","url":null,"abstract":"The construction of organic-inorganic semiconductor heterojunctions is an important way to improve the photocatalytic performance of semiconductors and inhibit the recombination of photogenerated charge carriers. In this paper, a novel Sb₂S₃-3,4,9,10-perylene tetracarboxylic acid (Sb2S3-PTCA) heterojunction was prepared by hydrothermal method. Compared with Sb2S3 and PTCA, Sb2S3-PTCA composite catalyst had better photocatalytic reduction ability for Cr(VI) in aqueous solution under visible light conditions. The optimized Sb2S3-1.0 wt.% PTCA heterostructures exhibited significantly enhanced photocatalytic activity compared to pure Sb₂S₃ and PTAC, achieving a complete Cr(VI) reduction rate of 100 % in just 50 min. This will lead to cleaner effluent water being discharged into the environment, thereby reducing pollution and protecting aquatic ecosystems. The enhanced photocatalytic efficacy exhibited by the Sb2S3-PTCA heterostructure stems from the creation of a type II heterojunction, which facilitates a more proficient dissociation and transportation of the electron-hole pairs, thus contributing to its superior performance.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401708"},"PeriodicalIF":3.5,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnesium-Mediated Cyanosilylation and Hydroboration of Arene and N-Heteroarene Aldehydes: An Experimental and Theoretical Study.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-03-06 DOI: 10.1002/asia.202401853

Darakshan Parveen, Sougata Saha, Rahul Kumar Yadav, Swapan K Pati, Dipak Kumar Roy

{"title":"Magnesium-Mediated Cyanosilylation and Hydroboration of Arene and N-Heteroarene Aldehydes: An Experimental and Theoretical Study.","authors":"Darakshan Parveen, Sougata Saha, Rahul Kumar Yadav, Swapan K Pati, Dipak Kumar Roy","doi":"10.1002/asia.202401853","DOIUrl":"10.1002/asia.202401853","url":null,"abstract":"In recent years, there has been a noteworthy expansion in the field of main-group compounds, attributed to their intrinsic capacity for the activation of small molecules. In this regard, the alkaline earth metal complexes have garnered important attention. Herein, we showed the utilization of a Mg complex Mg-1 as a catalyst in cyanosilylation reactions involving several aromatic and aliphatic aldehydes, conducted under mild reaction conditions. Although complex Mg-1 demonstrated its effectiveness in this transformation, complexes Mg-2 and Mg-3 yielded lower amounts of cyanosilylated products, highlighting the influence of the ligand spacer in catalytic activity. To further assess this effect, a mononuclear magnesium complex, Mg-4, was synthesized and the catalytic performance of Mg-4 in the cyanosilylation of aldehydes was found to be lower than that of Mg-1. This study establishes that magnesium complexes can independently catalyze the cyanosilylation of aldehydes, with those featuring an oxygen-bridged spacer exhibiting enhanced catalytic efficiency. Furthermore, employing complex Mg-1, we explored the cyanosilylation and hydroboration reactions involving N-heteroarene carboxaldehyde, an area with limited substrate scopes. Experimental and theoretical studies were performed to establish the mechanism which shows that the cyanosilylation reaction initiates with the initial coordination of trimethylsilyl cyanide (TMSCN) with the catalyst, followed by the subsequent attack of aldehydes. Whereas, in the hydroboration reaction, HBpin first reacts with the Mg complex Mg-1 to form Mg-H, which subsequently reacts with the aldehyde to form a hydroborylated product via a four-membered transition state.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401853"},"PeriodicalIF":3.5,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Engineering Ni(OH)2 with Pd for Efficient Electrochemical Urea Oxidation

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-03-06 DOI: 10.1002/asia.202401188

Nijita Mathew, Radha Rathod, Sougata Saha, Pralay K. Santra, Swapan K. Pati, Muthusamy Eswaramoorthy

{"title":"Engineering Ni(OH)2 with Pd for Efficient Electrochemical Urea Oxidation","authors":"Nijita Mathew, Radha Rathod, Sougata Saha, Pralay K. Santra, Swapan K. Pati, Muthusamy Eswaramoorthy","doi":"10.1002/asia.202401188","DOIUrl":"10.1002/asia.202401188","url":null,"abstract":"Urea-assisted water electrolysis is a promising and energy-efficient alternative to electrochemical water splitting due to its low thermodynamic potential of 0.37 V, which is 860 mV less than that needed for water splitting (1.23 V). Ni(OH)2 has proven to be an efficient catalyst for this reaction. However, the non-spontaneous desorption of CO2 molecules from the catalyst surface leads to active site poisoning, which significantly impacts its long-term stability. Herein, we have demonstrated that Pd incorporated NiOH2 (Pd/Ni(OH)2) results in a significant decrease in the overpotential by 40 mV at 10 mA cm−2 as compared to Ni(OH)2. The decrease in the Tafel slope and charge transfer resistance of Pd/Ni(OH)2 indicates an improvement in the kinetics of the reaction, resulting in a maximum current density of 380 mA cm−2 at 1.5 V, which is higher than that observed for Ni(OH)2 (180 mA cm−2). XAS analysis was utilized to determine the nature of the metal species in the catalyst. It revealed that while Pd predominantly exists in its metallic state within the bulk of the catalyst, the surface is enriched with the oxide phase. The presence of Pd prevents the strong adsorption of CO2 at the active site in Pd/Ni(OH)2, resulting in a substantial improvement of stability of up to 300 h as compared to Ni(OH)2. DFT calculations were performed to explore the detailed reaction mechanism of urea oxidation on Ni(OH)2 and Pd/Ni(OH)2. These calculations provided further insight into the experimental observations and evaluated the contribution of Pd in enhancing the catalytic efficiency of Ni(OH)2. Additionally, the operando Raman and IR spectroscopy were used to understand the formation of the active sites and the intermediates during urea electrooxidation.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"20 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Probing the Slow Relaxation of Magnetization of a Square Planar Cobalt Complex with Doublet Ground State.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-03-06 DOI: 10.1002/asia.202401798

Kamal Uddin Ansari, Dipanti Borah, Amaleswari Rasamsetty, Pardeep Kumar, Muralidharan Shanmugam, Gopalan Rajaraman, Maheswaran Shanmugam

{"title":"Probing the Slow Relaxation of Magnetization of a Square Planar Cobalt Complex with Doublet Ground State.","authors":"Kamal Uddin Ansari, Dipanti Borah, Amaleswari Rasamsetty, Pardeep Kumar, Muralidharan Shanmugam, Gopalan Rajaraman, Maheswaran Shanmugam","doi":"10.1002/asia.202401798","DOIUrl":"10.1002/asia.202401798","url":null,"abstract":"The observation of slow relaxation of magnetization in low-spin square planar cobalt complexes is exceedingly rare, likely due to the synthetic challenges of stabilizing such geometries, along with the complexities introduced by hyperfine interactions and spin-orbit coupling. Additionally, accurately characterizing the ground-state electronic configuration of these complexes remains a significant challenge. In this article, we report a unique and rare square planar cobalt complex, [Co(L1⋅-)2] (1), where the coordination sites are occupied by the phenanthroiminoquinone (L1). The molecular structure of complex 1 was determined using single-crystal X-ray diffraction studies. A structurally analogous nickel complex, [NiII(L1⋅-)2] (2), was also synthesized and characterized. Detailed DC magnetic susceptibility measurements of 2 reveal strong antiferromagnetic exchange interactions between the radical centers, rendering it diamagnetic. For cobalt complex 1, this strong antiferromagnetic coupling results in a doublet ground state, as corroborated by X-band EPR measurements (at 5 K) conducted on both polycrystalline and frozen solution samples. To gain deeper insights into the electronic structure of the cobalt ion in 1, a comprehensive suite of experimental and theoretical investigations was conducted, including X-ray diffraction, DC magnetic studies, X-band EPR, UV-Vis-NIR spectroscopy, and ab initio calculations. These studies collectively indicate that the cobalt ion in 1 exists in a divalent low-spin state. Furthermore, the observed slow relaxation of magnetization for the doublet state of 1 highlights its potential as an ideal candidate for designing spin-based molecular qubits.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401798"},"PeriodicalIF":3.5,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and application of Solid Solution Materials in Heterogeneous Photocatalysis.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-03-06 DOI: 10.1002/asia.202401737

Qiang Wang, Le Yang, Li Li, Jun Liang

引用次数: 0