jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: P. Baraneedharan | D. Shankari | Arunachalam Arulraj | Percy J. Sephra | Ramalinga Viswanathan Mangalaraja | Mohammad Khalid
Source: Journal of The Electrochemical Society (article, 2023-09-21)
Field: Materials Science — Materials Chemistry

Nanoengineering of MXene-Based Field-Effect Transistor Gas Sensors: Advancements in Next-Generation Electronic Devices In recent years, Two-Dimensional (2D) materials have gained significant attention for their distinctive physical and chemical properties, positioning them as promising contenders for the next generation of electronic technologies. One notable group within these materials is MXenes, which have exhibited remarkable breakthroughs across various technological domains, including catalysis, renewable energy, electronics, sensors, fuel cells, and supercapacitors. By making subtle modifications to the surface termination, introducing metal ions, precise etching timing, and applying surface functionalization, the characteristics of MXenes can be fine-tuned to achieve desired band structures, rendering them suitable for sensor design. This review focuses on the strategic development of gas sensors based on Field-Effect Transistors (FETs), thoroughly examining the latest progress in MXene-based material design and addressing associated challenges and future prospects. The review aims to provide a comprehensive overview of MXene, summarizing its current applications and advancements in FET-based gas sensing. MXenes ; Nanoengineering ; Nanotechnology ; Electronics ; Transistor ; Field-effect transistor ; Computer science ; Materials science ; Systems engineering ; Electrical engineering ; Engineering MXene and MAX Phase Materials ; Graphene research and applications ; Gas Sensing Nanomaterials and Sensors
Authors: Bo Hou | Xiaojin Yan | Jinlin He | Wenbin Zhang | Yu Shao
Source: Giant (article, 2023-05-15)
Field: Chemistry — Organic Chemistry

Self-assembly of three-component bolaform giant surfactants with branched architectures Branched architecture profoundly influences the physical properties of polymers, making it an important topic in the field of polymer science. Herein, we report a facile synthetic strategy to introduce one site-specific side chain at the junction point to fabricate a series of bolaform giant surfactants with branched architecture. By tuning the volume fraction and the ratio between the linking chain and side chain, various phases have been identified, including three-phase-four-layer lamellae, graphene-like honeycombs, tetragonally packed cylinders, and two-phase lamellae. Notably, the lattice dimension of obtained columnar structures is ∼12 nm, corresponding to sub-10 nm cylinder diameters. As revealed by temperature-dependent small-angle X-ray scattering profiles, a branched architecture significantly decreases the order-disorder transition temperature by ∼90 °C. We also use semi-quantitative calculations to analyze the thermodynamic properties of the observed phases and build rational connections between phase behaviors and the corresponding branching ratios. This study shed light on fine-tuning the macromolecular assembly via molecular topology engineering. Polymer ; Materials science ; Branching (polymer chemistry) ; Volume fraction ; Lattice (music) ; Macromolecule ; Phase (matter) ; Chemical physics ; Chemical engineering ; Chemistry ; Composite material ; Physics ; Organic chemistry Advanced Polymer Synthesis and Characterization ; Block Copolymer Self-Assembly ; Surfactants and Colloidal Systems
Authors: Jamshed Haneef | Mohd Amir | Nadeem Ahmed Sheikh | Renu Chadha
Source: AAPS PharmSciTech (review, 2023-02-09)
Field: Chemistry — Physical and Theoretical Chemistry

Mitigating Drug Stability Challenges Through Cocrystallization Biopharmaceutical ; Cocrystal ; Drug ; Biochemical engineering ; Drug discovery ; Combinatorial chemistry ; Pharmaceutical formulation ; Computer science ; Risk analysis (engineering) ; Pharmacology ; Chemistry ; Business ; Medicine ; Organic chemistry ; Molecule ; Biotechnology ; Engineering Crystallography and molecular interactions ; Crystallization and Solubility Studies ; Crystal structures of chemical compounds
Authors: Fabrice Pointillart | Jessica Flores González | Haiet Douib | Vincent Montigaud | Charles J. McMonagle | Boris Le Guennic | Olivier Cador | Dawid Pinkowicz | Michael R. Probert
Source: Chemistry - A European Journal (article, 2023-04-18)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Reversible Pressure‐Magnetic Modulation in a Tetrathiafulvalene‐Based Dyad Piezochromic Dysprosium Single‐Molecule Magnet** The extreme sensitivity of trivalent lanthanide ions to crystal field variations led to the emergence of single-molecule magnetic switching under various stimuli. The use of pressure as an external stimulus instead of classic light irradiation, oxidation or any chemical reactions allows a fine tuning of the magnetic modulation. Here the well-known pure isotopically enriched [<sup>162</sup> Dy(tta)<sub>3</sub> (L)]⋅C<sub>6</sub> H<sub>14</sub> (<sup>162</sup> Dy) Single-Molecule Magnet (SMM) (tta<sup>-</sup> =2-2-thenoyltrifluoroacetonate and L=4,5-bis(propylthio)-tetrathiafulvalene-2-(2-pyridyl)benzimidazole-methyl-2-pyridine) was experimentally investigated by single-crystal diffraction and squid magnetometry under high applied pressures. Both reversible piezochromic properties and pressure modulation of the slow magnetic relaxation behavior were demonstrated and supported by ab initio calculations. The magnetic study of the diluted sample [<sup>162</sup> Dy<sub>0.05</sub> Y<sub>0.95</sub> (tta)<sub>3</sub> (L)]⋅C<sub>6</sub> H<sub>14</sub> (<sup>162</sup> Dy@Y) indicated that variations in the electronic structure have mainly intermolecular origin with weak intramolecular contribution. Quantitative magnetic interpretation concludes to a deterioration of the Orbach process for the benefit of both Raman and QTM mechanisms under applied pressure. Dysprosium ; Tetrathiafulvalene ; Intramolecular force ; Single-molecule magnet ; Single crystal ; Molecule ; Raman spectroscopy ; Materials science ; Lanthanide ; Intermolecular force ; Analytical Chemistry (journal) ; Chemistry ; Magnetometer ; Magnetic field ; Crystallography ; Nuclear magnetic resonance ; Ion ; Magnetization ; Inorganic chemistry ; Stereochemistry ; Organic chemistry ; Optics Magnetism in coordination complexes ; Lanthanide and Transition Metal Complexes ; Organic and Molecular Conductors Research
Authors: Patrícia Manuela Ribeiro Batista | Cátia D. F. Martins | M. Manuela M. Raposo | Susana P. G. Costa
Source: Molecules (article, 2023-04-09)
Field: Chemistry — Spectroscopy

Novel Crown Ether Amino Acids as Fluorescent Reporters for Metal Ions Unnatural amino acids with enhanced properties, such as increased complexing ability and luminescence, are considered to be highly attractive building blocks for bioinspired frameworks, such as probes for biomolecule dynamics, sensitive fluorescent chemosensors, and peptides for molecular imaging, among others. Therefore, a novel series of highly emissive heterocyclic alanines bearing a benzo[<i>d</i>]oxazolyl unit functionalized with different heterocyclic π-spacers and (aza)crown ether moieties was synthesized. The new compounds were completely characterized using the usual spectroscopic techniques and evaluated as fluorimetric chemosensors in acetonitrile and aqueous mixtures in the presence of various alkaline, alkaline-earth, and transition metal ions. The different crown ether binding moieties as well as the electronic nature of the π-bridge allowed for fine tuning of the sensory properties of these unnatural amino acids towards Pd<sup>2+</sup> and Fe<sup>3+</sup>, as seen by spectrofluorimetric titrations. Crown ether ; Fluorescence ; Chemistry ; Biomolecule ; Titration ; Aqueous solution ; Metal ions in aqueous solution ; Ether ; Amino acid ; Acetonitrile ; Luminescence ; Combinatorial chemistry ; Metal ; Polymer chemistry ; Organic chemistry ; Ion ; Materials science Molecular Sensors and Ion Detection ; Luminescence and Fluorescent Materials ; Supramolecular Chemistry and Complexes
Authors: Matevž Dular | Claus‐Dieter Ohl
Source: Wear (article, 2023-07-27)
Field: Materials Science — Materials Chemistry

Bulk material influence on the aggressiveness of cavitation – Questioning the microjet impact influence and suggesting a possible way to erosion mitigation In a study conducted over 10 years ago (Petkovsek and Dular, 2013) [1] we noticed that the thin metal sheet sustains less cavitation damage when it is attached to an acrylic glass (PMMA) than in the case when we attached it to quartz glass (SiO2). The reason for this was not explored at the time. In the present paper we present a systematic study of single cavitation bubble erosion of a thin aluminum foil, which was attached to either PMMA or SiO2 plate. We show that the damage sustained on the foil attached to PMMA plate is significantly smaller regardless of the bubble collapse distance from the boundary. The result is surprising since one would expect the weak foil to be severely damaged regardless of the material it is attached to. By femtosecond illumination and high-speed image acquisition we were able to capture the formation and progression of the shock waves, which are emitted at cavitation bubble collapse and observed that they are reflected on SiO2 boundary but that they traverse the PMMA bulk material. We offer an explanation that to achieve less damage the bulk material needs to have acoustic impedance similar to the one of the liquid medium in which cavitation occurs. Further on, we constructed a simple composite material where PMMA was attached to the SiO2 and showed that we can partially mitigate the damage. This was further confirmed by ultrasonic cavitation erosion tests. The results also imply that the cavitation damage originates solely from the shock wave, which is emitted at cavitation bubble collapse – consequently putting the idea of microjet impact mechanism under question. Finally, the study offers a new exciting approach to mitigate cavitation erosion by fine tuning the acoustic impedance of the coatings. Cavitation ; Materials science ; Bubble ; Composite material ; Shock wave ; FOIL method ; Shock (circulatory) ; Cavitation erosion ; Underwater explosion ; Ultrasonic sensor ; Acoustics ; Mechanics Ultrasound and Cavitation Phenomena ; Nuclear Physics and Applications ; Combustion and Detonation Processes
Authors: Ariff Zahiruddin Mohamad | M. Pershaanaa | Fathiah Kamarulazam | Zhi Ling Goh | Shahid Bashir | S. Ramesh | K. Ramesh
Source: Materials Chemistry and Physics (article, 2023-07-31)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Hydrothermally modified tin(II) sulfide binder-free battery grade electrode for supercapattery Materials science ; Supercapacitor ; Electrode ; High-resolution transmission electron microscopy ; Chemical engineering ; Horizontal scan rate ; Battery (electricity) ; Electrochemistry ; Sulfide ; Nanotechnology ; Transmission electron microscopy ; Scanning electron microscope ; Composite material ; Cyclic voltammetry ; Metallurgy ; Chemistry Supercapacitor Materials and Fabrication ; Advanced battery technologies research ; Advancements in Battery Materials
Authors: Feihong Du | Zhiwu Song | YuTao Xu | Donglin Han | Qiang Li | Shanyu Zheng | JiaHe Shen | Xiaoshi Qian
Source: Science China Technological Sciences (article, 2023-03-01)
Field: Materials Science — Materials Chemistry

Multi-element B-site substituted perovskite ferroelectrics exhibit enhanced electrocaloric effect Electrocaloric effect ; Materials science ; Ceramic ; Ferroelectricity ; Phase boundary ; Refrigeration ; Adiabatic process ; Polarization (electrochemistry) ; Magnetic refrigeration ; Ferroelectric ceramics ; Phase transition ; Perovskite (structure) ; Electric field ; Optoelectronics ; Engineering physics ; Thermodynamics ; Composite material ; Chemical engineering ; Phase (matter) ; Magnetic field ; Dielectric ; Physical chemistry ; Magnetization ; Organic chemistry Ferroelectric and Piezoelectric Materials ; Multiferroics and related materials ; Dielectric materials and actuators
Authors: Farzan Shabani | Muhammad Ahmad | Satish Kumar | Savas Delikanli | Furkan Işık | Arinjoy Bhattacharya | A. Petrou | Hilmi Volkan Demir
Source: Chemistry of Materials (article, 2023-05-29)
Field: Materials Science — Materials Chemistry

Thermodynamic Silver Doping of Core/Shell Colloidal Quantum Wells Imparted with Paramagnetic Properties Emitting at Near-Infrared Two-dimensional (2D) core/shell nanoplatelets (NPLs) synthesized via the hot-injection method provide excellent thermal and chemical stability for high-temperature doping, where an expanded and flexible lattice is required. Here, a thermodynamic approach toward silver doping of these NPLs is proposed and demonstrated, which previously proved to be challenging due to the fast self-purification of the dopants with the introduction of the shell. Maintaining the doping procedure in the reversible regime ensured the integrity of the NPLs and allowed a high level of doping; however, the equilibrium condition is further complicated by environmental factors that affect the chemical activity of the cations and the surface composition of the NPLs. Two main deterioration mechanisms in the irreversible regime were observed: ZnS-shelled NPLs suffered preferential etching, while CdS-shelled NPLs underwent cleavage and fragmentation. Alloying of the shell minimized both mechanisms for CdZnS-shelled NPLs and preserved the metastable state of the NPLs, including their 2D shape and crystalline structure. Distribution of silver ions in the lattice of the NPLs directly affected the recombination dynamics and enabled fine-tuning of the near-infrared emission beside the exciton confinement. These silver-doped CdZnS-shelled NPLs are shown further to exhibit enhanced paramagnetic properties with Zeeman splitting and Brillouin-like bound-exciton polarization as a function of the magnetic field, critical for spintronic applications. Materials science ; Doping ; Dopant ; Exciton ; Chemical physics ; Optoelectronics ; Condensed matter physics ; Chemistry Quantum Dots Synthesis And Properties ; Perovskite Materials and Applications ; Chalcogenide Semiconductor Thin Films
Authors: Jamil Ur Rahman | Woo Hyun Nam | Yong‐Jae Jung | Jong Ho Won | Jong‐Min Oh | Nguyen Van Du | Gul Rahman | Víctor M. García‐Suárez | Ran He | Kornelius Nielsch | Jung Young Cho | Won‐Seon Seo | Jong Wook Roh | Sang‐il Kim | Soonil Lee | Kyu Hyoung Lee | Hyun‐Sik Kim | Weon Ho Shin
Source: Energy & environment materials (article, 2023-08-02)
Field: Materials Science — Materials Chemistry

Realizing High Thermoelectric Performance in n‐Type <scp>Se‐Free Bi<sub>2</sub>Te<sub>3</sub></scp> Materials by Spontaneous Incorporation of <scp>FeTe<sub>2</sub></scp> Nanoinclusions Bi 2 Te 3 ‐based materials have drawn much attention from the thermoelectric community due to their excellent thermoelectric performance near room temperature. However, the stability of existing n‐type Bi 2 (Te,Se) 3 materials is still low due to the evaporation energy of Se (37.70 kJ mol −1 ) being much lower than that of Te (52.55 kJ mol −1 ). The evaporated Se from the material causes problems in interconnects of the module while degrading the efficiency. Here, we have developed a new approach for the high‐performance and stable n‐type Se‐free Bi 2 Te 3 ‐based materials by maximizing the electronic transport while suppressing the phonon transport, at the same time. Spontaneously generated FeTe 2 nanoinclusions within the matrix during the melt‐spinning and subsequent spark plasma sintering is the key to simultaneous engineering of the power factor and lattice thermal conductivity. The nanoinclusions change the fermi level of the matrix while intensifying the phonon scattering via nanoparticles. With a fine‐tuning of the fermi level with Cu doping in the n‐type Bi 2 Te 3 –0.02FeTe 2 , a high power factor of ~41 × 10 −4 Wm −1 K −2 with an average zT of 1.01 at the temperature range 300–470 K are achieved, which are comparable to those obtained in n‐type Bi2(Te,Se) 3 materials. The proposed approach enables the fabrication of high‐performance n‐type Bi 2 Te 3 ‐based materials without having to include volatile Se element, which guarantees the stability of the material. Consequently, widespread application of thermoelectric devices utilizing the n‐type Bi 2 Te 3 ‐based materials will become possible. Spark plasma sintering ; Materials science ; Thermoelectric effect ; Thermoelectric materials ; Phonon ; Thermal conductivity ; Condensed matter physics ; Nanotechnology ; Optoelectronics ; Sintering ; Composite material ; Thermodynamics ; Physics Advanced Thermoelectric Materials and Devices ; Advanced Thermodynamics and Statistical Mechanics ; Thermal properties of materials
Authors: Shobana Sampath | Veena Sunderam | Yasasve Madhavan | Nellaiah Hariharan | Sathak Sameer Shaik Mohammed | Muthupandian Saravanan | L. Ansel Vishal
Source: Biomass Conversion and Biorefinery (article, 2023-04-10)
Field: Materials Science — Materials Chemistry

Facile green synthesis of zinc oxide nanoparticles using Artocarpus hirsutus seed extract: spectral characterization and in vitro evaluation of their potential antibacterial-anticancer activity Zinc ; Nuclear chemistry ; Nanoparticle ; Fourier transform infrared spectroscopy ; Scanning electron microscope ; Antibacterial activity ; Materials science ; Chemistry ; Nanotechnology ; Chemical engineering ; Organic chemistry ; Bacteria ; Biology Nanoparticles: synthesis and applications ; Medicinal Plants and Neuroprotection ; Pharmacological Effects of Medicinal Plants
Authors: Wanwen Liang | Zhijia Luo | Zewei Liu | Xingchuan Wei | Weiquan Cai
Source: Chemical Engineering Journal (article, 2023-11-07)
Field: Chemistry — Inorganic Chemistry

Nitrogen-doped carbon particles with distinctive ethylene adsorption selectivity for efficient ethylene/acetylene separation Acetylene ; Selectivity ; Adsorption ; Carbon fibers ; Pyrolysis ; Nitrogen ; Ethylene ; Chemical engineering ; Materials science ; Particle (ecology) ; Chemistry ; Organic chemistry ; Catalysis ; Composite material ; Composite number Metal-Organic Frameworks: Synthesis and Applications ; Covalent Organic Framework Applications ; Zeolite Catalysis and Synthesis
Authors: Sein Min | Juhee Baek | Ji-Su Kim | Hye Jin Jeong | Jean K. Chung | Keunhong Jeong
Source: JACS Au (article, 2023-10-10)
Field: Chemistry — Spectroscopy

Water-Compatible and Recyclable Heterogeneous SABRE Catalyst for NMR Signal Amplification A water-compatible and recyclable catalyst for nuclear magnetic resonance (NMR) hyperpolarization via signal amplification by reversible exchange (SABRE) was developed. The [Ir(COD)(IMes)Cl] catalyst was attached to a polymeric resin of bis(2-pyridyl)amine (heterogeneous SABRE catalyst, HET-SABRE catalyst), and it amplified the <sup>1</sup>H NMR signal of pyridine up to (-) 4455-fold (43.2%) at 1.4 T in methanol and (-) 50-fold (0.5%) in water. These are the highest amplification factors ever reported among HET-SABRE catalysts and for the first time in aqueous media. Moreover, the HET-SABRE catalyst demonstrated recyclability by retaining its activity in water after more than three uses. This newly designed polymeric resin-based heterogeneous catalyst shows great promise for NMR signal amplification for biomedical NMR and MRI applications in the future. Catalysis ; Chemistry ; Pyridine ; IMes ; Spin isomers of hydrogen ; Hyperpolarization (physics) ; Methanol ; Aqueous solution ; Materials science ; Nuclear magnetic resonance ; Nuclear magnetic resonance spectroscopy ; Organic chemistry ; Physics Advanced NMR Techniques and Applications ; Atomic and Subatomic Physics Research ; Electron Spin Resonance Studies
Authors: Pubali Kar | Chang‐Ming Wang | Chia-Li Liao | Ta-Sheng Chang | Wei‐Ssu Liao
Source: JACS Au (article, 2023-03-07)
Field: Chemistry — Inorganic Chemistry

Guiding Metal Organic Framework Morphology via Monolayer Artificial Defect-Induced Preferential Facet Selection Guiding metal organic framework (MOF) morphology, especially without the need for chemical additives, still remains a challenge. For the first time, we report a unique surface guiding approach in controlling the crystal morphology formation of zeolitic imidazole framework-8 (ZIF-8) and HKUST-1 MOFs on disrupted alkanethiol self-assembled monolayer (SAM)-covered Au substrates. Selective molecule removal is applied to generate diverse SAM matrices rich in artificial molecular defects in a monolayer to direct the dynamic crystal growth process. When a 11-mercaptoundecanol alkanethiol monolayer is ruptured, the hydroxyl tail groups of surface residue molecules act as nucleating sites by coordination with precursor metal ions. Meanwhile, the exposed alkane chain backbones stabilize a particular facet of MOF nuclei in the dynamic growth by slowing down their crystal growth rates along a specific direction. The competitive formation between the [110] and [100] planes of ZIF-8 ultimately regulates the crystal shapes from rhombic dodecahedron, truncated rhombic dodecahedron, and truncated cube to cube. Similarly, changeable morphologies of HKUST-1 crystals are also achieved from cube and tetrakaidekahedron to octahedron, originating from the competitive selection between the [100] and [111] planes. In addition to the artificial matrix preferred orientation of initial nucleation, parameters such as temperature also play a crucial role in the resulting crystal morphology. Standing on the additive-free MOF crystal morphology growth control, porous architectures prepared in this approach can act as templates for ligand-free metal (Au, Ag, and Cu) nanocluster synthesis. The nanocluster-embedded MOF structures represent distinct crystal morphology-dependent optical properties, and interestingly, their fluorescence emission can be highly enhanced by facet-induced nanocluster packing alignments. These findings not only provide a unique thought on MOF crystal morphology guidance but also pave a new route for the accompanied property investigation and further application. Dodecahedron ; Nucleation ; Monolayer ; Crystallography ; Materials science ; Crystal (programming language) ; Nanotechnology ; Metal-organic framework ; Crystal growth ; Molecule ; Chemical engineering ; Chemistry ; Organic chemistry ; Adsorption Metal-Organic Frameworks: Synthesis and Applications ; Nanocluster Synthesis and Applications ; Advanced Nanomaterials in Catalysis