Article
Chemistry, Physical
Pavol Tisovsky, Jana Donovalova, Jozef Kozisek, Miroslav Horvath, Anton Gaplovsky
Summary: In this study, the concentration of metals in a mixture of organic solvents and water or organic solvents was programmatically changed through the modulation of light of different wavelengths using hydrazone complexes or hydrazones themselves in the presence of metals. It was found that the ligand underwent photochemical isomerization under light, resulting in the formation of different complexes. The E-isomers formed stable complexes with metals, while the Z-isomers did not form complexes with these metals.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Chemistry, Applied
Mannar R. Maurya, Abhilasha Chauhan, Akash Verma, Umesh Kumar, Fernando Avecilla
Summary: Two dioxidomolybdenum(VI) complexes and their heterogenized complexes supported on amine-functionalized titanium dioxide have been synthesized and characterized. These complexes exhibit high activity and yield as phenoxazinone synthase mimicking catalysts in the oxidation reaction of 2-aminophenol.
Article
Chemistry, Multidisciplinary
Mannar R. Maurya, Devesh Singh, Fernando Avecilla, Akhilesh Sharma, Puneet Gupta
Summary: Five new tricompartmental ligands with three tridentate dibasic ONO sites were synthesized from the condensation of benzene-1,3,5-tricarbohydrazide and 4-formyl-5-pyrazolone derivatives. These ligands formed tris{cis-[MoO2]} complexes with good catalytic potential for oxidation reactions and bromination reactions. The complexes exhibited high selectivity and yield for specific reactions, making them useful functional models of vanadium-dependent haloperoxidases.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Esko Salojarvi, Anssi Peuronen, Narhari Sapkota, Ari Lehtonen
Summary: Molecular molybdenum complexes with sulfur donor ligands are studied as model compounds for molybdenum enzymes, showing a stable Mo(IV) complex after reaction with thionation reagent. The complexes retain the original geometry, despite formally being Mo(IV) systems.
Article
Spectroscopy
Fernanda Lima Matos, Evandro L. Duarte, Gabriel S. V. Muniz, Erix Alexander Milan-Garces, Kaline Coutinho, M. Teresa Lamy, Antonio R. da Cunha
Summary: In this study, the optical absorption and emission spectra of Barbaloin in aqueous solution at different pH values were characterized. The pKa values of Barbaloin were determined through pH titration, and it was found to be higher than that of a similar molecule without the sugar moiety. Quantum mechanical calculations were performed to assign the positions of deprotonation in Barbaloin, and the instability of Barbaloin in high pH solutions was discussed. The results of this study have important implications for evaluating the mechanism of action and pharmacological parameters of Barbaloin.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Multidisciplinary
Mannar R. Maurya, Abhilasha Chauhan, Fernando Avecilla
Summary: In this study, two mononuclear cis-[(MoO2)-O-VI] complexes were synthesized and then supported on amine-functionalized titanium dioxide to obtain heterogeneous complexes. Various characterization techniques were used to analyze the isolated complexes, and the geometric structure of the complexes was determined by single-crystal X-ray diffraction analysis. The study found that these complexes can serve as biomimetic catalysts for phenoxazinone synthase, effectively catalyzing the reaction and achieving high yields.
Article
Chemistry, Inorganic & Nuclear
Jerome Kretzschmar, Satoru Tsushima, Christian Lucks, Elisabeth Jaeckel, Ronny Meyer, Robin Steudtner, Katharina Mueller, Andre Rossberg, Katja Schmeide, Vinzenz Brendler
Summary: This research investigates the interactions between the uranyl(VI) ion and citric acid using multiple spectroscopic techniques and computational methods, revealing the existence of two diastereomers of a dimeric complex and their interconversion in acidic solution. Furthermore, ternary dimeric and trimeric complexes were identified at higher pH values. The study also challenges previous misconceptions in the aqueous U(VI)-citric acid solution chemistry and provides a basis for future studies on U(VI) complexation.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Atanu Banerjee, Sushree Aradhana Patra, Gurunath Sahu, Giuseppe Sciortino, Federico Pisanu, Eugenio Garribba, M. Fernanda N. N. Carvalho, Isabel Correia, Joao Costa Pessoa, Hans Reuter, Rupam Dinda
Summary: In this study, a series of mononuclear non-oxido vanadium(IV) complexes are synthesized and characterized. The complexes show distorted octahedral or trigonal prismatic arrangement around the metal center. The EPR and DFT data suggest the coexistence of different isomers in solution, and the ESI-MS results indicate partial oxidation of the complexes. The complexes exhibit moderate binding affinity towards bovine serum albumin and show cytotoxicity against cancer cells by inducing cell death through apoptosis.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Kazumasa Oshima, Kyogo Ito, Eriko Konishi, Tsuyoshi Yamamoto, Jun Fukai, Toshihisa Kajiwara, Masahiro Kishida
Summary: Selenium and its compounds, especially selenate (VI), are highly toxic to humans due to their high solubility in water. Noble metal particles were used as reaction sites with a reductant to promote the reductive reaction of selenate and make it easier to remove from water. Rhodium particles supported on TiO2 (Rh/TiO2) showed the highest removal performance for selenate in aqueous solution.
Article
Engineering, Environmental
Long Chen, Yunfei Xue, Tao Luo, Feng Wu, Akram N. Alshawabkeh
Summary: A metal-free and highly efficient electro/UV/sulfite process was developed to produce sulfate radical (SO4^·-) for water treatment. This process effectively removes micropollutants and Escherichia coli from synthetic and natural water matrices.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Green & Sustainable Science & Technology
Hong Tian, Lanbin Wang, Yaguang Du, Yan Sun, Fan Wu, Hengpeng Ye, Shaohua Chen, Li Guo, Tian C. Zhang
Summary: This study introduced a new method for COPR treatment, which efficiently reduced and immobilized Cr(VI) in COPR with the assistance of natural pyrite under mechanochemical process.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Biochemistry & Molecular Biology
Marek Pajak, Magdalena Wozniczka, Jakub Fichna
Summary: In this study, the complexing properties of ceftazidime with Fe(III) ions in aqueous solutions were characterized using UV-vis spectrophotometric and potentiometric methods. The stability constant for the Fe(III)-ceftazidime complex was calculated based on pH-metric studies.
Article
Environmental Sciences
Hailong Tian, Xuehui Wang, Rubin Pan, Jialu Qin, Nuo Xu, Xianfeng Huang
Summary: By decreasing the dissolved oxygen concentration, negligible Cr(VI) accumulation was achieved during the photo-oxidation of Cr(III) complexes. The total Cr concentration was reduced from 9.0-11.0 mg/L to below 1.0 mg/L, and complete elimination of Cr(VI) was observed after 30-60 min at pH 6.0-9.0.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Pharmacology & Pharmacy
Mirjana S. Jankulovska, Ilinka Spirevska, Vesna Dimova, Milena Jankulovska
Summary: This study investigated the acid-base properties of five 4-nitrobenzaldehyde-4-substitutedphenyl-1-carbonylhydrazones using UV-Vis spectroscopy in sodium hydroxide media. The results showed that most hydrazones underwent dissociation in one step, with the exception of one that had two dissociation steps. The influence of ethanol on the UV-Vis spectra was eliminated using Characteristic Vector Analyses. The study also determined stoichiometric and thermodynamic dissociation constants for the hydrazones.
CURRENT PHARMACEUTICAL ANALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Lu-Shuang Li, Ying-Xia Zhang, Wei Gong, Jing Li
Summary: In this study, novel beta-cyclodextrin doped carbon dots (CCDs) were successfully prepared, exhibiting excellent optical properties, stability, and selective recognition effects. A portable isoniazid fluorescence sensor was developed with low detection limit and wide detection range, and it showed satisfactory recovery in urine samples.
Article
Biochemistry & Molecular Biology
Sara Matic, Ivana Kekez, Marko Tomin, Ferenc Bogar, Filip Supljika, Sasa Kazazic, Maja Hanic, Shalinee Jha, Hrvoje Brkic, Benjamin Bourgeois, Tobias Madl, Karl Gruber, Peter Macheroux, Dubravka Matkovic-Calogovic, Mihaela Matovina, Sanja Tomic
Summary: This study highlights the synergy between theory and experiment in elucidating the binding mechanism between DPP III and KEAP1, shedding light on the significance of the NRF2-KEAP1 signaling pathway in antioxidant stress response.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2021)
Article
Chemistry, Physical
Josipa Mihalinec, Matea Pajski, Pascal Guillo, Mirna Mandaric, Nikol Bebic, Jana Pisk, Visnja Vrdoljak
Summary: Molybdenum(VI) catalysts were prepared through reactions in methanol or acetonitrile, resulting in different structures of complexes. The polynuclear compound was characterized by X-ray diffraction analysis, and the catalytic performance in alcohol oxidation reactions was evaluated for carveol, cyclohexanol, and butan-2-ol.
Article
Chemistry, Physical
Arijeta Bafti, Marta Razum, Edi Topic, Dominique Agustin, Jana Pisk, Visnja Vrdoljak
Summary: The study investigated the catalytic activity of dinuclear and mononuclear molybdenum(VI) complexes with aroylhydrazonato ligands in the epoxidation of cyclooctene and oct-1-ene. Different isomers of aroylhydrazones led to specific [MoO2L] units with varying catalytic activity, with TBHP in decane providing outstanding results for cyclooctene epoxidation. DFT calculations confirmed the relationship between ligand nature and reactivity with oxidant agents TBHP and H2O2, proposing a plausible mechanism with H2O2 after considering various pathways.
MOLECULAR CATALYSIS
(2021)
Article
Biochemistry & Molecular Biology
Ivana Kekez, Mihovil Faletar, Mario Kekez, Laura Cendron, Maya Wright, Giuseppe Zanotti, Dubravka Matkovic-Calogovic
Summary: The research characterizes the CrdA protein from Helicobacter pylori and determines its binding affinity towards copper. The study suggests that the interaction between CrdA and copper is physiologically relevant and crucial for the survival of H. pylori.
Article
Crystallography
Mirna Mandaric, Biserka Prugovecki, Ivana Kekez, Danijela Musija, Jelena Parlov Vukovic, Marina Cindric, Visnja Vrdoljak
Summary: Complex salts and co-crystals were synthesized by solution-based and mechanochemical methods. Stability of the complex salts could be reinforced by the incorporation of an azine compound. Solvent-mediated transformations led to different ligand replacement reactions.
Article
Crystallography
Edi Topic, Vladimir Damjanovic, Katarina Piculjan, Visnja Vrdoljak, Mirta Rubcic
Summary: A series of aryl-functionalized alkyl dihydrazones were synthesized and characterized in terms of structure and properties. The compounds showed good thermal stability and antibacterial activity.
Article
Biochemistry & Molecular Biology
Visnja Vrdoljak, Tomica Hrenar, Mirta Rubcic, Gordana Pavlovic, Tomislav Friganovic, Marina Cindric
Summary: This study investigated the propensity of 4-hydroxybenzhydrazone-related ligands derived from 3-methoxysalicylaldehyde, 4-methoxysalicylaldehyde, and salicylaldehyde to act as chelating and/or bridging ligands in Ni(II) complexes. Different clusters with various nuclearities were prepared and characterized. The ligands in these clusters acted as singly or doubly deprotonated ligands. The stability and substituent effects of square-planar complexes were studied and quantified. The crystal and molecular structures of several complexes were determined.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Chemistry, Multidisciplinary
Miquel Duran-Frigola, Marko Cigler, Georg E. Winter
Summary: Only 20% of the human proteome is considered druggable, but targeted protein degradation (TPD) offers a solution to this limitation. TPD relies on small molecules to induce the proximity between a protein of interest (POI) and an E3 ubiquitin ligase, leading to degradation of the POI. Advances in multiomics profiling, artificial intelligence, and machine learning (AI/ML) will play a crucial role in overcoming challenges in this field.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Mirta Rubcic, Ivan Halasz, Gordana Pavlovic, Damir Pajic, Edi Topic, Marina Cindric
Summary: This study demonstrates the flexibility of a 1,5-bis(salicilydene)carbohydrazone ligand when combined with a divanadium [V2O3]4+ core, leading to the formation of a discrete tetranuclear complex and two polymeric chain-like structures. These structures are supramolecular isomers that are mutually related. The specific isomer formed is controlled by the reaction conditions. The structures were characterized using X-ray diffraction and infrared spectroscopy, and their relative stability was evaluated through competitive slurry and thermal experiments. This research highlights the adaptability of oxovanadium species in coordinating building blocks and the diversity of assembly modes for related structural units.
CROATICA CHEMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Dino Kuzman, Vladimir Damjanovic, Vladimir Stilinovic, Marina Cindric, Visnja Vrdoljak
Summary: Seven different nuclearities of tetraammineoxalatocobalt(III) salts with oxomolybdate anions were successfully isolated using a one-pot reaction method, confirming that carboxylic acids act as both ligands and structure-directing agents. The polyoxomolybdate anions were built from various units depending on the carboxylic acid additive used during synthesis, and the products were characterized using a variety of analytical techniques.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Nikol Bebic, Edi Topic, Mirna Mandaric, Tomica Hrenar, Visnja Vrdoljak
Summary: Five hexamolybdate and five octamolybdate-based organic-inorganic hybrid assemblies were synthesized and characterized using X-ray crystallography, IR-ATR, and TG analysis. The study investigated the effects of reaction conditions and the coordination nature of Mo(VI) complex cations on the structure of the hybrid compounds, as well as the impact of different metal-organic components and solvents on the formation of the hybrids.
Meeting Abstract
Biochemistry & Molecular Biology
S. Matic, I. Kekez, M. Hanic, F. Supljika, M. Matovina, S. Tomic
Meeting Abstract
Biochemistry & Molecular Biology
J. Rokov-Plavec, M. Kekez, V. Evic, V. Zanki, R. Soic, D. Matkovic-Calogovic, I. Kekez
Article
Chemistry, Multidisciplinary
Zihan Ma, Lishuang Wang, Tingting Chen, Guangning Wang
Summary: In this study, two kinds of 3D self-doped (N/O) lilac-based and coriander-based porous carbons with high performance have been prepared.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Qin Wang, Yun-Fan Yan, Jiao-Lin Weng, Ying Huang, Fu Yang, Hao-Hui Xie, Fei Tan, Fa-Kun Zheng, Jian-Gang Xu
Summary: Balancing energy and mechanical sensitivities is a challenging issue in the field of energetic materials. This study constructed a 3D energetic metal-organic framework with nitrogen-rich ligand and NO3- anions. The framework demonstrated high stability, energy density, and excellent mechanical sensitivities, making it a potential insensitive energetic material.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Marrium Saeed, Urooj Kamran, Amina Khan, Md Irfanul Haque Siddiqui, Hasan Jamal, Haq Nawaz Bhatti
Summary: In this study, magnesium-aluminum layered double hydroxides (Mg-Al-LDH) were synthesized using an environmentally friendly hydrothermal technique for adsorbing the dye reactive green 5 (RG5). To improve the adsorption capability, composites were prepared by combining Mg-Al-LDH with low-cost Mangifera indica stone biomass (MISB). The results showed that the composites had high adsorption capacities for RG5 dye and could be regenerated.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Xuanlin Zhan, Xiaojie Li, Yunyan Zeng, Siyan Jiang, Chao Pan, Shiyu Pan, Jiaquan Huang, Heqian Zhang, Zhiwei Qin
Summary: This study reports on the potential prospects of natural products derived from the rhizosphere for the development of antibiotics and herbicides, as well as the advancements in cultivating a mutant strain that produces a substantial quantity of lydicamycins, a potent family for herbicide development.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Jie Zhu, Jiangtao Yu, Linhua Zhu, Xiaoxiao Yu, Jixing Liu, Yanhong Chao, Jingzhou Yin, Peiwen Wu, Jian Liu, Wenshuai Zhu
Summary: This study successfully demonstrates the 3D printing of attapulgite monoliths and investigates the influence of thermal treatment on their properties. The thermal treated monoliths show superior catalytic performance at low temperatures.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yanzhu Ye, Yixiang Ye, Jiannan Cai, Zhongshui Li, Shen Lin
Summary: In this paper, a novel Pt/CoP/C photo-electro synergistic catalyst was successfully synthesized and its performance was investigated. The catalyst exhibited excellent photo-electro catalytic performance, with significantly higher hydrogen production compared to a commercial catalyst. The introduction of cobalt phosphide and the existence of Co3O4 were identified as key factors for enhancing the catalytic activity.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nurul Hidayah Abu Bakar, Wan Norfazilah Wan Ismail, Hartina Mohd Yusop, Noreen Farzuhana Mohd Zulkifli
Summary: Hydrophobic coatings inspired by the lotus effect have gained popularity for their ability to solve various problems. The sol-gel method, utilizing silica, alumina, and titania, is explored as an environmentally friendly approach to produce water-based hydrophobic coatings. This study focuses on producing water-based hydrophobic coatings for cotton and polyester fabrics using a one-step sol-gel method. The coated fabrics exhibited improved hydrophobic properties, altered surface morphologies, and lower air permeability compared to uncoated fabrics. TEOS-PDMS coating provides a promising approach for enhancing the hydrophobic and surface properties of cotton and polyester fabrics.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nikita Belko, Hanna Maltanava, Anatol Lugovski, Polina Shabunya, Sviatlana Fatykhava, Evgeny Bondarenko, Pavel Chulkin, Sergey Poznyak, Michael Samtsov
Summary: This study investigates the difference in electrochemical behavior between rhodamine B hydrazide and rhodamine B acylhydrazone, and finds that rhodamine B acylhydrazone exhibits higher reversibility in electrooxidation. These results can be applied for developing new sensors with desired electrochemical properties.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Showket Ahmad Bhat, Mohd Ikram
Summary: In this study, 0-3 particulate multiferroic composites were synthesized and characterized. The composites exhibited excellent ferroelectric and ferromagnetic properties, as well as high piezoelectric strain and magnetoelectric coupling effects.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Carla Gomes, Mariana Costa, Susana M. M. Lopes, Bernardo Albuquerque Nogueira, Rui Fausto, Jose A. Paixao, Teresa M. V. D. e Melo, Luisa M. D. R. S. Martins, Marta Pineiro
Summary: The development of sustainable processes requires the integration of green chemistry principles. In this study, a solvent-free synthesis method was developed to prepare new copper catalysts, which efficiently catalyze cycloaddition reactions under solvent-free mechanochemical conditions. Through this process, the principles of atom economy, reduction of solvents and auxiliaries, design for energy efficiency, and reduction of derivatives and catalysis are combined.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Zhihua Liu, Jinzhe Li, Jianguo Zhou
Summary: This study demonstrates the enhancement of photoelectrochemical activity of BiFeO3 photoelectrodes through ion modification, which increases visible light absorption and active area, leading to improved PEC water splitting performance.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yisheng Zhang, Wensong Li, Jing Li, Fang Li, Wei Xue, Xinqiang Zhao, Yanji Wang
Summary: Pt/C and SO42-/ZrO2 were used as catalysts for the synthesis of p-aminophenol through the catalytic transfer hydrogenation of nitrobenzene in water with formic acid as the hydrogen source. The optimal Pt loading for PAP selectivity was found to be 1 wt%. The presence of different valence states of Pt affected both the nitrobenzene hydrogenation and formic acid decomposition. Among different solid acid catalysts tested, SO42-/ZrO2 exhibited the highest catalytic activity for p-aminophenol formation. Under the optimized reaction conditions, the conversion of nitrobenzene reached 80.0%, with a selectivity of 47.6% for p-aminophenol.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Pradyota Kumar Behera, Papita Behera, Amlan Swain, Santosh Kumar Sahu, Ajeena Sahoo, Laxmidhar Rout
Summary: We have developed a simple and direct method for the synthesis of diaryl ether using an oxygen bridged bimetallic CuMoO4 nanocatalyst under mild reaction conditions. The catalyst exhibited tolerance towards a wide range of substrates with various functional groups. It is efficient and recyclable. This methodology allows easy access to nitrofen derivatives (herbicides) from unactivated 2,4-dichlorophenol, which are important for agriculture and pharmaceuticals.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yihua Fu, Yan Zhang, Changwei Hu, Zhishan Su
Summary: The mechanism of the reaction between CO2 and styrene oxide for cyclic carbonate was revealed using density functional theory calculations. The noncatalytic reaction occurred via a concerted mechanism, while in the presence of guanidine and tetrabutylammonium iodide (TBAI) co-catalysts, the epoxide ring-opening by nucleophilic attack of an iodide anion was predicted to be the rate-determining step. Guanidine acted as the H-bond donor to activate styrene oxide, facilitating the reaction with a lower activation barrier.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Saikat Khamarui, Sirshendu Ghosh
Summary: Copper nanorods (Cu-NRs) exhibit significant plasmonic behavior and can act as efficient catalysts in redox processes and coupling. A benign decarboxylative approach, utilizing localized surface plasmon resonance (LSPR) assisted catalysis with Cu-NRs, has been developed for the production of alkane analogues from alkyl carboxylic acids under visible light. The catalyst shows a broad substrate scope and high functional group tolerance, without the need for an external oxidant or proton source. A plausible mechanism for this recyclable nano-catalyst has also been proposed based on control experiments.
NEW JOURNAL OF CHEMISTRY
(2024)
