New Journal of Chemistry最新文献

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MoS2/NixSy/NF heterojunction catalyst for efficient oxygen evolution reaction† 高效析氧反应的MoS2/NixSy/NF异质结催化剂
IF 2.7 3区 化学
New Journal of Chemistry Pub Date : 2025-05-06 DOI: 10.1039/D5NJ00971E
Ting Xie, Jicheng Wu, Zhanpeng Han, Dandan Wu and Guojian Jiang
{"title":"MoS2/NixSy/NF heterojunction catalyst for efficient oxygen evolution reaction†","authors":"Ting Xie, Jicheng Wu, Zhanpeng Han, Dandan Wu and Guojian Jiang","doi":"10.1039/D5NJ00971E","DOIUrl":"https://doi.org/10.1039/D5NJ00971E","url":null,"abstract":"<p >The development of highly efficient and stable non-noble metal catalysts is crucial for advancing the oxygen evolution reaction (OER). In this study, a flower-branch-like MoS<small><sub>2</sub></small>/Ni<small><sub><em>x</em></sub></small>S<small><sub><em>y</em></sub></small>/NF heterostructure was synthesized using a one-step hydrothermal method as an effective OER electrocatalyst. X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HRTEM) confirmed the formation of a heterojunction and nickel's shift to a higher oxidation state. The heterojunction enhanced electronic interactions, enriched active sites, and facilitated electron transfer, while Ni<small><sup>3+</sup></small> promoted OH<small><sup>−</sup></small> adsorption, boosting OER kinetics. Interfacial charge transfer from Ni<small><sub><em>x</em></sub></small>S<small><sub><em>y</em></sub></small> to MoS<small><sub>2</sub></small> activates the inert basal planes of MoS<small><sub>2</sub></small>, enhancing intermediate adsorption. The Ni<small><sub>3</sub></small>S<small><sub>2</sub></small>/NiS heterointerface optimizes OER intermediate adsorption energy, significantly improving catalytic activity. This unique structure provides abundant active sites (<em>C</em><small><sub>dl</sub></small> = 75.6 mF cm<small><sup>−2</sup></small>), enhances charge transfer (<em>R</em><small><sub>ct</sub></small> = 2.3 Ω), and reduces the water dissociation barrier, leading to an exceptional Tafel slope of 61 mV dec<small><sup>−1</sup></small> that outperforms those of single-phase catalysts. Additionally, SO<small><sub>4</sub></small><small><sup>2−</sup></small> leaching during the OER may aid the conversion of nickel sulfide to the NiOOH species, further improving performance. The MoS<small><sub>2</sub></small>/Ni<small><sub><em>x</em></sub></small>S<small><sub><em>y</em></sub></small>/NF catalyst showed a low overpotential of 150 mV at 10 mA cm<small><sup>−2</sup></small>, indicating excellent activity. It also demonstrated remarkable stability, with negligible decay after 50 hours under alkaline and simulated seawater conditions. This work underscores the importance and the key role of heterojunctions in enhancing electrocatalytic performance for the OER, and offers new insights for designing high-performance OER electrocatalysts.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 21","pages":" 8732-8742"},"PeriodicalIF":2.7,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140104","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
Preparation of NaV6O15/V2CTX composite materials for room-temperature ammonia sensing 室温氨传感用NaV6O15/V2CTX复合材料的制备
IF 2.7 3区 化学
New Journal of Chemistry Pub Date : 2025-05-06 DOI: 10.1039/D5NJ01102G
Yuanyuan Zhou, Zhe Zhang, Baojie Shi and Jiangwei Ma
{"title":"Preparation of NaV6O15/V2CTX composite materials for room-temperature ammonia sensing","authors":"Yuanyuan Zhou, Zhe Zhang, Baojie Shi and Jiangwei Ma","doi":"10.1039/D5NJ01102G","DOIUrl":"https://doi.org/10.1039/D5NJ01102G","url":null,"abstract":"<p >MXenes exhibit promise for room temperature sensing owing to their processability in solution, substantial surface area and minimal resistance. The research on vanadium-based oxides (NaV<small><sub>6</sub></small>O<small><sub>15</sub></small>) has focused on catalytic applications (H<small><sub>2</sub></small>S oxidation) and energy storage (sodium-ion and zinc-ion batteries), showing that NaV<small><sub>6</sub></small>O<small><sub>15</sub></small> possesses structural stability and adjustable chemical properties, which suggests that it is a potential gas sensing material. This study introduces a facile method for synthesizing NaV<small><sub>6</sub></small>O<small><sub>15</sub></small>/V<small><sub>2</sub></small>CT<small><sub><em>X</em></sub></small> composites by calcining V<small><sub>2</sub></small>CT<small><sub><em>X</em></sub></small> MXene precursors in an air atmosphere. The composite material maintains the open layered structure of the V<small><sub>2</sub></small>CT<small><sub><em>X</em></sub></small> MXene precursor. The conductive network of MXene and the chemical reactivity of vanadium oxides were used to improve room-temperature ammonia (NH<small><sub>3</sub></small>) sensing capabilities. Gas sensitivity assessments reveal a response of 2.5% to 100 ppm NH<small><sub>3</sub></small> at room temperature. The response decay was less than 30% over 27 days of continuous testing, demonstrating exceptional long-term stability. This investigation is the first application of NaV<small><sub>6</sub></small>O<small><sub>15</sub></small> in gas sensing applications, offering novel perspectives on the development of low-power, highly durable MXene-based NH<small><sub>3</sub></small> sensors.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 20","pages":" 8361-8367"},"PeriodicalIF":2.7,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090880","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
Synthesis of carbon quantum dots from neem fruit flesh for dual metal sensing, bioimaging, and antibacterial applications† 从印楝果肉合成碳量子点用于双金属传感,生物成像和抗菌应用†
IF 2.7 3区 化学
New Journal of Chemistry Pub Date : 2025-05-06 DOI: 10.1039/D5NJ00292C
Kannan Vellaisamy, Ayerathal Velmurugan, Esakkimuthu Shanmugasundaram, Nithesh Kumar Krishnan, Vaseeharan Baskaralingam, Ashokkumar Sibiya and Stalin Thambusamy
{"title":"Synthesis of carbon quantum dots from neem fruit flesh for dual metal sensing, bioimaging, and antibacterial applications†","authors":"Kannan Vellaisamy, Ayerathal Velmurugan, Esakkimuthu Shanmugasundaram, Nithesh Kumar Krishnan, Vaseeharan Baskaralingam, Ashokkumar Sibiya and Stalin Thambusamy","doi":"10.1039/D5NJ00292C","DOIUrl":"https://doi.org/10.1039/D5NJ00292C","url":null,"abstract":"<p >This study reports a straightforward one-step synthesis of carbon quantum dots (CQDs) derived from neem fruit flesh, a readily accessible natural biosource. The synthesized neem fruit flesh-derived CQDs (NFF-CQDs) exhibited excellent optical properties with a quantum yield of 0.2209. Their size, functional groups, and surface charge were analyzed using HR-TEM, FT-IR, and DLS. These NFF-CQDs demonstrated dual metal-sensing capabilities: fluorescence enhancement for Al<small><sup>3+</sup></small> ions and fluorescence quenching for Fe<small><sup>3+</sup></small> ions, enabling the selective and sensitive detection of both metal ions at nanomolar concentrations. The Benesi–Hildebrand and Stern–Volmer plots indicated that Fe<small><sup>3+</sup></small> ions bound more strongly than Al<small><sup>3+</sup></small> ions. Additionally, NFF-CQDs exhibited low toxicity in MCF-7 cell bioimaging and enhanced antibacterial activity against <em>E. coli</em> under blue light irradiation.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 20","pages":" 8413-8427"},"PeriodicalIF":2.7,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090951","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
4,4′-Dimethyl-1,1′-bi(1,2,3-triazole): exploring new insensitive energy source materials† 4,4 ' -二甲基-1,1 ' -双(1,2,3-三唑):探索新的不敏感能源材料†
IF 2.7 3区 化学
New Journal of Chemistry Pub Date : 2025-05-06 DOI: 10.1039/D5NJ00679A
Hao Li, Guang-yuan Zhang, Ning-ning Du, Le-wu Zhan, Jing Hou and Bin-dong Li
{"title":"4,4′-Dimethyl-1,1′-bi(1,2,3-triazole): exploring new insensitive energy source materials†","authors":"Hao Li, Guang-yuan Zhang, Ning-ning Du, Le-wu Zhan, Jing Hou and Bin-dong Li","doi":"10.1039/D5NJ00679A","DOIUrl":"https://doi.org/10.1039/D5NJ00679A","url":null,"abstract":"<p >The safety and thermal stability of energetic materials have attracted increasing attention, while the development of simpler synthesis routes is also one of the main goals pursued by researchers in the field of energetic materials. To meet these needs, a novel energy-containing compound 4,4′-dimethyl-1,1′-bi(1,2,3-triazole) (<strong>2</strong>) with low mechanical sensitivity was synthesized from pyruvaldehyde and hydrazine hydrate in this work, which provided a new way of constructing long nitrogen compounds. The structure of energetic compound <strong>2</strong> was characterized by NMR (<small><sup>1</sup></small>H and <small><sup>13</sup></small>C), infrared spectroscopy (IR) and X-ray crystallography. The results showed that <strong>2</strong> is mechanically insensitive (IS = 30 J, FS = 160 N) with detonation properties (<em>D</em> = 6844 m s<small><sup>−1</sup></small>, <em>P</em> = 16 GPa).</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 20","pages":" 8437-8441"},"PeriodicalIF":2.7,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090953","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
tert-Butylnitrite promoted one-component based direct synthesis of 2-cyano substituted maleimide probes and their fluorescence turn-off sensing towards Fe3+† 叔丁基亚硝酸盐促进了单组分直接合成2-氰基取代马来酰亚胺探针及其对Fe3+†的荧光关闭传感
IF 2.7 3区 化学
New Journal of Chemistry Pub Date : 2025-05-06 DOI: 10.1039/D4NJ05011H
Prabhat Sarkar, Shuba Paul, Supratim Das, Tania Chowdhury, Subham Mandal, Sanchita Goswami, Asim Bhaumik and Chhanda Mukhopadhyay
{"title":"tert-Butylnitrite promoted one-component based direct synthesis of 2-cyano substituted maleimide probes and their fluorescence turn-off sensing towards Fe3+†","authors":"Prabhat Sarkar, Shuba Paul, Supratim Das, Tania Chowdhury, Subham Mandal, Sanchita Goswami, Asim Bhaumik and Chhanda Mukhopadhyay","doi":"10.1039/D4NJ05011H","DOIUrl":"https://doi.org/10.1039/D4NJ05011H","url":null,"abstract":"<p >Herein, we report a fluorescent probe, 2-cyano substituted maleimide, for the efficient detection of iron (+3) ions. This novel transformation proceeds in the presence of <em>tert</em>-butylnitrite, avoiding expensive ligands or additives or amines and has a broad substrate scope affording a variety of 2-cyano substituted maleimides in moderate to good yields. However, this intramolecular cyclization is a one-component as well as one-pot based reaction protocol.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 22","pages":" 9484-9490"},"PeriodicalIF":2.7,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206365","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
Template-free synthesis of honeycomb-structured Ta3N5 foam nanoplates with expanded light absorption, abundant active sites and fast charges transport for visible-light-driven H2 evolution† 蜂窝状结构Ta3N5泡沫纳米板的无模板合成,具有扩展的光吸收,丰富的活性位点和快速电荷输运的可见光驱动H2演化†
IF 2.7 3区 化学
New Journal of Chemistry Pub Date : 2025-05-06 DOI: 10.1039/D5NJ00730E
Jiudi Zhang, Ruyu Zhang, Xiaowei Jia, Jinming Li, Mingliang Sun, Shikang Zhang, Zhenfu Guo, Xiaoyan Jiao, Xianchun Liu, Zhanshuang Jin, Junjie Li and Yan Xing
{"title":"Template-free synthesis of honeycomb-structured Ta3N5 foam nanoplates with expanded light absorption, abundant active sites and fast charges transport for visible-light-driven H2 evolution†","authors":"Jiudi Zhang, Ruyu Zhang, Xiaowei Jia, Jinming Li, Mingliang Sun, Shikang Zhang, Zhenfu Guo, Xiaoyan Jiao, Xianchun Liu, Zhanshuang Jin, Junjie Li and Yan Xing","doi":"10.1039/D5NJ00730E","DOIUrl":"https://doi.org/10.1039/D5NJ00730E","url":null,"abstract":"<p >Tantalum nitride (Ta<small><sub>3</sub></small>N<small><sub>5</sub></small>) with suitable band structure and high theoretical solar-to-hydrogen energy conversion efficiency (15.9%) is regarded as one of the most promising semiconductor-based photocatalysts for hydrogen evolution <em>via</em> water splitting. However, it is practically constrained by the slow carrier mobility, fast electron–hole recombination and unabundant catalytic active sites. Herein, honeycomb-structured Ta<small><sub>3</sub></small>N<small><sub>5</sub></small> foam nanoplates were successfully synthesized using a simple template-free strategy. It can not only capture broader visible light to generate the high concentration of photo-generated carriers, but also accelerate the rapid transport/separation of carriers and provide abundant active sites to accelerate the kinetics of water splitting reaction. Therefore, honeycomb-structured Ta<small><sub>3</sub></small>N<small><sub>5</sub></small> exhibits excellent photocatalytic performance with a remarkably enhanced H<small><sub>2</sub></small> production rate of 59.16 μmol h<small><sup>−1</sup></small> g<small><sup>−1</sup></small>, which is 22.7 times higher than that of the conventional bulk Ta<small><sub>3</sub></small>N<small><sub>5</sub></small>. Moreover, the unique Ta<small><sub>3</sub></small>N<small><sub>5</sub></small> with honeycomb structure has outstanding stability and recycling ability. This work provides a simple and effective strategy for the preparation of Ta<small><sub>3</sub></small>N<small><sub>5</sub></small>-based photocatalysts for efficient and stable H<small><sub>2</sub></small> production.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 20","pages":" 8485-8493"},"PeriodicalIF":2.7,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090819","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
Innovative CuBTC/g-C3N4 materials for tetracycline mitigation: adsorption, photocatalysis, and mechanistic perspectives† 创新的CuBTC/g-C3N4四环素减缓材料:吸附,光催化和机理观点
IF 2.7 3区 化学
New Journal of Chemistry Pub Date : 2025-05-06 DOI: 10.1039/D5NJ00556F
Palkaran Sethi, Soumen Basu and Sanghamitra Barman
{"title":"Innovative CuBTC/g-C3N4 materials for tetracycline mitigation: adsorption, photocatalysis, and mechanistic perspectives†","authors":"Palkaran Sethi, Soumen Basu and Sanghamitra Barman","doi":"10.1039/D5NJ00556F","DOIUrl":"https://doi.org/10.1039/D5NJ00556F","url":null,"abstract":"<p >The widespread accumulation of antibiotic pollutants in water sources calls for advanced and efficient remediation strategies to curb environmental contamination. In this study, a CuBTC (copper benzene-1,3,5-tricarboxylate) with g-C<small><sub>3</sub></small>N<small><sub>4</sub></small> heterojunction photocatalyst was synthesized <em>via</em> a hydrothermal approach in varying ratios (1 : 1, 1 : 3, and 3 : 1) and comprehensively characterized using XRD, FESEM, EDS, HRTEM, EIS, UV-DRS, PL, TGA, FTIR, XPS, and BET measurements, confirming the composite's crystallinity, morphology, elemental composition, charge transport properties, optical behavior, stability, and porosity. Among the tested compositions, the 3 : 1 CuBTC/g-C<small><sub>3</sub></small>N<small><sub>4</sub></small> composite exhibited the highest efficiency, achieving an impressive 97.4% degradation of 25 ppm tetracycline (TC) within just 60 minutes under UV illumination, with a remarkable rate constant of 0.02098 min<small><sup>−1</sup></small>. Stability assessments confirmed its excellent reusability over six consecutive cycles, with only a slight decline in performance to 82.7%. The adsorption behaviour of the composite was analyzed using six isotherm models—Langmuir, Freundlich, Halsey, Harkins–Jura, Temkin, and Dubinin–Radushkevich—along with five kinetic models, including pseudo-first-order, pseudo-second-order, intraparticle diffusion, Elovich, and liquid film models. Adsorption followed the Langmuir isotherm (<em>R</em><small><sup>2</sup></small> = 0.992) and pseudo-second-order kinetics (<em>R</em><small><sup>2</sup></small> = 0.968), while photocatalytic degradation aligned with pseudo-second-order kinetics (<em>R</em><small><sup>2</sup></small> = 0.993). Mechanistic studies identified superoxide radicals as the primary reactive species, supported by hydroxyl radicals, electrons, and holes in the degradation pathway. Mineralization studies revealed significant reductions in TOC (67.8%) and COD (68.6%), while LC-MS analysis provided a comprehensive degradation pathway, illustrating the breakdown of TC into intermediates through ring-opening and oxidative transformations. Thermodynamic assessments indicated that the degradation process was exothermic and spontaneous. Δ<em>G</em>, Δ<em>H</em> and Δ<em>S</em> values were found to be 92.7 J mol<small><sup>−1</sup></small>, −63.84 kJ mol<small><sup>−1</sup></small>, and −0.214 kJ mol<small><sup>−1</sup></small> K<small><sup>−1</sup></small> respectively.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 20","pages":" 8454-8471"},"PeriodicalIF":2.7,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/nj/d5nj00556f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis and characterization of transition metal-based polyoxometalates for dual sensing of biomarkers such as nitrite ions and hydrogen sulphide† 用于亚硝酸盐离子和硫化氢双传感的过渡金属基多金属氧酸盐的合成和表征
IF 2.7 3区 化学
New Journal of Chemistry Pub Date : 2025-05-06 DOI: 10.1039/D5NJ01092F
Celin T and Gandhimathi S
{"title":"Synthesis and characterization of transition metal-based polyoxometalates for dual sensing of biomarkers such as nitrite ions and hydrogen sulphide†","authors":"Celin T and Gandhimathi S","doi":"10.1039/D5NJ01092F","DOIUrl":"https://doi.org/10.1039/D5NJ01092F","url":null,"abstract":"<p >Accelerated industrial development and expansion have led to increasing concentrations of pollutants, such as nitrite ions (NO<small><sub>2</sub></small><small><sup>−</sup></small>) and hydrogen sulphide (H<small><sub>2</sub></small>S) in water. Theses biomarkers can be monitored using polyoxometalates, which are known for their versatile redox properties. In this study, we have synthesized three POMs, (NH<small><sub>4</sub></small>)<small><sub>8</sub></small>[Cu<small><sub>2</sub></small>Mo<small><sub>10</sub></small>O<small><sub>22</sub></small>(O<small><sub>2</sub></small>)<small><sub>12</sub></small>] (<strong>1</strong>), [Cu(arg)<small><sub>2</sub></small>]<small><sub>3</sub></small>[Mo<small><sub>6</sub></small>SO<small><sub>24</sub></small>] (<strong>2</strong>) and [Cu(glu)]<small><sub>2</sub></small>[CuMoO<small><sub>4</sub></small>(OH)<small><sub>4</sub></small>] (<strong>3</strong>), <em>via</em> a one-pot synthesis for the detection of NO<small><sub>2</sub></small><small><sup>−</sup></small> ions. Studies such as FT-IR analysis, UV-visible spectra, NMR spectroscopy, EPR spectroscopy, Powder X-ray diffraction and SEM-EDX analysis were used to understand the structure of the POMs. The influence of pH on the electrochemical behavior of Cu-POMs <strong>1</strong>, <strong>2</strong> and <strong>3</strong> was analyzed through cyclic voltammetry (CV) and bulk electrolysis at a potential of −0.8 to 1.4 V. The influence of the scan rate was analyzed using a [Fe(CN)<small><sub>6</sub></small>]<small><sup>4−/3−</sup></small> redox couple. The electrocatalytic detection of nitrite ions was determined using a potential of −1 to 1.5 V and 0.5 V–1.5 V to record CV and differential pulse voltammetry (DPV). Results show that Cu-POM <strong>1</strong> exhibited higher detection capability over a concentration range of 5 μM–0.1 M. Cu-POM <strong>2</strong> showed detection for the concentration range of 5–400 μM. The antioxidant activity of the POMs followed the trend <strong>2</strong> &gt; <strong>1</strong> &gt; <strong>3</strong>. The colorimetric detection of H<small><sub>2</sub></small>S could be performed over a concentration range of 1–100 mM.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 20","pages":" 8472-8484"},"PeriodicalIF":2.7,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090956","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
(2S,5S)-5-(Methylamino)-4,4-diphenyl-1,3,2-dioxaphosphorinane-2-oxide as a preligand in palladium-catalyzed asymmetric allylic alkylation† (2S,5S)-5-(甲氨基)-4,4-二苯基-1,3,2-二磷-2-氧化物作为钯催化不对称烯丙基烷基化反应的预配体
IF 2.7 3区 化学
New Journal of Chemistry Pub Date : 2025-05-05 DOI: 10.1039/D5NJ01122A
I. V. Chuchelkin, A. I. Lukankov, V. K. Gavrilov, I. D. Firsin, E. S. Rud, N. E. Borisova, A. S. Novikov, A. N. Rodionov and K. N. Gavrilov
{"title":"(2S,5S)-5-(Methylamino)-4,4-diphenyl-1,3,2-dioxaphosphorinane-2-oxide as a preligand in palladium-catalyzed asymmetric allylic alkylation†","authors":"I. V. Chuchelkin, A. I. Lukankov, V. K. Gavrilov, I. D. Firsin, E. S. Rud, N. E. Borisova, A. S. Novikov, A. N. Rodionov and K. N. Gavrilov","doi":"10.1039/D5NJ01122A","DOIUrl":"https://doi.org/10.1039/D5NJ01122A","url":null,"abstract":"<p >A <em>P</em>-chiral oxygen-substituted secondary phosphine oxide was synthesized from the bicyclophosphoramidite precursor using a straightforward method without participation of bases and aggressive phosphorus trihalides. Its use in the Pd-catalyzed asymmetric allylic alkylation (AAA) of (<em>E</em>)-1,3-diphenylallyl acetate and (<em>E</em>)-1,3-diphenylallyl ethyl carbonate with dialkyl malonates provided up to 62% ee with predominant formation of (<em>R</em>)-products. It was shown that, when <em>N</em>,<em>O</em>-bis(trimethylsilyl)acetamide (BSA) and KOAc were used as a combined base, the true inducer of chirality was a P(<small>III</small>)-trimethylsilyl derivative formed by the reaction of the oxygen-substituted phosphine oxide with an excess of BSA in the reaction medium. The starting bicyclic phosphoramidite provided the opposite sign of asymmetric induction in the alkylation of (<em>E</em>)-1,3-diphenylallyl acetate with dimethyl malonate and afforded a significantly lower enantiomeric excess (22% (<em>S</em>)). The P(<small>III</small>)-trimethylsilyl compound and its Pd(<small>II</small>) allyl complexes were obtained <em>in situ</em> and characterized by NMR spectroscopy and high-resolution mass spectrometry.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 22","pages":" 9331-9335"},"PeriodicalIF":2.7,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206273","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
Direct synthesis of ethanolamine-capped alcohol-soluble Zn-doped SnO2 nanocrystals and their application in quantum dot light-emitting diodes† 乙醇胺包封醇溶锌掺杂SnO2纳米晶体的直接合成及其在量子点发光二极管中的应用
IF 2.7 3区 化学
New Journal of Chemistry Pub Date : 2025-05-05 DOI: 10.1039/D5NJ01308A
Ying Xu, Mengxin Liu, Xinan Shi and Daocheng Pan
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