jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Iolanda Di Bernardo | Joan Ripoll-Sau | Jose Ángel Silva-Guillén | F. Calleja | Cosme G. Ayani | Rodolfo Miranda | Enric Cañadell | Manuela Garnica | Amadeo L. Vázquez de Parga
Source: Small (article, 2023-04-08)
Field: Materials Science — Materials Chemistry

Metastable Polymorphic Phases in Monolayer TaTe<sub>2</sub> Polymorphic phases and collective phenomena-such as charge density waves (CDWs)-in transition metal dichalcogenides (TMDs) dictate the physical and electronic properties of the material. Most TMDs naturally occur in a single given phase, but the fine-tuning of growth conditions via methods such as molecular beam epitaxy (MBE) allows to unlock otherwise inaccessible polymorphic structures. Exploring and understanding the morphological and electronic properties of new phases of TMDs is an essential step to enable their exploitation in technological applications. Here, scanning tunneling microscopy (STM) is used to map MBE-grown monolayer (ML) TaTe<sub>2</sub> . This work reports the first observation of the 1H polymorphic phase, coexisting with the 1T, and demonstrates that their relative coverage can be controlled by adjusting synthesis parameters. Several superperiodic structures, compatible with CDWs, are observed to coexist on the 1T phase. Finally, this work provides theoretical insight on the delicate balance between Te…Te and Ta-Ta interactions that dictates the stability of the different phases. The findings demonstrate that TaTe<sub>2</sub> is an ideal platform to investigate competing interactions, and indicate that accurate tuning of growth conditions is key to accessing metastable states in TMDs. Metastability ; Monolayer ; Scanning tunneling microscope ; Molecular beam epitaxy ; Chemical physics ; Charge density wave ; Materials science ; Phase transition ; Phase (matter) ; Transition metal ; Nanotechnology ; Quantum tunnelling ; Epitaxy ; Crystallography ; Condensed matter physics ; Optoelectronics ; Chemistry ; Physics ; Layer (electronics) 2D Materials and Applications ; Quantum Dots Synthesis And Properties ; Molecular Junctions and Nanostructures
Authors: Wei Zhang | Michael J. Bojdys | Nicola Pinna
Source: Angewandte Chemie International Edition (article, 2023-03-06)
Field: Chemistry — Inorganic Chemistry

A Universal Synthesis Strategy for Tunable Metal‐Organic Framework Nanohybrids** Metal-organic frameworks (MOFs) with encapsulated nanoparticles (NPs) enjoy a vastly expanded application potential in catalysis, filtration, and sensing. The selection of particular modified core-NPs has yielded partial successes in overcoming lattice mismatch. However, restrictions on the choice of NPs not only limit the diversity, but also affect the properties of the hybrid materials. Here, we show a versatile synthesis strategy using a representative set of seven MOF-shells and six NP-cores that are fine-tuned to incorporate from single to hundreds of cores in mono-, bi-, tri- and quaternary composites. This method does not require the presence of any specific surface structures or functionalities on the pre-formed cores. Our key point is to regulate the diffusion rate of alkaline vapors that deprotonate organic linkers and trigger the controlled MOF-growth and encapsulation of NPs. This strategy is expected to pave the way for the exploration of more sophisticated MOF-nanohybrids. Nanotechnology ; Metal-organic framework ; Materials science ; Nanoparticle ; Catalysis ; Chemistry ; Organic chemistry ; Adsorption Metal-Organic Frameworks: Synthesis and Applications ; Advanced Nanomaterials in Catalysis ; Dendrimers and Hyperbranched Polymers
Authors: Youxin Fu | Kefan Wu | Georgios Alachouzos | Nadja A. Simeth | Thomas Freese | Michał Falkowski | Wiktor Szymański | Hong Zhang | Ben L. Feringa
Source: Advanced Functional Materials (article, 2023-09-06)
Field: Materials Science — Materials Chemistry

Efficient, Near‐Infrared Light‐Induced Photoclick Reaction Enabled by Upconversion Nanoparticles Abstract Photoclick reactions combine the selectivity of classical click chemistry with the high precision and spatiotemporal control afforded by light, finding diverse utility in surface customization, polymer conjugation, photocross‐linking, protein labeling, and bioimaging. Nonetheless, UV light, pivotal in prevailing photoclick reactions, poses issues, especially in biological contexts, due to its limited tissue penetration and cell‐toxic nature. Herein, a reliable and versatile strategy of activating the photoclick reactions of 9,10‐phenanthrenequinones ( PQ s) with electron‐rich alkenes ( ERA s) with near infrared (NIR) light transduced by spectrally and structurally customized upconversion nanoparticles ( UCNP s) is introduced. Under NIR irradiation, the UCNP s become UV/blue nanoemitters uniformly distributed in the reaction system. Enabled by the customized UCNP s, 800 or 980 nm light effectively activates the photocycloaddition reactions via radiative energy transfer in both general and triplet–triplet energy transfer (TTET)‐mediated PQ‐ERA systems. In particular, the novel sandwich structure UCNP s achieve the click reaction with up to 76% production yield in 10 min under NIR light irradiation. Meanwhile, the tricky side effect of photoclick product absorption‐induced quenching is successfully circumvented from the fine‐tuning of the upconversion spectrum. Moreover, through‐tissue irradiation experiments, the authors show that the UCNP ‐ PQ‐ERA reaction unlocks the full potential of photoclick reactions for in vivo applications. Photon upconversion ; Photochemistry ; Materials science ; Irradiation ; Quenching (fluorescence) ; Nanoparticle ; Near-infrared spectroscopy ; Fluorescence ; Nanotechnology ; Light energy ; Optoelectronics ; Chemistry ; Optics ; Doping Photochromic and Fluorescence Chemistry ; Click Chemistry and Applications ; Nanoplatforms for cancer theranostics
Authors: Sunny R. Gurav | Aniket R. Sonkawade | Maqsood R. Waikar | Umesh V. Shembade | A.V. Moholkar | S. K. Chakarvarti | Rajendra G. Sonkawade
Source: Colloids and Surfaces A Physicochemical and Engineering Aspects (article, 2023-11-24)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Fine-tuning interconnected leaf-like architecture of Co-MOFs by varying linker concentrations for solid-state supercapacitors Linker ; Supercapacitor ; Electrode ; Electrochemistry ; Materials science ; Porosity ; X-ray photoelectron spectroscopy ; Capacitance ; Chemical engineering ; Diffusion ; Power density ; Nanotechnology ; Chemistry ; Composite material ; Power (physics) ; Computer science ; Physical chemistry Supercapacitor Materials and Fabrication ; Advanced battery technologies research ; MXene and MAX Phase Materials
Authors: Renato Rabelo | Luminita Marilena Toma | Nicolás Moliner | Miguel Julve | Francesc Lloret | Mario Inclán | Enrique García‐España | Jorge Pasán | Rafael Ruiz-Garcı́a | Joan Cano
Source: Chemical Science (article, 2023-01-01)
Field: Materials Science — Electronic, Optical and Magnetic Materials

pH-Switching of the luminescent, redox, and magnetic properties in a spin crossover cobalt(<scp>ii</scp>) molecular nanomagnet The ability of mononuclear first-row transition metal complexes as dynamic molecular systems to perform selective functions under the control of an external stimulus that appropriately tunes their properties may greatly impact several domains of molecular nanoscience and nanotechnology. This study focuses on two mononuclear octahedral cobalt(ii) complexes of formula {[Co<sup>II</sup>(HL)<sub>2</sub>][Co<sup>II</sup>(HL)L]}(ClO<sub>4</sub>)<sub>3</sub>·9H<sub>2</sub>O (1) and [Co<sup>II</sup>L<sub>2</sub>]·5H<sub>2</sub>O (2) [HL = 4'-(4-carboxyphenyl)-2,2':6',2''-terpyridine], isolated as a mixed protonated/hemiprotonated cationic salt or a deprotonated neutral species. This pair of pH isomers constitutes a remarkable example of a dynamic molecular system exhibiting reversible changes in luminescence, redox, and magnetic (spin crossover and spin dynamics) properties as a result of ligand deprotonation, either in solution or solid state. In this last case, the thermal-assisted spin transition coexists with the field-induced magnetisation blockage of "faster" or "slower" relaxing low-spin Co<sup>II</sup> ions in 1 or 2, respectively. In addition, pH-reversible control of the acid-base equilibrium among dicationic protonated, cationic hemiprotonated, and neutral deprotonated forms in solution enhances luminescence in the UV region. Besides, the reversibility of the one-electron oxidation of the paramagnetic low-spin Co<sup>II</sup> into the diamagnetic low-spin Co<sup>III</sup> ion is partially lost and completely restored by pH decreasing and increasing. The fine-tuning of the optical, redox, and magnetic properties in this novel class of pH-responsive, spin crossover molecular nanomagnets offers fascinating possibilities for advanced multifunctional and multiresponsive magnetic devices for molecular spintronics and quantum computing such as pH-effect spin quantum transformers. Protonation ; Deprotonation ; Chemistry ; Spin crossover ; Terpyridine ; Redox ; Crystallography ; Spin states ; Luminescence ; Supramolecular chemistry ; Molecular switch ; Photochemistry ; Ion ; Molecule ; Materials science ; Inorganic chemistry ; Metal ; Crystal structure ; Organic chemistry Magnetism in coordination complexes ; Lanthanide and Transition Metal Complexes ; Porphyrin and Phthalocyanine Chemistry
Authors: Xu Li | Yan Jin | Nansong Zhu | Long Yi Jin
Source: Polymers (article, 2023-11-27)
Field: Chemistry — Organic Chemistry

Applications of Supramolecular Polymers Generated from Pillar[n]arene-Based Molecules Supramolecular chemistry enables the manipulation of functional components on a molecular scale, facilitating a "bottom-up" approach to govern the sizes and structures of supramolecular materials. Using dynamic non-covalent interactions, supramolecular polymers can create materials with reversible and degradable characteristics and the abilities to self-heal and respond to external stimuli. Pillar[<i>n</i>]arene represents a novel class of macrocyclic hosts, emerging after cyclodextrins, crown ethers, calixarenes, and cucurbiturils. Its significance lies in its distinctive structure, comparing an electron-rich cavity and two finely adjustable rims, which has sparked considerable interest. Furthermore, the straightforward synthesis, uncomplicated functionalization, and remarkable properties of pillar[<i>n</i>]arene based on supramolecular interactions make it an excellent candidate for material construction, particularly in generating interpenetrating supramolecular polymers. Polymers resulting from supramolecular interactions involving pillar[<i>n</i>]arene find potential in various applications, including fluorescence sensors, substance adsorption and separation, catalysis, light-harvesting systems, artificial nanochannels, and drug delivery. In this context, we provide an overview of these recent frontier research fields in the use of pillar[<i>n</i>]arene-based supramolecular polymers, which serves as a source of inspiration for the creation of innovative functional polymer materials derived from pillar[<i>n</i>]arene derivatives. Pillar ; Supramolecular chemistry ; Supramolecular polymers ; Molecule ; Materials science ; Polymer ; Nanotechnology ; Polymer science ; Chemistry ; Organic chemistry ; Engineering Supramolecular Chemistry and Complexes ; Supramolecular Self-Assembly in Materials ; Molecular Sensors and Ion Detection
Authors: Weijie Zhang | Caihua Shu | Haishuai Cui | Quan Wan | Chak‐Tong Au | Bing Yi | Hai Yang
Source: Macromolecular Rapid Communications (review, 2023-03-01)
Field: Materials Science — Materials Chemistry

Carbazolic Conjugated Microporous Polymers for Photocatalytic Organic Transformations Heterogeneous photocatalysis have been deemed as a versatile and colorful platform for exploring efficient transformation systems. Henceforth, the design of photocatalysts underpins a wide range of research interests. By virtue of synthetic versatility, stability, non-toxicity, purely organic properties, tunable semiconductive structures, and remarkable visible-light absorbance, conjugated microporous polymers (CMPs) have emerged as an attractive new class of semiconductor materials that show great potential for tackling important energy and environmental challenges. Over the past decade, immense efforts have been devoted toward the construction of CMPs-based photocatalysts for versatile photocatalytic transformations. This review aims to summarize the latest representative advances in the field of carbazolic CMPs, focusing on various design strategies for the construction of tailor-made skeletons that have direct impact on their charge dynamics and thus photocatalytic performances, especially on their specific photocatalytic efficiency for organic transformations. Scrutinizing the photocatalytic features and elucidating the related design principles, it is fully described how structure modification of polycarbazoles could have an effect on optical properties, and thus on photocatalytic performance. Furthermore, the bottlenecks that need to be addressed, and the future research directions of CMPs are identified in the area of photocatalysis. Photocatalysis ; Conjugated microporous polymer ; Nanotechnology ; Microporous material ; Materials science ; Conjugated system ; Polymer ; Chemistry ; Organic chemistry ; Catalysis Covalent Organic Framework Applications ; Advanced Photocatalysis Techniques ; Metal-Organic Frameworks: Synthesis and Applications
Authors: Dhruvi Patel | Ketan Kuperkar | Shin‐ichi Yusa | Pratap Bahadur
Source: Drugs and Drug Candidates (article, 2023-11-22)
Field: Chemistry — Organic Chemistry

Nanoscale Self-Assemblies from Amphiphilic Block Copolymers as Proficient Templates in Drug Delivery This review article emphasizes the current enlargements in the formation and properties of the various nanostructured aggregates resulting from the self-assembly of a variety of block copolymers (BCPs) in an aqueous solution. The development of the different polymerization techniques which produce polymers with a desired predetermined molecular weight and low polydispersity is investigated with regard to their technological and biomedical applications; in particular, their applications as vehicles for drug delivery systems are considered. The solution behavior of amphiphilic BCPs and double-hydrophilic block copolymers (DHBCs), with one or both blocks being responsive to any stimulus, is discussed. Polyion complex micelles (PICMs)/polymersomes obtained from the electrostatic interaction of a polyelectrolyte-neutral BCP with oppositely charged species are also detailed. Lastly, polymerization-induced self-assembly (PISA), which forms nanoscale micellar aggregates with controlled size/shape/surface functionality, and the crystallization-driven self-assembly of semicrystalline BCPs facilitated when one block of the BCP is crystallizable, are also revealed. The scalability of the copolymeric micelles in the drug delivery systems and pharmaceutical formations that are currently being used in clinical trials, research, or preclinical testing is emphasized as these micelles could be used in the future to create novel nanomedicines. The updated literature and the future perspectives of BCP self-assembly are considered. Micelle ; Amphiphile ; Copolymer ; Polymersome ; Drug delivery ; Materials science ; Nanotechnology ; Dispersity ; Self-assembly ; Polymer ; Polymerization ; Template ; Nanoscopic scale ; Chemical engineering ; Aqueous solution ; Polymer chemistry ; Chemistry ; Organic chemistry Advanced Polymer Synthesis and Characterization ; Nanoparticle-Based Drug Delivery ; Dendrimers and Hyperbranched Polymers
Authors: Frédéric Dumur
Source: European Polymer Journal (article, 2023-03-29)
Field: Chemistry — Organic Chemistry

Recent advances on Anthraquinone-based photoinitiators of polymerization Photopolymer ; Anthraquinone ; Panchromatic film ; Polymerization ; Photoinitiator ; Materials science ; Nanotechnology ; Photochemistry ; Chemistry ; Polymer ; Monomer ; Optics ; Organic chemistry ; Physics ; Composite material Photopolymerization techniques and applications ; Advanced Polymer Synthesis and Characterization ; Dental materials and restorations
Authors: Siyu Zheng | Xinyi Mei | Jingxuan Chen | Erik M. J. Johansson | Xiaoliang Zhang
Source: Nano Research Energy (article, 2023-09-08)
Field: Materials Science — Materials Chemistry

Colloidal quantum dot for infrared-absorbing solar cells: State-of-the-art and prospects Colloidal quantum dot (CQD) shows great potential for application in infrared solar cells due to the simple synthesis techniques, tunable infrared absorption spectrum, and high stability and solution-processability. Thanks to significant efforts made on the surface chemistry of CQDs, device structure optimization, and device physics of CQD solar cells (CQDSCs), remarkable breakthroughs are achieved to boost the infrared photovoltaic performance and stability of CQDSCs. In particular, the CQDSC with a high power conversion efficiency of ~ 14% and good stability is reported, which is very promising for infrared-absorbing solar cells. In this review, we highlight the unique optoelectronic properties of CQDs for the development of infrared-absorbing solar cells. Meanwhile, the latest advances in finely controlling surface properties of CQDs are comprehensively summarized and discussed. Moreover, the device operation of CQDSCs is discussed in-depth to highlight the impact of the device structure optimization of CQDSCs on their photovoltaic performance, and the emerging novel types of CQDSCs, such as semitransparent, flexible, and lightweight CQDSCs, are also demonstrated. The device stability of CQDSCs is also highlighted from the viewpoint of practical applications. Finally, the conclusions and possible challenges and opportunities are presented to promote the development steps of the CQDSCs with higher infrared photovoltaic performance and robust stability. Photovoltaic system ; Infrared ; Quantum dot ; Materials science ; Nanotechnology ; Optoelectronics ; Energy conversion efficiency ; Absorption (acoustics) ; Stability (learning theory) ; Computer science ; Optics ; Physics ; Engineering ; Electrical engineering ; Composite material Quantum Dots Synthesis And Properties ; Chalcogenide Semiconductor Thin Films ; Perovskite Materials and Applications
Authors: Marko Vinceković | Slaven Jurić | Kristina Vlahoviček‐Kahlina | Katarina Martinko | Suzana Šegota | Marijan Marijan | Ana Krčelić | Lidija Svečnjak | Mislav Majdak | Ivan Nemet | Sanda Rončević | Iva Rezić
Source: Polymers (article, 2023-11-08)
Field: Materials Science — Biomaterials

Novel Zinc/Silver Ions-Loaded Alginate/Chitosan Microparticles Antifungal Activity against Botrytis cinerea Addressing the growing need for environmentally friendly fungicides in agriculture, this study explored the potential of biopolymer microparticles loaded with metal ions as a novel approach to combat fungal pathogens. Novel alginate microspheres and chitosan/alginate microcapsules loaded with zinc or with zinc and silver ions were prepared and characterized (microparticle size, morphology, topography, encapsulation efficiency, loading capacity, and swelling behavior). Investigation of molecular interactions in microparticles using FTIR-ATR spectroscopy exhibited complex interactions between all constituents. Fitting to the simple Korsmeyer-Peppas empirical model revealed the rate-controlling mechanism of metal ions release from microparticles is Fickian diffusion. Lower values of the release constant <i>k</i> imply a slower release rate of Zn<sup>2+</sup> or Ag<sup>+</sup> ions from microcapsules compared to that of microspheres. The antimicrobial potential of the new formulations against the fungus <i>Botrytis cinerea</i> was evaluated. When subjected to tests against the fungus, microspheres exhibited superior antifungal activity especially those loaded with both zinc and silver ions, reducing fungal growth up to 98.9% and altering the hyphal structures. Due to the slower release of metal ions, the microcapsule formulations seem suitable for plant protection throughout the growing season. The results showed the potential of these novel microparticles as powerful fungicides in agriculture. Botrytis cinerea ; Metal ions in aqueous solution ; Chitosan ; Biopolymer ; Zinc ; Fourier transform infrared spectroscopy ; Microparticle ; Fungicide ; Nuclear chemistry ; Swelling ; Chemistry ; Controlled release ; Materials science ; Metal ; Chemical engineering ; Nanotechnology ; Organic chemistry ; Polymer ; Botany ; Composite material Nanocomposite Films for Food Packaging ; Nanoparticles: synthesis and applications ; Polymer-Based Agricultural Enhancements
Authors: Shuang Yu | Yueying Huang | Biao Shen | Wang Zhang | Yan Xie | Qi Gao | Dan Zhao | Zufang Wu | Yanan Liu
Source: Comprehensive Reviews in Food Science and Food Safety (review, 2023-05-17)
Field: Materials Science — Biomaterials

Peptide hydrogels: Synthesis, properties, and applications in food science Due to the unique and excellent biological, physical, and chemical properties of peptide hydrogels, their application in the biomedical field is extremely wide. The applications of peptide hydrogels are closely related to their unique responsiveness and excellent properties. However, its defects in mechanical properties, stability, and toxicity limit its application in the food field. In this review, we focus on the fabrication methods of peptide hydrogels through the physical, chemical, and biological stimulations. In addition, the functional design of peptide hydrogels by the incorporation with materials is discussed. Meanwhile, the excellent properties of peptide hydrogels such as the stimulus responsiveness, biocompatibility, antimicrobial properties, rheology, and stability are reviewed. Finally, the application of peptide hydrogel in the food field is summarized and prospected. Self-healing hydrogels ; Peptide ; Biocompatibility ; Rheology ; Materials science ; Nanotechnology ; Chemistry ; Biochemistry ; Polymer chemistry ; Composite material Supramolecular Self-Assembly in Materials ; Chemical Synthesis and Analysis ; Glycosylation and Glycoproteins Research
Authors: Florian Martin Zielke | Floris P. J. T. Rutjes
Source: Topics in Current Chemistry (review, 2023-11-22)
Field: Chemistry — Organic Chemistry

Recent Advances in Bioorthogonal Ligation and Bioconjugation The desire to create biomolecules modified with functionalities that go beyond nature's toolbox has resulted in the development of biocompatible and selective methodologies and reagents, each with different scope and limitations. In this overview, we highlight recent advances in the field of bioconjugation from 2016 to 2023. First, (metal-mediated) protein functionalization by exploiting the specific reactivity of amino acids will be discussed, followed by novel bioorthogonal reagents for bioconjugation of modified biomolecules. Bioconjugation ; Bioorthogonal chemistry ; Chemistry ; Biomolecule ; Combinatorial chemistry ; Nanotechnology ; Toolbox ; Biocompatible material ; Posttranslational modification ; Click chemistry ; Biochemistry ; Computer science ; Enzyme Click Chemistry and Applications ; Peptidase Inhibition and Analysis ; Chemical Synthesis and Analysis