Article
Chemistry, Physical
Yuanyuan Li, Xiaoyu Liu, Tianyuan Liang, Wenjie Liu, Jiyang Fan
Summary: The study shows that SiC quantum dots with small dimensions can naturally oxidize at a lower temperature to form core/shell and heteroepitaxial SiC/SiO2 quantum dots. The surface silica layer enhances the quantum efficiency by improving the carrier potential barrier and reducing the nonradiative transition rate, making it suitable for nanoscale electronic and photonic devices.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Analytical
Kang Liu, Rujia Liu, Dengchao Wang, Rongrong Pan, Hong-Yuan Chen, Dechen Jiang
Summary: This study utilizes a highly sensitive electrode to investigate reactive oxygen species (ROS) in a 3D cell model. By observing the distribution of ROS in the cell sphere, it is discovered that there is oxygen stress in the 3D cancer cell model, which differs from the metabolism in 2D cell models.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Anderson K. Okazaki, Rafael Furlan de Oliveira, Rafael Luiz Heleno Freire, Adalberto Fazzio, Felipe Crasto de Lima
Summary: Researchers have successfully grown two-dimensional arsenic allotropes on an insulating SiC substrate using molecular beam epitaxy. The arsenene has a flat structure and follows the periodicity of the SiC surface. Ab initio simulations based on density functional theory confirm the experimental observations. The strained structure exhibits a new triangular arsenene allotrope rather than the previously predicted honeycomb structure. This strained structure undergoes a Peierls-like transition, resulting in an indirect band gap semiconductor behavior.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Ceramics
Shuang Li, Yang Li, Chuncheng Wei, Peng Wang, Peiling Gao, Lijuan Zhou, Guangwu Wen
Summary: The fabrication route for silicon carbide membrane using boron carbide assistance in co-sintering process results in a reduction of sintering cycles and shorter preparation periods, as well as the formation of a straight and homogeneous selective layer on the substrate.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Konstantin Tamarov, Julie Tzu-Wen Wang, Juuso Kari, Emilia Happonen, Ilkka Vesavaara, Matti Niemela, Paavo Peramaki, Khuloud T. Al-Jamal, Wujun Xu, Vesa-Pekka Lehto
Summary: The biodistribution of PEGylated BPSi NPs with different sizes was investigated in mice, revealing that these nanoparticles mainly accumulated in the liver and spleen after intravenous injection. The smallest 140 nm particles showed the highest accumulation in tumors, producing sufficient heat for cancer PTT. Other techniques besides optical imaging should be considered to study the organ biodistribution of light-absorbing NPs.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Biochemistry & Molecular Biology
Timothy Q. Vu, Lucas E. Sant'Anna, Neha P. Kamat
Summary: The addition of cell-targeting moieties and polyethylene glycol (PEG) to nanoparticle (NP) drug delivery systems improves the biodistribution, specificity, and uptake of therapeutic cargo. Lipid phase separation in nanoparticles can modulate liposome avidity by changing the proximity of PEG and targeting protein molecules, enhancing the binding of liposomes to cancer cells.
Article
Materials Science, Ceramics
Pavel V. Krasovskii, Alexey M. Lebedev
Summary: The surface chemistry of a plasma SiC nanopowder was characterized using X-ray photoelectron spectroscopy. The results showed surface enrichment of silica and sp2-bonded elemental carbon, with varying oxidation depths.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Szabolcs Czene, Nikoletta Jegenyes, Olga Krafcsik, Sandor Lenk, Zsolt Czigany, Gabor Bortel, Katalin Kamaras, Janos Rohonczy, David Beke, Adam Gali
Summary: Silicon carbide nanoparticles (SiC NPs) are potential inorganic molecular-sized fluorescent biomarkers, and researchers have developed a method to directly introduce amino groups into aqueous SiC NPs. The applicability of amino-terminated SiC NPs is demonstrated by attaching bovine serum albumin, and it is found that the fluorescence intensity is highly sensitive to surface termination, which may have implications for nanometer-sized SiC NPs with optically read electron spins.
Review
Materials Science, Ceramics
Yiyuan Wang, Shun Dong, Xiutao Li, Changqing Hong, Xinghong Zhang
Summary: This article provides a comprehensive overview on the synthesis, properties and potential applications of silicon carbide (SiC) nanoparticles. It discusses various synthesis techniques, highlights the unique properties of SiC nanoparticles, and discusses their diversified applications. The article is informative and valuable for research in the field.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Jingcun Liu, Ruizhe Zhang, Ming Xiao, Subhash Pidaparthi, Hao Cui, Andrew Edwards, Cliff Drowley, Yuhao Zhang
Summary: This article demonstrates for the first time that avalanche current in GaN JFETs can flow through the source by using a MOSFET driver with a large gate resistance or an RC-interface driver. Physics-based mixed-mode electrothermal simulations reveal the carrier dynamics under different avalanche paths. Additionally, it shows that the RC-interface driver outperforms the MOSFET driver for GaN JFETs.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Soohyun Lee, Sungwoo Lee, Jiwoong Son, Jae-Myoung Kim, Junghwa Lee, Sungjae Yoo, MohammadNavid Haddadnezhad, Jieun Shin, Jeongwon Kim, Jwa-Min Nam, Sungho Park
Summary: The synthetic strategies of web-above-a-ring (WAR) and web-above-a-lens (WAL) nanostructures are reported. WAR features a controllable gap and nanoweb with nanopores for enhancing Raman scattering, while WAL includes plasmonic hot zone, nanopores, and hot lens for generating stronger SERS signals.
Review
Chemistry, Multidisciplinary
Dong Yang, Bruce C. Gates
Summary: Metal-organic frameworks (MOFs) are a class of crystalline porous materials with potential applications in catalysis and separations due to their unique structure and active sites. The study of node ligands on MOFs plays a crucial role in understanding their catalytic activity, and their chemistry on MOF nodes is currently being explored to a greater extent.
ACCOUNTS OF CHEMICAL RESEARCH
(2021)
Review
Chemistry, Multidisciplinary
Shihua Li, Jing Wei, Qiaofeng Yao, Xiaorong Song, Jianping Xie, Huanghao Yang
Summary: Photoluminescence (PL) imaging is a critical tool for disease diagnosis, therapeutic evaluation, and surgical navigation. However, developing high-efficiency nanoprobes for in vivo imaging and clinical translation remains a challenge. This review discusses the progress in engineering sub-10 nm ultrasmall luminescent nanoprobes for in vivo PL bioimaging and highlights their unique advantages. The challenges in this field and strategies for improving in vivo PL bioimaging and clinical applications are also addressed.
CHEMICAL SOCIETY REVIEWS
(2023)
Article
Biochemistry & Molecular Biology
Yue Gao, Waicong Dai, Zhijun Ouyang, Mingwu Shen, Xiangyang Shi
Summary: This study investigated the intracellular delivery of fibronectin (FN) using phenylboronic acid (PBA)-functionalized generation 5 (G5) poly(amidoamine) dendrimers (G5.NH2-PBA) as nanocarriers. It was found that this method effectively guided macrophages towards anti-inflammatory M2 polarization. Mechanistic studies revealed that the dendrimer-mediated FN delivery suppressed the nuclear factor-κB pathway, resulting in reduced pro-inflammatory cytokine secretion and enhanced reactive oxygen species depletion. Furthermore, in vivo experiments demonstrated the potential of dendrimer-mediated FN delivery in alleviating lung inflammation and oxidative stress in acute lung injury.
Article
Chemistry, Multidisciplinary
James Magnus Rae, Barbara Jachimska
Summary: This study revealed that the interaction between BSA and G5.5 PAMAM dendrimers is driven by both electrostatic and hydrophobic forces. The binding alters the structure, charge distribution, and secondary structure of proteins.
Article
Food Science & Technology
Tatiana Borisova, Natalia Pozdnyakova, Natalia Krisanova, Artem Pastukhov, Marina Dudarenko, Konstantin Paliienko, Valeria Grytsaenko, Francois Lux, Vladimir Lysenko, Paul Rocchi, Serhiy Komisarenko, Olivier Tillement
Summary: The study revealed that AGuIX nanoparticles do not affect neurotransmission at presynaptic sites at medical treatment concentrations, while high concentrations of DOTAGA and DOTAGA/Gd3+ significantly impact synaptic neurotransmission. The unique structure of AGuIX allows it to overcome the neurotoxic features of its constituents.
FOOD AND CHEMICAL TOXICOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Vladyslav V. Lisnyak, Alexander N. Zaderko, Ruslan Mariychuk, Volodymyr Lysenko, Olga Yu. Boldyrieva, Valeriy A. Skryshevsky, Gauhar Mussabek, Yerzhan Taurbayev, Nazym Zhylkybayeva, Oksana Yu. Tananiko
Summary: A novel sensing system for pH measurements was developed based on the enhanced and quenched photoluminescence and UV-Vis absorption of F-, O-, and N-containing carbon nanoparticles. The study characterized the structure and properties of these nanoparticles, and identified the pH response mechanism to be related to deprotonation of functional groups.
APPLIED NANOSCIENCE
(2022)
Article
Nanoscience & Nanotechnology
V. M. Pyeshkova, O. Y. Dudchenko, O. O. Soldatkin, S. A. Alekseev, T. Seker, B. Akata Kurc, S. V. Dzyadevych
Summary: A new three-enzyme lactose amperometric biosensor was developed based on a platinum disc electrode modified by a nanosized semipermeable poly (meta-phenylenediamine) film. The optimized electropolymerization conditions of meta-phenylenediamine resulted in a high sensitivity and selectivity of the biosensor for lactose measurement. The biosensor showed high reproducibility, sensitivity, and selectivity, making it suitable for rapid and accurate determination of lactose in milk samples.
APPLIED NANOSCIENCE
(2022)
Article
Chemistry, Analytical
Alain Geloen, Karyna Isaieva, Mykola Isaiev, Olga Levinson, Emmanuelle Berger, Vladimir Lysenko
Summary: The study demonstrates that the detection and localization of unlabeled nanoparticles inside cells is possible through measuring the refractive index, which will enhance the dose-response paradigm in the field of nanomaterials toxicology.
Article
Chemistry, Multidisciplinary
Bayan A. Kurbanova, Gauhar K. Mussabek, Viktor Y. Timoshenko, Vladimir Lysenko, Zhandos N. Utegulov
Summary: The study investigates the photothermal and heat conductive properties of nanogranular silicon films synthesized by evaporating colloidal droplets of crystalline silicon nanoparticles. Simulations and experiments show that the phase transition in these films is influenced by factors such as film thickness and substrate material, and the films have low thermal conductivity due to their voided topology and weak interface bonding.
Article
Chemistry, Multidisciplinary
Ivan I. Ivanov, Alexander N. Zaderko, Vladimir Lysenko, Thierry Clopeau, Vladyslav V. Lisnyak, Valeriy A. Skryshevsky
Summary: A simple and sensitive method for nonspecific recognition of alcoholic beverages using the photoluminescence of carbon nanoparticles was developed. The method involves synthesizing carbon NPs and analyzing the PL features to visualize different clusters corresponding to each type of beverage. Optimal measurement conditions were defined to ensure reliable recognition.
Article
Optics
I. Gavrilchenko, Y. S. Milovanov, S. Gryn, S. A. Alekseev, A. N. Zaderko, A. G. Shkavro, I. I. Ivanov, V. A. Skryshevsky
Summary: In this study, we reported on the structural and photoluminescence properties of porous silicon carbide formed by electro-chemical etching of SiC plate. The photoluminescence spectrum in the visible region was observed and could be fitted with at least three peaks, with the properties discussed in relation to SEM, TEM, and Raman studies. The nature of the peaks were explained by electron-hole recombination, surface defect centers, and SiC nanocrystallites.
JOURNAL OF LUMINESCENCE
(2021)
Article
Chemistry, Physical
Hafsa Karroum, Sergey Chenakin, Sergei Alekseev, Viacheslav Iablokov, Yizhi Xiang, Vincent Dubois, Norbert Kruse
Summary: This study presents a one-step-one-pot synthesis of chain-lengthened aliphatic amines and nitriles using potassium-promoted Co/MnOx catalysts, showing that the reaction can be tuned by adjusting the H-2/CO ratio. Additionally, the addition of NH3 strongly favors the formation of chain-lengthened olefins over alkanes.
Article
Chemistry, Multidisciplinary
Alain Geloen, Gauhar Mussabek, Alexander Kharin, Tetiana Serdiuk, Sergei A. Alekseev, Vladimir Lysenko
Summary: The cytotoxicity of fluorescent carbon fluoroxide (CFO) nanoparticles was studied on various cancer and non-cancer cell lines, showing a greater toxic effect on cancer cells. Biocompatibility of the nanoparticles is related to the maximum acceptable concentration for a given cell type. It is important to study the cytotoxic effects of nanoparticles not only during direct exposure to cells, but also after washout from the culture medium.
Review
Chemistry, Multidisciplinary
Mykola Isaiev, Gauhar Mussabek, Pavlo Lishchuk, Kateryna Dubyk, Nazym Zhylkybayeva, Gulmira Yar-Mukhamedova, David Lacroix, Vladimir Lysenko
Summary: Photoacoustic-based sensing approaches are essential for imaging and visualization in material research and biomedical applications. The compact size and on-site measurement capability of photoacoustic devices enable online monitoring of material parameters, which is significant for the development of various sensing applications.
Article
Chemistry, Multidisciplinary
Andriy O. Sobchuk, Maxim M. Lazarenko, Kateryna S. Yablochkova, Roman Dinzhos, Nataliia M. Fialko, Mykhaylo Lazarenko, Dmitriy A. Andrusenko, Svitlana Gryn, Andriy Brytan, Alexander M. Alekseev
Summary: This paper discusses the temperature dependencies of complex dielectric permittivity obtained at different frequencies for substituted cellulose derivatives with various concentrations of the hydroxypropoxy group. It is found that substituted cellulose derivatives undergo a low-temperature dielectric relaxation. The contribution of dielectric relaxation to dielectric permittivity decreases when OH groups in cellulose molecules are substituted by methoxy groups, but increases when OH groups are substituted by hydroxypropoxy groups. Dielectric spectroscopy is shown to be a reliable method to estimate the degree of substitution of hydroxyl groups with hydroxypropoxy groups in cellulose derivatives used in the pharmaceutical industry.
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Sergey P. Chenakin, Sergei A. Alekseev, Norbert Kruse
Summary: XPS and DRIFTS were utilized to investigate the isothermal decomposition of MnC2O4, revealing two pathways for decomposition leading to the formation of MnO and MnCO3. Graphitic carbon formation was observed in the reaction products, associated with interface chemical reactivities between MnO particles and the supporting gold foil.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Kateryna I. I. Hnatiuk, Yuri F. F. Zabashta, Maxim M. M. Lazarenko, Sergei A. A. Alekseev, Kateryna S. S. Yablochkova, Michael V. V. Ushcats, Roman V. V. Dinzhos, Liena Yu. Vergun, Dmytro A. A. Andrusenko, Aleksander N. N. Alekseev, Leonid A. A. Bulavin
Summary: This study investigates the scale effect of dielectric relaxation in nanocrystals, specifically how the relaxation parameters depend on the size of the nanocrystal. A model is proposed to explain the scale effect caused by thermally activated motion, considering each nanocrystal as a physical infinitesimal volume where local equilibrium exists. It is concluded that energy fluctuations in the nanocrystal as a whole are caused by thermally activated motion, and the intensity of these fluctuations decreases with decreasing nanocrystal sizes. Experimental data using complex dielectric permittivity of composites support the predictions of the model.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Anastasiia Kornii, Anna Borets, Vladyslav V. Lisnyak, Sergei Alekseev, Oksana Tananaiko
Summary: The study utilized nanostructured screen-printed carbon electrodes modified with silica-based composite films containing metal oxides and graphene oxide for the detection of H2O2. The modified electrodes showed improved electrocatalytic performance and wide linear detection ranges for H2O2.
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Sergey P. Chenakin, Sergei A. Alekseev, Norbert Kruse
Summary: XPS and DRIFTS were used to study the isothermal decomposition of MnC2O4 under different environmental conditions, revealing its decomposition kinetics and the composition of the final products. This helps to better understand the thermal decomposition mechanism of this compound.
INORGANIC CHEMISTRY
(2022)
