Macromolecular Symposia最新文献_第8页

Polyaniline-Based Nanocomposites for Wastewater Treatment

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400148

Chithra A, Isha Arora, Seema Garg, Hema Bhandari, Suresh Sagadeven, Amrish Chandra

引用次数: 0

Bismuth-Based Materials for Supercapacitor Application

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400208

Babita Tripathi, Surajbhan Gujjar, M. Z. A. Yahya, I. M. Noor, Ram Chandra Singh

引用次数: 0

Synthesis, Characterization, and Study of Biological, Laser, Nanoscale, Cancer, and Molecular Docking Activity of Tetrazole Compounds Derived from 1,3,4-Oxadiazole

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400219

Maha Mahdi Saleh, Fawzi Hamid Juma

{"title":"Synthesis, Characterization, and Study of Biological, Laser, Nanoscale, Cancer, and Molecular Docking Activity of Tetrazole Compounds Derived from 1,3,4-Oxadiazole","authors":"Maha Mahdi Saleh, Fawzi Hamid Juma","doi":"10.1002/masy.202400219","DOIUrl":"https://doi.org/10.1002/masy.202400219","url":null,"abstract":"This study involves the synthesis of pentagonal rings of tetrazole derivatives through the reaction of one mole of hydrazide base derivatives with two moles of sodium azide. The validity of the compound structures is confirmed using physical and spectroscopic methods such as UV-Vis, FTIR, proton, and carbon NMR, as well as elemental analysis. Additionally, melting points and purity are determined, and reaction progress is monitored by thin-layer chromatography (TLC). Nanocompounds are prepared by synthesizing silver nanoparticles using fig leaf extract, followed by their addition to the prepared compounds. Characterization is conducted through X-ray diffraction (XRD), Scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The impact of some prepared compounds on the growth of two bacterial isolates, one Gram-negative (Escherichia coli) and the other Gram-positive (Staphylococcus aureus), is studied. Antibiotics amoxicillin, ampicillin, and ciprofloxacin are used as controls, and some of the prepared compounds show good inhibitory effectiveness against the tested bacteria. Moreover, a qualitative evaluation of antioxidant activity, assessed by the scavenging of free radicals using TLC, is performed to determine the ability of compounds (M8) to reduce oxidative stress. The prepared compound (M8) is tested for its ability to inhibit the growth of human breast cancer cells (MCF-7) outside the living organism. Molecular docking studies of some prepared compounds on two targets, breast cancer and E. coli bacteria, are conducted using MOE (2009). Energy minimization of the compounds is carried out to obtain the most stable conformation with the lowest energy barrier.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431580","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

Thermodynamic Calculations of Hydrogen Storage on Ultrasound-Assisted Synthesis of Boehmite–Graphene

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400241

Hadla A. Zaben, Tiba A. Zaben, Maysoon A. Hamad, Mustafa A. Alheety

{"title":"Thermodynamic Calculations of Hydrogen Storage on Ultrasound-Assisted Synthesis of Boehmite–Graphene","authors":"Hadla A. Zaben, Tiba A. Zaben, Maysoon A. Hamad, Mustafa A. Alheety","doi":"10.1002/masy.202400241","DOIUrl":"https://doi.org/10.1002/masy.202400241","url":null,"abstract":"This research include an industrial step, which is the synthesis of the inorganic–organic nanocomposite using ultrasound as a rapid and one-step method, which is done by mixing boehmite with graphene oxide and then reacting them with the help of ultrasound with a capacity of 750 watts and a time not exceeding 10 min. The resulted product are then reacted with hydrazine hydrate to give boehmite–graphene nanocomposite. The materials are characterized using XRD, which prove the presence of boehmite and graphene without any structural change, indicating the physical decoration between them. Furthermore, the TEM measurement proves the presence of a graphene sheet with a thickness of one sheet carrying on its surface nanoboehmite particles that are no larger than 30 nm. Moreover, the composite is used to store hydrogen at four different temperatures (77–273 K). It is observed that the composite has the ability to store approximately 5.9 wt% at 77 K, which deceases with the increase in temperature until it reaches its lowest levels at 273 K with a storage value of 0.6 wt%, noting that the study is done at a pressure of 90 bar. Moreover, the thermodynamic properties of the storage process are studied, which prove that the enthalpy value is equal to 0.101788 (KJ/mol H2), and the entropy value is 5.96878 (J/mol H2. K), indicating the physical bonding of hydrogen.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431635","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

Temperature-Dependent Structural, Optical, and Electrical Performance Assessment of Fabricated (Au, Al)/ZnO/p-Si Heterojunction Schottky Diodes

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400187

Manisha Rajoriya, Mohit Sahni, Munendra Singh, Sucheta Singh, Pallavi Gupta, M. Z. A. Yahya, I. M. Noor

{"title":"Temperature-Dependent Structural, Optical, and Electrical Performance Assessment of Fabricated (Au, Al)/ZnO/p-Si Heterojunction Schottky Diodes","authors":"Manisha Rajoriya, Mohit Sahni, Munendra Singh, Sucheta Singh, Pallavi Gupta, M. Z. A. Yahya, I. M. Noor","doi":"10.1002/masy.202400187","DOIUrl":"https://doi.org/10.1002/masy.202400187","url":null,"abstract":"This work incorporates the fabrication and characterization of highly transparent zinc oxide (ZnO) film deposited on p-type Si (100). The work also includes the temperature dependency of fabricated (Au, Al)/ZnO/p-Si-heterojunction Schottky diodes. This temperature analysis is done in terms of optical, structural, and electrical analysis. The fabrication of the proposed sample has been carried out using RF magnetron sputtering and then sintered at two different temperatures (100 °C and 300 °C). Structural properties of these films are analyzed and compared using XRD, SEM, and AFM. Further, this work explores the electrical properties of various types of Schottky junctions fabricated with gold and aluminum metal contacts on these thin films. With the increasing fabrication temperature, both the optical band gap as well as the ideality factor are found to be decreasing. The impact of temperature variation on the potential barrier of Schottky diodes and carrier concentration has also been studied. This work and device fabrication have applications in the field of analog circuits and electronics.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431664","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

Molecular Insights Into Adulteration Dynamics in Clarified Butterfat: An Image Based Approach 澄清牛油中掺假动态的分子洞察：基于图像的方法

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400131

Avinash Kaushal Awasthi, Pallavi Gupta, I. M. Noor

{"title":"Molecular Insights Into Adulteration Dynamics in Clarified Butterfat: An Image Based Approach","authors":"Avinash Kaushal Awasthi, Pallavi Gupta, I. M. Noor","doi":"10.1002/masy.202400131","DOIUrl":"https://doi.org/10.1002/masy.202400131","url":null,"abstract":"Clarified butterfat, commonly known as desi ghee, is one of the most important edible products of the dairy industry. There are many types of materials used to adulterate the clarified butterfat. This study presents the development of a protocol for the image acquisition of various controlled pure and adulterated samples of clarified butterfat. Further, its analysis is proposed using image processing tools for developing a model to identify the various adulteration levels in clarified butterfat (cow ghee) that is adulterated with vegetable fat. The processed images are analysed for pixel intensity, crystalline structures, yellowness, and skeleton factors to evaluate the purity of butterfat (ghee) and matched with impure samples of 10%, 20%, 30%, 40%, and 50% adulteration levels using discriminant analysis. The study delves into the effects of varying adulteration levels on the molecular characteristics of clarified butterfat, considering both intrinsic and extrinsic factors. Changes in crystalline values are accompanied by increasing levels of adulteration, attributed to shifts in triglyceride composition induced by the addition of hydrogenated vegetable fat. The selected parameters can be used as a substitute method at a standard temperature of 28–32 °C with benefits of ease, speed, accuracy, larger sample size for repeatability with an extent up to 90% of precision by critically following the developed protocol.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431291","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

Improved Dielectric Characteristics of PVA–BiFeO3–Polystyrene 2% Divinyl Benzene Composites 改进 PVA-BiFeO3-Polystyrene 2% Divinyl Benzene 复合材料的介电特性

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202300249

Pragya Dubey, Subhendu Chakroborty, Srikanta Moharana, Ritesh Jain, Tarun Yadav, Jitendra Malviya, Nibedita Nath, Arundhati Barik

引用次数: 0

Comparative Analysis of Solar Photovoltaic Modules: Roof-Mounted Versus Floating with Polystyrene Material-Based Floats 太阳能光伏组件的比较分析：屋顶安装与使用聚苯乙烯材料制成的浮筒进行漂浮的比较

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400057

Aradhana Shukla, Satish Kumar Yadav, Amit Misra, Adeeba Yaqub, Jyotsna Singh, Rajendra Bahadur Singh

{"title":"Comparative Analysis of Solar Photovoltaic Modules: Roof-Mounted Versus Floating with Polystyrene Material-Based Floats","authors":"Aradhana Shukla, Satish Kumar Yadav, Amit Misra, Adeeba Yaqub, Jyotsna Singh, Rajendra Bahadur Singh","doi":"10.1002/masy.202400057","DOIUrl":"https://doi.org/10.1002/masy.202400057","url":null,"abstract":"A novel method for generating energy known as floating photovoltaic technology, has gained significant attention due to its numerous advantages. Floating panels reduce water evaporation while simultaneously enhancing energy production. In this paper, it is compared that the performances of floating PV module and rooftop PV module on a sunny day in a composite climate. This study is an experimental analysis of the performance of 20 Wp of floating with a 20 Wp rooftop PV module. It is recorded weather parameters along with module output data for both the floating and rooftop setups. The experimental results show that the efficiency of the floating PV module is greater than that of the rooftop PV module by 0.68%. The floating PV module demonstrates a slightly lower average temperature of 49.23 °C compared to that of the rooftop PV module, which is 50.95 °C. Moreover, floating PV module has a marginal advantage in terms of power generation. The outcomes of this experiment suggest that the efficiency of the floating PV module is greater than that of the rooftop solar panel. This means that for the installation of floating PVs, there is no need for land, which gives them a unique identity.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431380","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

Analyzing Ionic Transport Properties of Starch/Glycerin-Sodium Phosphate Solid Polymer Electrolyte Utilizing Electrochemical Impedance Spectroscopy 利用电化学阻抗谱分析淀粉/甘油-磷酸钠固体聚合物电解质的离子传输特性

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202300220

Fatin Farhana Awang, Mohd Al Amin Muhamad Nor, Chan Kok Sheng, Mohd Faiz Hassan

{"title":"Analyzing Ionic Transport Properties of Starch/Glycerin-Sodium Phosphate Solid Polymer Electrolyte Utilizing Electrochemical Impedance Spectroscopy","authors":"Fatin Farhana Awang, Mohd Al Amin Muhamad Nor, Chan Kok Sheng, Mohd Faiz Hassan","doi":"10.1002/masy.202300220","DOIUrl":"https://doi.org/10.1002/masy.202300220","url":null,"abstract":"Thin films of solid polymer electrolytes are being fabricated using corn starch doped with glycerin/sodium phosphate and varying ratios of polymer and salt. These films are prepared through a dual-solvent technique. Glycerin is introduced into the solution mixture to enhance the elasticity of the polymer film, thereby increasing the flexibility of the thin membrane. The conductivity and electrical properties of these thin films are being analyzed to gain insights into the ion transport characteristics of the polymer electrolytes. At room temperature, the highest observed conductivity is 1.22 × 10−2 S cm−1, achieved in the 30 wt.% Na3PO4 salt-doped polymer electrolyte system. Upon evaluating the transport properties, it becomes evident that the ionic conductivity is predominantly influenced by the concentration of charge carriers, especially in high Na3PO4 content. As the salt content is further increased, the diffusion coefficient and mobility of charge carriers decrease.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431415","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

Thermo-Acoustical Studies On L-Leucine in Aqueous MgSO4 and MgCl2 Solution at T = 283.15K and 288.15K T = 283.15K 和 288.15K 时 MgSO4 和 MgCl2 水溶液中 L-亮氨酸的热声学研究

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400150

Neha S. Pathan, Urvashi P. Manik, Paritosh L. Mishra, Krishna Kumar Pandey, Garima Nagpal

{"title":"Thermo-Acoustical Studies On L-Leucine in Aqueous MgSO4 and MgCl2 Solution at T = 283.15K and 288.15K","authors":"Neha S. Pathan, Urvashi P. Manik, Paritosh L. Mishra, Krishna Kumar Pandey, Garima Nagpal","doi":"10.1002/masy.202400150","DOIUrl":"https://doi.org/10.1002/masy.202400150","url":null,"abstract":"We conducted an investigation on a 0.01 M solution of L-leucine in aqueous magnesium sulfate and magnesium chloride at temperatures of 283.15 K and 288.15 K. The study focused on measuring and analyzing various acoustic and thermodynamic parameters such as surface tension (σ), adiabatic compressibility(β), specific heat ratio (γ), molar volume (Vm), apparent molar volume (ϕv), Wada's constant(W), and Rao's constant(R). W e calculated all these from the experimental data used in the current study. Different thermodynamic parameters have been applied to examine solute-solvent and solute-solute interactions and the effects of magnesium chloride and magnesium sulphate salt on the hydration and electrostriction behaviour of l-leucine. The addition of salt considerably impacted the volumetric and acoustic behaviour of the investigated amino acids via ion-ion, ion-dipole, solute-solvent, and hydrogen bonding interactions. The solute-solvent interactions in these systems are considered when interpreting the results. It has been noted that these systems have potent solute interactions. The solute-solvent ratio also grows as the temperature rises. It has been noted that in aqueous-salt solutions, these amino acids serve as structure-makers. Overall findings indicate that L-leucine and magnesium sulphate have a more powerful molecular interaction than L-leucine and magnesium chloride.","PeriodicalId":18107,"journal":{"name":"Macromolecular Symposia","volume":"414 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431299","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