Article
Materials Science, Multidisciplinary
Liangbo Sun, Jian Fang, Chunfeng Liu, Songsong Guo, Jie Zhang
Summary: A novel glass-ceramic of Li2O-MgO-Al2O3-SiO2 was developed to join porous Si3N4 ceramic, demonstrating the feasibility of using glass-ceramic interlayers for joining porous non-oxide ceramics. The joint showed reliable performance at both room temperature and high temperature, forming a net-like glass-ceramic interlayer and infiltration layer.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
Weiwei Han, Yigang Lv, Shiyu Wang, Jie Qiao, Chaosheng Zou, Miao Su, Hui Peng
Summary: The pH values of pore solutions in geopolymers were determined using different Al/Na and Si/Na molar ratios. It was found that the pH values decreased with an increase in the Al/Na ratio and increased with an increase in the Si/Na ratio. The compressive strength of the geopolymers showed a similar trend, while the exothermic rates indicated that the reaction levels first increased and then decreased with an increase in the Al/Na ratio, and gradually slowed down with an increase in the Si/Na ratio. SEM, MIP, XRD, and other test methods also confirmed the correlation between the pH values of the pore solutions and the reaction levels.
Article
Materials Science, Ceramics
Liangbo Sun, Shuohao Wang, Chuanmei Hou, Dongbao Wang, Chunfeng Liu, Xinghong Zhang, Jie Zhang
Summary: In this study, SiC ceramics were joined using a Y2O3-Al2O3-SiO2 glass bonding method, and the resulting mechanical properties and interface bonding mechanism were investigated. The joining parameter of interest was temperature from 1400 degrees C to 1500 degrees C for a dwell time of 10 min. Characterization using electron microscopy and X-ray diffractometry revealed the formation of a multiphase glass-ceramic interlayer consisting mainly of Y2Si2O7 and mullite in the joint. The joint obtained from the pre-oxidized SiC substrate exhibited a more reliable interface bonding than the unoxidized surface, achieving a preferable shear strength of 48 MPa at 1420 degrees C within 10 min. Elemental diffusion at the interface and chemical bonding between the glass-ceramic and SiC contributed to the reliable SiC-SiC joint.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
A. Zocca, B. R. Mueller, R. Laquai, A. Kupsch, F. Wieder, S. Benemann, J. Wilbig, J. Guenster, G. Bruno
Summary: The microstructure of an apatite-wollastonite glass-ceramic was analyzed using 2D microscopy, phase analysis, X-ray absorption, and synchrotron X-ray refraction computed tomography (XCT and SXRCT). The combination of these techniques allowed for comprehensive characterization of the microstructure at different scales. The material exhibited a complex microstructure with a glassy matrix and embedded fluorapatite and wollastonite crystals, forming spiked structures resembling sea urchins. SXRCT revealed the 3D distribution of these structures with excellent contrast, and SEM-EDX analysis identified them as composed of sub-micrometric fluorapatite and diopside crystals.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Liangbo Sun, Jian Fang, Songsong Guo, Tipeng Shan, Yue Wen, Chunfeng Liu, Jie Zhang
Summary: The influence of MgO/Al2O3 composition ratio on microstructure and crystallization behavior of Li2O-MgO-Al2O3-SiO2 glass-ceramic for joining Si3N4 ceramics was investigated. The study found that the glass-ceramic had excellent crystallization ability and could achieve good bonding with Si3N4 ceramics.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Preeti Kumari, R. K. Gangwar, P. M. Sarun, Devendra Kumar
Summary: The study added barium titanate to MAST glass ceramic to increase the dielectric constant, resulting in improved microwave dielectric properties. The sintered samples showed the formation of cordierite, BaTi5O11 and Ba2Ti9O20 compounds, which play a key role in enhancing the dielectric constant.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Chaosheng Yuan, Jian Wang, Xin Zhang, Yongfu Liang, Xuerui Cheng, Xiang Zhu
Summary: In this study, the pressure-induced phase transitions of ChCl/Ma DESs with different molar ratios were investigated using in situ Raman spectroscopy. The results showed that DESs exhibited high structural stability under high pressure near the eutectic point. The findings provide valuable insights for the design of new green solvents.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Ceramics
Huaiqian Li, Hao Yang, Jian Shi, Yingchun Ma, Jingchang Cheng, Peng Gao, Zhiquan Miao, Bo Yu, Yanpeng Wei
Summary: Gd2WO6 precursor powder was prepared from Gd2O3 and WO3 via a high-temperature solid-state reaction. Gd2WO6 ceramics with relative densities more than 95% were prepared by secondary sintering method. The effects of temperature on Gd2WO6 phase composition, microstructure, and properties of the ceramic materials were studied.
CERAMICS INTERNATIONAL
(2023)
Article
Construction & Building Technology
Ayoub Dehghani, Farhad Aslani, Neda Ghaebi Panah
Summary: This paper discusses the impact of SiO2/Al2O3 ratio and replacement materials on the properties of fly ash-based geopolymers. Results show that increasing the SiO2/Al2O3 ratio accelerates the setting of geopolymer systems but may lead to a peak and subsequent decrease in compressive strength. Furthermore, reducing the amount of replacement materials prolongs setting time and significantly reduces compressive strength.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Ceramics
Jian Fang, Liangbo Sun, Songsong Guo, Chunfeng Liu, Jie Zhang
Summary: The addition of Li2O reduced the crystallization activation energy of glass, promoted the precipitation of spodumene and wollastonite, and suppressed the precipitation of anorthite. By controlling the Li2O content and crystallization treatment, the coefficient of thermal expansion of glass-ceramic could be adjusted within a certain range. The glass-ceramic with 3 wt.% of Li2O showed a CTE that was well-matched with SiC ceramic, and exhibited excellent wettability and weldability.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Muhammad Salman, Hyeon-Mo Bae, Dang-Hyok Yoon
Summary: Magnesium- and calcium-aluminosilicate (MAS and CAS) glass-ceramics were investigated for joining alumina and resulted in stable joints with the formation of MgAl2O4 and CaO•6Al2O3 phases upon heat treatment of the fillers.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Liangbo Sun, Jian Fang, Songsong Guo, Yue Wen, Chunfeng Liu, Jie Zhang
Summary: In this work, a new beta-LiAlSi2O6/Mg2SiO4 glass-ceramic interlayer was developed to join dense and porous Si3N4 ceramics, forming a gradient infiltration layer to enhance mechanical strength and high-temperature resistance of the joint.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
O. R. K. Montedo, R. B. Nuernberg, R. H. Piva, J. Jiusti, S. Arcaro, D. H. Piva
Summary: This study evaluated the electrical behavior of a glass ceramic LZSA composition monolith as a function of the thickness of crystalline layer formed on the monolith surface. The results showed that the resistivity increased with higher thermal treatment temperature, leading to a decrease in electrical conductivity. Monoliths thermally treated at 850 degrees C showed potential for dielectric industrial applications based on their electrical behavior.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Tipeng Shan, Liangbo Sun, Chunfeng Liu, Jian Fang, Zengwei Li, Yue Wen, Boyin Wang, Songsong Guo, Jie Zhang
Summary: A specialized CAS glass-ceramic was developed to join SiC ceramics, and postjoining crystallization heat-treatment significantly improved the shear strength of the joint.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Jian Fang, Liangbo Sun, Songsong Guo, Tipeng Shan, Yue Wen, Chunfeng Liu, Jie Zhang
Summary: A novel two-step method was developed to join SiC ceramics using CLAS glass as the joining material, significantly improving wettability and interfacial bonding strength. By pre-oxidizing the SiC surface, the formation of a SiO2 layer enhanced the wetting behavior of the glass solder, resulting in a nanoscale eutectic structure in the joint seam and an optimal shear strength of 127 MPa achieved at 1240 degrees C, 119% higher than the one-step joining method.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Piotr Golonko, Karolina Sadowska, Tomasz Ragin, Marcin Kochanowicz, Piotr Miluski, Jan Dorosz, Marta Kuwik, Wojciech Pisarski, Joanna Pisarska, Magdalena Lesniak, Dominik Dorosz, Jacek Zmojda
Summary: The paper aims to develop a glass-ceramic material with a balance of crystallization, thermal stability, and optical properties. The experiment demonstrates that the fabricated material exhibits glass-ceramic characteristics with high transparency and thermal stability.
Article
Biochemistry & Molecular Biology
Dominika Pawcenis, Ewelina Twardowska, Magdalena Lesniak, Roman J. Jedrzejczyk, Maciej Sitarz, Joanna Profic-Paczkowska
Summary: PtNPs were successfully synthesized using a modified polyol process with TOCN as a stabilizing and co-reducing agent. The optimal stabilizing effect of PtNPs was determined by studying different ratios of TOCN nanocellulose to Pt4+ ions. The influence of pH of aqueous TOCN suspensions on the morphology of PtNPs was also investigated. It was demonstrated that PtNPs could be obtained solely in the presence of TOCN without the need for an additional reducing agent or ethylene glycol. The morphology and structural properties of the nanocellulose-platinum nanoparticles composites were characterized using spectroscopic, microscopic, and diffraction techniques. The catalytic performance of PtNPs in 4-nitrophenol reduction and the antibacterial efficacy against E. coli were evaluated.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Physical
Magdalena Lesniak, Gabriela Mach, Bartlomiej Starzyk, Karolina Sadowska, Tomasz Ragin, Jacek Zmojda, Marcin Kochanowicz, Marta Kuwik, Piotr Miluski, Gloria Lesly Jimenez, Agata Baranowska, Jan Dorosz, Wojciech Pisarski, Joanna Pisarska, Zbigniew Olejniczak, Dominik Dorosz
Summary: The effect of BaF2, MgF2, and AlF3 on the structural and luminescent properties of gallo-germanate glass (BGG) doped with erbium ions was investigated. The results show that fluoride modifiers can adjust the local environment of erbium ions and enhance the luminescence intensity, providing a basis for designing glasses with special luminescent properties.
Article
Biochemistry & Molecular Biology
D. Pawcenis, M. Lesniak, M. Szumera, M. Sitarz, J. Profic-Paczkowska
Summary: Nanocelluloses have attracted much attention due to their mechanical properties, high surface area, and porosity. Sulfuric acid is commonly used for the production of cellulose nanocrystals, but it leads to cellulose esterification and lower thermal stability. Hydrochloric acid hydrolysis does not result in functionalization of the nanocellulose surface, but it lacks ionic interactions and causes poor colloidal stability. This study aimed to obtain stable aqueous suspensions of cellulose nanofibrils (CNF) through hydrochloric acid hydrolysis. The best stabilizing effect was achieved at pH 5-9 and with nonionic surfactants.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Materials Science, Multidisciplinary
Karolina Kowalska, Marta Kuwik, Joanna Pisarska, Magdalena Lesniak, Dominik Dorosz, Marcin Kochanowicz, Jacek Zmojda, Jan Dorosz, Wojciech A. Pisarski
Summary: The luminescence properties of erbium-doped barium gallo-germanate glasses modified by titanium dioxide for near-infrared luminescence applications were investigated. The 1.5 mm luminescence associated with the 4I13/2 / 4I15/2 transition of Er3+ ions was examined as a function of TiO2 concentration. Spectroscopic and near-infrared laser parameters were determined, including stimulated emission cross-section, luminescence bandwidth, lifetime, quantum efficiency, gain bandwidth, and figure of merit. The results indicate that Er-doped glasses with a molar ratio of GeO2:TiO2 of 1:2 exhibit excellent luminescence properties and can be applied to near-infrared broadband optical amplifiers successfully.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Biochemistry & Molecular Biology
Katarzyna Pach-Zawada, Magdalena Lesniak, Katarzyna Filipecka-Szymczyk, Edmund Golis, Maciej Sitarz, Dominik Dorosz, Jacek Filipecki
Summary: In this article, the influence of erbium ions on the structure and magneto-optical properties of tellurite glass systems were studied. The structural changes were investigated using positron annihilation lifetime spectroscopy (PALS) and Raman spectroscopy, while the amorphous structure was confirmed using X-ray diffraction (XRD) method. The magneto-optical properties of the glasses were determined through Faraday effect measurements and calculations of Verdet constant.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Karolina Sadowska, Tomasz Ragin, Marcin Kochanowicz, Piotr Miluski, Jan Dorosz, Magdalena Lesniak, Dominik Dorosz, Marta Kuwik, Joanna Pisarska, Wojciech Pisarski, Katarzyna Recko, Jacek Zmojda
Summary: This paper investigates the structural and luminescence properties of co-doped LaPO4 nanophosphors. It is found that LaPO4:Eu3+/Nd3+ and LaPO4:Eu3+/Nd3+/Yb3+ nanophosphors exhibit strong luminescence in the range of 650-1100 nm, indicating energy transfer between rare-earth ions.
Article
Engineering, Electrical & Electronic
Lesly Jimenez, Radoslaw Lisiecki, B. Starzyk, C. Vazquez-Lopez, Magdalena Lesniak, Magdalena Szumera, Patryk Szymczak, Marcin Kochanowicz, Dominik Dorosz
Summary: The optical temperature sensing properties of fluoroindate glass co-doped with different trivalent lanthanide ions were evaluated using the FIR technique. The results showed that the highest relative sensitivity was achieved in the IFG:Tm3+/Yb3+ sample at 355 K, while the maximum absolute sensitivity was found in the IFG:Ho3+/Yb3+ system at 583 K. The CIE diagram also indicated a significant color change with increasing temperature in the IFG:Er3+/Yb3+ sample. Overall, the IFG:RE3+/Yb3+ glass systems are considered excellent candidates for temperature sensing.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Crystallography
Janusz Partyka, Katarzyna Pasiut, Dawid Kozien
Summary: The experiment aimed to determine the effect of strontium oxide on the recrystallization of zirconium silicate in glaze composition. The addition of strontium oxide affected the firing temperatures and microstructure of the glazes, resulting in an increase in the homogeneity of zirconium silicate distribution.
Proceedings Paper
Engineering, Electrical & Electronic
B. Starzyk, M. Lesniak, G. Lesly Jimenez, M. Kochanowicz, M. Kuwik, J. Zmojda, P. Miluski, A. Baranowska, J. Dorosz, W. A. Pisarski, J. Pisarska, P. Jelen, D. Dorosz
Summary: This study reports the preparation, structure analysis, and luminescent properties of fluoroindate glass and glass-ceramic materials. The results show that these materials have low phonon energy and good luminescent properties, making them potential hosts for near-infrared emission and light sources.
FIBER LASERS AND GLASS PHOTONICS: MATERIALS THROUGH APPLICATIONS III
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Bartlomiej Starzyk, Gloria Lesly Jimenez, Magdalena Lesniak, Marcin Kochanowicz, Marta Kuwik, Jacek M. Zmojda, Piotr Miluski, Agata Baranowska, Binita Shrestha, Jan Dorosz, Joanna Pisarska, Wojciech A. Pisarski, Dominik Dorosz
Summary: In this study, fluoroindate glasses co-doped with Er3+ and Yb3+ ions were synthesized, and the increase in luminescence intensity was observed with increasing dopant concentrations. This enhancement is significant for telecommunications applications and can be further improved by the efficient energy transfer from Yb3+ to Er3+ ions.
FIBER LASERS AND GLASS PHOTONICS: MATERIALS THROUGH APPLICATIONS III
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Dominik Dorosz, Marcin Kochanowicz, Magdalena Lesniak, Robert Mueller, Martin Lorenz, Jens Kobelke, Katrin Wondraczek, Rafael Valiente, Andrea Diego-Rucabado, Israel Cano, Fernando Aguado, Juergen Gluch, Isabel Kinski, Matthias Jaeger
Summary: Incorporating new optical materials as nanocrystals into glass fibres for new functionalities is a hot research topic. This study investigates the introduction of nanoscale laser crystallites into the core of optical fibres and analyzes the structural and spectroscopic characteristics of these nanocrystals. The optical and thermal parameters of the glasses are analyzed and the drawing conditions of the optical fibres are selected. However, further optimization of the fibre drawing process is needed to improve its distribution uniformity.
FIBER LASERS AND GLASS PHOTONICS: MATERIALS THROUGH APPLICATIONS III
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Marcin Kochanowicz, Karolina Sadowska, Krzysztof Markowski, Jacek Zmojda, Piotr Miluski, Agata Baranowska, Marta Kuwik, Magdalena Lesniak, Joanna Pisarska, Wojciech A. Pisarski, Dorosz Jan, Dominik Dorosz
Summary: The paper investigated 1.4 - 2.2 μm broadband emission under 796, 808, 980 nm laser diode excitation in low phonon energy germanate glass system co-doped with different impurities. A double-core, double-clad optical fiber was developed with excellent spectroscopic properties for constructing compact, broadband ASE sources.
FIBER LASERS AND GLASS PHOTONICS: MATERIALS THROUGH APPLICATIONS III
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Piotr Miluski, Marcin Kochanowicz, Jacek M. Zmojda, Agata Baranowska, Dominik Dorosz, Krzysztof Markowski, Jan Dorosz, Magdalena Lesniakb
Summary: The study investigated the propagation of linearly polarized modes in a new type of large mode area fiber, confirming the potential for propagation in this fiber structure.
FIBER LASERS AND GLASS PHOTONICS: MATERIALS THROUGH APPLICATIONS III
(2022)
Article
Chemistry, Multidisciplinary
G. Lesly Jimenez, Binita Shrestha, Tyron Porter, Bartlomiej Starzyk, Magdalena Lesniak, Marta Kuwik, Marcin Kochanowicz, Magdalena Szumera, R. Lisiecki, D. Dorosz
Summary: Up-conversion nanoparticles have attracted attention for their ability to convert low energy light into high-energy light, but their low efficiency poses limitations. By doping fluoroindate glasses with Yb3+ and Er3+, efficient energy transfer and improved biocompatibility can be achieved, making them suitable for biomedical applications.
Article
Spectroscopy
Zh. E. Ozbekova, A. A. Abdyldaev, A. A. Kulmyrzaev
Summary: This study compared two drying methods for cow and yak muscles, finding that freeze drying caused less discoloration. Additionally, analysis of fluorescence spectra allowed for accurate prediction of chemical composition and color characteristics of the muscles.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Leo Mandic, Ivan Ljubic, Iva Dzeba
Summary: In this study, a combined experimental and computational approach was used to investigate the photoexcitation and photodegradation mechanisms of Doxazosin (DOX). The results provide valuable insights into the primary events following the photoexcitation of DOX and its potential applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiufeng Wang, Yao Jin, Wenhui Ai, Siqi Wang, Zhiqing Zhang, Ting Zhou, Fang Wang, Guodong Zhang
Summary: This study successfully synthesized near infrared fluorescence Ag2S quantum dots (QDs) and developed a dual-mode sensor for sulfide anion using the excellent oxidase-like characteristics of manganese dioxide (MnO2) nanosheets. The sensor showed a wider detection range, higher sensitivity, and shorter reaction time, making it suitable for highly selective detection of sulfide in different concentration ranges.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yafei Li, Yanming Ma, Chuantao Zheng, Di Yu, Lien Hu, Shuo Yang, Fang Song, Yadan Li, Shuanghai Liu, Zhanrui Zhang, Yu Zhang, Yiding Wang, Frank K. Tittel
Summary: To effectively monitor gas explosion and coal spontaneous combustion in coal mine, an intrinsically safe and explosion-proof dual-gas sensor system was developed for methane (CH4) and carbon monoxide (CO) measurement. The system achieved different measurement ranges using laser scanning and gas cells, and improved stability and accuracy through gas pre-treatment and temperature compensation algorithm.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Pei-Rong Chen, Li-Kang Chu
Summary: In this study, the hydrates of glyoxal were investigated using infrared absorption spectrometry. The results showed that at low concentrations, glyoxal mainly exists as monomeric dihydrate. These findings provide suitable detection windows for further research on the roles of glyoxal and its hydrates in atmospheric and aerosol chemistry, as well as the relevant reaction kinetics.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Nichole O'Neill, Thamires A. Lima, Fabio Furlan Ferreira, Nicolas J. Alvarez, Reinhard Schweitzer-Stenner
Summary: This study determines the main fibril axis of GHG gel-forming fibrils using various techniques and compares the results with simulated data. The analysis suggests that the hydrophobic xz-surfaces of GHG fibrils could be a good target for the adsorption of hydrophobic drugs.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Mengyuan Liu, Hanchuang Zhu, Yikun Fang, Caiyun Liu, Xinke Li, Xiaohui Zhang, Lixue Ma, Kun Wang, Miaohui Yu, Wenlong Sheng, Baocun Zhu
Summary: ABHS is an efficient fluorescent probe that can accurately and sensitively detect Al3+ with strong resistance to interference. It also demonstrates excellent detection and imaging capabilities in complex real samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ahmed S. El-Shafie, Evana Rahman, Yasser Gadelhak, Rehab Mahmoud, Marwa El-Azary
Summary: The recycling of waste mandarin peels into biochar (MRBC) has been used as a high performance and cost-effective adsorbent for treating polluted wastewater effluents. Batch adsorption studies were conducted to analyze the adsorption competency of MRBC on two dyes, methylene blue (MB) and basic fuchsin (BF), either in individual solutions or binary combinations. The results showed that MRBC was capable of effectively removing a high percentage of both dyes. However, the adsorption capacity decreased when the dyes were combined. The cost estimation of MRBC production and wastewater treatment indicated that both were relatively low.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Anindita Bhatta, Jahnabi Upadhyaya, Dipak Chamlagai, Lincoln Dkhar, Pynskhemborlang T. Phanrang, Mohan Rao Kollipara, Sivaprasad Mitra
Summary: Derivatives of thiazole-pyrazole fused benzo-coumarin compounds were synthesized and their photophysical properties were investigated. The synthesized coumarin compounds showed potential as therapeutic agents for Alzheimer's disease, inhibiting acetylcholinesterase activity. The presence of human serum albumin was found to affect the inhibition activity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yongwei Duan, Quancheng Liu, Yiju Zhu, Qi Zhang, Xiaohui Duan, Hu Deng, Liping Shang
Summary: In this study, the phase transition of CL-20 was observed using terahertz spectroscopy, and quantum chemical calculations were employed to analyze the vibrations. The results indicated changes in the vibrations of CL-20 before and after phase transition.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yuefeng Gao, Sai Xu, Baojiu Chen
Summary: This study synthesized Cs2NaInCl6 nanocrystals co-doped with Sb3+ and Tb3+ ions as probes for copper ions detection in lubricating oil. The introduction of Sb3+ effectively reduced the band gap of the host material and enabled energy transfer pathway for Tb3+ emission. The doped Tb3+ ions resulted in the suppression of emission due to electron transfer. The Cs2NaInCl6: 2.5 %Sb3+, 40 %Tb3+ NCs exhibited superior sensitivity and selectivity for copper ions detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yu Liu, Yue Zhang, Changyao Liu, Ce Wang, Baocai Xu, Li Zhao
Summary: A highly sensitive detection platform for heparin was developed using a cationic fluorescent dye (cresyl violet acetate) as a fluorescence probe. The platform demonstrated high selectivity towards heparin and achieved detection in both HEPES solution and serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Lopamudra Roy, Nivedita Pan, Susmita Mondal, Ria Ghosh, Md. Nur Hasan, Neha Bhattacharyya, Soumendra Singh, Kallol Bhattacharyya, Arpita Chattopadhyay, Samir Kumar Pal
Summary: The study focuses on the interaction between reactive oxygen species (ROS) and a spectroscopic probe called Rose Bengal (RB), encapsulated in nanoscopic sodium dodecyl sulphate (SDS) micelles and entrapped in microscopic nylon 66 solid matrix. The research demonstrates efficient interaction between ROS and RB-SDS, and investigates the mechanism of hydroxyl radicals generation. Based on these findings, a prototype device utilizing RB embedded in a nylon thin film for quantification of ROS in extracellular fluids and food materials was developed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiaosong Sun, Qihao Cui, Wenyue Dong, Qian Duan, Teng Fei
Summary: Conjugated porous polymers (CPPs) are promising sensing materials and their application in aqueous media is limited. In this study, we synthesized CPPs with porous structure and prepared nanoparticles, enabling efficient photoluminescence sensing of nitroaromatic explosives in aqueous phase.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Maria Cristina Caggiani, Germana Barone, Paolo Mazzoleni
Summary: Raman spectroscopy is commonly used for studying glassy materials in cultural heritage, but it is more difficult to interpret the spectra and apply the technique with portable instruments. In contrast, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) can be used in archaeometric investigations as it is portable and non-invasive. However, there is limited application of this technique to historical glasses. This exploratory work demonstrates the potential of DRIFTS, in combination with portable X-ray Fluorescence (pXRF) and EDS microanalyses, for studying the composition and alteration of glass samples in cultural heritage.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
