New Journal of Chemistry最新文献

{"title":"4-Amino-1,2,3-triazine 2-oxide: a promising structural unit for the design and synthesis of novel energetic materials with good thermal stability and low impact sensitivity†","authors":"Ziwu Cai, Junhao Shi, Qian Yu, Tianyu Jiang and Wenquan Zhang","doi":"10.1039/D4NJ04219K","DOIUrl":"https://doi.org/10.1039/D4NJ04219K","url":null,"abstract":"<p >A new [6,6]-fused ring energetic molecule, 4-amino-6,8-dinitrobenzo[<em>d</em>][1,2,3]triazine 2-oxide (<strong>1</strong>), was designed and synthesised using 4-amino-1,2,3-triazine 2-oxide as the basic skeleton unit. Subsequently, an amino group was incorporated into the corresponding position of compound <strong>1</strong><em>via</em> a vicarious nucleophilic substitution (VNS) reaction, resulting in the formation of 4,5-diamino-6,8-dinitrobenzo[<em>d</em>][1,2,3]triazine 2-oxide (<strong>2</strong>). Despite the introduction of adjacent C–NO<small>₂</small>/C–NH<small>₂</small> blocks into the molecular structure of compound <strong>2</strong>, which is generally accepted to contribute to the increase in the thermal decomposition temperature of energetic molecules, the results of thermal analysis demonstrated that the thermal decomposition temperature of compound <strong>2</strong> (<em>T</em><small>_d</small> = 285 °C) was lower than that of its precursor (<em>T</em><small>_d</small> = 311 °C). This suggested that the incorporation of adjacent C–NO<small>₂</small>/C–NH<small>₂</small> blocks into the molecular structure did not inevitably lead to the formation of novel energetic molecules with enhanced thermal decomposition temperatures. To elucidate the mechanism behind this phenomenon, the structures of compounds <strong>1</strong> and <strong>2</strong> were subjected to detailed analysis using X-ray diffraction and quantum chemical calculations. Both <strong>1</strong> and <strong>2</strong> displayed high resistance to mechanical impact and were prepared using straightforward methods. The aforementioned results suggested that both <strong>1</strong> and <strong>2</strong> can be employed as heat-resistant, insensitive energetic materials.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 1","pages":" 302-310"},"PeriodicalIF":2.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826066","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}

{"title":"Electronic structure adjustment of 3D transition bimetallic phosphate/reduced graphene oxide as a hybrid electrocatalyst for the HER†","authors":"Jianzhi Wang, Hongyi Chen, Hongliang Yu, Wangshu Tang, Yuanhang Wu, Yijie Yang, Yu Luo, Jie Yang and Faquan Yu","doi":"10.1039/D4NJ04036H","DOIUrl":"https://doi.org/10.1039/D4NJ04036H","url":null,"abstract":"<p >Designing efficient and cost-effective nonprecious electrocatalysts for the hydrogen evolution reaction (HER) in alkaline solution still remains a significant challenge. Herein, we fabricated a three-dimensional (3D) transition bimetallic phosphate/reduced graphene oxide grown <em>in situ</em> on a nickel foam (NiCoP@rGO/NF) for the HER in alkaline media. NiCoP@rGO/NF exhibits a unique three-dimensional spherical nanostructure with a large specific surface area and short diffusion path, which are conducive to the transfer of electrons. NiCoP@rGO/NF requires an overpotential of only 94 mV at a current density of 10 mA cm<small>⁻²</small>, with a low Tafel slope (39 mV dec<small>⁻¹</small>), and demonstrates excellent durability in 1.0 M KOH condition. Our work provides a new idea for designing high-performance HER electrocatalysts, which are highly needed in various practical applications.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 3","pages":" 970-978"},"PeriodicalIF":2.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976276","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}

{"title":"Three-dimensional TiO2 nanobelt array with a disordered surface and oxygen vacancies for boosted photoelectrochemical water splitting†","authors":"Ming Meng, Hucheng Zhou, Weifeng Liu, Jing Yang, Honglei Yuan and Zhixing Gan","doi":"10.1039/D4NJ03722G","DOIUrl":"https://doi.org/10.1039/D4NJ03722G","url":null,"abstract":"<p >The exploitation of photoelectrode materials with high-efficiency utilization of solar light, an outstanding separation property of photogenerated charges and a large surface area is extremely important yet significantly challenging. Herein, a three-dimensional array of reduced TiO<small>₂</small> nanobelts with a disordered surface and abundant oxygen vacancies was successfully constructed for PEC water splitting. As expected, the reduced 3D-TiO<small>₂</small> nanobelt array produced a photocurrent density of 0.96 mA cm<small>⁻²</small> at 0.22 V <em>vs.</em> Ag/AgCl with a faradaic efficiency of 100%, corresponding to 2.4 times enhancement compared with that of the pristine 3D-TiO<small>₂</small> nanobelt array. Furthermore, IPCE was improved within both the UV and visible light regions. This enhancement originates primarily from the efficient utilization of UV-visible light as well as the promoted separation and transport of photogenerated charges induced by the cooperative effect of the disordered surface and oxygen vacancies. This research sheds new light on exploiting TiO<small>₂</small> nanobelts for PEC applications.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 3","pages":" 886-892"},"PeriodicalIF":2.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976268","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}

{"title":"One-pot synthesis of 1,3-oxazine derivatives catalyzed by a green nanocomposite of lacunary phosphomolybdate on TiO2/g-C3N4 under mild solvent-free conditions†","authors":"Maryam Bahmanziyari and Hossein Naeimi","doi":"10.1039/D4NJ03766A","DOIUrl":"https://doi.org/10.1039/D4NJ03766A","url":null,"abstract":"<p >In this research, a new and efficient nanocomposite composed of a heteropolyacid stabilized on mesoporous titanium oxide and graphitic carbon nitride was introduced. The prepared nanocomposite was analyzed and characterized using XRD, FE-SEM, EDX elemental mapping, Raman, TGA, TEM and BET techniques. An investigation of the three-component condensation reaction of aromatic aldehydes, 2-naphthol and urea was carried out using H<small>₃</small>PMo<small>₁₁</small>O<small>₃₉</small>@TiO<small>₂</small>@g-C<small>₃</small>N<small>₄</small> as a nanocatalyst at 80 °C under solvent-free conditions. As a result of the synthesis of 1,3-oxazine derivatives, short reaction times (5–12 min), mild conditions, high product yields (85–95%), purity, easy preparation, compatibility with the environment, low cost, chemical stability and high selectivity were obtained. Furthermore, it is easy to recover the prepared nanocomposites through filtration, and they can be reused for at least five runs in the reaction without losing their catalytic activities.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 3","pages":" 865-876"},"PeriodicalIF":2.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976266","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}

{"title":"DBU-mediated synthesis of amides from carbodiimides and unstrained 1,3-diketones†","authors":"Chang-Qing Qin, Xin-Ni Liu, Man-Zhen Gu, Yi-Bing Xu, Guo-Shu Chen and Yun-Lin Liu","doi":"10.1039/D4NJ04537H","DOIUrl":"https://doi.org/10.1039/D4NJ04537H","url":null,"abstract":"<p >A DBU-mediated synthesis of amides by using the readily available carbodiimides as nitrogen sources and unstrained 1,3-ketones as acyl sources has been developed. This reaction proceeds through the cleavage of two C<img>N bonds of the carbodiimides, two C(CO)–C bonds of 1,3-diketones and the formation of two new C(CO)–N bonds, simultaneously.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 2","pages":" 366-370"},"PeriodicalIF":2.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912628","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}

{"title":"Application of alkaline ionic liquid/Brønsted acid synergistic catalysis for the synthesis of cyclic carbonates from aliphatic diols and CO2†","authors":"Bing Fang, Haiyue Wang, Wei Chang, Yibang Yao, Liying Guo, Yuanyuan Zhao and Bing Liu","doi":"10.1039/D4NJ04742G","DOIUrl":"https://doi.org/10.1039/D4NJ04742G","url":null,"abstract":"<p >The utilization of aliphatic diols as a substitute for epoxides in the reaction with CO<small>₂</small> to produce cyclic carbonates offers a cost-effective and less hazardous synthesis route. This approach aligns with green chemistry principles and presents new strategies to combat climate change. This study primarily focuses on the innovative application of an alkaline ionic liquid in conjunction with a Brønsted acid for the catalytic synthesis of cyclic carbonates from CO<small>₂</small> and aliphatic diols. Three alkaline ionic liquid catalysts [DBUH]PHY, [TBDH]PHY, and [DBUH]TBD were successfully synthesized using 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD), and phenol as precursors. Their chemical structures and thermal properties were systematically characterized using Fourier-transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance (<small>¹</small>H-NMR), carbon nuclear magnetic resonance (<small>¹³</small>C-NMR), and thermogravimetric (TG) analysis. The catalytic performance of the three alkaline ionic liquids combined with various Brønsted acids (including sulfuric acid, phosphoric acid, and acetic acid) for the synthesis of ethylene carbonate (EC) from ethylene glycol (EG) and CO<small>₂</small> was investigated. The results demonstrated that the combination of [DBUH]PHY with sulfuric acid (H<small>₂</small>SO<small>₄</small>) exhibited the best synergetic catalytic effect. Subsequently, the process parameters were optimized to study the effects of reaction temperature, pressure, time, and catalyst loading on catalytic performance. Under optimized conditions, the catalytic efficiency of [DBUH]PHY and sulfuric acid in the synthesis of cyclic carbonates from different aliphatic diols, including ethylene glycol, propylene glycol (1,2- and 1,3-), and butanediol (1,4-), was explored. This study successfully achieved the activation of aliphatic diols and CO<small>₂</small> through cooperative catalysis of alkaline ionic liquids and Brønsted acids, providing an innovative catalytic system for research in this field.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 3","pages":" 746-754"},"PeriodicalIF":2.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976378","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}

{"title":"Carbon nanotube supported spherical NiFe-spinel heterostructure for sensitive electrochemical detection of aristolochic acid†","authors":"Hongmei Jiang, Mei Zhang, Wenjun Liu, Jinyu Guan, Qinyi Cao, Jun Fang, Hao Yao, Xia Wang, Jun Zhong and Xiaoying Liu","doi":"10.1039/D4NJ03817G","DOIUrl":"https://doi.org/10.1039/D4NJ03817G","url":null,"abstract":"<p >Aristolochic acid (AA) has strong carcinogenicity, and it has been reported that the medicinal and edible plant <em>Houttuynia cordata</em> may contain AA. Among transition metals, nickel and iron have outstanding catalytic ability for nitro reduction. The multivalent NiFe<small>₂</small>O<small>₄</small> (NFO), which effectively promotes the redox reaction, has become a promising electrochemical material. In this work, we innovatively used a one-pot hydrothermal method to prepare NFO <em>in situ</em> on the surface of carbon nanotubes. For the first time, the composite NiFe<small>₂</small>O<small>₄</small>@MWCNTs (NFO@CNTs) was utilized to build a sensitive electrochemical sensor for detecting AA. The NFO@CNTs/GCE exhibited strong electrochemical performance due to the synergistic effect of high catalytic activity of NFO and good conductivity of carbon nanotubes. Furthermore, in order to provide a basis for the safe use of <em>Houttuynia cordata</em>, the electrochemical senor was successfully applied to detect AA in Chinese herbal medicines, confirming its practicability in real samples. This work broadens the application of nickel ferrite, which is expected to be a new candidate material for sensors.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 1","pages":" 273-280"},"PeriodicalIF":2.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826062","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}

{"title":"TADF-emitting copper(i) and silver(i) complexes featuring intra-ligand charge transfer based on a donor–acceptor–donor ligand†","authors":"Xinwei Wang, Weijun Li, Xiao Li, Chenlu Hou, Sanyue Wei, Wenxin Lei and Xu-Lin Chen","doi":"10.1039/D4NJ04193C","DOIUrl":"https://doi.org/10.1039/D4NJ04193C","url":null,"abstract":"<p >Copper(<small>I</small>) and silver(<small>I</small>) complexes have garnered significant interest as photoluminescent and electroluminescent emitters. Developing efficiently luminescent copper(<small>I</small>) and silver(<small>I</small>) complexes relies on the rational design of ligands, based on a deep understanding of the relationships between structure, excited states, and photophysical properties. Herein, a copper(<small>I</small>) complex and a silver(<small>I</small>) complex, namely Cu(Ac-phen)XP·BF<small>₄</small> and Ag(Ac-phen)XP·BF<small>₄</small>, were synthesized based on a donor–acceptor–donor (D–A–D) type diimine ligand and a bisphosphine ligand. Cu(Ac-phen)XP·BF<small>₄</small> and Ag(Ac-phen)XP·BF<small>₄</small> in the solid state exhibit red and orange-yellow emission with photoluminescent quantum yields of 18% and 40%, and emission lifetimes of 1.2 μs and 7.8 μs, respectively. Theoretical and experimental investigations demonstrate that both complexes emit efficient thermally activated delayed fluorescence (TADF) from excited states dominated by intra-ligand charge transfer (ILCT) transitions. The ILCT emissive states are attributed to the stronger electron-donating ability of the A–D–A type ligand compared to the d<small>¹⁰</small> copper and silver centers. The distinct metal coordination effects of the copper and silver centers lead to different levels of LUMO stabilization in the diimine ligand, resulting in different emissions for the copper(<small>I</small>) and silver(<small>I</small>) complexes.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 3","pages":" 755-760"},"PeriodicalIF":2.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976209","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}

{"title":"Benzimidazole-based low-sensitivity and heat-resistant energetic materials: design and synthesis†","authors":"Ying Liang, Xian-Kun Hu, Zhang-Lei Yang, Miao-Miao Liu, Yao Zhang, Jin-Ting Wu, Jian-Guo Zhang, Ting-Xing Zhao, Shan-Hu Sun and Shu-Min Wang","doi":"10.1039/D4NJ04471A","DOIUrl":"https://doi.org/10.1039/D4NJ04471A","url":null,"abstract":"<p >Heat-resistant and low-sensitivity energetic materials are urgently needed in demanding environments, such as deep oil wells, space blasting, and hypersonic weapons. Herein, through the processes of substitution, reduction, cyclizati<em>o</em>n, nitration, and ammoniation, two nitro groups and two amino groups were successfully introduced into a benzimidazole framework to prepare a new heat-resistant energetic material, 4,6-diamino-5,7-dinitro-1<em>H</em>-benzo[<em>d</em>]imidazole (<strong>DADNBI</strong>). Single crystal X-ray diffraction was executed to verify the structure of the compound. Crystal <strong>DADNBI</strong> belongs to the <em>C</em>2/<em>c</em> space group and monoclinic crystal system. The thermal stability of <strong>DADNBI</strong> was analyzed through differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), and results showed that the decomposition temperature of <strong>DADNBI</strong> was 366 °C, which is higher than that of 2,4,6-trinitrotoluene (TNT) (<em>T</em><small>_d</small>: 295 °C), hexanitrostilbene (HNS) (<em>T</em><small>_d</small>: 318 °C), and 5,5′-bis(2,4,6-trinitrophenyl)-2,2′-bi(1,3,4-oxadiazole) (TKX-55) (<em>T</em><small>_d</small>: 335 °C) and comparable to that of 1,3,5-tritamino-2,4,6-trinitrobenzene (TATB) (<em>T</em><small>_d</small>: 360 °C). Non-isothermal thermal decomposition kinetics and Mayer bond pole calculations verified the excellent thermal stability of <strong>DADNBI</strong> from a theoretical perspective. The characteristic drop height (<em>h</em><small>_50%</small>) of <strong>DADNBI</strong> is 305 cm. All these parameters of <strong>DADNBI</strong> far exceed those of the reported 5,7-dinitro-1<em>H</em>-benzo[<em>d</em>]imidazole (DNBI). This work offers important guidelines from both theoretical and experimental perspectives for designing and synthesizing new insensitive heat-resistant energetic materials.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 1","pages":" 257-262"},"PeriodicalIF":2.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826060","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}

{"title":"Copper complex of phenylglycine-functionalized UiO-66-NH2: a chiral MOF catalyst for enantioselective Henry reaction†","authors":"Khadijeh Rasolinia, Hamid Arvinnezhad and Saadi Samadi","doi":"10.1039/D4NJ03149K","DOIUrl":"https://doi.org/10.1039/D4NJ03149K","url":null,"abstract":"<p >In this study, a Zr based MOF chiral catalyst was synthesized, characterized, and then examined in the enantioselective Henry reactions. The process involved the synthesis of <strong>UiO-66-NH<small>₂</small></strong>, followed by its functionalization with 2-chloroacetyl chloride. Subsequently, <small>L</small>-phenylglycine was immobilized on the functionalized MOF to prepare a chiral heterogeneous ligand. Finally, the prepared chiral ligand was complexed with Cu(CH<small>₃</small>CN)<small>₄</small>PF<small>₆</small> to obtain the chiral heterogeneous catalyst. All of the synthesized materials were characterized using various methods including FT-IR, XRD, SEM, EDX, elemental mapping, and BET/BJH analysis. Evaluation of the catalytic activity of the prepared chiral heterogeneous catalyst under different conditions demonstrated that the best results can be achieved under solvent free green conditions at room temperature, producing excellent yields and low to moderate enantioselectivities. The heterogeneous catalyst was recovered and reused easily, maintaining activity over three consecutive cycles.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 1","pages":" 213-222"},"PeriodicalIF":2.7,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826014","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}