Inorganic Chemistry eJournal最新文献

Crystal Structures of Acetylurea Complexes with Rare-Earth Bromides: Surprising Structural Changes 乙酰脲与稀土溴化物配合物的晶体结构:令人惊讶的结构变化

Inorganic Chemistry eJournal Pub Date : 2021-01-04 DOI: 10.2139/SSRN.3759649

E. Savinkina, Petr V. Akulinin, M. Grigoriev

引用次数: 0

Oxygen Vacancies in Zirconium Oxide as the Blue Luminescence Centres And Traps Responsible for Charge Transport: Part II - Films 氧化锆中的氧空位作为负责电荷传输的蓝色发光中心和陷阱:第二部分-薄膜

Inorganic Chemistry eJournal Pub Date : 2020-10-12 DOI: 10.2139/ssrn.3708728

D. Islamov, V. Gritsenko, T. Perevalov, V. Aliev, V. Nadolinny, A. Chin

引用次数: 1

Synthesis and Characterization of Fe III/Co III/Cu II Complexes with Schiff Base Liangd and Their Hybrid Proteins, Superoxide Dismutase (SOD) Activity and Asymmetric Catalytic Oxidation of Sulfides Fe III/Co III/Cu II配合物及其杂化蛋白的合成、表征、超氧化物歧化酶(SOD)活性及硫化物的不对称催化氧化

Inorganic Chemistry eJournal Pub Date : 2020-05-19 DOI: 10.2139/SSRN.3604916

Dan Mo, Jingnan Shi, D. Zhao, Yuzhen Zhang, Y. Guan, Yunjun Shen, Hedong Bian, Fuping Huang

{"title":"Synthesis and Characterization of Fe III/Co III/Cu II Complexes with Schiff Base Liangd and Their Hybrid Proteins, Superoxide Dismutase (SOD) Activity and Asymmetric Catalytic Oxidation of Sulfides","authors":"Dan Mo, Jingnan Shi, D. Zhao, Yuzhen Zhang, Y. Guan, Yunjun Shen, Hedong Bian, Fuping Huang","doi":"10.2139/SSRN.3604916","DOIUrl":"https://doi.org/10.2139/SSRN.3604916","url":null,"abstract":"Three transition metal complexes (M = Fe III , Co III , Cu II ) were synthesized by hydrothermal method from bis(2-hydroxy-1-naphthalene-formaldehyde) 3,4-diaminobenzoic acid (H 3 L). They were characterized by infrared spectroscopy, elemental analysis, mass spectrometry. Artificial enzymes were constructed by hybridizing bovine serum albumin (BSA) with the metal complexes and characterized by UV-Vis and MALDI-TOF-MS. The binding of metal complexes with BSA was studied by UV-Vis spectroscopy, Raman spectroscopy, fluorescence spectroscopy, and circular dichroism spectroscopy. The secondary structure changes of BSA caused by the binding of metal complexes were investigated. All the three metal complexes can cause the intrinsic fluorescence quenching of BSA, which is mainly static quenching. The addition of metal complexes changed the conformation of BSA and decreased the content of α–helix structure. The activity of SOD was measured by xanthine oxidase-NBT method. Antioxidant activity tests showed that all metal complexes exhibited certain SOD activity, which increased after the formation of hybrid proteins. Asymmetric oxidation of thioether catalyzed by artificial enzymes was studied. The optimum reaction conditions were obtained by optimizing the reaction conditions. Substrate universality experiments were carried out under the optimum reaction conditions, showing good activity and enantioselectivity, with enantioselectivity up to 81%.","PeriodicalId":399389,"journal":{"name":"Inorganic Chemistry eJournal","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127266666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A 'Fluid' Nickel-Based Ferrite as an Efficient Redox Material for Thermochemical Two-Step CO 2 Splitting 一种“流体”镍基铁氧体作为热化学两步分解二氧化碳的有效氧化还原材料

Inorganic Chemistry eJournal Pub Date : 2018-09-29 DOI: 10.2139/ssrn.3257350

Jincheng Huang, Yu Fu, Yonghui Zhao, Shenggang Li, Jun Zhang, Yuhan Sun

引用次数: 0

Preparation and Characterization of Nano-Sized Magnesium Ferrite Powders By a Starch-Gel Process and Corresponding Ceramics 淀粉-凝胶法制备纳米铁氧体镁粉体及其陶瓷表征

Inorganic Chemistry eJournal Pub Date : 2013-10-02 DOI: 10.2139/ssrn.3206736

R. Köferstein, T. Walther, D. Hesse, S. Ebbinghaus

{"title":"Preparation and Characterization of Nano-Sized Magnesium Ferrite Powders By a Starch-Gel Process and Corresponding Ceramics","authors":"R. Köferstein, T. Walther, D. Hesse, S. Ebbinghaus","doi":"10.2139/ssrn.3206736","DOIUrl":"https://doi.org/10.2139/ssrn.3206736","url":null,"abstract":"The synthesis and characterization of nano-sized MgFe2O4 by a starch-gel method is described herein. A phase-pure nano-sized MgFe2O4 powder (1a) was obtained after calcining a (MgFe) starch gel at 550 °C. The powder has a specific surface area of 60.6 m2/g and a crystallite size of 9 nm. TEM investigations reveal particles in the range of 7 to 15 nm. The activation energy of the crystallite growth process was calculated as 89 ± 14 kJ/mol. The shrinkage and sintering behaviour of resulting compacts were studied. UV−VIS investigations of the nano-sized powder 1a reveal an optical band gap of 2.38 eV, whereas calcination at 1100 °C (powder 1g) leads to a crystallite size of 129 nm and a band gap of 2.16 eV. Magnetization loops at 300 K and the temperature dependence of both the field-cooled (FC) and the zero-field-cooled (ZFC) agnetization indicate a superparamagnetic behaviour. The blocking temperature for powder 1a was determined as 140 K at a field of H = 500 Oe. We found different saturation magnetizations (Ms) depending on the calcination temperature. Calcination at 550 °C (1a) results in Ms = 20.0 emu/g which increases with calcination temperature to a maximum of 37.7 emu/g for powder 1e calcined at 900 °C. Ceramic bodies sintered between 1450 and 1600 °C exhibit Ms values of 25−28 emu/g. Magnetic investigations at 10 K on powders 1a−1g show hysteresis loops with coercivities up to 950 Oe, remanences to 10 emu/g and Ms values to 50.4 emu/g. Additionally, the nano-scaled powders show a shift of the hysteresis loops.","PeriodicalId":399389,"journal":{"name":"Inorganic Chemistry eJournal","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121314311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and Structure of a Cationic Ruthenium(II) Complex and It's Catalytic Activity Towards Transfer Hydrogenation of Aldehydes and Ketones 阳离子钌(II)配合物的合成、结构及其对醛酮转移加氢的催化活性

Inorganic Chemistry eJournal Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3639522

Bhattacharjee

引用次数: 0

Study of Ce-Doping on Optical, Morphological, Magnetic, Structural and Antibacterial Properties of NiCr 2O 4 Ceramics ce掺杂对nicr2o4陶瓷光学、形貌、磁性、结构及抗菌性能的影响

Inorganic Chemistry eJournal Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3828104

C. Ragupathia, V. Geetha, S. Narayanan, P. Tamizhdurai, Mani Govindasamy, Z. Alothman, M. Al-Anazy

引用次数: 0

Synthesis, Characterization and Luminescence Properties of Pr3+, Nd3+, Eu3+ and Gd3+ Complexes with Curcumin Pyrazole 姜黄素吡唑Pr3+、Nd3+、Eu3+和Gd3+配合物的合成、表征和发光性能

Inorganic Chemistry eJournal Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3589132

Ruokuosenuo Zatsu, M. Prabhakar, M. Devi

引用次数: 0

Synthesis, Characterization and Biological Studies of Nickel ( Ii) and Zinc ( Ii) Complexes with Mono - and Di - Bromo Substituted Schiff Base Ligands 单溴和二溴取代席夫碱配合物镍(Ii)和锌(Ii)的合成、表征和生物学研究

Inorganic Chemistry eJournal Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3698599

Bussaba Pinchaipat, Teerawat Khudkham, S. Wongsuwan, Ratanon Chotima, K. Chainok, T. Pila

{"title":"Synthesis, Characterization and Biological Studies of Nickel ( Ii) and Zinc ( Ii) Complexes with Mono - and Di - Bromo Substituted Schiff Base Ligands","authors":"Bussaba Pinchaipat, Teerawat Khudkham, S. Wongsuwan, Ratanon Chotima, K. Chainok, T. Pila","doi":"10.2139/ssrn.3698599","DOIUrl":"https://doi.org/10.2139/ssrn.3698599","url":null,"abstract":"Transition metal complexes of nickel(II) and zinc(II) with 5-bromo- N -(8-quinolyl)salicylaldimine (HqsalBr, HL 1 ) and 3,5-dibromo- N -(8-quinolyl)salicylaldimine (HqsalBr 2 , HL 2 ) have been synthesized and successfully characterized using several techniques: IR, 1 H-NMR, mass spectrometry and thermogravimetric analysis (TGA). The molecular structures of nickel(II) and zinc(II) complexes with HL 2 were determined by single crystal X-Ray crystallography. Ligands HL 1 and HL 2 both act as a tridentate ligand and coordinate to metal ion center via deprotonated hydroxyl oxygen atom, nitrogen of azomethine functional group and nitrogen of quinoline substituent. The interaction of these complexes with DNA was investigated using calf thymus DNA (CT-DNA) in which the studies by electronic absorption and luminescence titrations reveal that DNA binding mode of the complexes is intercalation. All the synthesized complexes provide great values of binding constant (K b ) and these results are consistent with the quenching capability defined by quenching constant values (K q ). Amongst the synthesized complexes, zinc(II) with ligand HL 2 complex, [Zn(qsalBr) 2 ], exhibits the most superior ability in the interaction with CT-DNA and the verification mode of binding by the competitive reaction with ethidium bromide (EB) also indicates the strongest intercalation by such complex. Additionally, ligands and complexes were also examined in anti-lung cancer activity against A549 cell line and compared with standard compounds, Etoposide and Cisplatin.","PeriodicalId":399389,"journal":{"name":"Inorganic Chemistry eJournal","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125510986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0