jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Massimo Lazzari | Giulio Malucelli
Source: Macromolecular Materials and Engineering (article, 2025-08-29)
Field: Materials Science — Biomaterials

Biodegradable Polymer Coatings: Current State‐of‐the‐Art, Recent Advances, and Still Open Challenges ABSTRACT Polymer coatings represent both a key academic research topic and a viable and well‐established industry market. Their characteristics are unique and allow for their application on different types of substrates (such as metal alloys, ceramic materials, polymers, paper, and paperboard), even for uses characterized by high durability. The latter property is perhaps the one behind their extensive diffusion since it guarantees performance over a wide range of time, often comparable with the lifetime of the coated substrate. However, the durability of a coating is not always a desired and sought‐after feature: in fact, there are applications for which the possibility to remove the coating on demand from the coated substrate becomes an extremely important goal, even in the logic of the circular economy. In this context, academic research is trying to develop and implement biodegradable polymer coatings, i.e., thin layers of material that may start interacting with the environment in specific conditions, breaking down into simple substances that do not exhibit toxicity or hazard. This work aims to review the current state‐of‐the‐art related to biodegradable polymer coatings, providing the reader with an overview of the progress made so far in this research field and some perspectives for the coming years. Materials science ; Current (fluid) ; Polymer ; Nanotechnology ; Polymer science ; State of art ; Composite material ; Biochemical engineering ; Engineering ; Electrical engineering biodegradable polymer synthesis and properties ; Dental materials and restorations ; Polymer composites and self-healing
Authors: Bhushan Kumar | Sahil Jangra | Subhankar Das | M. S. Goyat
Source: Zastita materijala (review, 2025-05-03)
Field: Materials Science — Materials Chemistry

State-of-the-art developments in MXenes: A comprehensive review In recent years, two-dimensional (2D) materials have garnered significant attention because of their distinctive properties and potential applications in a wide range of applications. Among these materials, MXenes, a family of transition metal carbides, nitrides, and carbonitrides, have emerged as a prominent class of 2D materials with remarkable structural, electrical, thermal, optical, mechanical, and chemical properties. This review explores recent advancements in the synthesis techniques, properties, and diverse applications of MXenes in energy storage, electromagnetic interference (EMI) shielding, sensors, and environmental applications. Additionally, it provides a bibliometric overview, analyzing 10,957 research papers to assess global scientific trends and future research directions using Web of Science (WOS) data and VOSviewer software. This review aims to provide a comprehensive understanding of the state-of-the-art developments in MXene technology, offering insights into future directions and potential advancements in this rapidly evolving field. MXenes ; State (computer science) ; Computer science ; Engineering MXene and MAX Phase Materials ; 2D Materials and Applications ; Advanced Memory and Neural Computing
Authors: Parmish Kaur | Mikko Nisula | Christophe Detavernier | Anjana Devi
Source: Dalton Transactions (article, 2025-01-01)
Field: Materials Science — Polymers and Plastics

New dithiooxamide derivatives as promising precursors for ALD/MLD applications Hybrid materials synthesized combining atomic layer deposition and molecular layer deposition (ALD/MLD) results in advantageous material properties owing to the functionalities contributed from the inorganic and organic constituents in the film. The number of MLD precursors that are volatile and compatible with ALD precursors are limited. This study explores the synthesis and characterization of new dithiooxamide (DTOA) derivatives with varied side chain lengths for their application in ALD/MLD processes for the fabrication of Cu-R DTOA thin films. Utilizing bis(dimethylamino-2-propoxy)-copper(II) (Cu(dmap)<sub>2</sub>) as the metal precursor, the impact of side chain modifications on the thermal stability and volatility of DTOA derivatives was investigated. Employing complementary analytical tools namely NMR, FTIR and TGA/DSC, the study unveils the structural and thermal properties of synthesized derivatives. From the proof-of-concept ALD/MLD experiments performed, the <i>in situ</i> spectroscopic ellipsometry monitored deposition process demonstrates a controlled linear thickness increase with deposition cycles, affirming the suitability of the DTOA derivatives as MLD precursors. This study delineates the influence of alkyl side chain variation on precursor properties, offering insights into the tailored design of precursors for advanced material deposition. Thermal stability ; Atomic layer deposition ; Fabrication ; Alkyl ; Characterization (materials science) ; Fourier transform infrared spectroscopy ; Deposition (geology) ; Hybrid material Synthesis and properties of polymers ; Coordination Chemistry and Organometallics ; Carbon dioxide utilization in catalysis
Authors: Gobind Kumar | Sahil Mishra | Pule Seboletswe | Nontobeko Gcabashe | Lalitha Gummidi | Neha Manhas | Talent Raymond Makhanya | Gaurav Bhargava | Almahi Idris | Md. Shahidul Islam | Parvesh Singh
Source: Chemistry & Biodiversity (article, 2025-08-30)
Field: Chemistry — Organic Chemistry

DES‐Promoted Synthesis of 3,4‐Dihydropyrimidinones and Their Antidiabetic and Antioxidant Evaluation Supported With Computational Studies A series of 3,4-dihydropyrimidinone (DHPM) derivatives was synthesized using a green deep eutectic solvent (DES) system composed of ZnCl<sub>2</sub> and urea, which acted simultaneously as solvent, catalyst, and in situ substrate (urea). The synthesized compounds were evaluated for their antidiabetic potential via α-glucosidase and α-amylase inhibition assays, as well as for antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP), and nitric oxide (NO) scavenging assays. Among the series, compound 3f exhibited superior inhibitory activity against α-glucosidase (IC<sub>50</sub> = 35.25 µM) and α-amylase (IC<sub>50</sub> = 38.61 µM), being ∼2.3- and ∼2.6-fold more potent, respectively, than the standard drug acarbose. In antioxidant evaluations, compound 3i (IC<sub>50</sub> = 35.60 µM) demonstrated ∼2.9-fold higher activity than gallic acid in the DPPH assay, whereas 3d (IC<sub>50</sub> = 30.70 µM) and 3a (IC<sub>50</sub> = 44.52 µM) showed ∼3.8- and ∼1.5-fold higher activity in FRAP and NO scavenging assays, respectively. Molecular docking studies revealed key hydrogen bonding interactions of 3f with the active site residues of both enzymes, supported by favorable docking scores. Furthermore, density functional theory (DFT) studies revealed favorable electronic and reactivity profiles, whereas ADME/T predictions indicated good drug-likeness. Overall, compound 3f shows strong potential as a lead antidiabetic agent for managing postprandial hyperglycemia. Chemistry ; Antioxidant ; Combinatorial chemistry ; Pharmacology ; Biochemistry Multicomponent Synthesis of Heterocycles ; Synthesis and biological activity ; Synthesis and Biological Evaluation
Authors: Xinheng Wu | Hao Zhang | Defeng Chen | Xixian Yan | Chi Zhang | Fanglei Zeng | Ning Li | Xiaogang He
Source: Polymer Composites (article, 2025-08-08)
Field: Materials Science — Materials Chemistry

Thermal Conducting Channel Based on the Concept of Biological Buffer Compensation System: High Speed and Stable Phonon Transport ABSTRACT This paper explores the use of modified boron nitride (BN) and carbon nanotubes (CNTs) as fillers for castor oil‐based polyurethane resin. Utilizing vacuum filtration and hot‐pressing techniques, the thermally conductive polysiloxane amino ester was optimized to form high‐speed stable phonon conduction pathways through dynamic covalent bonding and microphase separation, thereby enhancing the heat transfer performance of polymer thermal interface materials (TIMs). The composite material, when filled with 30 wt% of these fillers, exhibits a thermal conductivity ( λ ) of 3.86 W/(m K), representing a 14.86‐fold increase compared to silane‐modified polyurethane ( λ = 0.26 W/(m K)). This thermally conductive polymer demonstrates a tensile stress of 24.2 MPa and an elongation at break of 26.89%, with a volume resistivity reaching 10 12 Ω cm. Notably, the thermal conductivity of this composite material also displays exceptional stability, remaining nearly unchanged (&lt; 2.5%) across a wide high and low temperature range, meeting the demands of modern extreme temperature working conditions. This combination of stable high thermal conductivity and insulation properties presents significant potential for applications in thermal management. Materials science ; Composite material ; Thermal conductivity ; Boron nitride ; Thermal stability ; Polyurethane ; Composite number ; Carbon nanotube ; Thermal conduction ; Ultimate tensile strength ; Electrical conductor ; Polymer ; Chemical engineering Thermal properties of materials ; Dielectric materials and actuators ; Advanced Thermoelectric Materials and Devices
Authors: Praveen Priyaranjan Nayak | Biswajit Swain | Rashmi Rani Patro | Sudhansu Sekhar Hota | Om Prakash Das | Subrat Kumar Bhuyan
Source: Journal of Metals Materials and Minerals (article, 2025-10-24)
Field: Materials Science — Polymers and Plastics

Comprehensive study on the structural and optical properties of bismuth manganese oxide composite ceramic for optoelectronic applications This work assessed the potential of bismuth manganese oxide composite ceramic for optoelectronic applications by methodically examining its structural, vibrational, and optical characteristics. X-ray diffraction (XRD) spectroscopy provided the coexistence of Bi12MnO20 (sillenite-type) and Bi2Mn4O10 (mullite-type) phases, indicating a deviation from the ideal perovskite structure and suggesting a complex crystallographic nature influencing its functional properties. Fourier transform infrared (FTIR) spectroscopy confirmed the modes of vibration of Bi–O and Mn–O bonds that were contained, supporting the structural composition. UV-Vis-NIR spectroscopy demonstrated strong optical absorption in the 300 nm to 800 nm range, affirming the suitability of the material for optoelectronic applications. The bandgap energy was determined to be 3.091 eV, with Tauc's analysis revealing direct transitions at 0.66 eV and 5.15 eV and indirect transitions at 1.11 eV and 5.17 eV, suggesting multiple electronic absorption mechanisms. The Urbach energy of 3.34 eV indicated significant structural disorder due to composite nature and lattice distortions. Additionally, extinction coefficient and penetration depth analysis confirmed strong light-matter interaction, reinforcing potential properties for optical coatings, photodetectors, and energy-harvesting applications. Bismuth ; Spectroscopy ; Band gap ; Absorption spectroscopy ; Ceramic ; Attenuation coefficient ; Molar absorptivity ; Absorption (acoustics) ; Fourier transform infrared spectroscopy Transition Metal Oxide Nanomaterials ; ZnO doping and properties ; Gas Sensing Nanomaterials and Sensors
Authors: M.P. Bhatt | Arron C. Deacy | Ian A. Tonks
Source: ChemRxiv (preprint, 2025-07-30)
Field: Materials Science — Biomaterials

Ureate anion-catalyzed ring-opening polymerization (ROP) of CO2-derived lactones: rapid catalysis through pKa matching The kinetics of ureate anion-catalyzed ring-opening polymerization (ROP) of 3,6-diethyltetrahydro-2H-pyran-2-one (DEtP) and 3-ethyl-6- vinyltetrahydro-2H-pyran-2-one (EtVP), CO2-derived lactones, is reported. Polymerization rates were significantly enhanced by matching the pKₐ of a particular urea and the pKa-H of the base, with stronger bases and more weakly acidic ureas leading to universally fastest catalysis—reducing reaction times from earlier-reported days to minutes/seconds. In parallel, 2-ethylheptanoic acid (EHA), a byproduct from DEtP monomer synthesis, was discovered to completely suppress polymerization, even in trace amounts. This highlights the need for rigorous purification protocols to ensure high monomer purity. These results demonstrate the dual importance of chemical purity and rational catalyst design for achieving rapid ROP of CO2-derived DEtP and offer a framework for advancing sustainable polymer synthesis. Catalysis ; Ring (chemistry) ; Polymerization ; Chemistry ; Ring-opening polymerization ; Matching (statistics) ; Ion ; Combinatorial chemistry ; Polymer chemistry ; Organic chemistry ; Polymer ; Medicine biodegradable polymer synthesis and properties ; Carbon dioxide utilization in catalysis ; Advanced Polymer Synthesis and Characterization
Authors: Oskars Bitmets | Bejan Hamawandi | Raitis Gržibovskis | José F. Serrano‐Claumarchirant | Muhammet S. Toprak | Kaspars Pudžs
Source: Preprints.org (preprint, 2025-07-30)
Field: Materials Science — Materials Chemistry

Enhanced Stability of Water-Processed Sb₂Te₃:PEO Thermoelectric Hybrids via Thiol-Based Surface Functionalization This study explores the development of a water-based hybrid thermoelectric (TE) material composed of Sb₂Te₃ nanoparticles (NPs) synthesized via solution chemistry and microwave-assisted heating, and polyethylene oxide (PEO). X-ray diffraction confirmed the purity and quality of the Sb₂Te₃ NPs. Key properties, including the Seebeck coefficient (S), electrical conductivity (s), power factor (PF), and long-term stability were studied. X-ray photoelectron spectroscopy (XPS) analysis revealed that exposure to water and oxygen leads to NP oxidation, which can be partially mitigated by hydrochloric acid (HCl) treatment, though this does not halt ongoing oxidation. Scanning electron microscopy (SEM) images displayed a percolation network of NPs within the PEO matrix. While the initial s was high, a decline occurred over eight weeks, resulting in similar conductivity among all samples. The effect of surface treatments, such as hexane dithiol (HDT), was evaluated and found to enhance long-term stability. The results highlight both the challenges and potential of Sb₂Te₃/PEO hybrids for TE applications, especially regarding oxidation and durability, and underscore the need for improved synthesis and treatment techniques to optimize their performance. This study provides valuable insights for the design of next-generation flexible TE materials and emphasizes the importance of surface chemistry control in polymer-inorganic nanocomposites. Surface modification ; Thiol ; Materials science ; Thermoelectric effect ; Chemical engineering ; Surface (topology) ; Polymer chemistry ; Nanotechnology ; Chemistry ; Organic chemistry ; Mathematics ; Physics ; Engineering ; Thermodynamics Advanced Thermoelectric Materials and Devices ; Environmental Education and Sustainability ; Environmental Sustainability in Business
Authors: Philip Norcott
Source: ChemPhysChem (article, 2025-05-01)
Field: Chemistry — Spectroscopy

Molecular Fragmentation as a Strategy to Access Hyperpolarized Compounds from Para‐Hydrogen Hyperpolarization significantly increases the detectability of molecules in magnetic resonance spectroscopy and imaging. Beyond recent advancements in hardware and catalyst design, this article discusses harnessing the inherent chemical reactivity of hyperpolarization target molecules as a strategy to expand the scope and versatility of para-hydrogen-based methods. Various fragmentation reactions are considered for their potential to generate otherwise inaccessible hyperpolarized species, thereby broadening potential applications. Fragmentation (computing) ; Hydrogen ; Hydrogen molecule ; Chemical physics ; Chemistry ; Nanotechnology ; Materials science ; Computational chemistry ; Computer science ; Organic chemistry Advanced NMR Techniques and Applications ; Solid-state spectroscopy and crystallography ; Molecular Spectroscopy and Structure
Authors: Yu Zhang | Lijun Yang | Weng‐Chon Cheong | Shoujie Liu | Zewen Zhuang | Chen Chen
Source: Nano Research (article, 2025-08-06)
Field: Materials Science — Materials Chemistry

One-pot synthesis of single-atom iridium on ordered mesoporous carbon-based materials for direct dehydrogenation of lower alkanes Developing a simple and efficient method for synthesizing single-atom catalysts is of great significance in promoting the advancement of this field. Here, a one-pot synthesis strategy was successfully employed to fabricate an iridium single-atom catalyst supported on ordered mesoporous carbon-based material. During the preparation process, carbon and nitrogen elements spontaneously anchored iridium species from the initial mixing of reactants, ultimately forming atomically dispersed active sites. The as-prepared catalyst exhibits ordered mesoporous architecture, which not only facilitates rapid reactant contact and mass transfer of reactants but also stabilizes active centers through spatial confinement effects. The catalyst demonstrates superior catalytic performance and stability in lower alkane dehydrogenation reactions, achieving an iso-butane conversion of 35.3% with 98.7% selectivity for iso-butene at 450 °C (substantially lower than the operating temperature required by conventional Pt-based catalysts). This method provides a novel approach for large-scale preparation of single-atom catalysts and has important application prospects, which are expected to play a significant role in the field of energy catalysis. Dehydrogenation ; Iridium ; Mesoporous material ; Materials science ; Atom (system on chip) ; Carbon fibers ; Chemical engineering ; Catalysis ; Nanotechnology ; Chemistry ; Organic chemistry ; Composite material ; Computer science Catalytic Processes in Materials Science ; Catalysis and Oxidation Reactions ; Advanced Materials Characterization Techniques
Authors: Christian Urbank | Christopher Golz | Lisa Vondung
Source: ChemRxiv (preprint, 2025-08-25)
Field: Chemistry — Inorganic Chemistry

Synthesis and Characterisation of Uranium(IV) Complexes with Tridentate NNS Ligands Hybrid ligands combining hard and soft donor groups can potentially enable new reactivity patterns for low valent uranium complexes. We therefore investigated the coordination chemistry of the NNS pincer ligands N-[2-(ethylthio)ethyl]-2-pyridinemethaneamine (PyNHSEt) and N-[2-(phenylthio)ethyl]-2-pyridinemethaneamine (PyNHSPh) with uranium(IV). Analogous complexes were obtained for both ligands, with two equivalents of the ligand coordinating to uranium via the pyridine and amine nitrogen atoms. The complexes were characterised by NMR, IR and UV-Vis-NIR spectroscopies, DOSY NMR and in the case of [UCl4(PyNHSPh)2] single crystal x-ray diffraction. The deprotonation of the neutral pro-ligand was not successful and deprotonation of the coordinated ligand led to decomposition of the complex and protonation of the amine in the ligand. Uranium ; Chemistry ; Combinatorial chemistry ; Materials science ; Metallurgy Radioactive element chemistry and processing
Authors: Mardhiahtul Iftiah Ariffin | Fareha Hilaluddin | Norli Abdullah | Mohd Junaedy Osman | Nor Laili‐Azua Jamari | Keat Khim Ong | Jahwarhar Izuan Abdul Rashid | Wan Md Zin Wan Yunus | Nadiatur Akmar Zulkifli | Siti Aminah Mohd Noor | Victor Feizal Knight | Seng Teik Ten | Mohd Nor Faiz Norrrahim
Source: Journal of Advanced Research in Micro and Nano Engieering (article, 2025-04-30)
Field: Materials Science — Materials Chemistry

Portable Detection of Malathion: Gold Nanoparticle-Based Colorimetric Aptasensor Coupled with Image Analysis Malathion is a commonly used organophosphate insecticide in agriculture, known for its effectiveness against a wide range of pests. However, the impact of its residues on the environment is a significant concern, with potential long-term effects on ecosystems, biodiversity, and human health. Therefore, on-site detection for monitoring its residues in the environment is crucial to ensure appropriate safety measures for usage. In this study, a rapid and simple colorimetric aptasensor that integrated with image analysis for malathion detection was explored. After adding malathion into a sensing solution (citrate-capped gold nanoparticles and a thiolated DNA aptamer), a visible color change can be observed within 15 seconds. Then, the color of the solution was captured by a smartphone and quantified to red, green, and blue (RGB) values. Under the optimum detection conditions, the developed aptasensor showed a good linear correlation between colorimetric response and MLT concentration (0.05 to 10.0 nM), with a low detection limit of 96 pM. The aptasensor showed excellent selectivity towards malathion in the presence of potential pesticides that could be present in the environment. Furthermore, the application of the aptasensor demonstrated successful in the detection of malathion in the spiked tap water samples, achieving satisfactory recovery rates (about 90 to 106%). These findings demonstrated that the proposed aptasensor provides a fast, sensitive and reliable detection of MLT, offering a promising tool for environmental detection of MLT. Colloidal gold ; Malathion ; Nanotechnology ; Nanoparticle ; Chemistry ; Chromatography ; Materials science ; Pesticide ; Biology Advanced Nanomaterials in Catalysis ; Advanced biosensing and bioanalysis techniques ; Advanced Chemical Sensor Technologies
Authors: K. Siddappa | Kalabeerappa N. Mahadev
Source: African Journal of Biomedical Research (article, 2025-01-01)
Field: Chemistry — Organic Chemistry

Synthesis, Characterization and Antimicrobial Study of Some Transition Metal Complexes Derived from Coumarin Moiety Antibiotic resistance and microbial diseases are currently the two biggest problems endangering society's health. In this study, the reaction of 3-Pyridylcarbonylhydrazine with 2-acetyl-3H-benzo[f]chromen-3-one gave the new ligand; N'-(1-(3-oxo-3H-benzo[f]chromen-2-yl)ethylidene)nicotinohydrazide. The Co (II), Ni(II), Cu(II), Zn(II), and Cd(II) complexes have been accomplished with newly synthesized ligand. The structural characterization was achieved using magnetic data, molar conductance and elemental analysis, UV-visible, FT-IR, 1H NMR, and mass spectra to describe the ligand and the complexes. The FT-IR spectral data showed that this caused the ligand to bond with the metal ions in a tridentate way. The UV-visible spectral and magnetic data showed that the complexes exhibit octahedral geometry. The study of antimicrobial action showed that complex formation increased the free ligand activity. The Co(II) and Zn(II) complexes have the potential to be both an effective antifungal and a promising antibacterial agent. Coumarin ; Moiety ; Antimicrobial ; Characterization (materials science) ; Combinatorial chemistry ; Chemistry ; Transition metal ; Metal ; Stereochemistry ; Nanotechnology ; Organic chemistry ; Materials science ; Catalysis Inorganic and Organometallic Chemistry