jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Marco Giustra | Brian Novati | Linda Barbieri | Marta Aranda Palomer | Filippo Testa | Lucia Salvioni | Stefania Garbujo | Fabio Corsi | Miriam Colombo | Carlo Morasso | Davide Prosperi
Source: Advanced Optical Materials (article, 2025-09-25)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Dual‐Modality Detection of Intracellular Nanoparticles via Smart Polymer‐Enhanced SERS and Hyperspectral Microscopy Detection Abstract Polymers are widely employed as surface coatings in nanotechnology to enhance the colloidal stability and solubility of nanoparticles (NPs). The choice of coating material is critical, as it influences the surface chemistry and potential applications of nanoparticles. In this study, a novel multidentate surfactant – 4‐mercaptoaniline‐methoxypolyoxyethyleneamine‐grafted‐poly(isobutylene‐ alt ‐maleic anhydride) (PAP) is developed – based on poly(isobutylene‐alt‐maleic anhydride) backbone with high affinity for metallic surfaces. This coating improves NP stability in aqueous solution by displacing excess surfactants – an often overlooked issue in nanomedicine affecting functionalization, cell viability, and molecular targeting in nanomedicine. Beyond stabilization, this multibranched surfactant exhibits an intrinsic ability to enhance Surface‐Enhanced Raman Scattering (SERS), making it a promising tool for biosensing and biomedical applications. These findings show that the SERS performance of nanoparticles coated with PAP is strongly dependent on key structural parameters, including their composition, size, morphology, and the excitation laser wavelength. Notably, concave cube gold nanoparticles exhibit superior SERS performance at 785 nm, highlighting their potential as theranostic agents. Furthermore, tracked NP internalization is successfully tracked in cancer cells by both hyperspectral and SERS microscopy, enabling precise detection of spherical gold NPs. These findings underscore the potential of the coating in advancing biosensing and nanomedicine. Nanomedicine ; Nanoparticle ; Coating ; Biosensor ; Colloidal gold ; Polymer ; Raman scattering ; Surface plasmon resonance Gold and Silver Nanoparticles Synthesis and Applications ; Advanced Nanomaterials in Catalysis ; Spectroscopy Techniques in Biomedical and Chemical Research
Authors: Narayan M. Narkhede | V.S. Baviskar | S.R. Gosavi | Deepashri Prakash Ahirrao | P.B. Ahirrao
Source: Asian Journal of Chemistry (article, 2025-12-31)
Field: Materials Science — Materials Chemistry

Synthesis of ZnSe Thin Films for Advanced Photodetector Applications: Impact of Deposition Time on Structural, Optical and Photoresponse Properties The present work investigates the simple and inexpensive chemical route for the fabrication of zinc selenide (ZnSe) nanocrystalline thin film for photosensing application. This study involved the systematic study of optical, structural, surface morphological characteristics as well as electron kinetics of the proposed ZnSe thin films with respect to the deposition time. The comprehensive analysis clearly revealed the formation of polycrystalline ZnSe thin film with enhancing the absorption of light in the visible region with respect to deposition time. Furthermore, the potential of the as-deposited ZnSe nanocrystalline thin film utilized for the photodetection in the visible region of the solar spectrum. The photodetection performance of the device was thoroughly analyzed through J-V characteristics, which clearly demonstrated that the performance of device is significantly influenced by the deposition time during chemical bath deposition. Optical analysis yielded similar results, with optical parameters such as optical conductivity and extinction coefficient exhibiting comparable trends. Remarkably, the device deposited for 3 h showed excellent photodetection performance, achieving detectivity and sensitivity value of 4.72 × 1011 Jones and 9.12, respectively. Photodetection ; Thin film ; Chemical bath deposition ; Nanocrystalline material ; Zinc selenide ; Photodetector ; Deposition (geology) ; Fabrication ; Selenide Quantum Dots Synthesis And Properties ; Chalcogenide Semiconductor Thin Films ; Chemical and Physical Properties of Materials
Authors: Ayush Madan | Rajiv Dutta
Source: PLANT ARCHIVES (article, 2025-10-22)
Field: Materials Science — Materials Chemistry

BIOGENIC SYNTHESIS OF SILVER NANOPARTICLES USING ELAEOCARPUS GANITRUS EXTRACT: KINETIC ANALYSIS, ANTIMICROBIAL ACTIVITY, AND CYTOGENETIC ASSESSMENT The green synthesis of silver nanoparticles (AgNPs) using plant-based resources has gained significant attention as a sustainable alternative to conventional chemical approaches. In the present study, AgNPs were successfully synthesized using the aqueous leaf extract of Elaeocarpus ganitrus (Rudraksha) through a controlled biogenic route, followed by systematic optimization, kinetic evaluation, comprehensive physicochemical characterization, and biological assessment. Nanoparticle formation was optimized by varying pH, precursor concentration, and extract-to-precursor ratio, with optimal synthesis achieved at pH 9.0, a 1:9 extract-to-AgNO3 ratio, and AgNO3 concentrations of 500–1000 µM. Under these conditions, stable colloidal AgNPs exhibited a characteristic surface plasmon resonance peak at approximately 420 nm. Kinetic analysis revealed enzyme-like saturation behavior with a Michaelis constant (Km) of 0.42 mM and a maximum reaction velocity (Vmax) of 0.091 Abs/min, indicating efficient Ag+ reduction by Rudraksha-derived phytochemicals. Transmission and scanning electron microscopy confirmed the formation of predominantly spherical nanoparticles with a narrow size distribution ranging from 17.7 to 27.7 nm. Fourier-transform infrared spectroscopy and X-ray photoelectron spectroscopy demonstrated the involvement of polyphenolic and flavonoid functional groups in nanoparticle reduction and stabilization, confirming the presence of metallic silver capped by plant biomolecules. Biologically, the synthesized AgNPs exhibited strong, dose-dependent antibacterial activity, reducing bacterial survival to approximately 20% at higher concentrations, and significant antifungal efficacy against Aspergillus niger, with fungal growth reduced to nearly 30%. Cytotoxicity and cytogenetic evaluations using human white blood cells revealed moderate, concentration-dependent reductions in cell viability and a decline in mitotic index from 6.0% in controls to 1.1% at higher nanoparticle exposure. This study highlights Elaeocarpus ganitrus leaf–mediated AgNPs as potent antimicrobial nanomaterials with clearly defined biosafety thresholds. Silver nanoparticle ; Nanoparticle ; Surface plasmon resonance ; Polyphenol ; Antimicrobial ; Silver nitrate ; Aqueous solution ; Antibacterial activity ; Aspergillus niger Nanoparticles: synthesis and applications ; Coagulation and Flocculation Studies ; Graphene and Nanomaterials Applications
Authors: Людмила Іванівна Кучеренко | Б. С. Бурлака | Сергій Олександрович Борсук | Олексій Антонович Бігдан | В. В. Парченко | Дмитро Юрійович Скорина | Іван Володимирович Павлюк
Source: The Scientific Issues of Ternopil Volodymyr Hnatiuk National Pedagogical University Series pedagogy (article, 2025-12-30)
Field: Materials Science — Polymers and Plastics

Вивчення термогравіметричного профілю суміші диклофенаку натрію та пара-амінобензойної кислоти як основа для фармацевтичної розробки In modern conditions, in particular, against the background of an increase in the frequency of traumatic injuries to the organs of vision because of hostilities and the influence of professional factors, the development of new ophthalmic dosage forms is of particular relevance. Combined drugs containing several active pharmaceutical ingredients, in particular diclofenac sodium and para-aminobenzoic acid, are considered promising solutions for the treatment of infectious and inflammatory eye lesions. At the same time, the effectiveness and safety of such combinations directly depend on their physicochemical compatibility, which determines the stability of the finished dosage form. The aim of the study is to investigate the thermal stability and possible physicochemical interactions between diclofenac sodium and para-aminobenzoic acid by derivatographic analysis of individual substances and their mixture in a 1:1 ratio. Materials and methods. The objects of the study were the pharmaceutical substances diclofenac sodium, para-aminobenzoic acid and a model mixture of the specified active pharmaceutical ingredients. Thermogravimetric analysis was carried out on a Shimadzu DTG-60 device in thermogravimetric analysis and differential thermal analysis modes in the temperature range of 17–250 °C with a heating rate of 10 °C/min in an air atmosphere. Results. In the process of thermogravimetric research, it was established that diclofenac sodium is characterized by high thermal stability. Para-aminobenzoic acid showed three stages of thermal destruction, but analysis of the mixture in a 1:1 ratio did not reveal the appearance of new thermal effects or shifts in the degradation profiles. Conclusions. The results of thermogravimetric analysis indicate the compatibility of diclofenac sodium and para-aminobenzoic acid in terms of thermal characteristics, which confirms the prospects of their simultaneous use Thermogravimetric analysis ; Diclofenac Sodium ; Diclofenac ; Dosage form ; Thermal stability ; Thermal analysis Polymer Synthesis and Characterization ; Analytical Methods in Pharmaceuticals ; Drug-Induced Hepatotoxicity and Protection
Authors: Hon Nhien Le | Duy Khanh Nguyen | Minh Triết Đặng | Hung T. Nguyen | Thi Bang Tam Dao | Trung Do Nguyen | Chi Nhan Ha Thuc | Lê Văn Hiếu
Source:  (preprint, 2025-01-21)
Field: Chemistry — Organic Chemistry

Supramolecular hydration structure of graphene-based hydrogels: density functional theory, green chemistry and interface application Natural hydration shells are discovered to play an essential role in the structure and function of biomolecules (deoxyribonucleic acid, protein and phospholipid membrane). Hydration layers are also important to the structure and property of artificial graphene-based materials. Our recent researches prove that graphene-based hydrogels are supramolecular hydration structures that preserve graphene nanosheets from irreversible stacking via van der Waals forces and π-π interactions. In this manuscript, density functional theory (DFT) and high performance computing (HPC) are used for modeling and calculating van der Waals force between graphene nanosheets in water-intercalated AB bilayer graphene structures. A layer of water molecules significantly decreases the intersheet van der Waals force. Experimentally, a novel hydrogel of graphene oxide – silica gel – zinc hydroxide (GO-SG-ZH) is synthesized to demonstrate the advantages of hydrated hydrogel structure in comparison with dry powder structure. The synthesis of graphene-based hydrogels is a green chemistry approach to attain extraordinary properties of graphene-based nanostructures. Hydration forces in the hydrogel prevent van der Waals stacking and graphene agglomeration. Analytical characterizations exhibited moisture contents, three-dimensional structures, elemental compositions, functional groups and antibacterial activities. Non-stacking state of graphene-based nanosheets in GO-SG-ZH hydrogel was suitable for direct brush painting on polymer substrates, typically polylactide films. GO-SG-ZH coating on polylactide film was antibacterial and stable in aqueous food simulants for one month. In general, supramolecular graphene-based hydrogels are bioinspired hydration structures to advance nanoscale properties and nanotechnology applications. Graphene ; Supramolecular chemistry ; Interface (matter) ; Self-healing hydrogels ; Density functional theory ; Nanotechnology ; Chemistry ; Materials science ; Computational chemistry ; Polymer chemistry ; Molecule ; Organic chemistry Nanomaterials for catalytic reactions ; Supramolecular Self-Assembly in Materials
Authors: Liu Xie | Yanwen Zhou | Wenjing Luo | Jin Zhang | Dai‐Xu Wei
Source: Journal of Polymer Science (article, 2025-08-24)
Field: Materials Science — Biomaterials

<scp>AcD</scp> : A Novel Bioactive Polymer Scaffold of Adipose‐Derived Stem Cells Combining With Decellularized Extracellular Matrix in Tissue Engineering ABSTRACT Tissue defects are often caused by severe trauma, surgical tumor resection, or chronic pathological conditions. Traditional autologous or allogeneic transplantation strategies are constrained by limitations including infection risk, postoperative complications, and immune rejection. Therefore, there is an urgent need for safer and more efficacious alternative strategies for tissue repair. In recent years, advancements in tissue engineering have introduced novel avenues for tissue regeneration. Decellularized extracellular matrix (dECM) is composed of a variety of naturally occurring polymers (collagen, elastin, glycosaminoglycans) that are highly biocompatible and tissue specific, and is considered to be a bioactive polymer scaffold. However, dECM still faces several application challenges, including limited cellular activity, delayed angiogenesis, and potential immunogenicity. Adipose‐derived stem cells (ADSCs) possess multipotent differentiation capacity, paracrine signaling abilities, and immunomodulatory functions. In combination with dECM, they contribute to the fabrication of a novel bioactive tissue engineering polymer scaffold (AcD), which enhances both the biological activity and mechanical stability of the scaffold, while further promoting angiogenesis, tissue integration, and functional regeneration through modulation of the local microenvironment. This review examines the biological advantages of AcD scaffolds in tissue repair, provides a systematic summary of the current research advancements in the application of these scaffolds across various tissue types, including adipose, bone, cartilage, myocardial, neural, skin, skeletal muscle, and bladder tissue, and explores future perspectives and potential directions for their development within the context of tissue engineering and regenerative medicine. Decellularization ; Extracellular matrix ; Adipose tissue ; Scaffold ; Tissue engineering ; Stem cell ; Matrix (chemical analysis) ; Biomedical engineering ; Chemistry ; Cell biology ; Materials science ; Biophysics ; Biochemistry ; Biology ; Engineering ; Chromatography Electrospun Nanofibers in Biomedical Applications ; Tissue Engineering and Regenerative Medicine ; 3D Printing in Biomedical Research
Authors: Jan Mertens | Christian Breyer | Ronnie Belmans | Corinne Gendron | Patrice Geoffron | Carolyn Fischer | Elodie Du Fornel | Olivier Ledent | Richard K. Lester | Kimberly A. Nicholas | Laura Megrelis | P. Miranda | C. Paton | Alice Prudhomme | Peter Verwee | Olivier Sala | Michael E. Webber | Koenraad Debackere
Source: iScience (article, 2025-10-18)
Field: Chemistry — Physical and Theoretical Chemistry

How energy and chemistry converge for a fossil-free future The chemical industry must undergo a dual transformation: electrifying energy use and defossilizing carbon feedstocks. This paper, developed by ENGIEs Scientific Council, examines how energy and chemistry can converge to enable this shift. We assess the roles of biomass, recycled plastics, and CO<sub>2</sub> as sustainable carbon sources and explore the enabling potential of electrification, low-carbon hydrogen, and direct air capture. Novel process pathways and infrastructure scenarios are analyzed to highlight strategic opportunities for cross-sectoral collaboration. Our findings underscore the need for coordinated investment, policy support, and alignment with renewable energy geography to achieve a resilient, fossil-free future. Renewable energy ; Process (computing) ; Sustainable energy ; Energy (signal processing) ; Carbon fibers ; Dual (grammatical number) ; Sustainable development ; Green chemistry Various Chemistry Research Topics ; Chemistry and Chemical Engineering
Authors: Asad Ullah | Muhammad Atiq | Azeem Akram | Owais Iqbal | Muhammad Usman | Akhtar Hameed | Muhammad Wahab | Ahmad Nawaz | Ahmad Irfan | Qurban Ali | Nasir Ahmed Rajput
Source: Research Square (preprint, 2025-11-06)
Field: Materials Science — Materials Chemistry

Multimodal Impact of Bacillus subtilis-derived Zinc oxide and Copper Oxide Nanoparticles on Citrus Biochemistry, Horticultural Attributes and Greening Disease Management Zinc ; Nanoparticle ; Greening ; Surface plasmon resonance ; Zeta potential ; Copper ; Vitamin C Nanoparticles: synthesis and applications ; Nanocomposite Films for Food Packaging ; Polymer-Based Agricultural Enhancements
Authors: Wan Zulhafizhazuan | Shafidah Shafian | Suhaila Sepeai | Mohd Adib Ibrahim
Source: Journal of Materials Science Materials in Electronics (article, 2025-07-01)
Field: Materials Science — Materials Chemistry

Mapping the thermal processing window for optoelectronic-grade Cs₃Bi₂I₉ thin films fabricated via flow reactor synthesis The influence of mixing temperature in a microreactor (70–150 °C) on the crystallinity, surface morphology, and local conductivity of Cs₃Bi₂I₉ thin films was systematically investigated using X-ray diffraction (XRD), atomic force microscopy (AFM), and conductive AFM (C-AFM). XRD analysis confirmed the formation of the Cs₃Bi₂I₉ phase in all samples, with increasing mixing temperature leading to sharper diffraction peaks, indicating enhanced crystallinity and larger crystallite size. The Scherrer equation revealed a progressive increase in crystallite size, suggesting improved long-range ordering at higher processing temperatures. In contrast, AFM measurements demonstrated a reduction in surface grain size from ~ 1.6 µm (70 °C) to ~ 0.3 µm (150 °C), accompanied by non-monotonic changes in surface roughness. Optimal mixing at 110 °C yielded the smoothest morphology (RMS ~ 43 nm, Rpv ~ 250 nm), indicative of grain coalescence and densification. However, further heating to 150 °C in the microreactor induced surface instability, increasing roughness (RMS ~ 54 nm, Rpv ~ 700 nm), likely due to thermal stress or iodide volatilization. C-AFM analysis revealed a strong correlation between grain structure and local conductivity. At 90 °C, current maxima aligned with grain peaks, suggesting efficient charge transport. In contrast, films processed at 150 °C exhibited disrupted conduction pathways, with minimal height–current correlation, indicating electronic degradation. The 110 °C sample displayed uniform conductivity, consistent with its compact morphology. These findings highlight 110 °C as the optimal mixing temperature in the microreactor, balancing crystallinity, surface smoothness, and electrical performance, while higher temperatures induce structural and functional deterioration. This study provides critical insights for optimizing Cs₃Bi₂I₉ films for optoelectronic applications. Materials science ; Window (computing) ; Optoelectronics ; Thin film ; Thermal ; Rapid thermal processing ; Flow (mathematics) ; Nanotechnology ; Computer science Phase-change materials and chalcogenides ; Thin-Film Transistor Technologies ; Semiconductor materials and devices
Authors: Hussein Alrobei
Source: Journal of King Saud University - Science (article, 2025-10-31)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Environmentally friendly BiFeO <sub>3</sub> -based piezoceramics: Processing, optimization, and electromechanical properties for high-temperature applications High-temperature piezoelectrics are indispensable parts of modern technology. In this work, a new 0.7Bi 1.03 FeO₃-0.3Ba 0.99 La 0.01 TiO₃ lead-free piezoceramic material was created near the morphotrophic phase boundary (MPB), and its electromechanical properties were tuned by sintering temperature ( T s ). The optimized T s of 970°C resulted in a completely dense microstructure with a large average grain-size of 5 µm and a significant remnant polarization of ( P r ) 30.2 μC/cm 2 . The alternating current (AC) and direct current (DC) poling method resulted in a fairly high static piezoelectric constant ( d 33 ) of 344 pC/N. A large dynamic piezoelectric constant ( d 33 * ) of 450 pm/V is achieved under the 50 kV/cm with decent thermal stability. High Curie temperature ( T C ) of 530°C and low dielectric losses throughout a wide range are advantageous for high-temperature applications. The simultaneous enhancement of d 33 , d 33 * , and T C is a promising finding in lead-free piezoceramic materials. Piezoelectricity ; Poling ; Curie temperature ; Dielectric ; Microstructure ; Phase boundary ; Environmentally friendly ; Polarization (electrochemistry) ; Sintering Multiferroics and related materials ; Ferroelectric and Piezoelectric Materials ; Advanced Sensor and Energy Harvesting Materials
Authors: Boyu Qiu | Xinlei Wei | Chun You
Source: ChemBioChem (article, 2025-07-02)
Field: Materials Science — Biomaterials

Efficient Biosynthesis of Polyhydroxybutyrate from Xylose via an In Vitro Synthetic Enzymatic Biosystem with Self‐Sustained Cofactor Regeneration In vitro biotransformation mediated by in vitro synthetic enzymatic biosystems (ivSEBs) represents a highly promising platform for sustainable biomanufacturing, offering enhanced reaction efficiency by circumventing cellular constraints. This study develops an ivSEB comprising 17 enzymes for the cell-free biosynthesis of polyhydroxybutyrate (PHB) from D-xylose via acetyl-coenzyme A (CoA). This ivSEB integrates partial glycolysis and the pentose phosphate pathway, enabling self-sustained balance of several cofactors including CoA, NADP<sup>+</sup>/NADPH, and ATP/ADP. Stoichiometric analysis demonstrates a theoretical molar yield of PHB from xylose of 111.1%. Through optimizing concentrations of cofactors and enzymes, the one-pot reaction produces 44.0 mM (3.8 g L<sup>-</sup> <sup>1</sup>) PHB from 44.8 mM (6.7 g L<sup>-1</sup>) xylose, corresponding to a molar yield of 98.2%. Even at a higher substrate concentration (13.5 g L<sup>-1</sup>), this yield (84.5%) remains robust. This study demonstrates the potential of the ivSEB as a scalable and efficient approach for the large-scale production of PHB and other xylose-based or acetyl-CoA-derived chemicals. Polyhydroxybutyrate ; Cofactor ; Xylose ; Metabolic engineering ; Biochemistry ; Chemistry ; Biosynthesis ; Enzyme ; Xylose metabolism ; Pentose phosphate pathway ; Yield (engineering) ; Biotransformation ; Glycolysis ; Biology ; Fermentation ; Materials science biodegradable polymer synthesis and properties ; Enzyme Catalysis and Immobilization ; Microbial Metabolic Engineering and Bioproduction
Authors: Clément Maheu | Vincent Vandalon | Miika Mattinen | Thomas Mayer | Ageeth A. Bol | Jan P. Hofmann
Source: ACS Applied Nano Materials (article, 2025-05-07)
Field: Materials Science — Materials Chemistry

p-Type Al-Doped MoS<sub>2</sub> Nanosheet Films: Electronic and Chemical Interface Properties with Gold for Electronic Device Integration High-performance optoelectronic devices based on two-dimensional transition-metal dichalcogenides require precise control of the intrinsic and interfacial properties with metallic contacts. We studied aluminum doping and its effect on the chemical and electronic properties of MoS2 nanosheet films prepared by plasma-enhanced atomic layer deposition (ALD). We combined photoelectron (XPS/UPS) and UV–vis absorption spectroscopies, revealing that Al introduction decreases the Fermi level-to-valence band energy difference of MoS2 from 0.61 to 0.04 eV and suppresses Au sputtering damage. Stepwise Au sputtering on MoS2 films reveals chemical modifications in the undoped nanosheets, whereas Al doping stabilizes the material, preventing such an alteration. These findings highlight the potential of Al doping not only for precise control of electronic properties but also for improving the chemical stability of MoS2 nanosheets, making them more suitable for advanced optoelectronic applications. Nanosheet ; Materials science ; Doping ; Interface (matter) ; Electronic materials ; Optoelectronics ; Nanotechnology ; Composite material 2D Materials and Applications ; MXene and MAX Phase Materials ; Electrocatalysts for Energy Conversion