jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Paula Riascos | Daniel Llamosa Pérez | Jahaziel Amaya | Hansen Murcia
Source: Condensed Matter (article, 2025-07-07)
Field: Materials Science — Materials Chemistry

Ultrasound-Assisted Synthesis for the Control of Silver Nanoparticle Size: A Preliminary Study on the Influence of Pressure and pH The use of plasmonic nanoparticles for biosensor technology is dependent on nanoparticle size and morphology. This study determined the effect of pH and pressure on synthesizing silver nanoparticle size. In Method 1, a mixture of NaBH4 and sodium citrate was added to a solution of AgNO3 monodispersed by ultrasound energy. In Method 2, the reducer was added to the precursor–dispersant mixture solution. The effect of pH was evaluated by using buffer solutions at pH 4.0, pH 7.0, and pH 10.0 and water as control. To determine the effect of pressure, AgNPs were subjected to 0, 4, and 23 h to 1.75 MPa at 200 °C. AgNPs produced with Method 1 showed a more symmetric SPR and a smaller nanoparticle diameter (±6 nm). The SPR with Method 1 at pH 10.0 produced a higher UV peak with a shift around 20 nm. In the case of the pressure treatment, a shift of approximately 20 nm was observed at all time conditions studied, and a higher AgNP diameter was found in contrast to Method 1. Finally, EDX and Raman analysis confirm the presence of AgNPs and a mild oxidation of these. These results suggest that alkalinity and pressure can affect the diameter of AgNPs. Nanoparticle ; Ultrasound ; Materials science ; Nanotechnology ; Chemical engineering ; Medicine ; Engineering ; Radiology Nanoparticles: synthesis and applications ; Gold and Silver Nanoparticles Synthesis and Applications ; Laser-Ablation Synthesis of Nanoparticles
Authors: Shazia Aslam | Basharat Ali | Shahzad Murtaza | Nusrat Shafiq
Source: Materials Advances (article, 2025-01-01)
Field: Chemistry — Organic Chemistry

Synthesis of novel azo dye-based 1,2,4-triazine derivatives and their spectral, fabric and anti-bacterial applications: an integration of solvatochromism, photochromism, colorfastness, TD-DFT and molecular docking analysis In the current research, a series of five novel azo dyes (1c–5c) were synthesized from azodiene (1a–5a) and azodienophile (1b–5b) via the Diels–Alder reaction. Triazine ; Combinatorial chemistry ; Chemistry ; Docking (animal) ; Spectral analysis ; Stereochemistry ; Organic chemistry ; Physics ; Spectroscopy Synthesis and Characterization of Heterocyclic Compounds ; Dyeing and Modifying Textile Fibers ; Synthesis and biological activity
Authors: Alireza Pourvahabi Anbari | Alireza Ranjbari | Muhammad Kashif | Shima Rahmdel Delcheh | Tatwadhika Rangin Siddhartha | Serge Zhuiykov | Philippe M. Heynderickx | Francis Verpoort
Source: Applied Organometallic Chemistry (article, 2025-05-19)
Field: Chemistry — Organic Chemistry

Solvent‐Free Synthesis of Pd‐Modified Zeolitic Imidazolate Framework Nanocomposites for Competitive Arylation and Carbon–Carbon Coupling Reactions ABSTRACT Over an extended period, identifying effective approaches for achieving versatile arylations has presented a notable synthetic challenge. In our research, we have successfully fabricated nanocomposites of zeolitic imidazole frameworks, specifically Pd‐ZIF‐8 and Pd‐ZIF‐67, using an in situ thermal (IST) approach. These compounds have exhibited high catalytic activity as heterogeneous catalysts in carbon–carbon coupling processes mediated by palladium, such as the Suzuki–Miyaura reaction (which involves aryl halides and aryl boronic acids) and the Mizoroki–Heck reaction (which involves aryl halides and olefins). In comparison to previously published research, the IST technique has a number of benefits; these features include the removal of solvents and additives, a low reaction temperature, a single‐step process, no need for activation, and the use of the smallest possible precursor ratio (M/L). This accomplishment was realized through the precise control of ligands and additives. Chemistry ; Zeolitic imidazolate framework ; Imidazolate ; Coupling reaction ; Nanocomposite ; Carbon fibers ; Reinforced carbon–carbon ; Coupling (piping) ; Solvent ; Catalysis ; Chemical engineering ; Organic chemistry ; Metal-organic framework ; Composite number ; Adsorption ; Metallurgy Catalytic Cross-Coupling Reactions ; Sulfur-Based Synthesis Techniques ; Nanomaterials for catalytic reactions
Authors: Leila Hajiaghababaei | Ali Mazloomifar | Faezeh Khalilian | Ghazal Taghizadeh Farahani
Source: Scientific Reports (article, 2025-02-18)
Field: Chemistry — Organic Chemistry

Functionalization of magnetic nanoparticles with 1-cyclopropyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid as an efficient adsorbent for the Gefitinib removal from water This study presents a novel adsorbent for the removal of Gefitinib from water using 1-cyclopropyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid modified SiO<sub>2</sub>@SPION nanoparticles (as SPION@CPFO-PAC). Several investigations were conducted to examine the chemical characteristics, morphological aspects, thermal stability, and magnetic behavior of the produced nano adsorbent. Based on the analysis findings, the produced nano adsorbent exhibited superparamagnetic properties. The findings of the TEM and SEM pictures indicate that the synthesis technique resulted in the creation of uniform nanoparticles, mostly spherical in shape, with an average size of 20-25 nm. These nanoparticles exhibit well-defined structure and possess excellent stability. Under optimal conditions (100 ng/mL-10 mL of Gefitinib, adsorbent dosage = 0.02 g, t = 30 min), the drug elimination percentage reached 92.02%. The results from these adsorption studies were described using the Freundlich isotherm, and the pseudo-second-order model well described the kinetics of adsorption. The thermodynamic investigation indicates that the process is spontaneous and exothermic, as shown by the results of ΔH and ΔG values at various temperatures. The study examined the capacity to retrieve the produced nanoadsorbent and found that it could be efficiently separated and reused for four consecutive cycles without significant decrease in adsorption effectiveness. Surface modification ; Adsorption ; Carboxylic acid ; Chemistry ; Magnetic nanoparticles ; Nanoparticle ; Combinatorial chemistry ; Nuclear chemistry ; Organic chemistry ; Nanotechnology ; Materials science Nanomaterials for catalytic reactions ; Microwave-Assisted Synthesis and Applications ; Nanoparticle-Based Drug Delivery
Authors: Maria Diaz-Galbarriatu | Julia Sánchez‐Bodón | Estíbaliz Hernáez-Laviña | José Luis Vilas‐Vilela | Isabel Moreno-Benítez
Source: Polymers (review, 2025-09-25)
Field: Materials Science — Biomaterials

Biobased Polyamides: A Journey from the Biomass Towards Cutting Edge Materials Since the 1930s, polyamides (PAs) have become increasingly vital across industries like automotive, textiles, electronics, and packaging, owing to their exceptional properties. However, they also have notable limitations, including a tendency to absorb water, low dimensional stability, poor solubility, and the resulting processing challenges. From an environmental perspective, the reliance on fossil-based monomers for traditional PAs and the accumulation of post-consumer waste, due to their resistance to (bio)degradation, are key concerns. In recent decades, significant advancements have been made in synthesizing PAs from bio-based monomers, primarily sourced from inedible lignocellulosic materials. Some of these bio-based PAs exhibit properties comparable to their fossil-derived counterparts, with benefits like enhanced solubility, which simplifies processing. Moreover, certain bio-based variants have shown improved biodegradability, facilitating the potential recovery of monomers for the production of new virgin polymers and reducing waste accumulation. This review highlights the progress in developing PAs from commonly used bio-based sources, including lignin-derived aromatic compounds, terpenes, fatty acids, and furan derivatives, with a focus on the improvements made over their fossil-based analogs. Biomass (ecology) ; Monomer ; Impact resistance ; Lignocellulosic biomass ; Production (economics) ; Polymer ; Polyamide biodegradable polymer synthesis and properties ; Catalysis for Biomass Conversion ; Lignin and Wood Chemistry
Authors: Sébastien Berruée | Jean‐Michel Guigner | Cécile Huin | Jan Patrick Calupitan | Laurent Bouteiller | Lydia Sosa‐Vargas | Jutta Rieger
Source: Macromolecular Rapid Communications (article, 2025-08-14)
Field: Chemistry — Organic Chemistry

Direct Assembly of Micrometer‐Long Polymeric Cylinders in Water via Supramolecular Sticker Engineering We report a direct, solvent-free method to produce micrometer-length, well-organized polymer nanocylinders in water. To achieve this, a hydrophilic poly(N,N-dimethylacrylamide) (PMDAc) was functionalized at one chain-end with a perylene diimide (PDI) sticker using RAFT polymerization. Two PDI RAFT agents were prepared and studied: one featuring two tri(ethylene glycol) (TEG) units at the PDI bay-positions and one without. The corresponding PDI-PDMAc conjugates spontaneously self-assembled in water, driven by π-π interactions made of H-aggregates, and showed a morphological evolution from cylinders to spheres when increasing the polymer chain length. The introduction of TEG units was found to be important to avoid the clustering of nanocylinders or the formation of ill-defined assemblies, which were observed in the TEG-free system. Moreover, we found that the PDI-TEG<sub>2</sub>-PDMAc with degrees of polymerization (DP<sub>n</sub>) below 24 self-assembled into micrometer-long nanocylinders. By heating the aqueous polymer solution, this process can be accelerated and is accompanied by a large increase in viscosity. Fluorescence spectroscopy revealed an excimer emission signal for the PDI polymers in water, with a higher emission for cylinders, suggesting better organization within the PDI H-aggregates. This strategy provides a sustainable approach for developing functional nanomaterials with precise morphological control, eliminating organic solvents and complex processing. Materials science ; Supramolecular chemistry ; Polymer science ; Micrometer ; Composite material ; Polymer chemistry ; Mechanical engineering ; Engineering ; Chemistry ; Molecule ; Organic chemistry Advanced Polymer Synthesis and Characterization ; Modular Robots and Swarm Intelligence ; Innovative Microfluidic and Catalytic Techniques Innovation
Authors: Xiaoshuang Gou | Xinyu Sun | Peng Cheng | Wei Shi
Source: Magnetochemistry (article, 2025-08-31)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Molecular Nanomagnets with Photomagnetic Properties: Design Strategies and Recent Advances The magnetic properties of molecular nanomagnets can be finely modulated by light, which provides great potential in optical switches, smart sensors, and data storage devices. Light-induced spin transition, structure changes, and radical formation could tune the static and dynamic magnetic properties of molecular nanomagnets with high spatial and temporal resolutions. Herein, we summarize the design strategies of photoresponsive molecular nanomagnets and review the recent advances in transition metal/lanthanide molecular nanomagnets with photomagnetic properties. The photoresponsive mechanism based on spin transition, photocyclization, and photogenerated radicals is discussed in detail, providing insights into the photomagnetic properties of molecular nanomagnets for advanced photoresponsive materials. Nanomagnet ; Nanotechnology ; Materials science ; Astrobiology ; Physics Magnetism in coordination complexes ; Organic and Molecular Conductors Research ; Porphyrin and Phthalocyanine Chemistry
Authors: Simone Donato | Rachele Bini | Gianluca Simonetti | Neri Fuochi | Martina Salzano de Luna | Camille Chatard | Pierre‐Louis Brient | Diederik S. Wiersma | Daniele Martella | Camilla Parmeggiani
Source: Macromolecules (article, 2025-09-11)
Field: Materials Science — Electronic, Optical and Magnetic Materials

What Is the Right Chain Length? Liquid Crystalline Network Tuning by Molecular Design Liquid crystalline networks (LCNs) are stimuli-responsive polymers with programmable actuation properties, including fast response times and tunable force generation. Their reversible deformations can be achieved under light irradiation when polymers are functionalized with photoresponsive molecules such as azobenzenes. All of these features need to be adapted for each specific application, and this is possible by tuning the material properties through molecular design. In this study, we demonstrate how to tailor both mechanical properties and light-dependent force development thanks to the synthesis of mesogenic cross-linkers with different alkyl chains. Acting on this molecular parameter allows modulating the maximum actuation force, while modifying the cross-linking degree is a more advantageous strategy to get fast activation. Our results provide valuable insights into the relationship between the molecular structure and material performance, paving the way for a rational design of innovative responsive materials. Mesogen ; Polymer ; Liquid crystalline ; Rational design ; Polymer network ; Alkyl ; Molecule ; Chain (unit) ; Molecular engineering Liquid Crystal Research Advancements ; Advanced Materials and Mechanics ; Nonlinear Optical Materials Studies
Authors: Mingqian Wang | Zhiqiang Ding | Jinba Xiao | Yilong Liao | Zhe Ma | Yue‐Sheng Li | Bin Wang
Source: Angewandte Chemie International Edition (article, 2025-06-21)
Field: Materials Science — Biomaterials

Chemically Recyclable Alternating Poly(thioether <i>‐alt</i> ‐ester)s with Tunable Properties Enabled by Substitution Effects and Stereochemistry The development of innovative poly(ether-ester)s with perfectly alternating ether and ester functionalities to overcome the trade-offs between the polymer's depolymerizability and performance properties is in high demand for advanced material applications and sustainable development. Herein, we prepared a series of enantiopure cyclic thioether-ester monomers bearing various pendant substituents by a facile "polycondensation-depolymerization" strategy. The controlled ring-opening polymerizations of these enantiopure monomers will afford stereoregular poly(thioether-alt-ester)s with structural diversity. The varieties of substituent size, position and stereo-configuration provide the opportunity to systematically investigate polymerization kinetics and thermodynamics as well as structure-properties relationship for the resulting poly(thioether-alt-ester)s. The strategic positioning of α-, γ-, and δ-substituents coupled with stereoregular chain architectures and stereocomplex formation enables wide-range modulation of the polymer's thermal and mechanical properties. A(hard)-B(soft)-A(hard) triblock thermoplastic elastomers with good mechanical performance and elastic recovery were also created by sequential polymerization. Of note, these polymers can be chemically recycled by either ring-closing depolymerization or alcoholysis, with high monomer regeneration efficiency. The systematic investigation of substitution effects and structure-property relationships in this work provides a molecular blueprint for designing novel chemically recyclable polymers with high performance. Thioether ; Monomer ; Materials science ; Polymerization ; Polymer ; Condensation polymer ; Substituent ; Ether ; Depolymerization ; Polymer chemistry ; Organic chemistry ; Chemistry ; Composite material biodegradable polymer synthesis and properties ; Carbon dioxide utilization in catalysis ; Polymer composites and self-healing
Authors: Yijun Shen | Xuehan He | Lei Chen
Source: Biosensors (review, 2025-08-03)
Field: Materials Science — Biomaterials

Synthesis and Biomedical Applications of PLA-HPG-Based Biodegradable Nanocarriers: A Review The development of biodegradable nanocarriers has long been a priority for researchers and medical professionals in the realm of drug delivery. Because of their inherent benefits, which include superior biocompatibility, customizable degradability, easy surface functionalization, and stealth-like behavior, polylactic acid-hyperbranched polyglycerol (PLA-HPG) copolymers have demonstrated a promising future in the field of biomedical research. The synthesis of PLA-HPG copolymers and the creation of their nanoparticles for biomedical uses have been the focus of current efforts. In this review, we summarize the synthetic strategies of PLA-HPG copolymers and corresponding nanoparticles, and highlight their physicochemical properties, biocompatibility, and degradation properties. Furthermore, we introduce a number of PLA-HPG nanoparticles that are utilized for surface skin delivery, wound dressing, and in vivo drug delivery biological applications. Finally, we conclude by offering our thoughts on how this nanoplatform might advance in the future. Nanocarriers ; Biocompatibility ; Drug delivery ; Nanotechnology ; Polylactic acid ; Surface modification ; Nanoparticle ; Materials science ; Chemistry ; Polymer biodegradable polymer synthesis and properties ; Dendrimers and Hyperbranched Polymers ; Graphene and Nanomaterials Applications
Authors: Hannah Beauseroy | Fatemeh Salimi | Julien Aujard-Catot | Léna Alembik | Sébastien Lecommandoux | Colin Bonduelle
Source: Macromolecules (article, 2025-06-23)
Field: Chemistry — Organic Chemistry

Aqueous Ring-Opening Polymerization-Induced Self-Assembly (ROPISA): Tailoring Anisotropic Nanoparticles through Amino Acid <i>N</i>-Carboxyanhydride (NCA) Monomer Selection The synthesis of anisotropic nanoparticles by polymerization-induced self-assembly (PISA) remains challenging yet holds significant potential for biomedical applications. In this context, aqueous ring-opening polymerization-induced self-assembly (ROPISA) of N-carboxyanhydrides (NCAs) has emerged as a promising strategy, offering a straightforward route to peptide-based nanomaterials. The present study was undertaken to evaluate the versatility of aqueous ROPISA across a range of NCAs, elucidating how their hydrophobicity and the chemical structure of the lateral chains provide access to nanoparticle anisotropy. A comparative analysis was conducted between NCAs with different protecting groups and those derived from distinct hydrophobic amino acids. Beyond hydrophobicity, the aqueous ROPISA of glycine NCA, phenylalanine NCA, and tyrosine NCA revealed the crucial role of additional factors such as the hydrophilic/hydrophobic balance, π-π stacking interactions, and hydrogen bonding in shaping nanoparticle anisotropy. Overall, this work highlights the broad applicability of aqueous ROPISA across a wide range of NCA monomers and its ability to generate tailored worm-like nanoparticles for advanced applications. Monomer ; Polymerization ; Polymer chemistry ; Aqueous solution ; Nanoparticle ; Ring-opening polymerization ; Chemistry ; Self-assembly ; Polymer ; Ring (chemistry) ; Chemical engineering ; Materials science ; Nanotechnology ; Organic chemistry Advanced Polymer Synthesis and Characterization ; biodegradable polymer synthesis and properties ; Polymer Surface Interaction Studies
Authors: Elizabeth Ogbe | Yanping Ma | Yizhou Wang | Jiahao Gao | Yang Sun | Wen‐Hua Sun
Source: Molecules (article, 2025-02-13)
Field: Chemistry — Organic Chemistry

Finely-Tuned Bis(imino)pyridylcobalt Complexes Enhance Ethylene Polymerization: The Role of Bulky and Halogen Substituents The bis(imino)pyridylcobalt complexes have been finely tuned through using the aniline derivative bearing a <i>meta</i>-chloro substituent, besides its <i>ortho</i>- and <i>para</i>-di(4-fluorophenyl)methyl and <i>ortho</i>-methyl substituents for the series of 2-[1-(3-chloro-4,6-bis((di(4-fluorophenyl)methyl)-2-methylphenylimino)ethyl]-6-[1-(arylimino)ethyl]pyridylcobalt(II) chlorides (2,6-Me<sub>2</sub>Ph, <b>Co1</b>; 2,6-Et<sub>2</sub>Ph, <b>Co2</b>; 2,6-<i>i</i>Pr<sub>2</sub>Ph, <b>Co3</b>; 2,4,6-Me<sub>3</sub>Ph, <b>Co4</b>; and 2,6-Et<sub>2</sub>-4-MePh, <b>Co5</b>). The compounds were characterized using elemental analysis, <sup>1</sup>H/<sup>13</sup>C NMR, FT-IR spectroscopy, and the single-crystal X-ray diffraction used in confirming the molecular structures of <b>Co1, Co2, Co4,</b> and <b>Co5</b>. The newly synthesized precatalysts, maintaining steric influences with the addition of an electron-withdrawing <i>meta</i>-chloro group, achieved higher activities along with better thermal stability, and controlled molecular weights of polyethylenes obtained. Upon activation with either MAO or MMAO, all catalysts exhibited remarkable activity for ethylene polymerization, for example, 9.2 × 10<sup>6</sup> g mol<sup>-1</sup> h<sup>-1</sup> by <b>Co1</b> at 70 °C with 30 min and 18.0 × 10<sup>6</sup> g mol<sup>-1</sup> h<sup>-1</sup> by <b>Co4</b> with the first 5 min. <b>Co4</b> demonstrated exceptionally thermal stability with the peak activity of 8.9 × 10<sup>6</sup> g mol<sup>-1</sup> h<sup>-1</sup> at 70 °C and slightly decreased to 7.2 × 10<sup>6</sup> g mol<sup>-1</sup> h<sup>-1</sup> at 80 °C, and even maintained an activity of 1.6 × 10<sup>6</sup> g mol<sup>-1</sup> h<sup>-1</sup> at 100 °C. More importantly, all resultant polyethylenes were characterized as having vinyl-terminal and high-linear feature along with narrow dispersity; the molecular weights could be adapted in the ranges from 6.4 to 50.0 kg mol<sup>-1</sup>. In comparison with previous cobalt analogs, the current system performed better thermal stability and polymerization efficiency. Therefore, such robust complex catalysts are potentially considered for the polyethylene industry. Halogen ; Ethylene ; Polymerization ; Chemistry ; Polymer chemistry ; Organic chemistry ; Catalysis ; Polymer Organometallic Complex Synthesis and Catalysis ; Carbon dioxide utilization in catalysis ; Synthesis and characterization of novel inorganic/organometallic compounds
Authors: Fengyu Wang | Sen Tong | Xuan Ma | Huan Yang | Tianbao Zhang | Kai Yi Wu | Junzi Wu
Source: Frontiers in Drug Delivery (review, 2025-07-30)
Field: Materials Science — Biomaterials

Nickel nanoparticles: a novel platform for cancer-targeted delivery and multimodal therapy Traditional cancer treatment methods often encounter limitations, such as poor targeting, low bioavailability, and high systemic toxicity. These challenges have led researchers to explore alternative therapeutic strategies. Nickel nanoparticles (NiNPs), owing to their distinctive physicochemical properties and tunable biocompatibility, have attracted considerable attention in cancer therapy and drug delivery applications. These nanomaterials demonstrate excellent magnetic properties, photothermal conversion capabilities, catalytic activity, and potential for multifunctionality and targeted drug delivery via surface modification. This review highlights recent advancements in the use of NiNPs for cancer treatment, emphasizing their advantages as drug carriers that enhance the bioavailability, targeting, and therapeutic efficacy of anticancer agents. Additionally, the synergistic applications of NiNPs in multimodal therapies, including magnetic hyperthermia, photothermal therapy, and chemodynamic therapy, are discussed, as well as their potential as theranostic platforms. Although nickel-based nanodelivery systems show significant promise for clinical translation, issues related to biosafety, degradation metabolism, and long-term toxicity remain and require further investigation to support their clinical application. Photothermal therapy ; Drug delivery ; Cancer therapy ; Targeted drug delivery ; Nanotechnology ; Biocompatibility ; Drug ; Medicine ; Magnetic hyperthermia ; Pharmacology ; Cancer ; Materials science ; Magnetic nanoparticles ; Nanoparticle ; Internal medicine Nanoparticle-Based Drug Delivery ; Extracellular vesicles in disease ; Nanoplatforms for cancer theranostics