Article
Chemistry, Applied
Graycyelle R. S. Cavalcanti, Francisco Rodrigues, Guanzheng Zhuang, Sebastien Balme, Jean-Marc Janot, Maria G. Fonseca, Maguy Jaber
Summary: Hybrid pigments based on carminic acid stabilized by clay minerals were prepared and characterized using various techniques. The pigments showed different stability levels, with the hydrogels covered in polyorganosilane exhibiting the highest light stability.
Article
Food Science & Technology
Qian Liu, Zhiyong He, Maomao Zeng, Fang Qin, Zhaojun Wang, Guoping Liu, Jie Chen
Summary: This study investigated the dyeing effects of carminic acid and carminic aluminum lake on surimi, minced meat, and milk, and explored the influence of protein, metal ions, and food additives on their colors. The colors varied with different substrates and conditions, highlighting the importance of pH, protein type, and metal ions in determining the final color. The study provides valuable insights for the application of carminic acid and carminic aluminum lake in food science.
FOOD SCIENCE & NUTRITION
(2021)
Article
Engineering, Environmental
Boles law Szadkowski, Waldemar Maniukiewicz, Przemyslaw Rybinski, Emmanuel Beyou, Anna Marzec
Summary: This paper presents the design of natural, high-performance hybrid pigments consisting of carminic acid incorporated on different porous minerals. The prepared hybrid pigments showed improved thermal and chemical stability, as well as efficient acid-base regulation. Applying these hybrid pigments in polymer composites can enhance photo-stability and reduce flammability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Dongsoo Yang, Woo Dae Jang, Sang Yup Lee
Summary: Researchers have successfully biosynthesized carminic acid from glucose in engineered Escherichia coli. Through enzyme screening and optimization, the biosynthesis of carminic acid was achieved.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Biochemistry & Molecular Biology
Iulia V. Savina, Anton A. Ivanov, Darya V. Evtushok, Yakov M. Gayfulin, Andrey Y. Komarovskikh, Mikhail M. Syrokvashin, Mariia N. Ivanova, Igor P. Asanov, Ilia V. Eltsov, Natalia V. Kuratieva, Yuri V. Mironov, Michael A. Shestopalov
Summary: This study presents the synthesis and characterization of new chalcogenide molybdenum clusters. The oxidized and reduced forms of the clusters have similar geometries and can be reversibly transformed into each other. Comprehensive characterization reveals the different charge states and magnetic properties of molybdenum in the clusters. DFT calculations contribute to the understanding of the chemistry of molybdenum chalcogenide clusters.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Ayelen F. Crespi, Paula N. Zomero, Veronica M. Sanchez, Ana L. Perez, Carlos D. Brondino, Daniel Vega, Enrique Rodriguez-Castellon, Juan M. Lazaro-Martinez
Summary: This study describes the synthesis of two copper soluble complexes for the activation of hydrogen peroxide and the generation of reactive oxygen species. By combining various experimental and computational methods, the chemical structure of the ligands and metal ions was studied in detail. The results showed that the copper complexes were effective for the activation of H2O2 and only generated hydroxyl as the reactive oxygen species. These complexes can efficiently remove dyes.
Article
Chemistry, Analytical
Lili Chen, Shuang You, Xiaotong Wang, Dong Li, Shuna Ren, Lihua Chen
Summary: This study developed an electrochemical biosensor with dual-signal outputs for simultaneous detection of CV-A16 and EV-A71. Hairpin-structure DNA probes were prepared by conjugating CA or hemin into specific genes, allowing for target-induced opening of the probes and generating non-overlapping electrical signals. The biosensor showed a wide dynamic range and high sensitivity, and it was successfully applied to detect the target viruses in serum samples.
Article
Chemistry, Applied
Jian Liu, Juan Zhu, Feng Zhao, Danhua Guo, Yuanbin She, Yang Zhou
Summary: A novel strategy using galvanic displacement-based substrates for identifying anthraquinone dyes through surface enhanced Raman spectroscopy (SERS) is presented. The use of silver microparticles, particularly dendritic ones, formed by reducing silver nitrate with zinc or copper, allows for a quick and cost-effective SERS analysis within 20 minutes. Textile fibers can be covered almost instantaneously with the substrates once the galvanic displacement reaction is triggered.
Article
Food Science & Technology
Marzieh Alizadeh, Ersin Demir, Nida Aydogdu, Najmeh Zare, Fatemeh Karimi, S. Masoud Kandomal, Hassan Rokni, Younes Ghasemi
Summary: This study provides a comprehensive review of the latest developments in the electrochemical impressions of important dyestuffs, specifically amaranth and carminic acid. Electroanalytical methods, particularly voltammetric techniques, have been successfully used for the determination of these food colors due to their quick analysis durations, high precision and accuracy, and great selectivity.
FOOD AND CHEMICAL TOXICOLOGY
(2022)
Article
Chemistry, Physical
Guilherme Colherinhas
Summary: A combined approach of classical molecular dynamics simulations and quantum calculations was used to update the atomic charges of aromatic amino acids in water solution. The adjustment of electrical distribution had significant impact on the spectroscopic properties of the amino acids, with deviations observed in the NMR and absorption spectra. Updates to the CHARMM36 atomic charges resulted in modifications to solute-solvent interactions and changes in electronic absorption spectrum.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Leonardo B. A. Oliveira, Wesley B. Cardoso, Guilherme Colherinhas
Summary: This study combines quantum calculations with molecular dynamics simulations to investigate the polarization effects on different amino acids structures, resulting in findings that are in full agreement with experimental results, thus validating the reliability of the approach.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Evan Wenbo Zhao, Erlendur Jonsson, Rajesh B. Jethwa, Dominic Hey, Dongxun Lyu, Adam Brookfield, Peter A. A. Klusener, David Collison, Clare P. Grey
Summary: The study introduces in situ (online) EPR and coupled EPR/NMR methods to investigate redox flow batteries, focusing on the redox-active electrolyte 2,6-dihydroxyanthraquinone (DHAQ). By detecting and quantifying radical anions during electrochemical cycling, the concentration-dependent behavior of these species was determined. The combination of EPR and NMR techniques allowed for the determination of electron transfer rate constants and the correlation of concentration changes with capacity fade in the battery.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Biochemistry & Molecular Biology
Yusuf A. Theibich, Stephan P. A. Sauer, Leila Lo Leggio, Erik D. Hedegard
Summary: Lytic polysaccharide monooxygenases (LPMOs) are enzymes that bind and disrupt polysaccharides, boosting depolymerization. Understanding the structure-function relationships in the binding process is crucial, and using EPR spectroscopy to analyze hyperfine coupling constants (HFCs) is useful but requires careful computational setup selection.
COMPUTATIONAL AND STRUCTURAL BIOTECHNOLOGY JOURNAL
(2021)
Article
Chemistry, Applied
Dongdong Yuan, Guohui Bai, Yuhan Liu, Le Jing, Chengtao Wang, Guorong Liu
Summary: The fundamental properties and formation mechanism of CaCO3-MPs lakes were investigated. The results showed that CaCO3 had a high affinity for MPs and could form colorant lakes. The adsorption of MPs by CaCO3 followed the Freundlich isothermal model, indicating physical adsorption. UV/Vis spectroscopy confirmed the complex formation between Ca2+ and MPs via physical bonding.
Article
Engineering, Chemical
Gozde Bayer, Amirreza Shayganpour, Jasim Zia, Ilker S. Bayer
Summary: Edible gels can be used as functional modifiers for biodegradable polymers, showing significant plasticizing effects. These gels, rich in glucose and sugars, contain less water. Carminic acid, added to the gels, acts as a powerful antioxidant and reduces oxygen permeation through the films. The gels also release carminic acid, exhibit color change, and can be used for food spoilage detection.
JOURNAL OF FOOD ENGINEERING
(2022)
Article
Archaeology
Helene Pasco, Leslie Carlyle, Marco Faustini, Helen Glanville, Clement Sanchez, Philippe Walter, Laurence de Viguerie
Summary: Gelled mediums were widely used in painting during the nineteenth century to modify the properties of paint. Reconstructions and characterization using FTIR revealed the formation of metal-resin soaps and the specific role of lead in gelation.
STUDIES IN CONSERVATION
(2023)
Article
Soil Science
Wulf Amelung, Nele Meyer, Andrey Rodionov, Claudia Knief, Michaela Aehnelt, Sara L. Bauke, Danh Biesgen, Stefan Dultz, Georg Guggenberger, Maguy Jaber, Erwin Klumpp, Ingrid Koegel-Knabner, Volker Nischwitz, Steffen A. Schweizer, Bei Wu, Kai U. Totsche, Eva Lehndorff
Summary: Microaggregates are important structural components of soils, but their formation processes and transformation over time are poorly understood. This study used isotope labelling to investigate the role of potential organic gluing agents and inorganic building units in soil aggregation processes. The results showed that the presence of plants facilitated the rapid formation of stable macroaggregates, while the decomposition of organic components and the contribution of secondary oxides and clay minerals increased over time.
Article
Chemistry, Physical
Qiang Li, Romain Berraud-Pache, Yongjie Yang, Christelle Souprayen, Maguy Jaber
Summary: This study synthesized a bio-organoclay by modifying bentonite with natural soybean lecithin, and analyzed the effects of different factors on the properties of the modified bentonite. The results showed that reaction time and temperature had little impact on the properties of the modified bentonite, while an increase in pH and lecithin concentration significantly increased the interlayer space.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Yongjie Yang, Maguy Jaber, Laurent J. Michot, Baptiste Rigaud, Philippe Walter, Lucie Laporte, Kenan Zhang, Qinfu Liu
Summary: This study separated and classified three different size distributions of high-defect kaolinite particles from Quaternary sedimentary kaolin in Guangxi Zhuang Autonomous Region of China. Various techniques were used to monitor the particle sizes and analyze the structure and disorder of the kaolinite. The results showed that the smallest particle size kaolinite had higher degrees of broken bonds and more disordered structure, and the degree of disorder increased as the particle size decreased.
APPLIED CLAY SCIENCE
(2023)
Editorial Material
Chemistry, Multidisciplinary
Sebastien Balme
ACS CENTRAL SCIENCE
(2023)
Review
Geochemistry & Geophysics
Robson Cunha, Pollyana Trigueiro, Maria del Mar Orta Cuevas, Santiago Medina-Carrasco, Thiago M. Duarte, Luzia M. de C. Honorio, Dihego H. L. Damacena, Maria Gardennia Fonseca, Edson C. da Silva-Filho, Josy A. Osajima
Summary: In recent years, there has been significant scientific interest in anthocyanins, natural dyes, due to their intrinsic antioxidant properties and health benefits. However, their instability limits their practical use. To address this, researchers have looked into how clay minerals can be used to stabilize anthocyanins by taking advantage of characteristics such as adsorption capacity, good surface chemistry, and ion exchange capacity. This review summarizes various studies that have explored the use of different clays or clay minerals as stable inorganic matrices for improved color stability and resistance against thermal- and photodegradation of anthocyanins. Additionally, potential applications for the resulting anthocyanin-based hybrids are discussed.
Article
Chemistry, Multidisciplinary
Beata Taudul, Frederik Tielens, Monica Calatayud
Summary: In this study, a computational protocol is developed to accurately calculate the Raman response of pure TiO2 materials. The origin of the Raman peaks is analyzed, and a structure-Raman mapping is performed to account for various factors. This study provides guidelines for accurate characterization of different titania systems using Raman spectroscopy.
Article
Materials Science, Multidisciplinary
Luis H. de Oliveira, Idglan S. de Lima, Adriana N. dos Santos, Pollyana Trigueiro, Humberto M. Barreto, Juan Antonio Cecilia, Josy A. Osajima, Edson C. da Silva-Filho, Maria G. Fonseca
Summary: In this study, the incorporation of chlorhexidine into sodium bentonite was evaluated by monitoring the interaction between the clay sample and organic molecules. The antibacterial activity of the hybrids against Staphylococcus aureus and Escherichia coli was also tested. The results showed that chlorhexidine was successfully intercalated into clay, and the hybrids exhibited excellent antibacterial activity.
MATERIALS TODAY COMMUNICATIONS
(2023)
Review
Engineering, Environmental
Dihego Henrique L. Damacena, Pollyana Trigueiro, Victor Hugo Monteiro, Luzia Maria C. Honorio, Thiago Marinho Duarte, Robson Cunha, Marcelo B. B. Furtini, Maria Gardennia Fonseca, Edson C. da Silva-Filho, Josy A. A. Osajima
Summary: Saponite, a clay mineral with distinctive characteristics, can be modified and used to effectively remove hazardous contaminants in water treatment. Various methods for modifying saponite have been described, and saponite derivatives have shown high efficiency in photocatalytic and adsorption processes.
ENVIRONMENTAL PROCESSES-AN INTERNATIONAL JOURNAL
(2023)
Article
Chemistry, Physical
Come Thillaye du Boullay, Maguy Jaber, Maiwenn Le Denic, Floriane Gerony, Romain Bordes, Guillaume Merguet, Anne-Laure Rollet, Philippe Walter, Laurence de Viguerie
Summary: In the 15th century, the use of oil paint gradually replaced egg yolk as a binder in tempera painting, leading to a major change in painting technique in Europe. A mixed technique called tempera grassa, which combines egg and oil as emulsion, was occasionally used during this transitional period. This article investigates the physico-chemical aspects of emulsion-based binders, prepared with egg yolk and either raw linseed oil or lead-treated linseed oil, to better understand this historical painting practice.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Multidisciplinary Sciences
Philippe Martinez, Matthias Alfeld, Catherine Defeyt, Hishaam Elleithy, Helen Glanville, Melinda Hartwig, Francois-Philippe Hocquet, Maguy Jaber, Pauline Martinetto, David Strivay, Philippe Walter
Summary: The study of ancient Egyptian paintings started in the 19th century with the development of Egyptology. By the 1930s, extensive research had been conducted on the materials and techniques used. However, most of these studies were done in museums, with limited understanding of the actual painted surfaces. To address this gap, an interdisciplinary project employed portable analysis tools to study the physical composition of the paintings on-site, providing a stronger foundation for scientific hypotheses and a deeper understanding of ancient Egyptian art.
Article
Anthropology
Marcela Sepulveda, Benjamin Ballester, Gloria Cabello, Sebastian Gutierrez, Philippe Walter
Summary: This study focuses on color and polychromy in the prehistory of the Atacama Desert. By analyzing objects from different funerary sites, the research reveals that there was a simultaneous use of visible information transfer and local production of mineral pigments in the late Atacama culture. Through the analysis of chemical composition and physical characteristics, the study also evaluates the social significance of mineral polychromy.
ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES
(2023)
Editorial Material
Chemistry, Multidisciplinary
Frederik Tielens
Article
Humanities, Multidisciplinary
Laurence de Viguerie, Helen Glanville, Marie Radepont, Angela Cerasuolo, Alessandra Rullo, Claudio Seccaroni, Philippe Walter
Summary: The Transfiguration by Giovanni Bellini in the Museo di Capodimonte (Naples) is an iconic image depicting a transcendental event in Christianity. Through non-destructive chemical imaging, this study explores the materials and techniques used by the artist to represent this divine event, revealing the earliest use of the pigment stibnite. The research highlights the continuity of Bellini's techniques from his early works and his knowledge of Netherlandish painting, shedding light on how he achieved the luminosity in his portrayal of the divine.
Article
Chemistry, Applied
Leping Chen, Yanfen Wang, Tingyu Shi, Tiantian Ma, Yang Li, Huayu Qiu, Shouchun Yin, Meier Gu
Summary: This study successfully overcame the limitations of the heavy atom effect by introducing iodine atoms and innovatively enhancing the structure while weakening stacking behavior, achieving high efficiency and precision in photodynamic therapy and photothermal therapy.
Article
Chemistry, Applied
Bingpeng Guo, Honghan Sa, Peng Zhang, Guiwen Hao, Mengyu Li, Qingqing Jiang, Baoying Li, Wei Shu, Changxiang Shao
Summary: The design of ratiometric fluorescence probes with large Stokes shift is of great significance in detecting and imaging target substances in complex organisms. In this study, a novel fluorophore with a large Stokes shift was easily obtained, and a fluorescence probe based on it demonstrated rapid response, high selectivity, and sensitivity towards peroxynitrite. The probe also showed excellent biocompatibility and remarkable mitochondrial targeting ability, making it suitable for proportional imaging of peroxynitrite in living cells and zebrafish.
Review
Chemistry, Applied
Haidong Huang, Xiaohui Wang, Xinyang Li, Yichen Li, Guojin Liu, Lan Zhou, Jianzhong Shao
Summary: This article introduces the application of responsive photonic crystals in anti-counterfeiting technology, with a focus on the preparation principle, classification, and preparation methods.
Article
Chemistry, Applied
Yunpeng Wang, Tao Zhao, Xiaoye Bi, Chencheng Lv
Summary: In this study, three novel carbene dyes were designed to achieve environmentally friendly dyeing processes. The dyes formed covalent bonds with fibers and exhibited good dyeing performance and high color fastness. These findings highlight the potential of the novel carbene dyes in promoting green production in the textile industry.
Review
Chemistry, Applied
Yizhe Yan, Xiaopei Zhu, Jia-Xin Cao, Yuan He, Shaoqing Li, Jian-Yong Wang
Summary: In this paper, 1,3,5-triazine dyes were successfully synthesized and their photophysical properties were studied. Two probes were selected for further investigation, showing promising applications in various fields.
Article
Chemistry, Applied
Xin Hu, Tongsheng Huang, Lihua Chen, Weifeng Zhu, Fengjie Deng, Xiancai Li, Jianwen Tian, Meiying Liu, Xiaoyong Zhang, Yen Wei
Summary: This study presents the synthesis of fluorescent cyclomatrix polyphosphazene spheres with aggregation-induced emission (AIE) feature and biodegradable potential for controlled drug delivery. The resulting micelles exhibit high water dispersibility, desirable fluorescence performance, and high drug loading capacity. They can effectively release the encapsulated drug in physiological solution and show excellent biological imaging ability and cytotoxicity against cancer cells.
Article
Chemistry, Applied
Yanzhu Liu, Yanghui Lei, Dongyan Li, Guangkui Li, Dongping Li, Yongxiu Li
Summary: In this study, luminescent lanthanide nanoparticles were synthesized as a dual emission turn-off probe for detecting 2,6-pyridinedicarboxylic acid (DPA) in water. The nanoparticles showed good dispersion and water stability, and achieved low detection limits for DPA. They also exhibited high recoveries in various samples.
Article
Chemistry, Applied
Jung Jae Do, Jong Ryeol Kwon, Donghan Kim, Jae Woong Jung
Summary: This study presents a defect passivation approach using coumarin dye as a multi-functional passivating agent of perovskite films to boost power conversion efficiency and operating stability of PSCs. The incorporation of coumarin dye improves the film morphology, enhances carrier extraction/transport, and suppresses trap-assisted recombination in the perovskite films. The optimized device demonstrates impressive reliability and practical applicability, maintaining over 90% of its initial PCE after being exposed to continuous indoor lighting irradiation for 2000 hours.
Article
Chemistry, Applied
Gang Wang, Yu-Chang Wang, Jing Lu, Wen-Fu Yan, Juan Jin, Yuan-Peng Wang, Jia-Jia Zhang, Hui-Jie Zhang, Hao Dong, Xi-Guang Liu
Summary: A new Ni(II) compound with good solid-state fluorescence performance and stability was synthesized, and it showed outstanding detection properties for various substances in aqueous solutions. This compound has the potential to be a multifunctional sensor.
Article
Chemistry, Applied
Luyao Wei, Shenglong Shang, Yu Zheng, Jie Liu, Ping Zhu
Summary: This study developed a facile method to create high saturation and durable structural colors on cotton fabrics. The colors are regulated by adjusting the size of magnetic particles and can be conveniently printed on fabrics using photo masks on transparent films.
Article
Chemistry, Applied
Zhao Jiang, Qing Zhang, Zhaoyu Kong, Ruijie Qiao, Zichuan Liu, Linzhou Song, Senqiang Zhu, Rui Liu, Hongjun Zhu
Summary: Three heteroleptic Ir(III) complexes with different electron-donating aryl groups were synthesized and their optical properties were investigated. It was found that all three complexes exhibited aggregation-induced phosphorescence emission (AIPE) behaviors, and the relationship between the size of organic ligands and AIPE behaviors was characterized. Ir-PhCz showed the best imaging of latent fingerprints due to its green light emission and high quantum yield.
Article
Chemistry, Applied
Zhijun Ruan, Chunxia Fan, Xuanrong Wang, Dong Shao, Xiaodong Yang, Wentao He, Tao Xu, Junqi Lin, Zhengfang Tian
Summary: A novel thioketal-based probe has been designed for rapid and accurate detection of mercury (II) ions, showing different fluorescence characteristics in various states. The probe exhibits excellent selectivity and specificity, making it suitable for Hg2+ detection in water solutions.
Article
Chemistry, Applied
Jianjun Huang, Xuan Zhao, Daniel Escudero, Luc Van Meervelt, Dongbin Zheng, Yuyu Fang, Wim Dehaen
Summary: A series of BOAHY compounds were successfully synthesized and showed versatile applications as a platform for designing novel fluorescent probes, especially in selective recognition.
Article
Chemistry, Applied
Roman V. Larkovich, Victoria E. Shambalova, Savva A. Ponomarev, Alexander S. Aldoshin, Boris N. Tarasevich, Konstantin A. Lyssenko, Valentine G. Nenajdenko
Summary: An efficient synthetic protocol for the preparation of novel 1,7-difluorinated BODIPYs was elaborated. Their photophysical properties were studied and the effect of 2,6-substituents was evaluated using DFT calculations.
Article
Chemistry, Applied
Haneul Kim, Byungjin Koo
Summary: In this study, a lithium ion sensing methodology based on fluorinated naphthalene compounds using 19F NMR and UV-vis spectroscopy is reported. The binding of lithium ions to the compounds is confirmed by changes in chemical shifts and peak broadening. Additionally, the effect of different crown ether ring sizes on the binding ability is observed. This study provides a new method for lithium ion sensing using spectroscopy.
