jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Vivian F. Lotfy | Altaf H. Basta
Source: Scientific Reports (article, 2024-07-02)
Field: Chemistry — Spectroscopy

Enhancing the valorization of pulping black liquors in production effective aerogel–carbon nanostructure as adsorbents toward cationic and ionic dyes This work deals with promoting the efficiency of removing the cationic and ionic dyes by new aerogel-carbon nanostructures. For cleaner production the rice straw-pulping black liquors, which regards serious environmental risk during routine disposing, is used in preparing the aerogel precursors. These aerogels (AGBs) depend on using pulping black liquor in hybrid with resorcinol and the less carcinogenic formaldehyde butyraldehyde. Black liquors from five pulping processes are used, Elemental, thermogravimetric (TGA and DTG), and FTIR-ATR analyses are used to characterize the carbon precursors. While their adsorption behavior toward cationic and anionic dyes are accessed via iodine-value, adsorption capacity and kinetic models, textural characterization, and SEM. The TGA measurements reveal that AGBs from BLs of neutral sulfite and soda-borohydride pulping reagents have higher activation and degradation energies than other aerogels. In terms of cationic and anionic dyes adsorption as well as textural characterization, the AGB-CNSs surpass that made from BLs. The discarded KOH/NH<sub>4</sub>OH black liquor is used to synthesize the best aerogel precursor for producing cationic methylene blue dye (MB) adsorbent, where it provides an adsorption capacity 242.1 mg/g. The maximum anionic brilliant blue dye (BB) adsorption capacity, 162.6 mg/g, is noticed by Kraft BL-aerogel-CNSs. These finding data overcome the literature carbon adsorbents based on lignin precursors. All examined CNSs toward MB dye follow the Langmuir adsorption equilibrium; while primarily the Freundlich model for BB dye. The pseudo-second-order kinetic model well fits the adsorption kinetics of investigated AGB-CNSs. The textural characterization and SEM revealed a mixture of mesoporous and micro porous features in the CNSs. Cationic polymerization ; Adsorption ; Aerogel ; Chemistry ; Freundlich equation ; Chemical engineering ; Organic chemistry ; Nuclear chemistry ; Materials science ; Nanotechnology Aerogels and thermal insulation ; Adsorption and biosorption for pollutant removal ; Advanced Cellulose Research Studies
Authors: Paula Fanlo | Alaitz Ruiz de Luzuriaga | Gorka Albizu | Marta Ximenis | Alaitz Rekondo | Hans J. Grande | Haritz Sardón
Source: RSC Applied Polymers (article, 2024-01-01)
Field: Materials Science — Polymers and Plastics

Unraveling the thermal stability of aromatic disulfide epoxy vitrimers: a comprehensive study using principal component analysis (PCA) This study combines 1 H NMR and chemometrics to determine optimal processing conditions for aromatic disulfide-based vitrimers, revealing a correlation between model reactions and vitrimer networks. Principal component analysis ; Epoxy ; Thermal stability ; Component (thermodynamics) ; Chemistry ; Disulfide bond ; Chemical engineering ; Materials science ; Computer science ; Organic chemistry ; Engineering ; Thermodynamics ; Biochemistry ; Physics ; Artificial intelligence Synthesis and properties of polymers ; Organic Electronics and Photovoltaics
Authors: Maria Batool | Muhammad Nadeem Zafar
Source: Materials Advances (article, 2024-11-14)
Field: Materials Science — Materials Chemistry

Synthesis of a BiSbS <sub>3</sub> @BiSbO <sub>4</sub> /CNH nanocomposite for wastewater treatment and electrochemical application A carbon nanohorn (CNH)-modified BiSbS 3 /BiSbO 4 (BiSbS 3 @BiSbO 4 /CNH) nanocomposite was synthesized by hydrothermal method to remove pentachlorophenol (5-CP) via photocatalysis. Nanocomposite ; Electrochemistry ; Sewage treatment ; Wastewater ; Pulp and paper industry ; Materials science ; Environmental science ; Chemistry ; Nanotechnology ; Environmental engineering ; Electrode ; Engineering MXene and MAX Phase Materials ; Gas Sensing Nanomaterials and Sensors ; Scientific and Engineering Research Topics
Authors: Paweł Repetowski | Marta Warszyńska | Anna Kostecka | Barbara Pucelik | Agata Barzowska | Atefeh Emami | Ümit İşçi | Fabienne Dumoulin | J. Da̧browski
Source: ACS Applied Materials & Interfaces (article, 2024-09-06)
Field: Materials Science — Materials Chemistry

Synthesis, Photo-Characterizations, and Pre-Clinical Studies on Advanced Cellular and Animal Models of Zinc(II) and Platinum(II) Sulfonyl-Substituted Phthalocyanines for Enhanced Vascular-Targeted Photodynamic Therapy Two phthalocyanine derivatives tetra-peripherally substituted with <i>tert</i>-butylsulfonyl groups and coordinating either zinc(II) or platinum(II) ions have been synthesized and subsequently investigated in terms of their optical and photochemical properties, as well as biological activity in cellular, tissue-engineered, and animal models. Our research has revealed that both synthesized phthalocyanines are effective generators of reactive oxygen species (ROS). <b>PtSO</b><sub><b>2</b></sub><b><i>t</i>Bu</b> demonstrated an outstanding ability to generate singlet oxygen (Φ<sub>Δ</sub> = 0.87-0.99), while <b>ZnSO</b><sub><b>2</b></sub><b><i>t</i>Bu</b> in addition to <sup>1</sup>O<sub>2</sub> (Φ<sub>Δ</sub> = 0.45-0.48) generated efficiently other ROS, in particular ·OH. Considering future biomedical applications, the affinity of the tested phthalocyanines for biological membranes (partition coefficient; log <i>P</i><sub>ow</sub>) and their primary interaction with serum albumin were also determined. To facilitate their biological administration, a water-dispersible formulation of these phthalocyanines was developed using Pluronic triblock copolymers to prevent self-aggregation and improve their delivery to cancer cells and tissues. The results showed a significant increase in cellular uptake and phototoxicity when phthalocyanines were incorporated into the customizable polymeric micelles. Moreover, the improved distribution in the body and photodynamic efficacy of the encapsulated phthalocyanines were investigated in hiPSC-delivered organoids and BALB/c mice bearing CT26 tumors. Both photosensitizers exhibit strong antitumor activity. Notably, vascular-targeted photodynamic therapy (V-PDT) led to complete tumor eradication in 84% of <b>ZnSO</b><sub><b>2</b></sub><b><i>t</i>Bu</b> and 100% of <b>PtSO</b><sub><b>2</b></sub><b><i>t</i>Bu-</b>treated mice, and no recurrence has so far been observed for up to five months after treatment. In the case of PtSO<sub>2</sub><i>t</i>Bu, the effect was significantly stronger, offering a wider range of light doses suitable for achieving effective PDT. Sulfonyl ; Photodynamic therapy ; Materials science ; Zinc ; Platinum ; Phthalocyanine ; Tetra ; Nanotechnology ; Combinatorial chemistry ; Catalysis ; Organic chemistry ; Medicinal chemistry ; Chemistry Porphyrin and Phthalocyanine Chemistry ; Photodynamic Therapy Research Studies ; Nanoplatforms for cancer theranostics
Authors: Min Zhang | Xiao‐Lei Shi | Yuanqing Mao | Meng Li | Raza Moshwan | Tianyi Cao | Wenyi Chen | Liang‐Cao Yin | Wanyu Lyu | Yongqi Chen | Siqi Liu | Wei‐Di Liu | Qingfeng Liu | G.H. Tang | Zhi‐Gang Chen
Source: Advanced Functional Materials (article, 2024-08-29)
Field: Materials Science — Materials Chemistry

High‐Performance GeSe‐Based Thermoelectrics via Cu‐Doping Abstract Rhombohedral GeSe is a promising p‐type thermoelectric material, noted for its low toxicity, environmental friendliness, and greater affordability compared with tellurides. However, its thermoelectric performance still requires further enhancement for practical applications. In this work, a highly competitive peak figure of merit ( ZT ) of 1.24 at 623 K for p‐type polycrystalline Ge 0.895 Cu 0.005 Se 0.9 (AgBiTe 2 ) 0.1 , along with a high average ZT of 0.74 between 323 K and 623 K is reported. Comprehensive micro/nanostructural characterization reveals that alloying with AgBiTe 2 and doping with Cu successfully induce dense point defects, secondary Ag 2 Te phases, and various nanoprecipitates in the GeSe matrix. These abundant crystalline and lattice defects result in strong phonon scattering, leading to an ultra‐low lattice thermal conductivity of 0.35 W m −1 K −1 at 623 K. Moreover, Cu doping enhances carrier mobility, promoting decoupling between carriers and phonons. This allows for low thermal conductivity and high power factor coexistence to achieve a high ZT . Additionally, with a temperature difference of 325 K, the theoretical energy conversion efficiency reaches up to 8.5%, indicating great potential for medium‐temperature device applications. This work suggests that Cu doping is an effective strategy for achieving high thermoelectric performance in rhombohedral GeSe‐based materials. Materials science ; Thermoelectric effect ; Thermoelectric materials ; Doping ; Phonon scattering ; Crystallite ; Figure of merit ; Phonon ; Condensed matter physics ; Thermal conductivity ; Optoelectronics ; Composite material ; Metallurgy ; Thermodynamics Advanced Thermoelectric Materials and Devices ; Chalcogenide Semiconductor Thin Films ; Quantum Dots Synthesis And Properties
Authors: Hezhao Bai | Guohua Teng | Chen Zhang | Jingyi Yang | Wenzhi Yang | Fei Tian
Source: Journal of Separation Science (review, 2024-07-01)
Field: Chemistry — Analytical Chemistry

Magnetic materials as adsorbents for the pre‐concentration and separation of active ingredients from herbal medicine Herbal medicine (HM) is crucial in disease management and contains complex compounds with few active pharmacological ingredients, presenting challenges in quality control of raw materials and formulations. Effective separation, identification, and analysis of active components are vital for HM efficacy. Traditional methods like liquid-liquid extraction and solid-phase extraction are time-consuming and environmentally concerning, with limitations such as sorbent issues, pressure, and clogging. Magnetic solid-phase extraction uses magnetic sorbents for targeted analyte separation and enrichment, offering rapid, pressure-free separation. However, inorganic magnetic particles' aggregation and oxidation, as well as lack of selectivity, have led to the use of various coatings and modifications to enhance specificity and selectivity for complex herbal samples. This review delves into magnetic composites in HM pretreatment, specifically focusing on encapsulated or modified magnetic nanoparticles and materials like silica, ionic liquids, graphene family derivatives, carbon nanotubes, metal-organic frameworks, covalent organic frameworks, and molecularly imprinted polymers. Active ingredient ; Adsorption ; Chromatography ; Chemistry ; Traditional medicine ; Organic chemistry ; Medicine ; Pharmacology Heavy Metals in Plants ; Drug Solubulity and Delivery Systems ; Analytical Chemistry and Chromatography
Authors: Panayiota Adamou | Silvio Bellomi | Eleana Harkou | Xiaowei Chen | Juan J. Delgado | Nikolaos Dimitratos | George Manos | Alberto Villa | Achilleas Constantinou
Source: Chemical Engineering Journal (article, 2024-05-31)
Field: Materials Science — Materials Chemistry

Hydrous hydrazine decomposition over Rh/Al2O3 catalyst: Experimental and CFD studies Computational fluid dynamics ; Hydrazine (antidepressant) ; Catalysis ; Hydrogen production ; Decomposition ; Hydrogen ; Chemical engineering ; Work (physics) ; Chemistry ; Process engineering ; Fossil fuel ; Environmental science ; Materials science ; Waste management ; Thermodynamics ; Mechanical engineering ; Engineering ; Organic chemistry ; Physics ; Chromatography Catalytic Processes in Materials Science ; Hydrogen Storage and Materials ; Catalysts for Methane Reforming
Authors: Sai Zhang | Qingkai Yuan | Guigen Li
Source: RSC Advances (article, 2024-01-01)
Field: Materials Science — Materials Chemistry

New multiple-layered 3D polymers showing aggregation-induced emission and polarization An exceptional achiral and chiral multilayer 3D polymer has been created and controlled by uniform and distinct aromatic chromophore units that are multiply sandwiched by naphthyl berths. In order to put together this assembly, it was necessary to search for new catalytic Suzuki-Miyaura polycouplings among various catalytic systems, monomers, and catalysts. Gel Permeation Chromatography (GPC) was able to verify the presence of many framework layers. The resulting achiral and chiral polymers displayed notable optical characteristic. Aggregation-induced emission ; Polarization (electrochemistry) ; Polymer ; Materials science ; Chemistry ; Chemical engineering ; Composite material ; Optics ; Physics ; Physical chemistry ; Engineering ; Fluorescence Luminescence and Fluorescent Materials ; Supramolecular Self-Assembly in Materials ; Photochromic and Fluorescence Chemistry
Authors: Qi Ai | Kangjun Lan | Lin Li | Zugang Liu | Xiaoguang Hu
Source: Advanced Science (review, 2024-11-03)
Field: Materials Science — Materials Chemistry

Beyond Photochromism: Alternative Stimuli to Trigger Diarylethenes Switching Diarylethenes (DAEs) are typical photochemically reversible type (P-type) photochromic materials with excellent thermal stability and high fatigue resistance and are widely exploited as photo-switches for various applications in molecular devices, data storage, photoresponsive materials, and bioimaging, etc. In recent years, there is an increasing number of reports using heat, acid, electrochemistry, etc. to drive the isomerization reaction of DAEs. The response to two or more different stimuli enables multi-functionality within a single DAE molecule, which would facilitate complex logic-gate operations, multimode data storage, and increased information density. Herein, the recent advances in DAE systems utilizing stimuli "beyond photo" to trigger the isomerization processes from three perspectives: acidochromism, thermochromism, and electrochromism are reviewed. Emphasis is placed on the molecule design strategies and the underlying mechanisms for cyclization and cycloreversion processes addressed by the alternative stimulus. Then the noticeable applications made in multi-stimuli responsive DAE systems are summarized. Additionally, the challenges and opportunities of DAE switches driven by stimuli "beyond photo" in the future are also discussed. Photochromism ; Molecular switch ; Isomerization ; Electrochromism ; Materials science ; Thermochromism ; Diarylethene ; Computer science ; Photoisomerization ; Nanotechnology ; Information storage ; Molecule ; Chemistry ; Electrode ; Organic chemistry Photochromic and Fluorescence Chemistry ; Photoreceptor and optogenetics research ; Polydiacetylene-based materials and applications
Authors: Xinyu Deng | Zhi Zhang | Ting Lei
Source: JACS Au (review, 2024-10-09)
Field: Materials Science — Materials Chemistry

Integrated Materials Design and Process Engineering for n-Type Polymer Thermoelectrics Polymer thermoelectrics (TEs) have attracted increasing interest in recent years, owing to their great potential in intimate integration with wearable electronics for powering small electronics/sensors and personal temperature regulation. Over the past few decades, substantial progress has been made in enhancing polymer TE performance. However, the electrical conductivity and power factor of most n-doped polymers are about an order of magnitude lower than those of their p-type counterparts, impeding the development of highly efficient polymer TE devices. In addition, unlike well-studied inorganic materials, the complex charge transport mechanism and polymer-dopant interactions in polymer TE materials have hindered a comprehensive understanding of the structure-property relationships. This Perspective aims to survey recent achievements in understanding the charge transport mechanism and selectively provide some critical insights into molecular design and process engineering for n-type polymer TEs. We also highlight the great potential of polymer TEs in wearable electronics and offer an outlook for future development. Nanotechnology ; Electronics ; Thermoelectric materials ; Materials science ; Dopant ; Conductive polymer ; Polymer ; Engineering physics ; Doping ; Electrical engineering ; Engineering ; Optoelectronics ; Thermal conductivity ; Composite material Advanced Thermoelectric Materials and Devices ; Conducting polymers and applications ; Organic Electronics and Photovoltaics
Authors: Alyeh Abdollahi | Hamid Reza Aghayan | Zahra Mousivand | Hamidreza Motasadizadeh | Samane Maghsoudian | Mohammadmohsen Abdorashidi | Seyed Nasser Ostad | Bagher Larijani | Mohammad Raoufi | Hamid Akbari Javar
Source: Stem Cell Research & Therapy (article, 2024-08-15)
Field: Materials Science — Biomaterials

Chitosan based extruded nanofibrous bioscaffold for local delivery of mesenchymal stem cells to improve diabetic wound healing The utilization of MSCs in a nanofibrous biomaterial framework demonstrates significant promise, providing a novel avenue for advancing wound care and diabetic ulcer management. Mesenchymal stem cell ; Wound healing ; Stem cell ; Chitosan ; Regeneration (biology) ; Medicine ; Cell biology ; Chemistry ; Biology ; Surgery Electrospun Nanofibers in Biomedical Applications ; Wound Healing and Treatments ; Mesenchymal stem cell research
Authors: Waygen Thor | Hei‐Yui Kai | Yik‐Hoi Yeung | Yue Wu | Tsz‐Lam Cheung | Leo K. B. Tam | Yonghong Zhang | Loı̈c J. Charbonnière | Peter A. Tanner | Ka‐Leung Wong
Source: JACS Au (article, 2024-08-20)
Field: Materials Science — Materials Chemistry

Unearthing the Real-Time Excited State Dynamics from Antenna to Rare Earth Ions Using Ultrafast Transient Absorption The conventional energy transfer pathway in organic lanthanide complexes is purported to be from the excited singlet state of the chromophore to the triplet state and subsequently directly to the emitting state of the trivalent lanthanide ion. In this work, we found that the energy transfer occurs from the triplet state to the nearest energy level, instead of directly to the emitting state of the lanthanide ion. The triplet decay rate for different lanthanide ions follows an energy gap law from the triplet level to the receiving level of the lanthanide ion. Three different categories of complexes were synthesized and inspected using different techniques, demonstrating the universality of our findings. This work renews the insights to conventional findings, highlighting the importance of the energy gap between the triplet state and the nearest lanthanide energy level in optimization of light harvesting. The rationale of ligand design of chromophores should be reconsidered, leading to various applications of lanthanide complexes with enhanced quantum yield and brightness. Lanthanide ; Chromophore ; Triplet state ; Excited state ; Ion ; Ultrafast laser spectroscopy ; Chemistry ; Materials science ; Photochemistry ; Chemical physics ; Atomic physics ; Spectroscopy ; Physics ; Organic chemistry Lanthanide and Transition Metal Complexes ; Luminescence and Fluorescent Materials ; Organic Light-Emitting Diodes Research
Authors: Hui Zhang | Xingwu Zhai | Xin Cao | Zhihao Liu | Xinfeng Tang | Zhihong Hu | Hang Wang | Zhandong Wang | Yang Xu | Wei He | Wei Zheng | Min Zhou | ZhengMing Sun
Source: Energy & environment materials (article, 2024-01-31)
Field: Materials Science — Materials Chemistry

Phase Engineering of <scp>MXene</scp> Derivatives Via Molecular Design for High‐Rate Sodium‐Ion Batteries Since 2019, research into MXene derivatives has seen a dramatic rise; further progress requires a rational design for specific functionality. Herein, through a molecular design by selecting suitable functional groups in the MXene coating, we have implemented the dual N doping of the derivatives, nitrogen‐doped TiO 2 @nitrogen‐doped carbon nanosheets (N‐TiO 2 @NC), to strike a balance between the active anatase TiO 2 at low temperatures, and carbon activation at high temperatures. The NH 3 reduction environment generated at 400 °C as evidenced by the in situ pyrolysis SVUV‐PIMS process is crucial for concurrent phase engineering. With both electrical conductivity and surface Na + availability, the N‐TiO 2 @NC achieves higher interface capacitive‐like sodium storage with long‐term stability. More than 100 mAh g −1 is achieved at 2 A g −1 after 5000 cycles. The proposed design may be extended to other MXenes and solidify the growing family of MXene derivatives for energy storage. MXenes ; Materials science ; Rational design ; Carbon fibers ; Anatase ; Chemical engineering ; Pyrolysis ; Nitrogen ; Sodium ; Phase (matter) ; Nanotechnology ; Chemistry ; Catalysis ; Organic chemistry ; Composite number ; Photocatalysis ; Composite material MXene and MAX Phase Materials ; Advancements in Battery Materials ; Nanomaterials for catalytic reactions
Authors: Manuel Carrera | I. Such-Basáñez | J.P. Marco-Lozar | Agustín Bueno‐López | Eduardo Vilaplana‐Ortego | Iván da Silva | Delia Bautista | Alberto Fernández‐Alarcón | Joaquín Calbo | Enrique Ortı́ | David Curiel
Source: Angewandte Chemie International Edition (article, 2024-08-14)
Field: Chemistry — Inorganic Chemistry

Rational Design of 7‐Azaindole‐Based Robust Microporous Hydrogen‐Bonded Organic Framework for Gas Sorption 7-Azaindole has been integrated as building block with complementary N-H⋅⋅⋅N hydrogen bonding sites for the synthesis of a tetrahedral molecular tecton, namely tetra(α-carbolin-6-yl)methane, TACM. The self-assembly of this molecule results in a 3D hydrogen-bonded organic framework (HOF). This supramolecular structure constitutes a crystalline microporous material with an extraordinary thermal and chemical robustness. Single crystal X-ray diffraction reveals how the five-fold catenation of diamonoid systems, stabilized by hydrogen bonds and π-π interactions, form an interpenetrated network with monodimensional channels. The structural features of the crystalline material are also observed by transmission electron microscopy (TEM). Additionally, the microporosity of the activated TACM-HOF is characterized by gas sorption (N<sub>2</sub>, CO<sub>2</sub>, CH<sub>4</sub> and H<sub>2</sub>) experiments performed at different pressures. A selective adsorption is observed for CO<sub>2</sub> uptake and TACM-HOF also presents a good adsorption capacity for H<sub>2</sub> among supramolecular organic frameworks. Microporous material ; Sorption ; Supramolecular chemistry ; Hydrogen bond ; Catenation ; Crystal engineering ; Molecule ; Materials science ; Crystallography ; Crystal structure ; Chemistry ; Chemical engineering ; Physical chemistry ; Organic chemistry ; Composite material Metal-Organic Frameworks: Synthesis and Applications ; Covalent Organic Framework Applications ; Supramolecular Chemistry and Complexes