Main Group Chemistry最新文献_第10页

Characterization and optimization of ZnS thin film properties synthesis via chemical bath deposition method for solar cell buffer layer 化学浴沉积法合成太阳能电池缓冲层用ZnS薄膜性能的表征与优化

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-02-04 DOI: 10.3233/mgc-210127

Z. Ahmed, Tareq Rahman, K. Hussain, M. Khatun, M. Chowdhury, T. Faruqe, F. Toma, Y. Ahmed, M. Khan, M. M. Alam

{"title":"Characterization and optimization of ZnS thin film properties synthesis via chemical bath deposition method for solar cell buffer layer","authors":"Z. Ahmed, Tareq Rahman, K. Hussain, M. Khatun, M. Chowdhury, T. Faruqe, F. Toma, Y. Ahmed, M. Khan, M. M. Alam","doi":"10.3233/mgc-210127","DOIUrl":"https://doi.org/10.3233/mgc-210127","url":null,"abstract":"Zinc Sulphide is one of most studied semiconductor with wide band gap (3.5–3.9 eV) versatile material due to its physical and chemical properties. ZnS is a non-toxic material and a suitable candidate to be a buffer layer for heterojunction solar cells. In this study, Zinc Sulphide (ZnS) thin films were deposited by chemical bath deposition technique using Zinc Acetate Dihydrate [Zn (CH3COO)2. 2H2O] and Thiourea [CH4N2S]. The ZnS thin films samples were characterized by UV-Vis NIR Spectroscopy, X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDX), Fourier-Transform Infrared Spectroscopy (FTIR) and Thin-Film Measurement Instrument. FTIR spectra confirmed the presence of ZnS bond in the crystalline thin film. XRD data confirmed the cubic structure of the deposited thin film only when the amount of Thiourea was increased and the complexing agent Hydrazine Hydrate was replaced with Tri-Sodium Citrate. Crystallite size and strain were estimated using Debye-Scherrer model and Williamson-Hall model and lattice constant was estimated using Nelson-Riley plot. Otherwise, XRD showed the amorphous phase. UV-Vis data confirmed ZnS thin films as enough transmittive and it showed higher bandgap. Thin-Film Measurement Instrument was used to measure the thickness of the ZnS thin films. Synthesized ZnS thin films exhibited promising characteristics for using as the buffer layer of the heterojunction solar cells. Highlights • ZnS thin films were prepared successfully by simple, low cost and environment friendly chemical bath deposition method. • XRD measurement confirmed both Amorphous and Crystalline phase of ZnS thin films. • By changing the precursor only can be achieved crystalline phase from amorphous phase of ZnS thin film. • The amount of precursor and deposition conditions can be optimized to produce crystalline ZnS thin film.","PeriodicalId":18027,"journal":{"name":"Main Group Chemistry","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73838488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Chemical co-precipitation synthesis of manganese ferrite (MnFe2O4) nanoparticles as a magnetic adsorbent of lead 化学共沉淀法合成铁酸锰纳米颗粒作为铅的磁性吸附剂

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-02-03 DOI: 10.3233/mgc-210117

Shima Shahidizandi, H. Mohammadi-Manesh, M. M. Loghavi, M. Hakimi

引用次数: 1

Photosensitization of fucoxanthin-graphene complexes: A computational approach 岩藻黄素-石墨烯复合物的光敏性:一种计算方法

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-01-25 DOI: 10.3233/mgc-210188

Afsoon Saedi, Ali Mashinchian Moradi, S. Kimiagar, H. Ahmad panahi

引用次数: 4

Construction of manganese-based metal organic frameworks derived from aromatic dicarboxylic acids and application for the adsorption of iodine 芳香族二羧酸锰基金属有机骨架的构建及其在碘吸附中的应用

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-01-24 DOI: 10.3233/mgc-210178

Mingshan Sun, Ying Wang, F. Bai, Y. Xing

{"title":"Construction of manganese-based metal organic frameworks derived from aromatic dicarboxylic acids and application for the adsorption of iodine","authors":"Mingshan Sun, Ying Wang, F. Bai, Y. Xing","doi":"10.3233/mgc-210178","DOIUrl":"https://doi.org/10.3233/mgc-210178","url":null,"abstract":"In this work, we selected terephthalic acid or 2-amino-terephthalic acid as ligand, transition metal manganese salt as metal source under the solvothermal conditions to successfully construct two kinds of manganese-based metal-organic frameworks (Mn-MOFs): Mn3(BDC)3(H2O)2 (1) and Mn3(NH2-BDC)3(DMF)4 (2) (H2BDC = terephthalic acid; NH2-BDC = 2-amino terephthalic acid; DMF = N, N-dimethyl formamide). It was characterized by elemental analysis, IR spectrum, thermogravimetric analysis (TG), X-ray powder diffraction (PXRD) and UV-vis absorption spectrum. It was found that the packing structures of compounds 1 and 2 were constructed by the trinuclear Mn3O16 building block and exhibited different spatial structure: compound 1 was a three-dimensional structure, and 2 was a two-dimensional network structure. The iodine adsorption in cyclohexane solution properties of compounds 1 and 2 were investigated. Research results showed that the uncoordinated amino group in the structure of framework compounds has a great influence on the iodine adsorption capacity and compound 2 had good adsorption property and reusability.","PeriodicalId":18027,"journal":{"name":"Main Group Chemistry","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83792860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Alginate poly and oligosaccharide (AOS) from Sargassum sp. as immunostimulant in gnotobiotic artemia challenge tests and antibacterial diffusion disc assay against pathogenic Vibrio parahaemolyticus, V. vulnificus and V. harveyi 马尾藻藻酸盐聚寡糖(AOS)在抗致病性副溶血性弧菌、创伤弧菌和哈韦伊弧菌拮抗实验中的免疫刺激作用

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-01-24 DOI: 10.3233/mgc-210116

E. Yudiati, N. Azhar, M. J. Achmad, S. Sunaryo, A. Susanto, B. Yulianto, R. Alghazeer, W. Alansari, G. Shamlan

{"title":"Alginate poly and oligosaccharide (AOS) from Sargassum sp. as immunostimulant in gnotobiotic artemia challenge tests and antibacterial diffusion disc assay against pathogenic Vibrio parahaemolyticus, V. vulnificus and V. harveyi","authors":"E. Yudiati, N. Azhar, M. J. Achmad, S. Sunaryo, A. Susanto, B. Yulianto, R. Alghazeer, W. Alansari, G. Shamlan","doi":"10.3233/mgc-210116","DOIUrl":"https://doi.org/10.3233/mgc-210116","url":null,"abstract":"Alginate is a polysaccharide derived from Sargassum sp. and is a potent immunostimulant with antibacterial activity, including against Vibrio spp. This genus of bacteria is found in freshwater and marine environments and is a common infectious, pathogenic bacteria both for aquatic cultivans and humans. Here, we determined the ability of sodium alginate polysaccharides and oligosaccharides (AOS) to act as immunostimulants in Artemia challenge tests and antibacterial diffusion disc assays against Vibrio parahaemolyticus, V. vulnificus, and V. harveyi. The AOS was produced by thermal heating. Dry sodium alginates were weighed out from 4.21 to 6.47 grams with a yield varying from 21.05 to 32.35%. Alginate polysaccharides were challenged against V harveyi and showed 8 positive results. The highest inhibitor zone was 12.962±3.623 mm. Based on 18 tests, AOS showed 12 positive results, with the highest inhibitor zone being 10.250±0.09 mm. The encapsulated alginate against Vibrio parahaemolyticus, Vibrio harveyi, Vibrio vulnificus, and the non-challenged tests without any Vibrio spp. addition resulted in the best concentrations of 800 ppm (polysaccharide) and 600 ppm (oligosaccharide), respectively. The lower concentration of oligosaccharides alginate were more effective and has the potential to be superior as an antibacterial agent and immunestimulant, as opposed to alginate polysaccharide.","PeriodicalId":18027,"journal":{"name":"Main Group Chemistry","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76681226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

4-Amino modified derivatives of cytidine towards interactions with the methyltransferase enzyme 胞苷的氨基修饰衍生物与甲基转移酶的相互作用

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-01-24 DOI: 10.3233/mgc-210185

Parnia Abyar Ghamsari, M. Samadizadeh

{"title":"4-Amino modified derivatives of cytidine towards interactions with the methyltransferase enzyme","authors":"Parnia Abyar Ghamsari, M. Samadizadeh","doi":"10.3233/mgc-210185","DOIUrl":"https://doi.org/10.3233/mgc-210185","url":null,"abstract":"By the importance of exploring novel compounds for inhibiting the cancerous enzymes activities, this work was performed to recognize advantages of employing 4-amino modified derivatives of cytidine for participating in more efficient interactions with the methyltransferase (MTN) cancerous enzyme target. To this aim, four groups of modified models of cytidine were investigated in addition the original models to recognize the structural features and the corresponding activities. The 4-amino site of cytidine was functionalized by different carbon-based groups in linear and cyclic modes through a bridging peptide linkage. The models were optimized to reach the minimized energy structures by performing quantum chemical calculations and their interactions with the target were analyzed by performing molecular docking simulations. The obtained results of 4-amino modified derivatives of cytidine showed advantages of employing structural modifications to find structures with better molecular orbital based features. Formations of interacting complexes indicated that the additional of carbon-based groups helped to improve possibility of interactions between the substances in both of chemical and physical modes. As a remarkable achievement of this work, the model of cytidine with a phenyl group showed the best advantage of participating in interactions with the MTN target among all twenty five models of the investigated cytidine compounds.","PeriodicalId":18027,"journal":{"name":"Main Group Chemistry","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86463152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Detection of insecticide detoxification enzymes activities in Aedes aegypti mosquito, the vector of dengue fever in Saudi Arabia 沙特阿拉伯登革热病媒埃及伊蚊杀虫剂解毒酶活性检测

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-01-21 DOI: 10.3233/mgc-210184

Abdullah G. Algamdi, J. Mahyoub

{"title":"Detection of insecticide detoxification enzymes activities in Aedes aegypti mosquito, the vector of dengue fever in Saudi Arabia","authors":"Abdullah G. Algamdi, J. Mahyoub","doi":"10.3233/mgc-210184","DOIUrl":"https://doi.org/10.3233/mgc-210184","url":null,"abstract":"In this study, the sensitivity of Aedes aegypti mosquitoe larvae to four types of pesticides two phosphorous-based and two pyrethroid insecticides was investigated. The larvae revealed approximately 1.126-fold more susceptibility to Safrotin (LC50 = 0.127 ppm) than Fendure (LC50 = 0.143) in the case of phosphorous-based pesticides and approximately 1.265-fold more susceptibility to AlphaQuest (LC50 = 0.0347 ppm) than Klash (LC50 = 0.0439) in the case of pyrothroid insecticides. Comparison between groups revealed that AlphaQuest was more effective than Klash, Safrotin and Fendure by approximately 1.3, 3.6 and 4.1-fold, respectively. The presence of enzyme activities relevant to insecticide resistance was often evaluated using enzyme assays to detect the underlying resistance mechanisms that may not be detected using bioassays. In this study, the results revealed significant decrease in the activity of esterase, glutathione- S- transferase and acetylcholine esterase enzymes to varying degrees. There were significant increases in catalase and total glutathione activity in all treatments compared to the control. The study concluded that this variation in enzyme activities is due to the type and purity of the additive compound and the source and purity of the active ingredient. The study recommends using the catalase enzyme and total glutathione as a biomarker indication for pesticide synergistic intoxication in aquatic animals.","PeriodicalId":18027,"journal":{"name":"Main Group Chemistry","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72475734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 4

Synthesis of highly efficient selenium oxide hybridized g-C3N4 photocatalyst for NADH/NADPH regeneration to facilitate solar-to-chemical reaction 合成高效氧化硒杂化g-C3N4光催化剂促进NADH/NADPH再生

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-01-21 DOI: 10.3233/mgc-210189

Shesh Nath Yadav, B. Kumar, R. Yadav, Pooja S. Singh, S. K. Gupta, Satyam Singh, Chandani Singh, Surabhi Chaubey, A. Singh

{"title":"Synthesis of highly efficient selenium oxide hybridized g-C3N4 photocatalyst for NADH/NADPH regeneration to facilitate solar-to-chemical reaction","authors":"Shesh Nath Yadav, B. Kumar, R. Yadav, Pooja S. Singh, S. K. Gupta, Satyam Singh, Chandani Singh, Surabhi Chaubey, A. Singh","doi":"10.3233/mgc-210189","DOIUrl":"https://doi.org/10.3233/mgc-210189","url":null,"abstract":"An inexpensive graphitic carbon nitrite (g-C3N4) photocatalyst was hybridized with selenium oxide (SeO2) photocatalyst by a monolayer-dispersed technique. After hybridization of g-C3N4 with SeO2, the NADH/NADPH regeneration efficiency of SeO2 photocatalyst was enhanced under solar light illumination was observed. The photocatalytic activity of SeO2/g-C3N4 photocatalyst under solar light illumination was enhanced by 3-fold higher than g-C3N4 photocatalyst, the solar light photocatalytic activity was produced and the photo-decomposition of SeO2 photocatalyst was completely stifled after hybridized SeO2 photocatalyst by g-C3N4 photocatalyst. The improvement in performance and photo-decomposition inhibition under solar light illumination was persuaded by efficiency separation of photo-persuaded holes from SeO2 to the valence bond (V.B.)/highest occupied molecular orbital (HOMO) of g-C3N4 under solar light illumination, the electron jumped from the V.B. to the conduction band (C.B.)/lowest unoccupied molecular orbital (LUMO) of g-C3N4 could directly insert into the C.B. of SeO2 photocatalyst, synthesized SeO2/g-C3N4 photocatalyst is highly active for NADH/NADPH regeneration under solar light.","PeriodicalId":18027,"journal":{"name":"Main Group Chemistry","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84542892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 3

Double chelation of Iron through dimer formation of favipiravir: Density functional theory analysis 通过法匹拉韦二聚体形成的铁的双螯合:密度泛函理论分析

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-01-20 DOI: 10.3233/mgc-210182

M. J. Ansari, S. Jasim, A. Abed, Usama S. Altimari, G. Yasin, Wanich Suksatan, Khulood H. Oudaha, M. Kadhim, Abdullah Hasan Jabbar, Yasser Fakri Mustafa

{"title":"Double chelation of Iron through dimer formation of favipiravir: Density functional theory analysis","authors":"M. J. Ansari, S. Jasim, A. Abed, Usama S. Altimari, G. Yasin, Wanich Suksatan, Khulood H. Oudaha, M. Kadhim, Abdullah Hasan Jabbar, Yasser Fakri Mustafa","doi":"10.3233/mgc-210182","DOIUrl":"https://doi.org/10.3233/mgc-210182","url":null,"abstract":"This work was performed to examine an idea about full chelation of Iron (Fe) by well-known favipiravir (Fav) as a possible mechanism of action for medication of COVID-19 patients. To this aim, formations of Fe- mediated dimers of Fav were investigated by performing density functional theory (DFT) computations of electronic and structural features for singular and dimer models. The results indicated that the models of dimers were suitable for formation, in which two cis (D1) and trans (D2) models were obtained regarding the configurations of two Fav counterparts towards each other. Energy results indicated that formation of D1 was slightly more favorable than formation of D2. Molecular orbital features affirmed hypothesized interacting sites of Fav for Fe-mediated dimers formations, in which atomic charges and other molecular orbital related representations affirmed such achievements. Moreover, detection of such dimer formation was also possible by monitoring variations of molecular orbitals features. As a consequence, formations of Fe-mediated dimers of Fav could be achievable for possible removal of excess of Fe as a proposed mechanism of action for Fav in medication of COVID-19 patients.","PeriodicalId":18027,"journal":{"name":"Main Group Chemistry","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79088916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Study on imperatorin extracted from Angelica dahurica and its UV photocatalytic reaction with collagen 白芷中欧前胡素的提取及其与胶原蛋白的紫外光催化反应研究

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-01-20 DOI: 10.3233/mgc-210179

W. Jiang, Xiaohua Zhou, Ke Ni

{"title":"Study on imperatorin extracted from Angelica dahurica and its UV photocatalytic reaction with collagen","authors":"W. Jiang, Xiaohua Zhou, Ke Ni","doi":"10.3233/mgc-210179","DOIUrl":"https://doi.org/10.3233/mgc-210179","url":null,"abstract":"Soxhlet extraction method was used to extract imperatorin from Angelica dahurica, and the extraction ratio under different extraction condition was optimized to attain the best condition. Then, XAD-16 macroporous resin was selected as the optimal resin to boost the extraction ratio of imperatorin. Afterwards, the higher purity of imperatorin (96.84±0.2%) was separated by preparative HPLC system. Next, the photocatalytic reaction between the above imperatorin and collagen which the highest levels in skin was investigated using UV-vis spectroscopy, amino acid analysis and HPLC analysis. The results showed that imperatorin reacted with collagen only under ultraviolet light which caused the denaturation of collagen, and three new products were generated. The ultraviolet products were isolated by preparative HPLC system and separately detected by high-resolution mass spectrum. The possible UV photocatalytic reaction mechanism between imperatorin and collagen is that ultraviolet light induces the increase of the activity of the imperatorin to react with the tyrosine in the collagen, resulted in the denaturation of collagen and reestablish of the normal epidermal tissue in skin.","PeriodicalId":18027,"journal":{"name":"Main Group Chemistry","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76421364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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