Dalton Transactions最新文献

Synthesis, Cytotoxicities, Structural Properties and Comparison of Dihalogenosubstituted-thiosemicarbazone ligands and Mixed-Ligand Ni(II) Complexes 二卤代-硫代氨基甲酸配体和混合配体 Ni(II) 配合物的合成、细胞毒性、结构特性及比较

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-18 DOI: 10.1039/d4dt02774d

Elif AVCU ALTIPARMAK, Güneş ÖZEN EROĞLU, Namık Özdemir, Serap Erdem Kuruca, Tulay Bal-Demirci

{"title":"Synthesis, Cytotoxicities, Structural Properties and Comparison of Dihalogenosubstituted-thiosemicarbazone ligands and Mixed-Ligand Ni(II) Complexes","authors":"Elif AVCU ALTIPARMAK, Güneş ÖZEN EROĞLU, Namık Özdemir, Serap Erdem Kuruca, Tulay Bal-Demirci","doi":"10.1039/d4dt02774d","DOIUrl":"https://doi.org/10.1039/d4dt02774d","url":null,"abstract":"Three novel mixed-ligand Ni(II) complexes were synthesized from 3,5-dihalogenosalicyladehyde-S-methyl isothiosemicarbazone ligand (3,5-dichloro for Complex I, 3,5-dibromo for Complex II, and 3,5-diiodo for Complex III) and diethanolamine. The synthesized compounds were characterized by elemental analysis, FT-IR, UV-Vis and 1H-NMR spectroscopies. Solid-state structures of Complex I and Complex II have been determined by single-crystal X-ray diffraction technique. Both the complexes were found to have distorted square planar geometry, with coordination of azomethine nitrogen, phenolate oxygen, terminal amine of thiosemicarbazone ligand and amine nitrogen of diethanolamine. The cytotoxic effects of the ligands and the complexes were evaluated against two different types of cancer cells (THP-1 human leukaemia monocytic cell line and MDA-MB-231 aggressive breast cancer cell line) and healthy cell (HUVEC Human umbilical vein endothelial cell line) by using MTT method. The findings demonstrated that the chloro-derivatives exhibited better efficacy compared to cisplatin in targeting the monocytic leukemia cell line while displaying reduced toxicity towards healthy cells.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"37 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665337","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

Bifunctional bimetallic Zeolitic imidazolate frameworks with nanoflower structure for sodium-ion storage and non-enzymatic glucose sensing 用于钠离子存储和非酶葡萄糖传感的具有纳米花结构的双功能双金属唑基咪唑啉框架

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-18 DOI: 10.1039/d4dt02779e

Jingjing Liu, Yu Shi, Jianhua Xu, Yajie Yang

引用次数: 0

Fabrication of Oxygen-Vacancy Abundant NiAl-Layered Double Hydroxides for Ultrahigh Capacity Supercapacitors 制备用于超高容量超级电容器的富氧空位镍铝层双氢氧化物

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-18 DOI: 10.1039/d4dt02351j

Ziyu Wang, Yifan Song, Ruiqi Li, Risheng Li, Run-Ping Jia, Kunliang Nie, Xiaowei Xu, Lin Lin, Haijiao Xie

{"title":"Fabrication of Oxygen-Vacancy Abundant NiAl-Layered Double Hydroxides for Ultrahigh Capacity Supercapacitors","authors":"Ziyu Wang, Yifan Song, Ruiqi Li, Risheng Li, Run-Ping Jia, Kunliang Nie, Xiaowei Xu, Lin Lin, Haijiao Xie","doi":"10.1039/d4dt02351j","DOIUrl":"https://doi.org/10.1039/d4dt02351j","url":null,"abstract":"The manipulation of oxygen vacancies is regarded as a viable approach to enhance the electrochemical properties of electrode materials. Herein, the NiAl-LDH nanosheets with rich oxygen vacancies were successfully synthesized on the surface of nickel foam via a conventiaonal hydrothemal and chemical reduction strategy. The oxygen vacancies were introduced and modulated via NaBH4 treatment, significantly enhancing the electrochemical properties. The oxygen-vacancy abundant NiAl-LDH electrode materials show a high capacitance of 4028 F cm-2 at the current density of 2 mA cm-2 and obtain a high capacity retention of 3000 F cm-2 even at a current density of up to 20 mA cm-2. In addition, the symmetric SC device achieves a notable energy density of 71.3 Wh kg-1 while operating at a power density of 2400 W kg-1. The empirical and theoretical findings demonstrate that the incorporation of oxygen vacancy significantly contributes to the improvement of the electrochemical characteristics of LDH electrode materials. The samples discussed in this work have the potential to serve as advanced electrode materials for supercapacitors in high-capacity energy storage devices.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"51 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665572","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

Photophysical properties of three-coordinate heteroleptic Cu(I) β-diketiminate triarylphosphine complexes. 三配位异极性 Cu(I) β-二乙叉三芳基膦配合物的光物理特性。

IF 3.5 3区化学

Dalton Transactions Pub Date : 2024-11-18 DOI: 10.1039/d4dt02681k

Ashish Kumar, Dooyoung Kim, Giao Nguyen, Chenggang Jiang, Soumi Chakraborty, Thomas S Teets

{"title":"Photophysical properties of three-coordinate heteroleptic Cu(I) β-diketiminate triarylphosphine complexes.","authors":"Ashish Kumar, Dooyoung Kim, Giao Nguyen, Chenggang Jiang, Soumi Chakraborty, Thomas S Teets","doi":"10.1039/d4dt02681k","DOIUrl":"https://doi.org/10.1039/d4dt02681k","url":null,"abstract":"A series of heteroleptic copper(I) β-diketiminate triarylphosphine complexes is reported, having the general formula Cu(R1NacNacR2)(PPhX3), where R1NacNacR2 is a substituted β-diketiminate and PPhX3 is a triphenylphosphine derivative. A total of five different R1NacNacR2 ligands and three different triarylphosphines are used to assemble the nine complexes. The syntheses, X-ray crystal structures, cyclic voltammograms, and UV-vis absorption spectra of all compounds are described. Whereas most of the compounds are weakly luminescent or only luminesce at 77 K, the four complexes with the more sterically encumbered β-diketiminate ligands, with methyl or isopropyl substituents at the 2- and 6-positions of the N-phenyl rings, exhibit weak room-temperature photoluminescence with peaks between 519 and 566 nm and long excited-state lifetimes in the range of 15-70 μs. The sterically encumbering substituents in this subset have subtle effects on the UV-vis absorption maximum, which red shifts slightly as the steric bulk increases, as well as significant effects on the photoluminescence lifetime, which is observed to increase as the steric bulk is augmented. Substituents on the triarylphosphine also influence the excited-state dynamics in the bulky complexes, with the more electron-rich tris(4-methoxyphenyl)phosphine (PPhOMe3) giving longer-excited-state lifetimes compared to triphenylphosphine (PPh3) when the same R1NacNacR2 ligand is used.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646098","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

Bright and Persistent Green Emitting MgGa2O4:Mn2+ for Phosphor Converted White Light Emitting Diodes 用于荧光粉转换白光发光二极管的明亮持久的绿色发光 MgGa2O4:Mn2+

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-18 DOI: 10.1039/d4dt02960g

Reshmi Thekke Parayil, Santosh Kumar Gupta, Malini Abraham, Deepak Tyagi, Subrata Das, Mohit Tyagi, Narendra Singh Rawat, Manoj Mohapatra

{"title":"Bright and Persistent Green Emitting MgGa2O4:Mn2+ for Phosphor Converted White Light Emitting Diodes","authors":"Reshmi Thekke Parayil, Santosh Kumar Gupta, Malini Abraham, Deepak Tyagi, Subrata Das, Mohit Tyagi, Narendra Singh Rawat, Manoj Mohapatra","doi":"10.1039/d4dt02960g","DOIUrl":"https://doi.org/10.1039/d4dt02960g","url":null,"abstract":"Narrow band green emitting phosphors have got widespread attention due to their application in white light emitting diodes (WLEDs) backlight displays. The commercial backlight displays are having a broad band green phosphor which limits their performance. In this work, bright, narrow and thermally stable green emitting MgGa2O4:Mn2+ (MGO-Mn) has been synthesized Time-resolved emission spectroscopy suggested that Mn2+ ions are distributed at both Mg2+ and Ga3+ sites in MGO spinel which resulted in high internal quantum efficiency of 63%. The colour purity of the MGO-Mn (76.4%) superseded that of commercial green phosphor β-SiAlON:Eu2+ (59.12%). Doping induced creation of oxygen vacancy impart MGO-Mn with excellent persistent luminescence with time duration of more than 900 sec on 1 min charging with 270 nm UV light and persistence radioluminescence of more than 6000 sec when charged with X-rays for 1 min. Finally, tunable white LEDs (cool and neutral white LED) are fabricated by combining the RGB mixture of the green phosphor with commercial red and blue phosphor along with a 280 nm UV LED chip. This work also provides importance of different annealing atmosphere on the photoluminescence and persistence luminescence of the MGO-Mn phosphor.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"72 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665338","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

Syntheses and properties of energetic cyclo-pentazolate cocrystals 高能环五唑酯共晶体的合成与特性

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-18 DOI: 10.1039/d4dt02727b

Fanle Meng, Zihong Ye, Hongwei Zhu, Lianghe Sun, Ming Lu, Yuangang Xu

{"title":"Syntheses and properties of energetic cyclo-pentazolate cocrystals","authors":"Fanle Meng, Zihong Ye, Hongwei Zhu, Lianghe Sun, Ming Lu, Yuangang Xu","doi":"10.1039/d4dt02727b","DOIUrl":"https://doi.org/10.1039/d4dt02727b","url":null,"abstract":"As a new type of polynitrogen species that is stable at room temperature, pentazolate anion (cyclo-N5−) has attracted much attention in the field of high-energy-density materials, but its energy and stability are unbalanced. Cocrystallisation can balance their properties to some extent by forming new chemical compositions from existing cyclo-N5− compounds through non-covalent interactions. This article reviews the research progress of cyclo-N5− cocrystals in recent years, including synthetic methods, cocrystals of metal-N5− compounds, and cocrystals of nonmetallic pentazolate salts. The cocrystals of metal-N5− compounds mainly includes metal-N5− solvates, cocrystals composed of metal-N5− compounds and amines/MSM, and metal containing composite salts; The cocrystals of nonmetallic pentazolate salts includes cocrystals composed of cyclo-N5− salts and solvents, cocrystals composed of cyclo-N5− salts and N-heterocyclic molecules, and non-metallic composite salts. The fascinating crystal structures (in some cases topological structures), stable forms, and physicochemical properties of representative cocrystals were highlighted. In addition, the future directions that need to be focused on in this field were pointed out, including the development of more preparation methods, especially those suitable for scaling up; higher precision calculation or testing of enthalpy of formation; improvement of their thermal stabilities; creation cocrystals of cyclo-N5− salts and high-density, high oxygen balance, high-energy oxidizer; and exploration of formation mechanism.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"225 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665342","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

Chromium Catalyzed Sustainable C-C and C-N Bond Formation: C-Alkylation and Friedländer Quinoline Synthesis Using Alcohols 铬催化的可持续 C-C 和 C-N 键形成：使用醇进行 C-烷基化和 Friedländer 喹啉合成

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-18 DOI: 10.1039/d4dt01481b

Vaishnavi Atreya, Sachin Jalwal, Subrata Chakraborty

引用次数: 0

Highly efficient CO2 capture and chemical fixation of a microporous (3, 36)-connected txt-type Cu(II)-MOF with multifunctional sites 具有多功能位点的微孔 (3, 36) 连接 txt 型 Cu(II)-MOF 的高效二氧化碳捕获和化学固定技术

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-16 DOI: 10.1039/d4dt01531b

Wenyu Dong, Zhaoxu Wang, Cai Zuxian, Deng Yiqiang, Guanyu Wang, Baishu Zheng

引用次数: 0

Neutral nickel complexes with tetradentate N-heterocyclic carbene amidate ligands for electrocatalytic hydrogen evolution 具有四价 N-杂环碳烯酰胺配体的中性镍络合物用于电催化氢进化

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-15 DOI: 10.1039/d4dt02746a

Si Si, Wenxun Song, Jie Chen, Weimin Zhang, Wenhua Ji, Wonwoo Nam, Bin Wang

引用次数: 0

Feasibility of controlled nitric oxide generation via ascorbate induced chemical reduction of nitrite ions. 通过抗坏血酸诱导亚硝酸根离子的化学还原来控制一氧化氮生成的可行性。

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-15 DOI: 10.1039/d4dt01980f

Hannah Naldrett, Csilla Fekete, Robert Bartlett, Zoltán Benkő, Steven Schwendeman, Gergely Lautner

{"title":"Feasibility of controlled nitric oxide generation via ascorbate induced chemical reduction of nitrite ions.","authors":"Hannah Naldrett, Csilla Fekete, Robert Bartlett, Zoltán Benkő, Steven Schwendeman, Gergely Lautner","doi":"10.1039/d4dt01980f","DOIUrl":"https://doi.org/10.1039/d4dt01980f","url":null,"abstract":"Inhaled nitric oxide (iNO) is a lifesaving, FDA-approved drug to improve oxygenation in persistent pulmonary hypertension of the newborn. iNO also has many other applications in lung diseases owing to its vasodilatory and antimicrobial effects. However, its wider therapeutic application is often prohibited by the high cost and logistical barriers of traditional NO/N2 gas tanks. Development of low-cost portable and tankless nitric oxide (NO) generators is a critical need to advance iNO therapy. Here, we describe the feasibility of NO generation by the controlled reduction of nitrite (NO2-) ions. This was accomplished by using ascorbate to reduce NO2- ions mediated by a copper(I/II) redox pair complexed by an azo-crown ether ligand ([Cu(II)L]2+/[Cu(I)L]+) in the solution phase. We found that oxalate, a decomposition product of ascorbate, interferes with the NO generation from the copper-ligand complex. This interference was mitigated, and the reaction was further optimized. NO generation through this method was found to be highly controllable via its proportionality to the flow rate of nitrite injected into a reaction chamber containing the reducing components. Hence, this simple approach adds to the current collection of innovative methods under development to obviate the use of NO tanks for iNO delivery.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"27 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637815","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