Macromolecular Symposia最新文献_第9页

Formation of Zeolitic Imidazolate Frameworks-8 (ZIF-8) Using Microwave Assisted Hydrothermal Technique 利用微波辅助水热技术形成沸石咪唑酸框架-8 (ZIF-8)

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400066

Shantidevi Dhanasegaran, Yiin Jian Low, Kieng Hang Chin, Nurul Huda Osman, Mazliana Ahmad Kamarudin, Yap Wing Fen, Ikhwan Syafiq Mohd Noor, Mohd Hafizuddin Ab Ghani, Han Kee Lee, Sarva Mangala Praveena, Toto Sudiro, Zainal Abidin Talib, Josephine Ying Chyi Liew

{"title":"Formation of Zeolitic Imidazolate Frameworks-8 (ZIF-8) Using Microwave Assisted Hydrothermal Technique","authors":"Shantidevi Dhanasegaran, Yiin Jian Low, Kieng Hang Chin, Nurul Huda Osman, Mazliana Ahmad Kamarudin, Yap Wing Fen, Ikhwan Syafiq Mohd Noor, Mohd Hafizuddin Ab Ghani, Han Kee Lee, Sarva Mangala Praveena, Toto Sudiro, Zainal Abidin Talib, Josephine Ying Chyi Liew","doi":"10.1002/masy.202400066","DOIUrl":"https://doi.org/10.1002/masy.202400066","url":null,"abstract":"Zeolitic Imidazolate Frameworks-8 (ZIF-8) have emerged as a promising class of porous Metal-Organic Framework materials with a wide range of applications due to their tunable characteristics. This study presents the synthesis of ZIF-8 using the microwave-assisted hydrothermal method in an aqueous solution to investigate the efficiency and characteristics of ZIF-8. The synthesis process involves a 15 min microwave irradiation at 180 °C with a mixture of zinc nitrate solution with 2-methyl imidazole in deionized water with triethylamine. The rapid synthesis yields pure ZIF-8 crystals, as validated by X-ray diffraction, energy-dispersive X-ray spectroscopy, and Fourier-Transform Infrared spectroscopy. The formation of ZIF-8 displays two distinct crystal shapes, with an average size of 0.510 µm, a direct band gap of 4.94 eV as well a BET surface area of 1652.06 m2 g−1. The high-quality ZIF-8 produced is ideal for catalysis, gas separation, and other applications, suitable for commercial-scale production.","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":"143431302","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, Characterization, and Brine Shrimp (Artemia salina) Toxicity Evaluation of Nanocomposites Carrier Phytic Acid/Chitosan/Magnetic Iron Oxide Nanoparticles 载体植酸/壳聚糖/磁性氧化铁纳米颗粒纳米复合材料的合成、表征和盐水虾（Artemia salina）毒性评估

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400237

Monica Namizie Asey, Che Azurahanim Che Abdullah, Mohamed Abdelmonem, Norhaizan Mohd Esa, Mohd Basyaruddin Abdul Rahman

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Concentration and Temperature Level Influenced the Optical Properties of Citrus Peel-Based Edible Film 浓度和温度水平影响柑橘皮食用薄膜的光学特性

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202300218

Gracella Kusuma, Vincensius Marcellino, Ata Aditya Wardana, R. Haryo Bimo Setiarto

引用次数: 0

Fiberglass Interwoven Substrate Laminated Penta-Band Microstrip Antenna

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400162

Yamiko Daniel Banda, Anupam Kumar Yadav, Sandeep Kumar Singh, Tripurari Saran, Serguei V. Savilov, M.Z.A. Yahya

引用次数: 0

Polymers as Sensing Layers in MEMS Biosensors for Molecular Diagnosis

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400113

Arpana Niranjan, Pallavi Gupta, Manisha Rajoria, I. M. Noor

{"title":"Polymers as Sensing Layers in MEMS Biosensors for Molecular Diagnosis","authors":"Arpana Niranjan, Pallavi Gupta, Manisha Rajoria, I. M. Noor","doi":"10.1002/masy.202400113","DOIUrl":"https://doi.org/10.1002/masy.202400113","url":null,"abstract":"Polymers have been used significantly in MEMS (micro-electro-mechanical systems) biosensors as substrates, sensor materials, packaging, surface encapsulation, and transducer elements. The sensing layer is a component that interacts with the target molecule. The choice of material for the sensing layer affects the sensitivity of the sensor. This research explores four commonly used polymers (polydimethylsiloxane (PDMS), nylon, poly methyl methacrylate) (PMMA), and polyethylene) as a sensor layer for bio-recognition in MEMS biosensors. The study is simulation-based. Two models, namely, a simple micro-cantilever beam and piezoelectric cantilever MEMS, are regarded in the paper. Different properties, such as stress and displacements, are studied, as well as voltage, in the case of the piezoelectric model. The comparative study contributes to understanding how different polymer materials and readout methods impact the choice of material for the sensing layer for MEMS biosensors. Results show that for applications using displacement measurement for further analysis, a simple cantilever is more suitable. The PED model has low displacement sensitivity but is an excellent choice when electric output is required. PDMA shows the best results among the materials used for comparative analysis. The final choice of materials depends on the specific application; PDMA provides flexibility and ease of fabrication, whereas PMMA is more suitable for applications requiring rigidity and chemical resistance. PDMA has 1.63 times more voltage sensitivity than PMMA. Furthermore benefits and challenges of using polymer as a sensing layer are also discussed.","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":"143431289","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

Biochemical and Molecular Characterization of Soil-Isolated Exoelectrogens and Evaluation of Their Electrochemical Properties via Single-Chambered Mediator-Free Microbial Fuel Cell

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400133

Parvaiz Ahmad Dar, Wan Zaireen Nisa Yahya, Azmat Ali Khan, Amit Kumar, Sharad Agrawal

{"title":"Biochemical and Molecular Characterization of Soil-Isolated Exoelectrogens and Evaluation of Their Electrochemical Properties via Single-Chambered Mediator-Free Microbial Fuel Cell","authors":"Parvaiz Ahmad Dar, Wan Zaireen Nisa Yahya, Azmat Ali Khan, Amit Kumar, Sharad Agrawal","doi":"10.1002/masy.202400133","DOIUrl":"https://doi.org/10.1002/masy.202400133","url":null,"abstract":"Microbial fuel cells are utilized in electromicrobiology for the purpose of cleaning wastewater and producing electricity. Anaerobically, MFCs use microbial catalysis in the anodic compartment to transform the chemical energy stored in organic and inorganic molecular bonds. Using the soil sample, four exoelectrogens are isolated. Each of the four single-chambered mediator-less microbial fuel cell design are used to inject the extracted soil exoelectrogens. A nutritional medium is used to operate the reactors in batches of 15 days. The exoelectrogen ISO4 (Bacillus amyloliquefaciens strain NSB4), followed by ISO3 (cereus strain BXC6), ISO2 (Bacillus sp. (in: Bacteria) strain 4N), and ISO1 (Staphylococcus argenteus strain D7) achieve the best growth rates. On average, data on energy generation shows that MFCs with ISO4 have the maximum voltage and power density at 1024 mV external resistance (1 kΩ), followed by ISO3 at 609 mV, ISO2 at 560 mV, and ISO1 at 487 mV. Power densities of isolates are recorded as: 41.281 mW/m2, 29.241, 12.723, and 3.552 mW/m2 for ISO4, ISO3, ISO2, and ISO1, respectively. The research finds that the energy output of MFC reactors is affected by the exoelectrogen substrates. Cyclic voltammetry (CV) experiment demonstrates that exoelectrogens directly transport electrons to the anode surface via cytochromes and other substances associated with the cell membrane. It has been previously difficult to produce power from pure isolates, but new research reveals that this is no longer an issue. Pure cultures of exolectrogens use to generate current also show a broad substrate utilization spectrum, in line with previous studies.","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":"143431304","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

Waste Material Management with a Coxian Arrival and First Exceptional Service Queueing Model

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400197

Rachna Khurana, Manju Sharma, Vinay Kumar Jadon, Amit Sharma, Khursheed Alam

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Eco-Friendly Synthesis and Characterization of Iron Oxide (α-Fe2O3) Nanoparticles Using Macromolecules from Pomegranate Peel Extract

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400231

Rabah N. Hasoon, Ahmed Najem Abd, Abdulwahhab H. Majeed

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Extraction Design of Flavonoids From Rosemary Plants for the Treatment of Acute Myocardial Infarction in Rats

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400225

Suzan Jumaa Harem, Asmaa Hashim Shaker

{"title":"Extraction Design of Flavonoids From Rosemary Plants for the Treatment of Acute Myocardial Infarction in Rats","authors":"Suzan Jumaa Harem, Asmaa Hashim Shaker","doi":"10.1002/masy.202400225","DOIUrl":"https://doi.org/10.1002/masy.202400225","url":null,"abstract":"This research entails a comprehensive assessment involving the measurement of prolyl glycosidase levels and calcium concentrations within a cohort of rats, which are subjected to induce myocardial infarction through subperitoneal injection of physiological solutions following an 18-h fasting period. The experimental rats are meticulously partitioned into five distinct groups to facilitate comparative analysis. The initial group serves as the healthy control, providing a baseline reference, while the fifth group is administered the pharmaceutical agent simvastatin. The intermediary groups are administered varying concentrations of flavonoids, specifically extracted from the rosemary plant utilizing advanced high-performance liquid chromatography (HPLC) technology. This study's design is carefully constructed to discern the impact of these interventions on prolyl glycosidase levels and calcium concentrations in the context of induced myocardial infarction. The administered substances, particularly simvastatin and the varied concentrations of rosemary-derived flavonoids, are strategically chosen to elucidate their potential influences on the measured biochemical parameters. The utilization of advanced HPLC technology for the extraction of flavonoids from rosemary ensures precise and controlled administration of these compounds to the experimental groups. This research design allows for a nuanced exploration of the effects of simvastatin and rosemary-derived flavonoids on prolyl glycosidase levels and calcium concentrations in the context of induced myocardial infarction. The delineation of the impact of these interventions on the measured biochemical markers contributes to a deeper understanding of potential therapeutic implications, paving the way for further investigations and potentially innovative interventions in cardiovascular health.","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":"143431593","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}

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Synthesis, Characterization, and Computational Studies of Organoselenium Compounds for Bioactivity Assessment Against Pancreatic Ductal Adenocarcinoma

Macromolecular Symposia Pub Date : 2025-02-17 DOI: 10.1002/masy.202400177

Bhaskar Banerjee, Bobby Solanki, Rajaneesh Kumar Verma, Nidhi Jain, Tarun Yadav, Mustafa A. Alheetyc, M. Z. A. Yahya, Munendra Singh, Vinay Kumar Verma, Ram Chandra Singh

{"title":"Synthesis, Characterization, and Computational Studies of Organoselenium Compounds for Bioactivity Assessment Against Pancreatic Ductal Adenocarcinoma","authors":"Bhaskar Banerjee, Bobby Solanki, Rajaneesh Kumar Verma, Nidhi Jain, Tarun Yadav, Mustafa A. Alheetyc, M. Z. A. Yahya, Munendra Singh, Vinay Kumar Verma, Ram Chandra Singh","doi":"10.1002/masy.202400177","DOIUrl":"https://doi.org/10.1002/masy.202400177","url":null,"abstract":"In the present research article, two small organoselenium molecules, 2-(phenylselanyl)ethanamine, L1H and 2-(phenylselanyl)propanamine, L2H, have been synthesized via high yield synthetic route and characterized using elemental, UV–vis, FTIR, (1H and 77Se) NMR, and mass spectrometry along with computational investigation, confirming selenium integration. Density functional theory (DFT) study elucidates the optoelectronic properties and structures of L1H and L2H, providing insights into stability and reactivity of selenium bearing small organic compounds. In addition to this, molecular docking studies and pharmacokinetic profile highlights potential binding affinity with target proteins and also suggests their promising bioactivity. The interaction between the regulatory proteins involved in pancreatic ductal adenocarcinoma (PDAC) and the synthesized small molecule L1H and L2H shows the involvement of amine group and selenium atom for inhibiting the proteins to potentially stop the growth of cancer cells. The comprehensive investigation lays groundwork for further exploration of these compounds in small molecule drug development and medicinal chemistry.","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":"143431598","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