Article
Chemistry, Multidisciplinary
Su-Rung Yang, Ying-Yu Yeh, Yi-Cheun Yeh
Summary: The study explores the use of ultrasound-initiated thiol-norbornene reaction for fabricating hydrogels and investigates how ultrasound conditions determine the properties of the hydrogels.
CHEMICAL COMMUNICATIONS
(2022)
Article
Polymer Science
Bagdagul Serikbayeva, Malik Satayev, Shaizada Koshkarbayeva, Abdugani Azimov, Kalamkas Amanbayeva, Guzaliya Sagitova, Aliya Suigenbayeva, Myrzabai Narmanov, Artem Kolesnikov
Summary: The study focused on the development of a technology for applying metal coatings to polypropylene products using electromagnetic waves of light radiation. Through the use of this technology, a thin film with the desired electrical conductivity was successfully created on the polymer surface, allowing for galvanic metallization.
Article
Green & Sustainable Science & Technology
Mingran Wang, Qianyu Wang, Yanping Cai, Rongfang Yuan, Fei Wang, Yiguang Qian, Zhongbing Chen, Beihai Zhou, Huilun Chen
Summary: The study demonstrated that under UV/PS system, PFBA can be effectively removed, and both acidic and alkaline conditions affect the degradation of PFBA, while higher persulfate doses or greater light intensity accelerate the degradation of PFBA effectively.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Yan-Ning Wang, Shao-Dan Wang, Si-Yuan Wang, Wen-Qian Dou, Peng-Hui Dong, Shu-Qin Lu, Fan Wang, Yue Sun, Qing-Feng Yang
Summary: In this study, a novel Ni-based coordination polymer with stable and bifunctional sensing capability was successfully synthesized. It exhibited excellent stability in water and had high sensitivity and selectivity for the detection of ascorbic acid and acetylacetone.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Applied
Danli Wang, Jingjing Wang, Jiachen Sun, Shaoping Qiu, Bingquan Chu, Ruosi Fang, Ling Li, Jinyan Gong, Fuping Zheng
Summary: This study investigated the stability of 5-CQA under ultrasonic treatment and found that ultrasound accelerated its degradation. The addition of epigallocatechin gallate and vitamin C improved the stability of 5-CQA.
Article
Chemistry, Analytical
Bo Song, Huinan Yan, Jiao Jiang, Jin Yu, Shengjun Huang, Jingli Yuan
Summary: In this study, an activatable nanoprobe for bimodal TGLI and MRI has been developed, which shows rapid, sensitive, and selective turn-on responses towards GSH and H2O2. The nanoprobe can be used for the identification and tracing of cancer cells in vitro and in vivo.
Article
Food Science & Technology
Shuang Li, Yan Zhou, Liming Sun, Yanjie Wang, Shuang Song, Chunqing Ai, Jingfeng Yang
Summary: The research aimed to find an effective storage method to maintain the quality of processed sea cucumbers. Various methods were tested, including freezing and oxygen treatment, and it was found that these methods had a minimal impact on the quality of the sea cucumbers, with the frozen and oxygen groups showing the best results after storage.
Article
Food Science & Technology
Sharmaine Atencio, Sarah H. E. Verkempinck, Kai Reineke, Marc Hendrickx, Ann Van Loey
Summary: This study evaluated the degradation kinetics of carotenoids in a pumpkin juice concentrate colored beverage during storage at different temperatures and light conditions. The results showed that both temperature and light intensity accelerated carotenoid losses, with degradation mainly caused by oxidative reactions. The degradation followed an Arrhenius temperature-dependency, and strategies such as minimizing oxygen exposure, using antioxidants, and selecting proper light sources can optimize pigment retention in carotenoid-colored beverages during storage.
Article
Biochemistry & Molecular Biology
Cristina Coman, Niculina Hadade, Szilard Pesek, Radu Silaghi-Dumitrescu, Augustin C. Mot
Summary: In this study, the isolated Sclerotinia sclerotiorum laccase was used to degrade sodium diclofenac, a commonly found nonsteroidal anti-inflammatory drug in water. The laccase degrades diclofenac by generating radicals and facilitating their rapid precipitation, resulting in more than 96% degradation. The degradation products were analyzed using various techniques to determine their structures and compositions.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2023)
Article
Chemistry, Physical
Mouna Hamlaoui, Abouelkacem Sahraoui, Houssem Boulebd, Abdennour Zertal
Summary: In this study, acetone photolysis was compared with the UV/H2O2 process for the removal of three commercial textile dyes in aqueous solution. The results showed that UV/acetone exhibited better removal efficiency than UV/H2O2, with higher decolorization rates for all dyes. Scavenging tests revealed that different radicals were responsible for the degradation of dyes in the two processes.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Food Science & Technology
K. C. Amaro, C. C. Tadini
Summary: The study demonstrated that microwave treatment was an effective method for PME inactivation in orange juice, while maximizing AA retention. The optimal isothermal conditions for orange juice were determined based on the kinetics parameters.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Polymer Science
Marco Borsari, Niccolo Braidi, Mirko Buffagni, Franco Ghelfi, Francesca Parenti, Nicola Porcelli, Gaia Serafini, Abdirisak Ahmed Isse, Luisa Bonifaci, Gianfranco Cavalca, Aldo Longo, Ida Morandini, Nicolo Pettenuzzo
Summary: ARGET ATRP of styrene was conducted using various carbonates as reducing agents, with or without ascorbic acid (AA), in a solvent mixture of EtOAc and EtOH. The system showed high yields and low dispersities with low amounts of catalyst and moderate reaction times, with the Cl-ATRP system providing excellent results. NMR spectroscopy and kinetic analyses confirmed the livingness of the final polymer chains.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Chemistry, Physical
Zhen Zhu, Ching-Lan Chung, Utkarsh Kumar, Ming-Hung Chung, Chiu-Hsien Wu, Ren-Jang Wu
Summary: A series of high-performance Pd/BiPO4 photocatalysts were synthesized using a facile hydrothermal technique and used to degrade gaseous formaldehyde under UV radiation. The experimental results showed that Pd/BiPO4 exhibited higher photocatalytic activities, with 1% Pd/BiPO4 showing the best degradation performance.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Spectroscopy
Gregor Hostnik, Jelena Tosovic, Sara Stumpf, Anja Petek, Urban Bren
Summary: The pH dependence of the UV/Vis spectrum of gallic and ellagic acid was measured in a buffer-free solution to obtain reliable data at wavelengths below 230 nm. Calculated spectra were compared to experimental spectra to explain absorption peaks in terms of main electronic transitions. Good agreement was observed between experimental and calculated spectra at low and near-neutral pH values. Incorporating calculated spectra of oxidized species of gallic acid and ellagic acid with one lactone ring open also achieved satisfactory agreement at high pH values.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Polymer Science
Majida Al-Wraikat, Yun Liu, Limei Wu, Zeshan Ali, Jianke Li
Summary: The conformation and chain structure of plant-derived polysaccharides are crucial for their various biological activities. Lycium barbarum L. leaves' polysaccharides are well known for their health benefits. However, their compact globular structure and high molecular weight greatly hinder their functional bioactivities. Degradation is commonly used to modify the conformation of polysaccharides and improve their functional bioactivities. In this study, the polysaccharides from Lycium barbarum L. leaves were degraded using vitamin C (Ascorbic acid) and hydrogen peroxide (H2O2). The degradation effect was characterized using various techniques. The results showed that degradation led to a significant decrease in molecular weight, indicating changes in the polysaccharides' molecular structure.
Article
Pharmacology & Pharmacy
Justyna Kobryn, Jowita Dalek, Witold Musial
Summary: This study focused on the solubility issue of cryptotanshinone (CT), a diterpenoid compound, and found that alkaline solvents with ethanol as a cosolvent can enhance CT's solubility. Moreover, alcoholamine additives can improve the stability of CT solutions compared to NaOH.
Article
Biochemistry & Molecular Biology
Adam Wlodarczyk, Mariusz Uchronski, Agata Podsiadly-Paszkowska, Joanna Irek, Bartlomiej M. Szyja
Summary: This paper presents the development of a method for refitting ReaxFF parameters for mixed transition metal oxides systems. The method is validated using hematite-supported (TiO2)(n) clusters, and the results show that it allows for the obtainment of stable cluster geometries.
JOURNAL OF MOLECULAR MODELING
(2022)
Article
Chemistry, Multidisciplinary
Maciej Chomiak, Bartlomiej M. Szyja, Marta Jedrysiak, Janusz Trawczynski
Summary: We present a comparative analysis of three Zn-based sorbents for sulphur removal from hot coal gas. The phase composition significantly influences the reducibility and H2S sorption of the sorbents. Zn2TiO4 has the highest reducibility and can adsorb the largest amount of hydrogen sulphide, while Zn2SiO4 and ZnAl2O4 are highly resistant to reduction by hydrogen and have lower hydrogen sulphide adsorption capacity. The adsorption capacity of ZnAl2O4 decreases in subsequent work cycles.
Article
Materials Science, Ceramics
Dorota Wojcik-Pastuszka, Justyna Krzak, Przemyslaw Przadka, Maria Twarda, Bogdan Osinski, Witold Musial
Summary: The aim of this study was to investigate the release of bupivacaine from proposed implants and test the storage stability. The implants were obtained using sol-gel method and the release of bupivacaine was analyzed using flow through cell connected to the UV-Vis spectrophotometer. The release profiles were analyzed using various kinetic models, and it was found that the zero-order or Higuchi equation best described the release profile of bupivacaine. The dissolution profiles of the drug were compared using statistical methods and it was revealed that there were differences between the release profiles.
CERAMICS INTERNATIONAL
(2023)
Article
Biochemistry & Molecular Biology
Beata Kizior, Mariusz Michalczyk, Jaroslaw J. Panek, Wiktor Zierkiewicz, Aneta Jezierska
Summary: The study focuses on understanding the nature of non-covalent interactions, particularly intramolecular hydrogen bonds, in proton sponges, specifically four naphthalene derivatives. Hirshfeld surfaces were used to analyze the crystal structures and quantum-chemical simulations were performed to explore the time-evolution changes of metric parameters and free energy profile. The results reveal the presence of other non-covalent interactions and frequent proton transfer phenomena, and confirm that the hydrogen bonds in proton sponges are Low-Barrier Hydrogen Bonds (LBHBs). Electronic and topological analysis provide insights into the temperature dependence and time-evolution changes of the electronic structure.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Mariusz Michalczyk, Beata Kizior, Wiktor Zierkiewicz, Steve Scheiner
Summary: The halogen bond formed by a series of Lewis acids TF3X with NH3 is studied by quantum chemical calculations. The depth of the sigma-hole on the X atom and the full electrostatic energy closely mimic the interaction energy. The electron-withdrawing ability of the T atom and the polarizability of the T atoms play opposing roles in determining the strength of the XBs. The contraction or elongation of the covalent TX bond is influenced by the charge transfer from the NH3 lone pair and the deepening of the sigma-hole, with different effects observed for X = Cl, Br, and I.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Iwona Golonka, Katarzyna E. E. Greber, Bartlomiej M. Szyja, Patrycja P. P. Petrus, Jakub E. E. Puculek, Witold Musial
Summary: The aim of the study was to evaluate the effect of different peptide structures on their physiochemical properties. The peptides showed high thermal stability and formed expanded liquid monolayers. Non-polar side chains played an important role in the properties of the peptides. The structure of the peptide affected its physicochemical and layer-forming properties.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Beata Kizior, Aneta Jezierska, Bartlomiej M. Szyja
Summary: The theoretical investigation of partial oxidation of methane to methanol using Ru-porphyrin complexes as catalysts revealed the significant role of the Spin Crossover phenomenon in the reaction kinetics, and the impact of non-covalent interactions on the electronic structure during the reaction.
Article
Chemistry, Physical
Elzbieta Dziadyk-Stopyra, Ionut Tranca, Daniel Smykowski, Bartlomiej M. Szyja
Summary: We present a DFT analysis comparing the role of Cu-Ni synergistic effect with pure Cu catalyst in CO2 reduction to C2H4. The study focuses on the thermodynamic stability of reactive intermediates along the proposed pathway. Results show that addition of Ni decreases the potential needed for the reaction and leads to different preferred pathways based on Cu:Ni ratio and stability of intermediates. This suggests that the presence of Ni can change the reaction mechanism despite Cu's direct interaction with the intermediates.
Article
Chemistry, Physical
Wiktor Zierkiewicz, Beata Kizior, Mariusz Michalczyk, Aneta Jezierska, Steve Scheiner
Summary: In this study, the ability of Pd and Pt to act as electron donors within the context of pnicogen, chalcogen, and halogen bonds was systematically assessed through quantum calculations. The results showed that Pt forms stronger bonds than Pd, and the bond strength is correlated with the size of the A atom of the acid.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)