Article
Engineering, Chemical
Chen Zhao, Yahan Ye, Xianfu Chen, Xiaowei Da, Minghui Qiu, Yiqun Fan
Summary: This study modifies a ceramic membrane by grafting aminosilane to enhance its rejection performance towards methylene blue solution, and provides guidance for treating industrial cationic dye wastewater.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Estefania Oyarce, Karina Roa, Andres Boulett, Paula Salazar-Marconi, Julio Sanchez
Summary: The capability of separating and concentrating lithium ions using polymers in the LPR process was studied, revealing the most suitable conditions and identifying PSPAK as the polymer with highest efficiency. Furthermore, it was found that the polymer can be reused in multiple cycles to achieve a certain removal efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Jana Gaalova, Marine Michel, Mahdi Bourassi, Bradley P. Ladewig, Petr Kasal, Jindrich Jindrich, Pavel Izak
Summary: Nafion117 (R) membranes modified by cationic cyclodextrin derivatives were prepared by strong ionic bonding for enantioselective separation. The CD-DEG-MIM2 membrane showed the highest enantiomeric excess. Pertraction played a crucial role in enhancing the separation of racemic mixtures, suggesting potential for continuous large-scale production of enantiopure compounds.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Shweta Chaubey, Sanjay Mehra, Anshul Yadav, Arvind Kumar, Vinod K. Shahi
Summary: In this study, antibacterial membranes with curcumin-enriched Cur-NaDBS nanoparticles were synthesized and characterized. The membranes showed improved resistance to fouling and exhibited antibacterial properties.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Physical
Qianwen Dong, Mingli Li, Mingshuang Sun, Fangyuan Si, Qiongzhi Gao, Xin Cai, Yuehua Xu, Teng Yuan, Shengsen Zhang, Feng Peng, Yueping Fang, Siyuan Yang
Summary: The study proposed a phase-controllable phosphating strategy to prepare Ni3P modified CdS@Ni3S2 heterojunction electrocatalysts, which exhibited remarkable activities in both HER and OER; DFT results suggest that P-Ni sites and P sites in CdS@Ni3S2/Ni3P serve as OER and HER active sites during water splitting; CdS@Ni3S2/Ni3P shows superior photoassisted electrocatalytic water splitting performance.
Article
Chemistry, Physical
Larissa Aparecida Toledo Costa, Liz Contino Vianna de Aguiar, Ailton de Souza Gomes, E. Fabio Jose Bento Brum
Summary: Polyvinyl alcohol (PVA) is a non-toxic, environmentally friendly polymeric electrolyte for proton transport that is cost-effective and forms flexible and resistant films. The insertion of acid groups and inorganic oxides tin modified with phenol salt (Tiron) enhances its conduction capacity. PVA membranes modified with sulfonic acids and phenol salt were synthesized and characterized. The membranes showed thermal resistance and chemical stability superior to PVA when exposed to Fenton's reagent. Impedance analysis confirmed an increase in conductivity with increased oxide modified concentration. PASF306 and PASS305 membranes exhibited the highest conductivity. The membranes were tested in a prototype fuel cell with pure hydrogen and showed potential for application.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Analytical
Michael Fadeev, Yu Ouyang, Gilad Davidson-Rozenfeld, Itamar Willner
Summary: Soft materials like hydrogels, polymers, or biomaterials when associated with electrodes reveal functions such as electrocatalytic, photoelectrocatalytic, and controlled release of loads. Three examples from the laboratory demonstrate these functions, involving stimuli-responsive nucleic acid-based hydrogels, pH-responsive nucleic acid-based hydrogels, and supramolecular matrices with native photosystem I interlinked with glucose oxidase.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Chemical
Vahid Vajihinejad, Sarang P. Gumfekar, Daniel V. Dixon, Marco Antonio Silva, Joao B. P. Soares
Summary: This study investigates the flocculation of oil sands mature fine tailings (MFT) using poly(VBTMAC) as a flocculant, showing that the polymer's hydrophobic nature and positive charges contribute to neutralizing the negative charges of MFT clays and forming larger aggregates. The results demonstrate that poly(VBTMAC) outperforms commercially available anionic polyacrylamides in terms of production ease, dewatering rate, and sediment strength, but requires higher dosages for better performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Zhijun Liu, Xi Luo, Senlin Shao, Xue Xia
Summary: In this study, a Pd-Cu modified carbon nanotube (CNT) membrane was fabricated and used for the electrocatalytic reduction of nitrate in a flow-through electrochemical reactor. The results showed that the membrane with a Pd:Cu ratio of 1:1 exhibited high nitrate removal efficiency and selectivity of nitrate reduction products at an optimal potential of -0.8 V. Nitrate removal was enhanced under acidic conditions. The mass transfer rate constant and nitrate removal rate were significantly improved by the Pd-Cu modified CNT membrane.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2023)
Article
Environmental Sciences
Humayra Begum, Md Nurnobi Islam, Sami Ben Aoun, Jamil A. Safwan, Syed Shaheen Shah, Md Abdul Aziz, Mohammad A. Hasnat
Summary: This study explores the effect of three coinage metals (Cu, Ag, and Au) on Pt electrode for the electrochemical reduction of nitrate in neutral solution. Among the three electrodes, Pt-Cu exhibits the best catalytic activity, while Pt-Au electrode shows no reactivity. Nitrate reduction at Pt-Cu electrode yields ammonia via both direct and indirect reaction pathways. The cathodic transfer coefficients and standard rate constants for nitrate reduction were calculated for Pt-Cu and Pt-Ag electrodes.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Archana Kaliyaraj Selva Kumar, Yuanyuan Lu, Richard G. Compton
Summary: The use of carbon nanotubes (CNTs) as electrocatalysts is analyzed in this paper. The limitations of using voltammetry based on CNT-modified electrodes are explained, and the role of mass transport and electrode kinetics in dictating the voltammetric responses is discussed. The paper advocates for the use of single-entity electrochemistry as a complement or potential replacement for ensemble voltammetry, emphasizing the importance of purity in CNT voltammetry.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Yu. P. Parshina, T. A. Kovylina, A. N. Konev, A. A. Belikov, P. O. Baber, A. D. Komarova, E. A. Romaeva, L. N. Bochkarev
Summary: A norbornene-substituted cationic iridium(III) complex containing 1-phenylisoquinoline cyclometalating ligands and an additional phenylimidazophenanthroline ligand was synthesized. Water-soluble polymers were obtained by ring-opening metathesis polymerization (ROMP) using this complex. The resulting polymers exhibited oxygen-dependent phosphorescence in the orange spectral region and showed high cytotoxicity against HCT116 cancer cells.
RUSSIAN JOURNAL OF GENERAL CHEMISTRY
(2022)
Article
Materials Science, Ceramics
Chao Yang, Zhihao Jin, Xianfu Chen, Jinhai Fan, Minghui Qiu, Kaiyun Fu, Yiqun Fan
Summary: In this study, pure tetragonal zirconia was successfully prepared by a modified hydrothermal method, exploring the effects of pH and glycerol content on the phase and morphology of the material. A high-performance ZrO2 ultrafiltration membrane was also prepared, showing good reproducibility and stability.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Maria Pilo, Sylwia Baluta, Anna C. Loria, Gavino Sanna, Nadia Spano
Summary: This study presents a method for immobilizing glucose oxidase using an electrogenerated conducting film and enhancing the analytical performance of glucose detection by modifying it with graphene oxide. The biosensor with graphene oxide exhibited satisfactory values of linear dynamic range, limit of detection, and sensitivity.
Article
Chemistry, Physical
Wancen Xie, Alberto Tiraferri, Xuanyu Ji, Chen Chen, Yuhua Bai, John C. Crittenden, Baicang Liu
Summary: The study utilized a green solvent and environmentally friendly reaction method to fabricate PVC UF membranes with excellent fouling resistance, achieving good membrane performance in a short grafting time, providing a new approach to reduce environmental impacts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Lambert Sicard, Frederic Lafolet, Martial Boggio-Pasqua, Christophe Bucher, Guy Royal, Saioa Cobo
Summary: The optical and redox properties of a methyl pyridinium-appended 1,2-dithienylethene photochromic derivative were extensively studied. Based on spectro-electrochemical and theoretical data, a complex multi-step photo/redox mechanism was proposed for the closed isomer. The generated compounds were found to be unstable over time due to chemical reactions associated with the redox processes, leading to the isolation and characterization of a new dithienylethene derivative incorporating a seven-membered ring.
Article
Electrochemistry
Shaymaa Al Shehimy, Denis Frath, Elise Dumont, Floris Chevallier, Christophe Bucher
Summary: CF3-substituted porphyrins have attracted increasing interest. This study reports the synthesis of a series of free base porphyrins incorporating one, two, and three CF3 substituents, including a never-before-described 5,10,15-tris(CF3) substituted porphyrin. Detailed electrochemical and spectroscopic analyses were carried out to assess the electron-withdrawing properties of CF3 substituents compared to C6F5. The study proposes an interpretation of the unusual electrochemical signature of these molecules featuring three successive one-electron reduction waves.
Review
Chemistry, Multidisciplinary
Fei Wang, Christophe Bucher, Qing He, Atanu Jana, Jonathan L. Sessler
Summary: This article summarizes the development of oligopyrrolic cages in supramolecular chemistry and sensing applications. Oligopyrrole cages with well-defined molecular geometries allow for reversible guest binding under ambient conditions, and the incorporation of pyrrole subunits within larger superstructures enables control over anion/conjugate acid binding activity. Additionally, the potential of using heterocycles other than pyrrole, such as pyridine and naphthyridine, to create self-assembled materials is explored.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Soukaina Bennaamane, Barbara Rialland, Lhoussain Khrouz, Marie Fustier-Boutignon, Christophe Bucher, Eric Clot, Nicolas Mezailles
Summary: This article introduces a new method that uses boron-centered radicals to activate N-2 and convert it into NH3 under mild conditions. The mechanism and effectiveness of this method are demonstrated through experiments and calculations.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Shaymaa Al Shehimy, Orsola Baydoun, Sandrine Denis-Quanquin, Jean-Christophe Mulatier, Lhoussain Khrouz, Denis Frath, Elise Dumont, Muralee Murugesu, Floris Chevallier, Christophe Bucher
Summary: We report the synthesis and magnetic properties of a Ni(II)-porphyrin tethered to an imidazole ligand through a flexible electron-responsive mechanical hinge. The reversible folding motion of the hinge, triggered by electrical stimulation, forces the coordination of the imidazole ligand onto the Ni(II) center, resulting in a spin state change. This spin state switching, driven by pi-dimerization between viologen cation radicals, is supported by NMR, (spectro)electrochemical, and magnetic data as well as quantum calculations.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Jeremy Salaam, Thibault Fogeron, Guillaume Pilet, Radu Bolbos, Christophe Bucher, Lhoussain Khrouz, Jens Hasserodt
Summary: Two mononuclear ferric complexes show a 27- and 71-fold increase in their ability to accelerate the relaxation rate of water-hydrogen nuclei in response to a pH change. This performance is unprecedented and holds promise for addressing sensitivity issues in Molecular MRI development. The complexes also exhibit complete reversibility and fatigue-less nature. The macrocyclic nature of the hexa-dentate ligand and the presence of a single pendant arm with a five-membered lactam or carbamate contribute to this exceptional performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Amlia Godard, Laura Abad Galan, Jean Rouillon, Shaymaa Al Shehimy, Wassima Tajani, Charlotte Cave, Raluca Malacea-Kabbara, Yoann Rousselin, Pierre Le Gendre, Arnaud Fihey, Mohamed Bendellaa, Benoit Busser, Lucie Sancey, Boris Le Guennic, Christophe Bucher, Olivier Maury, Christine Goze, Ewen Bodio
Summary: Aza-boron-dipyrromethenes (Aza-BODIPYs) are a class of fluorophores with azadipyrromethene (aza-DIPY) ligand rigidified by a boron atom. Complexes of group 13 metals (aluminum and gallium) were synthesized and their properties were investigated. AzaGaDIPY and azaAlDIPY exhibited significant red-shifted fluorescence compared to aza-BODIPY, making them promising for optical medical imaging.
INORGANIC CHEMISTRY
(2023)
Review
Polymer Science
Hui-Qing Peng, Wenping Zhu, Wu-Jie Guo, Qingyun Li, Shixiang Ma, Christophe Bucher, Bin Liu, Xiaofan Ji, Feihe Huang, Jonathan L. Sessler
Summary: Supramolecular polymers are self-assembled structures formed through noncovalent interactions, exhibiting reversibility, responsiveness, and stability. They have diverse applications in various fields. This review focuses on the determinants and driving forces of supramolecular polymer construction, highlighting the influence of different noncovalent interactions on their structure and function. Understanding these connections contributes to further advancements in this field.
PROGRESS IN POLYMER SCIENCE
(2023)
Article
Electrochemistry
Jean-Francois Longevial, Iryna Knysh, Shaymaa Al Shehimy, Lhoussain Khrouz, Aramugam Pandurangan, Simon Pascal, Gabriel Canard, Christophe Bucher, Denis Jacquemin, Olivier Siri
Summary: Researchers have synthesized and characterized the soluble 6,13-dipivaloyl-5,14-dihydro-5,7,12,14-tetraazapentacene and its aromatic counterpart. Using complementary chemical, (spectro)-electrochemical, theoretical, and spectroscopic techniques, all the intermediates generated during the electrochemical processes of these compounds were fully characterized. The results demonstrate the ambipolar redox behavior of 6,13-dipivaloyl-5,14-dihydro-5,7,12,14-tetraazapentacene, leading to drastic color changes through proton-coupled electron transfer in a totally reversible fashion.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Zakaria Ziani, Saioa Cobo, Frederique Loiseau, Damien Jouvenot, Elise Lognon, Martial Boggio-Pasqua, Guy Royal
Summary: The research on molecular systems and devices modulated by light as an external stimulus is of great importance in materials and life sciences. The use of photochromic compounds that can reversibly switch upon light irradiation is attractive, especially for biological purposes. A benzo[e]-fused dimethyldihydropyrene compound with a methyl-pyridinium electroacceptor group has been designed to meet the requirements of operating in aqueous media and being triggered by visible light, showing high quantum yields in water. The efficient photoswitching behavior of this compound has been rationalized by theoretical calculations.
Article
Materials Science, Multidisciplinary
Vivien Andrieux, Thomas Gibaud, Julien Bauland, Thibaut Divoux, Sebastien Manneville, Stephan Guy, Amina Bensalah-Ledoux, Laure Guy, Floris Chevallier, Denis Frath, Christophe Bucher
Summary: Redox-active conductive supramolecular gels involving highly ordered chiral assemblies of small organic molecules have been synthesized and characterized in this study. The gelation process and properties of the gels were thoroughly investigated, and it was found that the optical, rheological, and electrical properties of the gels can be tuned by adding ionic additives. The self-assembly process formed chiral hollow core-shell cylinders with specific dimensions.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Medicinal
Leticia M. Lazinski, Guy Royal, Maxime Robin, Marc Maresca, Romain Haudecoeur
Summary: This review summarizes the recent advances in the medicinal potential of hemiindigoids, focusing on molecular design, structure-activity relationship, ligand-target interactions, and mechanistic explanations. Additionally, the potential applications of their strong fluorescence and photoswitch properties in medicinal chemistry are discussed.
JOURNAL OF MEDICINAL CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Gleb Morozkov, Anton S. Abel, Mikhail A. Filatov, Sergei E. Nefedov, Vitaly A. Roznyatovsky, Andrey Cheprakov, Alexander Yu Mitrofanov, Ilia S. Ziankou, Alexei D. Averin, Irina P. Beletskaya, Julien Michalak, Christophe Bucher, Laurent Bonneviot, Alla Bessmertnykh-Lemeune
Summary: Ru(II) complexes play a central role in photocatalytic organic reactions. This study successfully synthesized a series of structurally modified Ru(II) complexes and found their potential in enhancing photocatalytic efficiency and adapting to different reaction types.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Xinpeng Shi, Qiang Tian, Mark Julian Henderson, Na Li, Jianqiao Zhang, Xuezhi Dai, Guy Royal, Minhao Yan, Laszlo Almasy
Summary: A new type of uranium pseudo-colloid was prepared by mixing PS-b-PAA micelle dispersions with UC to simulate the structure and transport of colloidal fulvic acids with uranium. The modelled data indicated the complexation of UC with PAA segments, and the hydrodynamic size of the micelles decreased with increasing UC concentration. Column experiments showed that micelle-borne uranium could easily diffuse through quartz sand.
ENVIRONMENTAL SCIENCE-NANO
(2022)
Article
Chemistry, Inorganic & Nuclear
Nancy AlHaddad, Evan Lelong, Jong-Min Suh, Marie Cordier, Mi Hee Lim, Guy Royal, Carlos Platas-Iglesias, Helene Bernard, Raphael Tripier
Summary: This study investigates the properties of Cu(II) and Zn(II) complexes of four cyclams and cross-bridged cyclams N-functionalized by a hydroxyethyl arm. The results show that N-functionalization with a hydroxyethyl group stabilizes the complexes kinetically and electrochemically, while N-methylation causes distortion of the coordination geometry and decreases the kinetic inertness of the complexes.
DALTON TRANSACTIONS
(2022)
