jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Jonas F. Pöhls | R. Thomas Weitz
Source: Advanced Functional Materials (article, 2025-11-22)
Field: Chemistry — Inorganic Chemistry

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance Abstract Metal–organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics due to their tunable structural and electronic properties. However, discrepancies in reported electrical conductivities underscore the critical role of measurement methodologies. This review explores how intrinsic charge transport mechanisms (band‐like vs hopping) and extrinsic factors (grain boundaries, contact resistance) influence performance. This review critically examines the impact of common characterization methods – including two‐probe, four‐probe, van‐der‐Pauw, thin‐film, pellet, and single‐crystal techniques – on the assessment of electronic properties in MOFs and COFs. Case studies on copper benzenehexathiol (Cu 3 BHT) and copper hexahydroxytriphenylene (Cu 3 (HHTP) 2 ) illustrate how factors such as grain boundaries and contact resistance strongly affect measured conductivities. Advanced microscopic and spectroscopic techniques (conductive atomic force microscopy, terahertz spectroscopy) provide nanoscale or dynamic insights but may not reflect macroscopic device behavior. The necessity of standardized, method‐specific reporting and careful selection of characterization strategies to bridge the gap between intrinsic material properties and real‐world electronic performance are highlighted. Bridging (networking) ; Characterization (materials science) ; Electronics ; Nanoscopic scale ; Copper ; Electrical contacts ; Electronic materials ; Electronic structure Metal-Organic Frameworks: Synthesis and Applications ; Covalent Organic Framework Applications ; Copper-based nanomaterials and applications
Authors: Noor S. Sadeq | Siti Norain Harun | Gan Yian Chee | Mohd Basyaruddin Abdul Rahman | Haslina Ahmad | Mas Jaffri Masarudin
Source: Nano Express (review, 2025-12-11)
Field: Chemistry — Inorganic Chemistry

Innovative carrier in cancer therapy: utilization of ZIF-8 as a nanocarrier for combination cancer pharmacotherapy: a review Abstract Metal–Organic Frameworks (MOFs) have rapidly emerged as versatile nanoparticles system for their use in biomedical field, especially in drug delivery. Of the materials in this class, zeolitic imidazolate framework ZIF-8 has recently captured significant interest due to its tunable structure and significant potential for surface modification. It is these same features which allow ZIF-8 to act as a suitable carrier in both single agent and combination therapy. In particular, surface chemistry will be reiterated throughout the present article as significant in improving the physicochemical stability, biocompatibility and targeted drug delivery of the materials. In addition, through well-designed modification strategies ZIF-8 herein we propose to show controlled release profiles, improved colloidal stability, and improved therapeutic efficacy. This review will discuss recent advances made in the surface engineering of ZIF-8 and present salient design principles and functionalisation techniques and their usefulness in the area of drug-delivery applications. Nanocarriers ; Drug delivery ; Biocompatibility ; Nanomedicine ; Targeted drug delivery ; Cancer ; Drug ; Cancer therapy Metal-Organic Frameworks: Synthesis and Applications ; Nanoplatforms for cancer theranostics ; Graphene and Nanomaterials Applications
Authors: Aleyna Gökçen | Manuela Ockel | Matthias Petersen | Nils Thielen | Jörg Franke | Florian Risch
Source: Thermal spray (article, 2025-05-01)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Optimizing Thin Electric Functional Copper Coatings via Atmospheric Plasma Spray: Impact of Particle Temperature and Velocity Abstract The objective of this study is to optimize thin electric and mechanical functional copper coatings using atmospheric plasma spray by determining the impact of particle temperature and velocity on coating properties. A particular focus is placed on the formation of real contact between the particles within the coating, which is crucial for electrical conductivity while the contact at the interface is essential for adhesive strength. Materials science ; Copper ; Plasma ; Atmospheric-pressure plasma ; Thermal spraying ; Thin film ; Particle (ecology) ; Composite material ; Metallurgy ; Nanotechnology ; Coating ; Physics Copper Interconnects and Reliability ; High-Temperature Coating Behaviors
Authors: Makhliyo M. Kuzieva | Fayruza M. Urishova | Abdumutolib Atakhanov | Nurbek  Sh. Ashurov | Sayyora Sh. Rashidova | Dmitriy I. Shiman | Sergei V. Kostjuk | Saewon Kang
Source: Eurasian Journal of Chemistry (article, 2025-12-09)
Field: Materials Science — Biomaterials

Potassium Permanganate–Oxidized Nanocellulose: Structural Features and Rheological Performance for Advanced Applications The development of environmentally friendly strategies for nanocellulose modification is crucial for advancing biomedical materials. Traditional oxidation methods often involve costly or toxic reagents, limiting large-scale use. This study addresses this by preparing oxidized nanocellulose (ONC) from microcrystalline cellulose using an eco-friendly acidic potassium permanganate (KMnO4) oxidation method to introduce surface carboxyl groups. Structural and morphological changes were characterized through FTIR, XRD, SEM, and DLS analyses, which confirmed successful oxidation, retained fibrillar morphology, and altered crystallinity and surface charge. Hydrogel formulations were developed from ONC suspensions, and their rheological properties were assessed through frequency and amplitude sweeps. FTIR spectra confirmed the introduction of carboxyl groups, while XRD revealed reduced crystallinity and lattice expansion with oxidation. DLS demonstrated narrower size distributions at intermediate oxidation times, indicating improved dispersion stability. SEM images confirmed retention of fibrous morphology with reduced fibril widths. Rheological tests showed that ONC hydrogels exhibited shear-thinning and gel-like behavior (G′ &gt; G″), displaying the highest storage modulus and broadest linear viscoelastic region, consistent with a strong and stable gel network. ONC-based hydrogels show significant promise for biomedical applications, including mucoadhesive drug delivery, wound healing, and tissue engineering. Nanocellulose ; Crystallinity ; Rheology ; Self-healing hydrogels ; Potassium permanganate ; Hydroxypropyl cellulose ; Dynamic mechanical analysis ; Dispersion (optics) ; Viscoelasticity ; Fourier transform infrared spectroscopy Advanced Cellulose Research Studies ; Hydrogels: synthesis, properties, applications ; Nanocomposite Films for Food Packaging
Authors: Zeynep Bi̇ci̇l
Source: Sakarya University Journal of Science (article, 2025-10-21)
Field: Materials Science — Materials Chemistry

Investigation of Hydrogen Adsorption Mechanism on Activated Carbon Surface Using Isotherm and Kinetic Models In this study, the hydrogen storage capacities and adsorption behaviors of activated carbons obtained from agricultural wastes such as tangerine peel and horse chestnut were investigated in detail. The carbons were synthesized by chemical activation using ZnCl₂ and characterized by BET surface area and pore analysis. The hydrogen storage capacities of activated carbons produced by chemical activation and carbonization processes were measured as a function of pressure at 77 K up to 80 bar. Horse chestnut-based activated carbon showed higher performance with a maximum hydrogen adsorption capacity of 4.47% at 80 bar, whereas tangerine peel-based activated carbon reached only 1.87% at 26 bar. Adsorption data were analyzed with Langmuir, Freundlich and Temkin isotherm models; the Langmuir model provided the highest fit (R² &gt; 0.99) for both samples. In kinetic analyses, high correlation was obtained with pseudo-second-order and Weber–Morris models. The findings reveal the effectiveness of biomass-based activated carbons in the storage of hydrogen by physical adsorption and contribute to both theoretical and applied aspects of adsorption processes. In this respect, the study provides a scientific basis for the development of environmentally friendly and low-cost adsorbents that can be used in sustainable energy technologies. Activated carbon ; Adsorption ; Freundlich equation ; Hydrogen storage ; Langmuir ; Hydrogen Hydrogen Storage and Materials ; Ammonia Synthesis and Nitrogen Reduction ; Hybrid Renewable Energy Systems
Authors: Weijing Yuan | Hongda Guo | Xue Liu | Zhijun Chen
Source: Materials Advances (article, 2025-11-13)
Field: Materials Science — Biomaterials

Sustainable photoluminescent cellulose composites for next-generation intelligent packaging An overview of the CPLM for intelligent packaging applications. Cellulose ; Food packaging ; Electronic packaging ; Active packaging ; Raw material ; Thermoplastic composites Advanced Cellulose Research Studies ; Nanocomposite Films for Food Packaging ; Dielectric materials and actuators
Authors: Nazgul Ashimkhan | Manshuk Murzagaliyeva | Gulnur Daribayeva | Ardak Sapiyeva
Source: Eastern-European Journal of Enterprise Technologies (article, 2025-08-28)
Field: Materials Science — Polymers and Plastics

Development of polyadsorbents based on polyethylenimine and low molecular weight ligands for the extraction of group II metal ions from wastewater The object of this study is the physicochemical processes of interaction between Group II metal ions and polyethyleneimine (PEI) and low-molecular-weight ligands (salicylic acid, sulfosalicylic acid, EDTA) with the aim of developing polyadsorbents for the selective extraction of toxic ions from aqueous media. The problem to be solved is the development of effective and selective polyadsorbents for removing toxic metal ions from wastewater. Potentiometric, conductometric, and viscometric analysis methods have established that in binary PEI-M2+ systems, coordination complexes are formed with a molar ratio of PEI:M2+ = 2:1. For systems with Sr2+ and Ba2+ ions, stepwise complexation was identified, with particles of composition 6:1 and 4:1 being formed at the initial stage, respectively. The stability of the complexes formed was established in the following order: Be2+ &gt; Ca2+ &gt; Sr2+ &gt; Ba2+ &gt; Mg2+. Thermodynamic parameters showed that the complexation processes are spontaneous and exothermic, with the decrease in entropy being associated with an increase in order within the system. Stability constants (lgβ0) range from 5.4 (Mg2+) to 10.16 (Be2+). Quantum chemical calculations have shown that the reaction centers in the ligand molecules are: the oxygen atoms of the carbonyl group (H2Sal), the sulfonate group (H3Ssal), and the carboxyl group (H2edta2⁻). It has been established that donor-acceptor interactions predominate in PEI-M2+-H2Sal/H3Ssal ternary systems, while electrostatic interactions dominate in PEI-Zn2+/Cd2+-H2Sal and PEI-Be2+-H2edta2⁻ systems. In sorption tests in model solutions, the ternary complexes PEI-Be2+-H3Ssal and PEI-Hg2+-H3Ssal demonstrated the highest efficiency: the degree of removal of Be2+ reached 97.1%, Hg2+ – 93.4%, while for Mg2+ and Ba2+ it was less than 70%. Modified PEI with H3sal proved to be the most effective adsorbent among those studied. In industrial trials, the developed adsorbents reduced the concentrations of Be2+ and Hg2+ in wastewater to 0.004 and 0.002 mg/l, respectively, which meets the maximum permissible concentrations for discharge into water bodies Polyethylenimine ; Extraction (chemistry) ; Wastewater ; Metal ions in aqueous solution ; Chemistry ; Metal ; Group (periodic table) ; Ion ; Environmental chemistry ; Inorganic chemistry ; Chromatography ; Organic chemistry ; Environmental science ; Environmental engineering ; Biochemistry Polymer Synthesis and Characterization
Authors: Salah H. R. Ali
Source: Oriental Journal of Physical Sciences (article, 2025-12-30)
Field: Materials Science — Materials Chemistry

From Precision Engineering and Quantum Geometry to Attosecond: A Promising Future in Electronics Industries Applied research and scientific discoveries have played a crucial role in advancing societies and improving the people's quality of life throughout the ages, especially when focusing on the physical properties of materials to achieve a leap in the electronics industry for economic prosperity. Electronics technology is now the driving force behind industrial progress in all aspects of life around the world. This editorial explores in depth the most important features of the development and discoveries of optics and engineering physics over time, including the scientific leap achieved during the last three years, from precision engineering and quantum geometry to the discovery of the Attosecond to observe and tracking electron motion, with the aim of understanding more about the superconductivity of materials. This enables us to maximize efforts and remain optimistic about a promising future for the electronics industry, extending to all engineering industries, to achieve progress and flourish economic for the benefit of all humanity. Electronics ; Quality (philosophy) ; Attosecond ; Quantum optics ; Scientific discovery ; Scientific instrument Chemical and Physical Properties of Materials ; Electronic and Structural Properties of Oxides ; Technology Assessment and Management
Authors: Lingling Huang | Yanyan Gong | Zhijian J. Chen | Yan-Jun Tan | Qian Gao | Yilei Wang | Yuyu Gao | Wanting Cheng | Weiyuan Liang | Xiaoli Yang
Source: Frontiers in Bioengineering and Biotechnology (article, 2025-09-05)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Regulating the size of antimony nanoparticles to enhance the photo-response in the near-infrared region and anti-hepatoma cell activity The fabricated Sb-PDA exhibits synergistic PTT/PDT potential, though its <i>in vivo</i> efficacy and mechanisms warrant deeper investigation. LSPR-induced Sb-based nanomedicine may unlock diverse biomedical applications of semimetals. Antimony ; Nanoparticle ; Infrared ; Chemistry ; Nanotechnology ; Materials science ; Inorganic chemistry ; Optics ; Physics Gold and Silver Nanoparticles Synthesis and Applications ; Nanoplatforms for cancer theranostics ; Spectroscopy Techniques in Biomedical and Chemical Research
Authors: Monika Fedyna | Bartosz Mozgawa | Joanna Gryboś | Chengyang Yin | Zhen Zhao | Filip Zasada | Piotr Pietrzyk | Zbigniew Sojka
Source: Research on Chemical Intermediates (article, 2025-12-22)
Field: Materials Science — Materials Chemistry

Concurrent processes of N2O/NO2 formation and NH3 oxidation competing with the main course of NH3-SCR over Cu/SSZ-13 and Fe-Cu/SSZ-13 catalysts Abstract The catalytic activity and selectivity of Fe-Cu-SSZ-13 samples prepared by a two-step method, i.e., one-pot synthesis and impregnation or ion exchange were evaluated for NH 3 -SCR with or without H 2 O in the TPSR mode. The catalysts were characterized by XRD, TEM/EDX/EELS, XRF, N 2 -sorption, UV–Vis, EPR and operando IR techniques. Speciation of copper and iron sites in various pretreatment and reaction ( p $${\text{O}}_{2}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mtext>O</mml:mtext> <mml:mn>2</mml:mn> </mml:msub> </mml:math> , p $${\text{H}}_{2}\text{O}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mtext>H</mml:mtext> <mml:mn>2</mml:mn> </mml:msub> <mml:mtext>O</mml:mtext> </mml:mrow> </mml:math> ), and their interaction with NH 3 was examined by DFT and first-principles thermodynamic (FPT) modeling. The SCR versus AMO (ammonia oxidation) competition was examined in the steady-state conditions using 14 NH 3 / 15 NH 3 reactants. The NH 3 -SCR activity, SCR versus AMO trade-off, and N 2 , NO 2 /N 2 O selectivity of the investigated catalysts depend significantly on the method of introducing iron into the zeolite and the dry and wet reaction conditions. The beneficial effect of water was associated with controlling the oxo/hydroxo nature of the dual active sites. The catalysts obtained by impregnation were active in a wider temperature window and exhibited higher selectivity to N 2 , compared to their counterparts obtained by ion exchange. Additionally, the introduction of iron by impregnation to parent Cu-SSZ-13 prepared by the one-pot method allows for attenuation of the concomitant NH 3 oxidation (AMO), and a fivefold reduction in N 2 O production. Catalysis ; Selectivity ; Ammonia ; Zeolite ; Ion exchange ; Copper ; Selective catalytic reduction ; Heterogeneous catalysis Catalytic Processes in Materials Science ; Ammonia Synthesis and Nitrogen Reduction ; Catalysis for Biomass Conversion
Authors: H.S. Sonakshi | H.P. Jayadevappa | M.K. Arpitha | K.M. Vidyashreen
Source: Asian Journal of Chemistry (article, 2025-12-31)
Field: Chemistry — Organic Chemistry

Unveiling the Oxidation Dynamics of Mefenamic Acid by Chloramine-T Using MnO/Ag2O/NiO Nanoparticles Green synthesis of sol-gel method was employed to synthesise MnO/Ag2O/NiO nanoparticles. The synthesised nanoparticle showed an average crystalline size of 20-45 nm with semi-circular crystal structure. A combination of XRD, SEM, EDX and FTIR techniques provided insights into the material’s size, shape and chemical composition. The data reveals the adverse catalytic property of the nanoparticle. The synthesised MnO/Ag2O/NiO (MAN) nanoparticle was used as a catalyst to study the oxidation of mefenamic acid (MFA) by N-chloro-p-toluensulfonamide (CAT) in low pH solution at 298 K. A detailed analysis of the reaction stoichiometry and oxidation products was performed for both nano-catalyzed and non-nano-catalyzed reactions using LC-MS method. The influence of reaction rate on [CAT] is unimolecular, while the proportional to [MFA] is zero-order, for both nano-catalyzed and non-nano-catalyzed reactions. Influence of hydrogen ion concentration on reaction kinetics differs between the non-nanocatalyzed and nano-catalyzed reactions, with an inverse proportionality to a fractional power observed for the former and a non-integer order dependence observed for the latter. The reaction rate is not appreciably affected due to the accumulation of the resulting compound. A negligible negative correlation between the permittivity constant and reaction rate was found for both cases. The independence of the reaction rate on ionic strength implies that non-ionic species play a crucial role in the rate-limiting step. No evidence of free radical intermediates was found and kinetic studies at different temperatures enabled the calculation of thermodynamic parameters. A plausible mechanism was proposed to explain the observed kinetic parameters and rate laws were formulated for both catalyzed and nano-catalyzed reactions. Catalysis ; Nanoparticle ; Reaction rate ; Reaction rate constant ; Stoichiometry ; Mefenamic acid ; Reaction mechanism ; Kinetics ; Order of reaction Inorganic and Organometallic Chemistry ; Vanadium and Halogenation Chemistry ; Oxidative Organic Chemistry Reactions
Authors: S.E. Abo Sawan | Y.M. Hamdy | R.M. Khattab
Source: BMC Chemistry (article, 2025-11-15)
Field: Materials Science — Materials Chemistry

Investigation of the phosphorescence, persistent decay and structure properties of Eu2+: strontium aluminate doped with Nd3+, B3+ or Dy3+ Luminescent sources based on crystalline materials doped with transition metal or rare-earth cations are known as persistent phosphors, and they can continue to emit light even after the excitation source has disappeared. The present study aims to prepare strontium aluminate with varying weight percentages of Eu<sup>2+</sup>, RE<sup>3+</sup> (RE = Dy<sup>3+</sup>, Nd<sup>3+</sup>, or B<sup>3+</sup>) oxides by the solid-state preparation followed by firing under active carbon at 1250 °C.The produced phosphors were examined using FTIR spectroscopy, mechano-luminescent measurement, scanning electron microscopy (SEM), and X-ray diffraction (XRD). A bulk density and apparent porosity measurement was also used to assess the impact of the firing temperature at 1250 °C. Photoluminescence characteristics were examined concerning the kind of trivalent oxides doped in strontium aluminate. The results showed that for samples containing 0.15 weight% of Eu<sub>2</sub>O<sub>3</sub> and 0.15 weight% of RE<sub>2</sub>O<sub>3</sub>, SrAl<sub>2</sub>O<sub>4</sub> formed with Eu<sup>+ 2</sup>, RE<sup>3+</sup> as a single phase. However, RESr<sub>2</sub>AlO<sub>5</sub> was formed together with a minor amount of SrAl<sub>2</sub>O<sub>4</sub> when the Eu<sub>2</sub>O<sub>3</sub> contents decreased at the expense of the RE<sub>2</sub>O<sub>3</sub> contents. Additionally, it was observed that the Eu<sup>3+</sup> was converted into Eu<sup>2+</sup> for every sample. Every sample had porous behavior, and the bulk density was increased by the inclusion of RESr<sub>2</sub>AlO<sub>5</sub> in addition to SrAl<sub>2</sub>O<sub>4</sub>. Transitions from the 4f<sup>6</sup> and 5d<sup>1</sup> configurations of the emission center (Eu<sup>2+</sup> ions) to the 4f<sup>7</sup> configuration result in a broad band at peaks of 517 nm in the emission spectra of all the samples. Samples containing RESr<sub>2</sub>AlO<sub>5</sub> exhibit high phosphor color characteristics, forming red-orange phosphors encircled by green phosphor rings. Compared to samples containing Nd<sub>2</sub>O<sub>3</sub> and B<sub>2</sub>O<sub>3</sub>, those containing Dy<sub>2</sub>O<sub>3</sub> phosphor have the highest decay time values. Phosphor ; Photoluminescence ; Analytical Chemistry (journal) ; Strontium ; Doping ; Luminescence ; Aluminate ; Scanning electron microscope ; Strontium carbonate Luminescence Properties of Advanced Materials ; Microwave Dielectric Ceramics Synthesis ; Magnesium Oxide Properties and Applications