jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Amro Sweedan | Kefan Zhang | Muhammad Y. Bashouti | Thorsten Feichtner
Source: ArXiv.org (preprint, 2025-11-03)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Large-Area Atomically Flat Monocrystalline Gold Flakes: Recent Advances, Applications, and Future Potential High aspect ratio oblate polygonal gold crystals - such as triangular and hexagonal platelets - have attracted considerable interest due to their extraordinary physical, chemical, and mechanical properties. Commonly referred to as "gold flakes," these structures exhibit atomically flat surfaces, $μ$m$^2$ areas with nanometric thickness, and a monocrystalline morphology. Since their first discovery by John Turkevich in 1951, considerable progress has been made in shape-controlled synthesis and large-scale production, unlocking steadily new opportunities for ever more advanced applications. This review explores large-area gold flakes with lateral dimensions spanning from hundreds of nanometers to millimeters, emphasizing their unique properties. We provide a comprehensive overview of key developments, from early discoveries, synthesis approaches, and fabrication techniques to recent breakthroughs. Emphasis is placed on the integration of gold flake as functional building blocks in photonics (e.g., for nanoantennas), sensing, nanoelectronics, biomedicine, and beyond. We conclude with a discussion of emerging roles and future developments of this unique class of materials. Monocrystalline silicon ; Fabrication ; Nanometre ; Hexagonal crystal system ; Photonics ; Nanoelectronics ; Nanolithography Gold and Silver Nanoparticles Synthesis and Applications ; Nanoporous metals and alloys ; Nanocluster Synthesis and Applications
Authors: Eleftheria Roumeli | Samantha L. Kristufek
Source: Materials Advances (article, 2025-01-01)
Field: Materials Science — Biomaterials

Introduction to advancements in synthesis of high-performance materials from Nature’s building blocks Eleftheria Roumeli and Samantha L. Kristufek introduce the Materials Advances themed collection on advancements in high-performance sustainable polymers: from bio-derived monomers to dynamic materials. Nanotechnology ; Materials science ; Computer science biodegradable polymer synthesis and properties
Authors: Omar K. Farha | Xianhui Tang | Xiaoliang Wang | Zi‐Ming Ye | Shiun-Lian Su | Julian S. Magdalenski | Bang Hou | T. Li | Kent O. Kirlikovali | Nathan C. Gianneschi | Haomiao Xie
Source: Research Square (preprint, 2025-12-01)
Field: Chemistry — Inorganic Chemistry

Programming Local Confinements in Crystalline Frameworks through Reticular Chemistry Linker ; Topology (electrical circuits) ; Bridging (networking) ; Rational design ; Leverage (statistics) ; Protonation ; Network topology ; Reticular connective tissue ; Molecular switch ; Catalysis Metal-Organic Frameworks: Synthesis and Applications ; Covalent Organic Framework Applications ; Supramolecular Chemistry and Complexes
Authors: Ceren Can Karanlık
Source: Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi (article, 2025-12-25)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Synthesis, Structural and Mesomorphic Characterization of New Three-Ring Chalcone-Imine Derivatives with Polar End Groups In this study, new chalcone-imine derivatives composed of three-benzene-ring central unit containing n-dodecyloxy group at one end and cyano or bromo group at other end have been synthesized. Chemical structures of the obtained derivatives have been clarified by spectral analyses (1H-, 13C/APT-NMR and FT-IR). The mesomorphic behaviour and optical textures of the derivatives have been observed by differential scanning calorimetry (DSC) and polarized optical microscopy (POM). It was determined that cyano-terminated chalcone-imine derivative (3a) exhibits enantiotropic SmA mesophase, characterized by thermal range of 19 ˚C and also a M mesophase, while bromo-terminated chalcone-imine derivative (3b) does not show any mesomorphic behaviour. This result emphasizes that the type and the nature of the polar end group has a huge impact on the liquid crystalline properties of the molecules. Differential scanning calorimetry ; Polar ; Group (periodic table) ; Derivative (finance) ; Characterization (materials science) ; Polarized light microscopy Liquid Crystal Research Advancements ; Synthesis and properties of polymers ; Lipid Membrane Structure and Behavior
Authors: Jinhua Tong | Hui Sun
Source: Small (article, 2025-12-30)
Field: Materials Science — Materials Chemistry

Polymeric Bottle‐Shaped Nanoparticles With Controlled Cavity and Neck Bottle-shaped nanoparticles, comprising a long neck and a large single interior cavity, have been drawing extensive attention due to their unique structural characteristics, exhibiting significant potential in catalysis, drug delivery and nanomotors. In this study, a polymer self-assembly strategy is proposed to prepare bottle-shaped nanoparticles with controlled cavity and neck dimensions based on a triphenylamine-functionalized amphiphilic alternating copolymer of poly(amic acid) (PAA). By adjusting the initial concentration and water dropping rate during self-assembly, the cavity diameter and neck length of the bottle-shaped nanoparticles can be well controlled. Once the PAA is annealed at 160, 180 and 220°C, respectively, hydrophobic and rigid polyimide segments are generated in the backbone of the polymer, leading to a shape transformation from bottle-shaped nanoparticles to porous capsules and pod-shaped nanoparticles, as well as a significant red shift and enhancement of the fluorescence. Exploring the formation mechanism of bottle-shaped nanoparticles, a protrusion is formed at the early stage of the self-assembly due to the build-up of osmotic pressure, which extends with the addition of water to afford bottle-shaped nanoparticles. Overall, the controlled preparation of bottle-shaped nanoparticles with adjustable cavity and neck is achieved, opening up new avenues for the controlled construction of highly anisotropic nanostructures. Nanoparticle ; Polyimide ; Polymer ; Amphiphile ; Drug delivery ; Porosity Pickering emulsions and particle stabilization ; Block Copolymer Self-Assembly ; Advanced Polymer Synthesis and Characterization
Authors: Selahattin Erdoğan
Source: Research Square (preprint, 2025-05-09)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Design and In-Depth Characterization of Liquid Crystalline Polyesters for Lower Melting Points and Wider Processing Windows Thermotropic crystal ; Materials science ; Liquid crystal ; Polyester ; Differential scanning calorimetry ; Crystallinity ; Thermogravimetric analysis ; Melting point ; Polymer ; Characterization (materials science) ; Thermal stability ; Ultimate tensile strength ; Composite material ; Phase (matter) ; Chemical engineering ; Polymer chemistry ; Organic chemistry ; Nanotechnology ; Liquid crystalline ; Chemistry ; Thermodynamics Liquid Crystal Research Advancements
Authors: Xingran Yang | Jiahang Li | Jinbo Zhao
Source: Asian Journal of Organic Chemistry (article, 2025-04-09)
Field: Chemistry — Organic Chemistry

Access to Fully Substituted Furans via Boryl Radical Catalyzed Cycloisomerization of Cyclopropenyl Ketones Abstract We report the boryl radical catalyzed cycloisomerization of cyclopropenyl ketones to fully‐substituted furans, a type of highly important pharmacophore and synthetic intermediate. The reaction features neutral conditions, high yields, and toleration of variation at all possible positions of the substrate, making it an indispensable route for this type of important scaffold. Preliminary downstream transformation also revealed the synthetic potential of these furans in accessing other types of furans or more complex 3D scaffolds. Cycloisomerization ; Chemistry ; Catalysis ; Medicinal chemistry ; Organic chemistry ; Photochemistry Cyclopropane Reaction Mechanisms ; Catalytic Alkyne Reactions ; Catalytic C–H Functionalization Methods
Authors: Manman Jin | W.-L. Yu | Xinyao Xu | Shuxiang Meng | Qingtao Niu
Source: Applied Organometallic Chemistry (article, 2025-05-12)
Field: Materials Science — Materials Chemistry

Bimetallic MOF@amino‐Functionalized SBA‐15 Robust Nanoreactor for H<sub>2</sub>O‐Oil Biphase Cyclopentene Oxidation ABSTRACT In this study, a novel bimetallic metal–organic framework (MOF) CoMo‐ZIF‐based nanocomposite (i.e., POM@CoMo‐ZIF@APT‐SBA‐15) containing three active species (W/Co/Mo) was fabricated via a facile in situ self‐assembly strategy utilizing amino‐functionalized mesoporous silica SBA‐15 (APT‐SBA‐15, APT = 3‐aminopropyltriethoxysilane) as the dual‐purpose enhancer (i.e., boosting specific surface area and providing anchor points for [PW 12 O 40 ] 3− ). Characterization analyses confirms that APT‐SBA‐15 can boost the specific surface area (138 m 2 ⋅g −1 → 258 m 2 ⋅g −1 ) and pore volume (0.36 cm 3 ⋅g −1 → 0.72 cm 3 ⋅g −1 ) of CoMo‐ZIF, provide anchor points for phosphotungstic acid (POM) anion [PW 12 O 40 ] 3− , and also induce the nucleation of CoMo‐ZIF directionally and regulate the growth of nanocrystals, transforming CoMo‐ZIF morphology from rose‐type hollow nanocages to rambutan‐shaped spheres. Notably, POM@CoMo‐ZIF@APT‐SBA‐15 demonstrated superior catalytic stability in a unique tandem cyclopentene oxidation reaction compared to its nonamino‐modified counterpart. This superior performance underscores the proposed synergistic catalysis mechanism involving W Co, and Mo. Our findings present a promising strategy for purposeful design and synthesis of MOF‐derived materials with high efficiency for various olefins oxidation processes. Chemistry ; Cyclopentene ; Nanoreactor ; Bimetallic strip ; Organic chemistry ; Polymer chemistry ; Catalysis Mesoporous Materials and Catalysis ; Metal-Organic Frameworks: Synthesis and Applications ; Catalytic Processes in Materials Science
Authors: Leena Bharadwaj
Source: Chemical Reports (article, 2025-09-05)
Field: Chemistry — Organic Chemistry

Synthetic and Spectroscopic Exploration of Haloindole Carboxaldehydes toward the Design of Bioactive Heterocyclic Architectures The quest for novel bioactive heterocyclic frameworks continues to be a focal point in modern organic and medicinal chemistry. In this context, haloindole carboxaldehydes have emerged as valuable and versatile synthetic intermediates due to their electron-rich indole core, electrophilic aldehyde function, and tunable halogen substituents. This study presents a comprehensive synthetic and spectroscopic investigation of haloindole carboxaldehydes, aiming to harness their reactivity for the rational design and construction of structurally diverse heterocyclic compounds with potential pharmacological relevance. A series of halogenated indole-3-carboxaldehyde derivatives were synthesized via regioselective halogenation, followed by formylation under Vilsmeier–Haack conditions. Their structures were elucidated and confirmed through extensive spectroscopic characterization, including ¹H NMR, ¹³C NMR, FT-IR, UV–Vis, and mass spectrometry. Furthermore, the influence of different halogen atoms (Cl, Br, I) on the reactivity and electronic behavior of the aldehydes was systematically evaluated using electron spin resonance (ESR) and high-performance liquid chromatography (HPLC) analyses. The synthetic utility of these haloindole aldehydes was further demonstrated through their condensation with active methylene and amino compounds, facilitating the formation of fused heterocyclic systems such as β-carbolines, indolylpyrazoles, and oxazoles. Preliminary in silico screening of the resulting scaffolds revealed promising drug-likeness profiles and potential interactions with biological targets, highlighting their value in drug discovery. This work underscores the significance of haloindole carboxaldehydes as multifunctional building blocks for the development of complex molecular architectures with potential applications in therapeutic chemistry. Combinatorial chemistry ; Computer science ; Chemistry ; Nanotechnology ; Computer architecture ; Materials science Synthesis and Reactions of Organic Compounds
Authors: Mustafa Kemal Yıldırım | Emirhan Gencosman | Gulbahar Bozan | Jing Gu | Gregory I. Elliott | Douglas B. Grotjahn | Hüseyin Cem Kılıçlar | Cüneyt H. Ünlü
Source: European Polymer Journal (article, 2025-08-27)
Field: Chemistry — Organic Chemistry

Synthesis of N-Heterocyclic carbene complexes with different substituents to tune the electron density of iron center and their catalytic performance in ICAR-ATRP Carbene ; Catalysis ; Center (category theory) ; Chemistry ; Medicinal chemistry ; Photochemistry ; Materials science ; Polymer chemistry ; Crystallography ; Organic chemistry N-Heterocyclic Carbenes in Organic and Inorganic Chemistry ; Synthetic Organic Chemistry Methods ; Organometallic Complex Synthesis and Catalysis
Authors: Nadia Hammami | Stéphane Patry | Armand Soldera | Bruno Améduri | Jean‐Pierre Habas
Source: Molecules (article, 2025-11-11)
Field: Materials Science — Materials Chemistry

Isosorbide as a Molecular Glass: New Insights into the Physicochemical Behavior of a Biobased Diol This paper presents a study of the thermal and rheological properties of isosorbide, showing that its degradation temperature (around 100 °C) is much lower than values previously proposed in the literature. Furthermore, remarkable calorimetric and viscoelastic behaviors, with features usually observed in semi-crystalline systems are presented. The onset of the melting is measured at 45 °C, while a glass transition occurs at -45 °C, followed by cold crystallization. Wide-angle X-ray diffraction confirmed the coexistence of crystalline domains and an amorphous fraction, which behaves as a molecular glass, with an estimated crystallinity of approximately 70%. Thermogravimetric analyses conducted under both air and nitrogen and at multiple heating rates, in line with ICTAC recommendations, established the robustness of the 100 °C degradation onset. These findings provide new structure-property relationships for isosorbide and open up new avenues for further research and development in this area. Isosorbide ; Crystallinity ; Thermogravimetric analysis ; Glass transition ; Rheology ; Degradation (telecommunications) ; Amorphous solid ; Diol ; Nitrogen Thermal and Kinetic Analysis ; Microencapsulation and Drying Processes ; Flame retardant materials and properties
Authors: Mohadeseh Arabi | S. Panahibakhsh | Maryam Aliannezhadi
Source: Research Square (preprint, 2025-08-26)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Fabrication of a Bimetallic Au–Ag Nanoparticle-Based Photonic Chip via Excimer Laser Irradiation for Water Pollutant Detection and Enhanced Raman Sensing Bimetallic strip ; Raman spectroscopy ; Fabrication ; Materials science ; Nanoparticle ; Excimer laser ; Irradiation ; Photonics ; Pollutant ; Laser ; Chip ; Excimer ; Optoelectronics ; Nanotechnology ; Optics ; Chemistry ; Computer science ; Metallurgy Gold and Silver Nanoparticles Synthesis and Applications ; Plasmonic and Surface Plasmon Research ; Nonlinear Optical Materials Studies
Authors: Davide Zanetti | Sayan Sarkar | El Czar Galleposo | Laurens van Dam | Leticia González | Davide Bonifazi
Source: ChemRxiv (preprint, 2025-09-15)
Field: Chemistry — Organic Chemistry

Modular Synthesis of Polycyclic Aromatic Hydrocarbons Enabled by Electrophotocatalysis We report a modular electrophotocatalytic platform for the construction of polycyclic aromatic hydrocarbons (PAHs) via radical annulations. Using structurally engineered peri-xanthenoxanthene-derived catalysts bearing phosphonium and sulfone groups, we can access highly reducing excited states (down to –3.05 V and –3.44 V vs SCE) by combining electrochemical priming with green-light irradiation. This dual activation enables C(sp²)–C(sp²) and C(sp)–C(sp²) bond formation from otherwise inert aryl halides and alkynes under mild, metal-free conditions. Spectroelectrochemical studies, characterized by theoretical calculations, reveal that the doubly reduced photoexcited species are the key reactive intermediates. The method tolerates diverse functional groups and topologies, affording mono-, bi-, and tri-annulated products as well as cascade and alkyne-driven cycloaromatizations. This work introduces a powerful synthetic blueprint for π-conjugated frameworks, expanding the scope of radical chemistry in PAH synthesis beyond conventional oxidative protocols. Aryl ; Modular design ; Sulfone ; Organic synthesis ; Catalysis ; Halide ; Radical ; Phosphonium ; Reactive intermediate Radical Photochemical Reactions ; Sulfur-Based Synthesis Techniques ; Catalytic C–H Functionalization Methods
Authors: Sonu Prasad | Jyoti Sharma | Gurdeep Sangwan | Avinash Rani
Source:  (article, 2025-12-19)
Field: Chemistry — Organic Chemistry

A COMPREHENSIVE REVIEW FOR CATALYTIC POTENTIAL OF SCHIFF BASE METAL COMPLEXES IN OXIDATION REACTIONS A Schiff base metal complex has emerged as an effective catalyst in oxidation chemistry because of its remarkable structural diversity, tunable electronic stabilization properties, and ability to tolerate multiple oxidation states. This review examines the catalytic potential of Schiff base complexes derived from aldehydes and amines, coordinated with transition metal ions covering the 3d, 4d, and 5d series. Several green oxidants are mentioned, including hydrogen peroxide, tert-butyl hydroperoxide, and molecular oxygen, which are used to promote environmentally benign oxidation processes. In this paper, we discuss the mechanisms underlying these catalytic transformations, emphasizing how ligand architecture, metal centers, and reaction conditions affect catalysis efficiency and selectivity. In this study, we investigated how electronic and steric factors control the redox behavior of mono- and polynuclear complexes. Additionally, this review draws attention to recent developments in heterogeneous and recyclable Schiff metal complexes designed for sustainable oxidation methods. The discussion concludes with a discussion of the challenges and future perspectives associated with developing next-generation Schiff base catalysts that are able to enhance their activity, stability, and compliance with green chemistry requirements. Schiff base ; Catalysis ; Redox ; Steric effects ; Ligand (biochemistry) ; Metal ; Green chemistry ; Transition metal Oxidative Organic Chemistry Reactions ; Vanadium and Halogenation Chemistry ; Metal-Catalyzed Oxygenation Mechanisms
Authors: Ahmed M. Zaidan | Zainab T. Y. Alabdullah | Uhood J. Al-Hamdani
Source: Journal of Kufa for Chemical Sciences (article, 2025-01-06)
Field: Chemistry — Electrochemistry

Schiff base as a Nanosorbent for Eliminating Lead from Contaminated Water Schiff base was first created, and it was subsequently employed as a reducing and capping agent to create silver nanoparticles. Schiff base serves as a capping to stop silver oxide from overgrowing. Schiff base provides silver nanoparticles a new form, producing them in a distinctive manner. Spectral information from the1H nuclear magnetic resonance, mass spectra, were used to analyze the structure of schiff base. UV-Vis Spectroscopy was used to characterize the structure of silver nanoparticles in order to track how the surface plasmon band that emerges at (433.5) nm affects the formation of silver nanoparticles. In order to analyze the morphology of silver nanoparticles, scanning electron microscopy (SEM) was performed. In the image, silver nanoparticles with sizes between 50 and 100 nm have spherical shapes. Energy dispersive x-ray spectroscopy EDX was also employed the spectra shows silver at 49.4% in the specimen. Dynamic light scattering (DLS) prove that prepared silver nanoparticles in nano size. The prepared sample schiff base coated nanoparticles was applied for adsorption lead from polluted water and the percentage of adsorption was 74.34. Contamination ; Schiff base ; Lead (geology) ; Water contamination ; Environmental science ; Base (topology) ; Chemistry ; Computer science ; Polymer chemistry ; Geology ; Mathematics ; Biology ; Ecology Electrochemical Analysis and Applications
Authors: Alex Ross | D. Nguyen | Aidan J. MacAdam | German A. Mercado Salazar | Micaela Gianetti | Ramis İleri | Monique Ruel | Erik J. Suuronen | Emilio I. Alarcón
Source: Advanced Functional Materials (article, 2025-12-27)
Field: Materials Science — Biomaterials

Mechanically Stable and Tunable Photoactivated Peptide‐Based Hydrogels for Soft Tissue Adhesion ABSTRACT Compared to the use of natural‐based products, peptide‐based materials can be produced synthetically to reduce cost, batch variability, and avoid pathogen transmission while providing flexible platforms with suitable tissue and cell compatibilities for biomedical uses. In this study, we present a rationally designed, collagen‐like peptide (CLP) hydrogel platform utilizing supramolecular self‐assembly and light‐triggered thiol‐ene crosslinking to form mechanically stable and tunable materials for use as soft tissue adhesives. By screening and characterizing a library of synthetic peptides, ideal candidates for hydrogel formation are identified. Upon adjusting the peptide concentration or structural properties such as junction functionality and choice of reactive group, the mechanical properties of these peptide hydrogels can be optimized to generate robust biomaterials capable of closing wounds with strength comparable to commercial tissue adhesives such as LiquiBand. These peptide materials are also cytocompatible and biodegradable, indicating their potential as adhesives for soft tissue repair. Self-healing hydrogels ; Soft materials ; Peptide ; Adhesion ; Adhesive ; Tissue engineering ; Cell adhesion ; Tissue Adhesion Supramolecular Self-Assembly in Materials ; Hydrogels: synthesis, properties, applications ; Collagen: Extraction and Characterization
Authors: Alyssa B. Williams | Eike B. Bauer
Source: Inorganics (article, 2025-12-14)
Field: Chemistry — Organic Chemistry

Influence of Counterions and Cyclopentadienyl Substituents on the Catalytic Activity of Ferrocenium Cations in Propargylic Substitution Reactions Ferrocenium catalysis is a growing field of research. This study investigates the catalytic activity of different ferrocenium salts in propargylic substitution reactions to afford propargylic ethers. Four different ferrocenium catalysts were employed in the title reaction, which was monitored over time. The rate of the disappearance of the starting material can be fitted to a first order rate law and observed rate constants were determined. The catalyzed propargylic substitution reactions display a moderate but discernible dependence on the ferrocenium counterion. The lack of an induction period for the reaction indicates that the ferrocenium cation itself is catalytically active, and not just a decomposition product thereof, which would result in an induction period. The presence of a carboxylic acid substituent on one of the cyclopentadienyl rings enhances catalytic activity. The Meyer–Schuster rearrangement of the propargylic alcohol to the corresponding conjugated enone played only a minor role in the ferrocenium-catalyzed reactions. Catalyst decomposition moderately retards the reaction but does not suppress product formation, as demonstrated by experiments with aged FcBF4. In contrast, the presence of TEMPO as a radical scavenger completely inhibits product formation, while not causing detectable catalyst decomposition at room temperature. In turn, FeCl3 catalyzes both the propargylic substitution and the Meyer–Schuster rearrangement equally and decomposes the catalysis product over time. These findings reinforce the notion that strong Lewis acids readily promote the rearrangement of propargylic alcohols and that Lewis acidity plays a crucial role in finding a balance between the substitution reactions of propargylic alcohols and their rearrangement to unsaturated aldehydes. Catalysis ; Cyclopentadienyl complex ; Substituent ; Decomposition ; Reaction rate constant ; Lewis acids and bases ; Induction period ; Substitution reaction Catalytic Alkyne Reactions ; Organometallic Complex Synthesis and Catalysis ; Synthetic Organic Chemistry Methods