jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Matthew J Little | Jody M. Mason | Nazia Mehrban
Source: Journal of Materials Chemistry B (review, 2025-01-01)
Field: Materials Science — Biomaterials

Evolution of branched peptides as novel biomaterials Branched peptide-based materials draw inspiration from dendritic structures to emulate the complex architecture of native tissues, aiming to enhance the performance of biomaterials in medical applications. These innovative materials benefit from several key features: they exhibit slower degradation rates, greater stiffness, and the ability to self-assemble. These properties are crucial for maintaining the structural integrity and functionality of the materials over time. By integrating bioactive peptides and natural polymers within their branched frameworks, these materials offer modularity and tunability and can accommodate a range of mechanical properties, degradation rates, and biological functions making them suitable for biomedical applications, including drug delivery systems, wound healing scaffolds, and tissue engineering constructs. In drug delivery, these materials can be engineered to release therapeutic agents in a controlled manner, enhancing the efficacy and safety of treatments. In wound healing, they provide a supportive environment which promotes rapid and efficient tissue repair. The combination of biomimetic design and functional adaptability makes branched peptide-based materials a promising candidate for the development of next-generation biomaterials, paving the way for significant advancements in healthcare. Materials science ; Polymer science ; Nanotechnology Supramolecular Self-Assembly in Materials
Authors: Luis León‐Alcaide | Lucía Martínez‐Goyeneche | Michele Sessolo | Bruno J. C. Vieira | João C. Waerenborgh | J. Alberto Rodríguez‐Velamazán | Óscar Fabelo | Matthew J. Cliffe | David A. Keen | Guillermo Mı́nguez Espallargas
Source: Nature Communications (article, 2025-10-02)
Field: Materials Science — Materials Chemistry

Direct synthesis of an iron metal-organic framework antiferromagnetic glass We present a direct route to prepare a family of MOF glasses without a meltable crystalline precursor, in contrast to the conventional melt-quenching approach. This one-step synthesis uses the linker itself as the reaction medium under an inert atmosphere, enabling the incorporation of highly hydrolytically unstable M(II) centers. This route produces high-purity iron (II) MOF glasses avoiding the oxidation and partial degradation commonly associated with the conventional melt-quenching process. The transparent glassy monoliths of formula Fe(im)<sub>2-x</sub>(bim)<sub>x</sub>, denoted as dg-MUV-29 (dg = direct-glass), can be prepared with different amounts of imidazole and benzimidazole as well as with linkers with diverse functionalities (NH<sub>2</sub>, CH<sub>3</sub>, Br, and Cl). The absence of magnetic impurities allows us to study the magnetic properties of the MOF glass itself and show that MOF glasses are good model systems for topologically-disordered amorphous antiferromagnets. We also present the functional advantages of direct-glass synthesis by creating free-standing films of glassy MOFs and integrating them in optoelectronic devices. Direct-glass synthesis is thus a powerful route to exploit the true functional potential of glassy MOFs, not only realizing further classes of MOF glasses but also unveiling properties that can be accessed with these materials. Amorphous solid ; Linker ; Antiferromagnetism ; Impurity ; Inert ; Solvothermal synthesis Lanthanide and Transition Metal Complexes ; Metal-Organic Frameworks: Synthesis and Applications ; Magnetism in coordination complexes
Authors: Shrabani Khan | Joe B. Gilroy
Source: Chemistry - A European Journal (article, 2025-01-16)
Field: Chemistry — Organic Chemistry

Phosphorus‐Nitrogen Heterocycles Derived from Chelating <i>N</i> ‐Donor Ligands: Historical Advances, Recent Highlights, and Outlook The exploration of phosphorus-nitrogen heterocycles derived from chelating N-donor ligands is an area of research that has lagged behind the development of similar heterocycles based on other main group elements, most notably boron. The fact that phosphorus and nitrogen are both group 15 elements and that their compounds are most commonly viewed as Lewis bases likely contributes to this observation. However, through judicious ligand design and creative use of phosphorus sources that render phosphorus as Lewis acidic and/or electron poor, a variety of heterocyclic architectures are possible. In this article, we highlight selected examples of phosphorus adducts of bidentate, tridentate, and tetradentate N-donor ligands that have shown utility as functional molecular materials, in small molecule activation and catalysis, and as therapeutics and diagnostics in chemical biology. Finally, we look forward to the future of this emerging area and provide commentary on the unique opportunities available to researchers working within the field of phosphorus-nitrogen heterocycle chemistry. Phosphorus ; Chelation ; Nitrogen ; Chemistry ; Environmental chemistry ; Organic chemistry Synthesis and Reactivity of Heterocycles ; Synthesis and Characterization of Heterocyclic Compounds ; Organophosphorus compounds synthesis
Authors: Yu Zhao | Shengjie Wang | Zihao Wei | Shiming Qiu | Guofu Zhou | Jr‐Hau He | Xuezhu Xu
Source: Advanced Science (review, 2025-05-21)
Field: Materials Science — Biomaterials

Natural Toolbox–Chemical Engineering Aspect and High‐Value Applications of Janus Cellulose Nanomaterials Nanotechnology has emerged as a transformative force, enabling the manipulation and engineering of materials at the nanoscale level, which has led to the discovery and development of novel materials with unique properties and functionalities. Janus cellulose nanomaterials, a product of nanotechnology, have attracted significant attention. This article aims to address the current lack of fundamental mechanistic understanding in Janus cellulose by investigating the intrinsic relationship between structural design and functional performance. Specifically, it begins by elucidating the construction principles of Janus cellulose nanomaterials, with a particular focus on how their asymmetric architectures impart anisotropic physicochemical properties, such as interfacial tension modulation, directional interactions, and selective transport. By integrating multiscale modeling approaches-including molecular dynamics simulations and density functional theory calculations-the underlying interfacial behaviors and assembly pathways are revealed, providing theoretical insight into their conformational stability and dynamic response mechanisms. It also explores how surface functionalization and selective chemical modification strategies can be leveraged to finetune hydrophilicity/hydrophobicity balance and interfacial activity, thereby enabling precise control over Janus cellulose interface configuration and functional attributes. On this basis, it further examines non-covalent driving forces-including electrostatic interactions, van der Waals forces, and hydrogen bonding-within the self-assembly process, and systematically maps the relationship between assembly conditions and structural evolution. This work establishes a comprehensive structure-driving force-assembly process-property framework, offering theoretical support and design guidance for the development of high-performance Janus cellulose nanomaterials in advanced applications such as flexible electronics, smart sensing systems, controlled drug delivery, and energy conversion and storage. Nanomaterials ; Cellulose ; Janus ; Toolbox ; Nanotechnology ; Materials science ; Chemical engineering ; Engineering ; Mechanical engineering Advanced Cellulose Research Studies ; Pickering emulsions and particle stabilization ; Electrohydrodynamics and Fluid Dynamics
Authors: Miguel Espinosa | Miquel Molina-García | Daniel Ciscares-Velázquez | Antonio Leyva‐Pérez
Source: Organic Chemistry Frontiers (article, 2025-01-01)
Field: Chemistry — Inorganic Chemistry

Countercation- and solvent-controlled selective borohydride hydrogenation of alkenes in diaryl enones Gem -diaryl enones and trans -diaryl enones (chalcones) are selectively hydrogenated at the alkene rather than at the ketone functionality under standard uncatalyzed reaction conditions with metal borohydrides ( i.e. NaBH 4 ). Chemistry ; Borohydride ; Solvent ; Organic chemistry ; Combinatorial chemistry ; Catalysis Asymmetric Hydrogenation and Catalysis ; Catalytic Cross-Coupling Reactions ; Organoboron and organosilicon chemistry
Authors: Israa Shioukhi | Langit Cahya Adi | Vincent Dorcet | Olivier Cador | G. L. J. A. Rikken | Boris Le Guennic | Jeanne Crassous | Cyrille Train | Fabrice Pointillart | Matteo Atzori | Ori Gidron
Source: Inorganic Chemistry Frontiers (article, 2025-01-01)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Magneto-chiral dichroism in a chiral twistacene ytterbium(<scp>iii</scp>) one-dimensional assembly of single-molecule magnets Here we report on one-dimensional nano objects of formula [Yb(hfac)<sub>3</sub>(<i>M</i>-or <i>P</i>-Ant-C8)] <sub><i>n</i></sub> where the Ant-C8 moiety refers to enantiopure <i>M</i>- and <i>P</i>-twistacenes decorated at positions 2,6 with 4-pyridyl-ethynyl units and helically locked into an end-to-end twist by an octyl tether. The crystal structure analysis reveals intertwined 1D nano-chains featuring two crystallographically independent Yb(iii) ions. Under applied magnetic fields these systems show slow relaxation of the magnetization. The optical properties show the expected contributions of the <sup>2</sup>F<sub>7/2</sub> ← <sup>2</sup>F<sub>5/2</sub> electronic transition of the Yb(iii) ions split by the crystal field. Magnetic field and temperature dependent Magneto-Chiral Dichroism (MChD) studies reveal contributions of opposite sign and similar intensity for the two crystallographically independent ions that cancel out for the 0-0' and 0-2' absorptions but not for the 0-1'. These findings, supported by <i>ab intio</i> theoretical calculations, demonstrate the important role of the structural arrangement of MChD-active ions when designing chiral magneto-optical materials responsive to light and magnetic fields. Enantiopure drug ; Ytterbium ; Moiety ; Molecule ; Crystallography ; Circular dichroism ; Materials science ; Magneto ; Stereochemistry ; Chirality (physics) ; Magnet ; Chemistry ; Enantioselective synthesis ; Physics ; Optoelectronics ; Organic chemistry ; Chiral symmetry ; Catalysis ; Quantum mechanics Magnetism in coordination complexes ; Advanced NMR Techniques and Applications ; Lanthanide and Transition Metal Complexes
Authors: Masoud Aman Mohammadi | Adel Mirza Alizadeh | Samira Dakhili | Safa Kooki | Seyede Marzieh Hosseini
Source: eFood (article, 2025-07-09)
Field: Materials Science — Biomaterials

Bacterial Nanocellulose: A Sustainable Revolution in Food Science ABSTRACT Bacterial nanocellulose (BNC) is an eco‐friendly biomaterial celebrated for its exceptional physicochemical properties, making it valuable across diverse industries. Produced through bacterial fermentation, BNC exhibits high mechanical strength, biocompatibility, and biodegradability, ideal for applications in biomedicine, environmental remediation, and food science. In the food sector, BNC serves as a sustainable alternative to synthetic additives and packaging. It functions as a thickening, stabilizing, and gelling agent, improving texture, consistency, and shelf life in products like sauces, dairy, and gluten‐free baked goods. Additionally, BNC's role as an edible coating and biodegradable packaging material offers innovative solutions for food preservation, reducing spoilage, and addressing plastic waste concerns. This review outlines BNC's production processes, emphasizing bacterial strain selection, culture media optimization, and fermentation control. It also highlights its multifaceted applications in enhancing food safety, packaging, and quality. Despite challenges such as high production costs, scalability issues, and regulatory compliance, future directions, including genetically engineered BNC, nanocomposites, and smart technology integration, suggest promising advancements. BNC is poised to transform food production and packaging by fostering more sustainable, innovative practices. Nanocellulose ; Nanotechnology ; Business ; Materials science ; Engineering ; Chemical engineering ; Cellulose Advanced Cellulose Research Studies ; Biofuel production and bioconversion ; Polysaccharides Composition and Applications
Authors: Bakí Hazer | Özgür Keleṣ
Source: ACS Omega (article, 2025-02-06)
Field: Chemistry — Organic Chemistry

Comparison of the Macro Chain Transfer Agent and the Macro Azo Initiator Based on the Poly(3-hydroxy Butyrate) in the Polymerization Kinetics of Methyl Methacrylate Poly(3-hydroxybutyrate) (PHB) derivatives are attractive for sustainable polymer production, yet their role in controlling radical polymerization kinetics remains underexplored. In this study, we compare the polymerization kinetics of methyl methacrylate (MMA) using two PHB-based macroinitiators: a macro chain transfer agent (PHB-macro reversible addition-fragmentation chain transfer (RAFT)) and a macroazo initiator (PHBai). RAFT polymerizations (PHB-R-PMMA) were conducted at 70 °C with PHB-macro RAFT in the presence of 2,2'-azobis(isobutyronitrile), while conventional free radical polymerizations (PHBaiPMMA) were carried out using PHBai under identical conditions. The RAFT system exhibited a slightly lower overall rate constant (<i>k</i> = 1.11 × 10<sup>-4</sup> L/mol·s) compared to the azo-initiated system (<i>k</i> = 1.28 × 10<sup>-4</sup> L/mol·s). Both systems showed a gradual decrease in the PHB content over time, indicating effective copolymer formation with increasing MMA incorporation. Activation energies for PHB-macro RAFT and PHBai were calculated as 0.88 and 1.05 kJ/mol, respectively, demonstrating RAFT's superior control over molecular architecture. The resulting PHB-PMMA block copolymers offer promising applications in orthopedic surgery (e.g., bone cements), packaging, medical implants, drug delivery, and dental materials. This study provides the first direct comparison of PHB-based macro RAFT and azo systems for MMA polymerization, highlighting RAFT's advantage in achieving controlled polymer architectures and expanding biomedical and industrial utility. Kinetics ; Polymer chemistry ; Chain transfer ; Polymerization ; Chemistry ; Methyl methacrylate ; Macro ; Transfer agent ; Methacrylate ; Radical polymerization ; Organic chemistry ; Polymer ; Computer science Advanced Polymer Synthesis and Characterization ; biodegradable polymer synthesis and properties ; Photopolymerization techniques and applications
Authors: Roman Gańczarczyk | Magdalena Rudowska | Maciej Gryszel | Adam Proń | Renata Rybakiewicz | Eric Daniel Głowacki
Source: Small (article, 2025-04-30)
Field: Materials Science — Polymers and Plastics

In Situ Electropolymerized Ambipolar Copolymers for Vertical OECTs A novel approach is reported for obtaining ambipolar electroactive polymers via in situ electropolymerization for vertical organic electrochemical transistor (vOECT) applications. It is shown that electropolymerization is a practical and efficient method to obtain copolymers without contamination from chemical polymerization processes. To this end, two monomers, G-DTP-Bu-NDI and G-DTP-G-NDI, are proposed, comprising naphthalene diimide (NDI) as the acceptor core and dithienopyrrole (DTP) as the donor unit, capable of forming carbon-carbon bonds under the influence of an electric current. The incorporation of oligo(oxyethylene) (OEG) side groups ensures their amphiphilicity. Both compounds underwent successful electrochemical polymerization, resulting in thin, porous, uniform polymer layers on the electrode surface. The synthesized polymers are further examined using electrochemical and spectroelectrochemical techniques in both organic and aqueous electrolytes. Regardless of the electrolyte medium (aqueous or non-aqueous), poly(G-DTP-Bu-NDI), and poly(G-DTP-G-NDI) exhibit stable electroactivity, as demonstrated by numerous scans showing ambipolar redox behavior. Both polymers are tested as components of vertical OECTs, following in situ electrochemical deposition within a 350 nm channel. The recorded transfer characteristics suggest that the fabricated donor-acceptor (D-A) compounds hold promise for developing a new generation of ambipolar ECT devices. Materials science ; Ambipolar diffusion ; Electrochemistry ; Polymer ; Polymer chemistry ; Polymerization ; Copolymer ; Aqueous solution ; Monomer ; Chemical engineering ; Acceptor ; Electrolyte ; Electrode ; Chemistry ; Organic chemistry ; Physical chemistry Conducting polymers and applications ; Organic Electronics and Photovoltaics ; Molecular Junctions and Nanostructures
Authors: Onur Karaman | Ertuğrul Ceyran | S Esra Bolsu Kariper | İshak Afşin Kari̇per | Ceren Karaman
Source: Scientific Reports (article, 2025-08-09)
Field: Materials Science — Electronic, Optical and Magnetic Materials

High-energy X-ray irradiation-induced functionalization of Ni(OH)₂ for enhanced supercapacitor electrodes Nickel hydroxide (Ni(OH)₂) is a promising electrode material for supercapacitors due to its high theoretical capacitance. However, its practical performance is hindered by limited cycle stability, poor electrical conductivity, and sluggish ion transport. To overcome these limitations, this study introduces a novel strategy involving high-energy X-ray irradiation-induced functionalization to enhance the electrochemical properties of Ni(OH)₂ electrodes. Pristine Ni(OH)₂ was subjected to 15 MV X-ray irradiation at a dose of 10-20 Gy, utilizing Compton scattering to induce controlled surface-level modifications while preserving the bulk crystal structure. Physicochemical characterizations including XRD, Raman spectroscopy, FTIR, and ICP-MS revealed the introduction of new surface functionalities and optimized ion diffusion pathways, without compromising isotopic or crystallographic integrity. Electrochemical performance was evaluated in 1.0 M Na₂SO₄ electrolyte. The irradiated electrode (f-Ni(OH)₂) demonstrated a specific areal capacitance of 671.2 mF·cm⁻² at a scan rate of 1 mV·s⁻¹, marking a 41% improvement over its non-irradiated counterpart (474.7 mF·cm⁻²). Galvanostatic charge-discharge measurements yielded a high capacitance of 1253.5 mF·cm⁻² at 1.0 mA·cm⁻². Electrochemical impedance spectroscopy further confirmed enhanced ion and electron kinetics, with a decrease in solution resistance from 18.4 Ω to 13.0 Ω. Critically, the f-Ni(OH)₂ electrodes retained 99.2% of their initial capacitance after 5,000 continuous cycles, demonstrating exceptional long-term stability. The observed improvements place f-Ni(OH)₂ within the performance range of microsupercapacitor technologies, highlighting their strong potential for future integration into miniaturized energy storage platforms. This work represents the first demonstration of using high-energy X-ray irradiation to functionalize metal hydroxides for energy storage applications, offering a scalable, chemical-free, and cost-effective approach to engineer next-generation supercapacitor electrodes. The findings provide new insights into radiation-matter interactions for material engineering, offering a promising route toward high-performance, long-lifespan energy storage systems. Supercapacitor ; Materials science ; Dielectric spectroscopy ; Electrochemistry ; Electrode ; Capacitance ; Electrolyte ; Surface modification ; Irradiation ; Horizontal scan rate ; Analytical Chemistry (journal) ; Chemical engineering ; Cyclic voltammetry ; Chemistry ; Physical chemistry Supercapacitor Materials and Fabrication ; Advancements in Battery Materials ; Advanced battery technologies research
Authors: Fengyao Cui | Qiaona Zhang | Xiaoman Dang | Tangxin Xiao
Source: Tetrahedron Chem (article, 2025-01-20)
Field: Materials Science — Materials Chemistry

Supramolecular light-harvesting systems based on cyanostilbene derivatives Photosynthesis provides a natural model for efficient light harvesting, inspiring the development of artificial systems designed to mimic this capability in capturing and converting solar energy.Artificial light-harvesting systems (LHSs) have thus become a key area of research, with promising applications in sensing, imaging, photocatalysis, and optoelectronics.Among the materials explored for LHSs, cyanostilbene derivatives stand out due to their ease of synthesis and unique photophysical properties, such as aggregation-induced emission (AIE) enhancement.These molecules can self-assemble into supramolecular structures through non-covalent interactions, including host-guest interactions, multiple hydrogen bonds, amphiphilic interactions, and metalligand coordination, offering tunable architectures for efficient energy transfer and light absorption.This minireview examines recent advancements in the design, synthesis, and functional performance of cyanostilbenebased supramolecular LHSs, analyzing their efficiency and adaptability in energy transfer processes.Future research may focus on integrating these systems with nanomaterials and exploring their potential in advanced energy conversion devices, offering new avenues for sustainable energy technologies. Supramolecular chemistry ; Computer science ; Chemistry ; Organic chemistry ; Molecule Luminescence and Fluorescent Materials ; Molecular Sensors and Ion Detection ; Supramolecular Chemistry and Complexes
Authors: Nozomu Ishiwata | Takashi Komuro | Kasumi Takahashi | Yasuaki Zenzai | Hiromi Tobita | Hisako Hashimoto
Source: Chemistry - An Asian Journal (article, 2025-07-21)
Field: Chemistry — Organic Chemistry

Iron Catalysts with Silyl‐NHC Chelate Ligands: Controlling Factors for Hydroboration vs. Dehydrogenative Borylation of Olefins Various iron complexes 1, featuring silyl-NHC chelate ligands (NHC = N-heterocyclic carbene) were synthesized and investigated for their catalytic performance in the borylation reactions of olefins. Complexes 1 facilitated both hydroboration and dehydrogenative borylation of olefins with HBpin, yielding borylalkanes and borylalkenes, respectively. The selectivity between the two pathways was found to be governed by the steric effect of a substituent on one nitrogen atom of the NHC moiety. Possible catalytic mechanisms including hydroborato and β-agostic-alkyl complexes as potential resting states or intermediates are proposed based on stoichiometric reactions. Hydroboration ; Borylation ; Chemistry ; Silylation ; Catalysis ; Organoboron compounds ; Chelation ; Organic chemistry ; Medicinal chemistry Organoboron and organosilicon chemistry ; Asymmetric Hydrogenation and Catalysis ; Carbon dioxide utilization in catalysis