jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Ronagul Turganova | Rysgul N. Tuleyeva | Ayaz M. Belkozhayev | Nargiz N. Gizatullina | Gaukhargul Yelemessova | Anel Taubatyrova | Madina Mussalimova | Zhanserik Shynykul | Gaukhar Toleutay
Source: Polymers (review, 2025-11-28)
Field: Materials Science — Biomaterials

Bacterial Cellulose for Sustainable Food Packaging: Production Pathways, Structural Design, and Functional Modification Strategies Global concern over food waste and plastic pollution highlights the urgent need for sustainable, high-performance materials that can replace petroleum-based plastics. Bacterial cellulose (BC), a biopolymer synthesized through microbial fermentation by <i>Komagataeibacter</i> and related genera, shows exceptional purity, mechanical strength, biodegradability, and structural tunability. Following PRISMA principles, this review analyzed studies from PubMed, Scopus, and Web of Science covering the period 1960-November 2025. Search terms included "bacterial cellulose", "<i>Komagataeibacter</i>", "<i>Gluconacetobacter</i>", "static culture", "agitated culture", "in situ modification", "ex situ modification", "fermentation", and "food packaging". Inclusion and exclusion criteria ensured that only relevant and high-quality publications were considered. The article summarizes major developments in BC biosynthesis, structural organization, and modification approaches that enhance mechanical, barrier, antioxidant, and antimicrobial properties for food packaging. Recent advances in in situ and ex situ functionalization are discussed together with progress achieved through synthetic biology, green chemistry, and material engineering. Evidence shows that BC-based composites can reduce oxygen and moisture permeability, strengthen films, and prolong food shelf life while maintaining biodegradability. Remaining challenges such as high cost, lengthy fermentation, and regulatory uncertainty require coordinated strategies focused on metabolic optimization, circular bioeconomy integration, and standardized safety frameworks to unlock BC's full industrial potential. Bacterial cellulose ; Cellulose ; Biopolymer ; Sustainable production ; Sustainability ; Surface modification ; In situ ; Food packaging Advanced Cellulose Research Studies ; Nanocomposite Films for Food Packaging ; biodegradable polymer synthesis and properties
Authors: Xue Du | Chunbao Chen | Yijun Zeng | Zhuangbin Lin
Source: Frontiers in Pharmacology (review, 2025-11-24)
Field: Materials Science — Biomaterials

Overcoming the blood-brain barrier: targeted delivery strategies for gliomas Neurological gliomas, as the most common and deadly primary brain tumors, face two major therapeutic obstacles: the blockade of the blood-brain barrier (BBB) and high tumor heterogeneity. In recent years, research on novel drug delivery systems has brought hope for glioma treatment. This article elaborates on the research progress of novel drug delivery systems in glioma treatment, including various nanocarriers, targeted delivery strategies, and gene therapy drug delivery systems. It analyzes their advantages and challenges, outlooks future development directions, and aims to provide a reference for optimizing drug delivery systems for glioma therapy. Drug delivery ; Glioma ; Drug ; Targeted drug delivery ; Blockade ; Delivery system Nanoparticle-Based Drug Delivery ; Nanoplatforms for cancer theranostics ; Glioma Diagnosis and Treatment
Authors: R. E. Azooz | Shymaa M. Abd Elhaleem | Ahmed Diab
Source: Journal of Electrochemical Science and Engineering (article, 2025-02-14)
Field: Chemistry — Organic Chemistry

Pyrazolone derivatives as corrosion inhibitors of copper in sulfuric acid solution This study examines the corrosion inhibition of copper in aerated H2SO4 solution using 5-methyl, 5-phenyl, and 5-methyl-2-phenyl derivatives of 2,4-dihydro-3H-pyrazol-3-one (Py) through electrochemical techniques, gravimetric method, SEM, DFT and Monte Carlo simulation. The results showed that these compounds exhibited good inhibition efficiency, increasing in the order: Py II (84.9 %) &lt; Py III (87.9 %) &lt; Py I (90.1 %) at 10 mM. The pro¬tection efficiency improved with higher inhibitor concentration and decreased with rising temperature. Thermodynamic parameters for the inhibition process were calculated, with /delta)Hads0 values of -17.76±0.607, -15.8±0.101 and -16.24±0.118 kJ mol-1 for Py I, Py II and Py III, respectively, confirming the exothermic nature of adsorption. The adsorption fol¬lowed the Langmuir isotherm and occurred physically and spontaneously. Monte Carlo simulations indicated that PYs adsorbed in a parallel configuration, provide better cover¬age of the metal surface with high adsorption energy. SEM confirmed formation of a protective layer. Based on experimental and theoretical data, pyrazolone derivatives are recommended as corrosion inhibitors for copper in H2SO4 media. Sulfuric acid ; Copper ; Chemistry ; Corrosion ; Erosion corrosion of copper water tubes ; Combinatorial chemistry ; Nuclear chemistry ; Inorganic chemistry ; Organic chemistry Synthesis and Characterization of Heterocyclic Compounds ; Synthesis of Tetrazole Derivatives ; Material Properties and Applications
Authors: Mohammad Shahed Hasan Khan Tushar | M. Sam Mannan | Afra Azmain
Source: Heliyon (article, 2025-01-30)
Field: Materials Science — Materials Chemistry

Exhaust gas after treatment using air preheating and selective catalytic reduction by urea to reduce NOx in diesel engine The oxides of nitrogen (NO<sub>x</sub>) emitted from diesel engines are perilous pollutants, contributing to environmental and health hazards. Selective Catalytic Reduction (SCR) using urea is a proven technology for reducing NO<sub>x</sub> emissions, while air preheating has been utilized to enhance NO<sub>x</sub> reduction efficiency. From the studies, a sole focus on urea-SCR with air preheating remains noticeably unexplored. This study presents an integrated approach using urea-SCR and air preheating in a four-stroke, single-cylinder, water-cooled diesel engine for a comparative study in decreasing NO<sub>x</sub> emissions. The experimental setup involved a mechanical urea injection system, a platinum-rhodium catalyst, and an air-preheating mechanism utilizing exhaust gas heat. Tests were conducted at varying engine speeds and loads to evaluate the combined system's performance. Results indicate that the combined air preheating and urea-SCR system achieved a NO<sub>x</sub> reduction of up to 55 % under low engine load conditions, with a corresponding CO emission reduction of 19 % for preheated set-up. The system enhanced brake thermal efficiency (BTE) and reduced brake-specific fuel consumption (BSFC) compared to baseline configurations, with no significant backpressure observed. A significant noise level reduction (21-27 %) was also achieved, highlighting the dual benefits of emissions and noise control. The findings demonstrate that combining urea-SCR with air preheating is an effective strategy for reducing NOx emissions while maintaining or improving engine performance. This approach offers a promising pathway for enhancing diesel engine emission control systems. Further studies are recommended to explore the scalability of this method for larger engines and to assess long-term system stability. NOx ; Diesel exhaust fluid ; Selective catalytic reduction ; Diesel exhaust ; Diesel engine ; Exhaust gas recirculation ; Waste management ; Environmental science ; Diesel fuel ; Catalysis ; Urea ; Exhaust gas ; Chemistry ; Automotive engineering ; Engineering ; Organic chemistry ; Combustion Catalytic Processes in Materials Science ; Advanced Combustion Engine Technologies ; Industrial Gas Emission Control
Authors: Zoleikha Abbasi | Yagoub Mansoori | Somayeh Fekri | Yüksel Akınay | Tayfun Çetin
Source: Scientific Reports (article, 2025-07-30)
Field: Chemistry — Organic Chemistry

Magnetically retrievable 2-(2-Pyridyl)benzimidazole-Cu(I) on SBA-15@Fe3O4 for sodium Azide-Induced amination of Aryl halides This study reports the synthesis and thorough characterization of a novel copper catalyst immobilized on magnetic mesoporous silica (Fe<sub>3</sub>O<sub>4</sub>@SBA-15). The catalyst preparation involved stepwise functionalization of Fe<sub>3</sub>O<sub>4</sub>@SBA-15 through sequential treatment with (3-aminopropyl)triethoxysilane (APTES), trichlorotriazine, and 2-(2-pyridyl)benzimidazole, resulting in Fe<sub>3</sub>O<sub>4</sub>@SBA-bis(PBI). Subsequent coordination with CuI in acetonitrile produced the final catalyst complex, Fe<sub>3</sub>O<sub>4</sub>@SBA-bis(PBI)-Cu. Extensive characterization was performed using standard spectroscopic techniques. The copper content of the catalyst was determined by atomic absorption spectroscopy to be 0.866 mmol g<sup>-1</sup> (5.5 wt%). Catalytic performance evaluation demonstrated that Fe<sub>3</sub>O<sub>4</sub>@SBA-bis(PBI)-Cu effectively catalyzes the conversion of iodo-, bromo-, and chloroarenes to their respective anilines, using NaN<sub>3</sub> as the nitrogen source. Notably, the catalyst exhibited excellent recyclability, maintaining catalytic activity over six successive cycles with minimal deactivation, highlighting its robustness and suitability for sustainable catalytic applications in organic synthesis. The low metal leaching (0.4%) shows that the copper is firmly bound to the ligand, and the reaction was mainly carried out by a heterogeneous catalyst. Benzimidazole ; Aryl ; Sodium azide ; Halide ; Amination ; Chemistry ; Sodium ; Combinatorial chemistry ; Azide ; Organic chemistry ; Catalysis Chemical Synthesis and Reactions ; Synthesis and Catalytic Reactions ; Chemical Synthesis and Analysis
Authors: Jinsha Liao | Peiyao Wang | Wenjie Jiang | Xiaoyang Du | Jefferson Zhe Liu | Dan Li
Source: Advanced Materials (article, 2025-06-25)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Unraveling the Impact of Electrosorbed Ions on the Scaling Behavior of Fast‐Charging Dynamics of Nanoporous Electrodes Toward Digital Design of Iontronic Devices Electrolyte-filled nanoporous electrodes with fast-charging capability are critical for advanced energy storage and iontronic devices. However, experiments and simulations consistently show that increasing electrode thickness degrades performance by limiting ion access to effective electrode/electrolyte interfaces, especially under fast-charging conditions. While often attributed to sluggish ion transport, the underlying mechanisms and the quantitative link between thickness and performance remain unclear due to complex pore structures and nanoconfined ion dynamics. Here, using multilayered graphene membranes as a model system, modified Poisson-Nernst-Planck simulations with experiments are combined to reveal how electrosorbed ions reshape local electrical and chemical potentials, particularly as the surface-to-volume ratio increases with reduced pore size. It is shown that electrosorbed ions substantially influence the scaling behavior of capacitance across electrode thicknesses, causing marked deviations from classical transmission line models as pores approach nanometric dimensions. Despite the complexity introduced by nanoconfinement, introducing a correction factor enables capacitance-scan rate relationships to collapse into a unified curve across various electrode architectures, allowing computationally efficient design of high-performance fast-charging electrochemical and iontronic devices. This work highlights the unique role of 2D nanomaterials as a versatile platform for bridging experiments and theory to address long-standing challenges in ion transport dynamics. Materials science ; Nanoporous ; Electrode ; Electrolyte ; Ion ; Nanotechnology ; Chemical physics ; Capacitance ; Scaling ; Nanomaterials ; Nanopore ; Graphene ; Optoelectronics ; Physics Supercapacitor Materials and Fabrication ; Advancements in Battery Materials ; Conducting polymers and applications
Authors: Wenhao Xu | Xiaojie He | Yu Zhou | Lan Jiang | Weiyou Yang | Qinghua Lu | Peng Xiao
Source: Polymers (article, 2025-05-28)
Field: Materials Science — Polymers and Plastics

Effect of Diamine Monomers with Varied Backbone Structures on Dielectric and Other Comprehensive Properties of Fluorinated Polyimide Films Fluorinated polyimide (FPI), renowned for its exceptional low-dielectric properties, colorless transparency, high-temperature resistance, and flexibility, has emerged as an ideal material for addressing challenges in 5G/6G high-frequency signal transmission and flexible electronic substrates. Nevertheless, the structure-property relationship between molecular architectures and the dielectric characteristics of FPI films remains insufficiently understood, necessitating urgent elucidation of the underlying mechanisms. In this study, a diamine monomer containing bis-amide bonds, 4-amino-N-{4-[(4-aminobenzoyl)amino]phenyl}benzamide (PABA), was synthesized. Subsequently, six FPI films (FPAIs, FPEIs, and FPEsIs) with distinct structural features were prepared through homopolymerization of PABA and five other diamines (containing amide bonds, ether, and ester groups) with fluorinated dianhydride (6FDA). Systematic characterization of thermal, mechanical, optical, and dielectric properties revealed that these films exhibit excellent thermal stability (<i>T</i><sub>g</sub>: 296-388 °C), mechanical strength (<i>σ</i>: 152.5-248.1 MPa, <i>E</i>: 2.1-3.4 GPa), and optical transparency (<i>T</i><sub>550 nm</sub>: 82-86%). Notably, they demonstrated a low dielectric constant (<i>D</i><sub>k</sub> as low as 2.8) and dielectric loss (<i>D</i><sub>f</sub> down to 0.002) under both low- and high-frequency electric fields. Furthermore, molecular dynamics simulations and quantum chemical were employed to calculate critical physical parameters and HOMO-LUMO energy levels of the six FPIs. This computational analysis provides deeper insights into the structure-performance correlations governing dielectric behavior and optical transparency in FPIs. The findings establish valuable theoretical guidance for designing advanced PI films with tailored dielectric properties and high transparency. Polyimide ; Diamine ; Materials science ; Monomer ; Dielectric ; Polymer chemistry ; Composite material ; Polymer ; Optoelectronics ; Layer (electronics) Synthesis and properties of polymers ; Silicone and Siloxane Chemistry ; Dielectric materials and actuators
Authors: Alice Waithaka | Sofia Plakantonaki | Kyriaki Kiskira | Ann Wairimu Mburu | Ioannis Chronis | G. Zakynthinos | John T. Githaiga | Georgios Priniotakis
Source: Waste (article, 2025-10-25)
Field: Materials Science — Biomaterials

Cellulose-Based Biopolymers from Banana Pseudostem Waste: Innovations for Sustainable Bioplastics Plastic materials are widely used for packaging due to their versatility and availability. Global production, mainly from petrochemicals, is estimated at 380 million tons, increasing annually by 4%. Packaging plastics have the shortest lifespan and contribute significantly to environmental pollution. Current production, use, and disposal of these plastics harm the environment, hu-mans, and ecosystems. Microplastics, (plastics particles ranging from 1 µm to 5 mm) formed through degradation, accumulate in ecosystems and the human body, including the brain. Bioplastics and biodegradable polymers from biological sources are a sustainable alternative; however, most production still relies on food crops, raising concerns about food security and sustainability. Utilizing organic wastes reduces production costs, lessens pressure on food systems, and supports waste management efforts. Cellulose, an abundant natural polymer, offers strong potential due to biodegradability, availability, and mechanical properties. This review explores extracting cellulose from banana pseudostem waste for packaging, high-lighting extraction and conversion methods and characterization via FTIR, TGA, SEM, XRD, and mechanical testing. FTIR confirmed the effective removal of lignin and hemicellulose, XRD revealed increased crystallinity corresponding to Type I cellulose, SEM showed a roughened fiber surface after alkaline treatment, and TGA indicated high thermal stability up to 250 °C. The goal is eco-friendly packaging by promoting agrowaste use. Further research should improve performance and scalability of cellulose-based bioplastics to meet industry needs and compete effectively with conventional plastics. Bioplastic ; Raw material ; Food packaging ; Thermal stability ; Lignin ; Cellulose ; Biopolymer ; Biodegradable waste Advanced Cellulose Research Studies ; Nanocomposite Films for Food Packaging ; Natural Fiber Reinforced Composites
Authors: Myrsini Sakarika | Joost Brancart | Shreyash Anil Gujar | Steven De Meester | Luis D. Allegue | Leen Bastiaens | Peter Ragaert | Siegfried E. Vlaeminck | Heleen De Wever | Korneel Rabaey
Source: Environmental Science and Ecotechnology (review, 2025-11-01)
Field: Materials Science — Biomaterials

Microbial protein-derived bioplastics from renewable substrates: pathways, challenges, and applications in a circular economy Microbial protein (MP)-the protein-rich biomass derived from recovered or virgin resources-is attracting interest as a source of food and feed. However, its potential as a feedstock for protein-based bioplastics remains underexplored. Proteins offer desirable properties, including superior oxygen-barrier capabilities and complete biodegradability, making them ideal for applications from food packaging to agricultural mulches. Currently, most protein-based bioplastics derive from crops such as wheat, restricting applications and competing with food production. MP can overcome these limitations by supplying diverse proteins from various inputs, including CO<sub>2</sub>, biomass, and liquid side-streams. In this review, we evaluate bioprocessing pathways for producing MP from renewable and waste-derived substrates from an interdisciplinary viewpoint. We also examine the technical, regulatory, market, and environmental factors to address, delineating the pathway from substrate to MP-based plastics and highlighting key challenges throughout the production chain. Novel strategies-such as efficient co-recovery of proteins with other cellular products like polyhydroxyalkanoates or direct use of microbial biomass without extraction-are essential to maximize environmental and economic sustainability. Carefully chosen processing methods for recovered proteins, including wet and dry blending or extrusion with other biopolymers, can yield diverse products. Concurrently, policy and market developments are vital for adopting MP-based bioplastics. Addressing these challenges will enable MP-based bioplastics to propel the shift toward a circular economy, diminishing dependence on fossil-derived plastics and alleviating plastic pollution. Bioplastic ; Bioprocess ; Raw material ; Renewable energy ; Biomass (ecology) ; Circular economy ; Renewable resource Nanocomposite Films for Food Packaging ; biodegradable polymer synthesis and properties ; Microplastics and Plastic Pollution
Authors: Wenhui Niu | Chi Fang | Lucas M. K. Tang | Elif Ünsal | Yubin Fu | Jitul Deka | Fupin Liu | Alexey A. Popov | Fu‐Peng Wu | Huanhuan Shi | Hartmut Komber | Arezoo Dianat | Rafael Gutiérrez | Ji Ma | Yutao Sang | Gianaurelio Cuniberti | S. Parkin
Source: Chemical Science (article, 2025-01-01)
Field: Chemistry — Organic Chemistry

Lateral π-extended helical nanographenes with large spin polarization The possibility that current passing through an organic molecule becomes spin-polarized is highly intriguing. Amongst these molecules, helicene units have recently been shown to exhibit such a chiral-induced spin selectivity (CISS) effect. Thus, helical nanographenes (NGs), whose core building block is a helicene unit, are natural candidates for generating CISS. However, reports on the CISS effect in helical nanographenes (NGs) remain limited, primarily due to the lack of a suitable molecular platform for detecting spin-selective transport. In this work, we have developed a synthetic strategy using pre-fused key bonds in oligophenylene precursors and successfully synthesized lateral extended NGs that incorporate either single or double undecabenzo[7]helicene units with high yields. The resultant lateral extended helical NGs display excellent chiroptical properties including strong circular dichroism and large dissymmetry factors. Furthermore, magneto-conductive atomic force microscopy (mc-AFM) and magnetoresistance (MR) measurements show clear evidence for spin polarization of the current with a large spin polarization of up to 80% and a robust MR of 1.5% at room temperature. Together with theoretical modeling, our results identify lateral extended helical NGs as promising quantum materials for future organic spintronic devices. Helicene ; Molecule ; Spin (aerodynamics) ; Spin polarization ; Polarization (electrochemistry) ; Chemical physics ; Organic molecules ; Selectivity ; Circular polarization ; Condensed matter physics ; Materials science ; Chemistry ; Physics ; Optics ; Quantum mechanics ; Electron ; Catalysis ; Physical chemistry Synthesis and Properties of Aromatic Compounds ; Advanced NMR Techniques and Applications ; Graphene research and applications
Authors: Francesco Siconolfi | Gabriele Cavaliere | S. Sibilia | Francesco Cristiano | G. Giovinco | Antonio Maffucci
Source: Sensors (article, 2025-05-21)
Field: Materials Science — Materials Chemistry

Industrial-Grade Graphene Films as Distributed Temperature Sensors This paper investigates the feasibility of a multi-purpose use of thin films of industrial-grade graphene, adopted initially to realize advanced coatings for thermal management or electromagnetic shielding. Indeed, it is demonstrated that such coatings can be conveniently used as distributed temperature sensors based on the sensitivity of their electrical resistance to temperature. The study is carried out by characterizing three nanomaterials differing in the percentage of graphene nanoplatelets in the temperature range from -40 °C to +60 °C. The paper demonstrates the presence of a reproducible and linear negative temperature coefficient behavior, with a temperature coefficient of the resistance of the order of -1.5·10-3°C-1. A linear sensor model is then developed and validated through an uncertainty-based approach, yielding a temperature prediction uncertainty of approximately ±2 °C. Finally, the robustness of the sensor concerning moderate environmental variations is verified, as the errors introduced by relative humidity values in the range from 40% to 60% are included in the model's uncertainty bounds. These results suggest the realistic possibility of adding temperature-sensing capabilities to these graphene coatings with minimal increase in complexity and cost. Graphene ; Robustness (evolution) ; Temperature coefficient ; Materials science ; Electromagnetic shielding ; Atmospheric temperature range ; Nanomaterials ; Relative humidity ; Temperature measurement ; Sensitivity (control systems) ; Correlation coefficient ; Linearity ; Thermal ; Linear range ; Nanotechnology ; Computer science ; Composite material ; Electronic engineering ; Thermodynamics ; Mathematics ; Detection limit ; Engineering ; Physics ; Machine learning ; Statistics ; Chemistry Thermal properties of materials ; Advanced Thermodynamics and Statistical Mechanics ; Graphene research and applications