Article Chemistry, Multidisciplinary
Visible-Light-Activated Type II Heterojunction in Cu3(hexahydroxytriphenylene)2/Fe2O3 Hybrids for Reversible NO2 Sensing: Critical Role of π-π* Transition
Young-Moo Jo, Kyeorei Lim, Ji Won Yoon, Yong Kun Jo, Young Kook Moon, Ho Won Jang, Jong-Heun Lee
Summary: The hybrid of Cu-3(HHTP)(2) nanoflakes and Fe2O3 nanoparticles shows highly sensitive, selective, and reversible detection of NO2, providing a new strategy for designing high-performance MOF-based gas sensors.
ACS CENTRAL SCIENCE (2021)
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Article Engineering, Environmental
FeS2/MoS2@RGO hybrid materials derived from polyoxomolybdate-based metal-organic frameworks as high-performance electrocatalyst for ammonia synthesis under ambient conditions
Zemin Feng, Gang Li, Xinming Wang, Carlos J. Gomez-Garcia, Jianjiao Xin, Huiyuan Ma, Haijun Pang, Keqing Gao
Summary: In this work, a one-pot hydrothermal synthesis process was used to successfully synthesize nanostructured bimetallic sulfides with the assistance of an iron-based metal-organic framework and a molybdenum-based polyoxometalate. The synthesized FeS2/MoS2@RGO catalyst showed excellent electrocatalytic activity and stability towards nitrogen reduction reaction in both acidic and alkaline solutions, with high Faradaic efficiency and NH3 yield rate.
CHEMICAL ENGINEERING JOURNAL (2022)
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Article Chemistry, Multidisciplinary
Mechanochemical Post-Synthesis of Metal-Organic Framework-Based Pre-Electrocatalysts with Surface Fe-O-Ni/Co Bonding for Highly Efficient Oxygen Evolution
Wang Zhang, Menghao Niu, Jing Yu, Shiqi Li, Yu Wang, Kun Zhou
Summary: A highly efficient MOF-based pre-electrocatalyst was prepared through all-solid-phase mechanochemistry, which exhibited a very low overpotential and a small Tafel slope, indicating superior OER activity. This was mainly attributed to the formation of surface Fe-O-Ni/Co bonding.
ADVANCED FUNCTIONAL MATERIALS (2023)
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Article Chemistry, Inorganic & Nuclear
Route to the Structure-Controlled Synthesis of Fe Nanobelts and Their Oxygen Evolution Reaction Application
Xiaoli Zhang, Xu Han, Fengyuan Zhu, Chengyan Zhou, Xueqin Cao, Jianping Lang, Hongwei Gu
Summary: In this study, Fe-MOF nanobelts were successfully synthesized using a solvothermal method with Fe2+ as the metal source. Fe2+ played a crucial role in achieving the structural changes from belt-shaped to cubelike.
INORGANIC CHEMISTRY (2022)
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Review Chemistry, Multidisciplinary
The Role of Defects in Metal-Organic Frameworks for Nitrogen Reduction Reaction: When Defects Switch to Features
Islam E. Khalil, Cong Xue, Wenjing Liu, Xiaohan Li, Yu Shen, Sheng Li, Weina Zhang, Fengwei Huo
Summary: The focus of research is on designing efficient electrocatalysts through defect engineering, with metal-organic frameworks (MOFs) and their derivatives gaining interest for providing more active sites to enhance electrochemical reactions. The paper summarizes in situ characterization techniques for defects, common methods for creating defects in MOFs, recent advances in MOF-based electrocatalysts for NRR, and proposes challenges and outlook for defects in MOFs for NRR.
ADVANCED FUNCTIONAL MATERIALS (2021)
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Review Chemistry, Inorganic & Nuclear
Recent advances in metal/covalent organic frameworks based materials: Their synthesis, structure design and potential applications for hydrogen production
Wei -Ting Chung, Islam M. A. Mekhemer, Mohamed Gamal Mohamed, Ahmed M. Elewa, Ahmed F. M. EL-Mahdy, Ho-Hsiu Chou, Shiao-Wei Kuo, Kevin C. -W. Wu
Summary: In recent years, both MOFs and COFs, known for their specific surface area, tunable porosity, and structural versatility, have been widely used in catalysis. Among these applications, catalytic hydrogen production processes have received significant attention as an alternative energy source to fossil fuels and a solution to global warming. This review provides an overview of the recent advancements and applications of MOFs/COFs-based catalysts for hydrogen production, including steam reforming, dry reforming, electrocatalytic water splitting, photocatalytic water splitting, and photo-electrocatalytic water splitting. The design of MOF/COF-based catalysts, as well as the opportunities and challenges in their use for hydrogen production, are also discussed.
COORDINATION CHEMISTRY REVIEWS (2023)
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Article Chemistry, Multidisciplinary
Using genetic algorithms to systematically improve the synthesis conditions of Al-PMOF
Nency P. Domingues, Seyed Mohamad Moosavi, Leopold Talirz, Kevin Maik Jablonka, Christopher P. Ireland, Fatmah Mish Ebrahim, Berend Smit
Summary: In this study, a joint machine learning and experimental approach is used to optimize the synthesis conditions of Al-PMOF, resulting in improved yield and crystallinity. The most important experimental variables that determine the outcome are identified through analysis of failed and partially successful experiments.
COMMUNICATIONS CHEMISTRY (2022)
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Article Materials Science, Multidisciplinary
Microfluidics-assisted, time-effective and continuous synthesis of bimetallic ZIF-8/67 under different synthesis conditions
Svapnil Kevat, Bhaumik Sutariya, V. N. Lad
Summary: Bimetallic MOFs, such as bimetallic ZIF-8/67, possess advantageous properties for various applications including energy storage and conversion, catalysis, gas separation, and sensing. The desired morphology with precise control over crystal size is crucial for specific applications. Microfluidics-incorporated continuous synthesis of bimetallic ZIF-8/67 offers significant nanocrystallinity, porosity, and surface area, and proves to be a time-efficient approach compared to conventional techniques.
JOURNAL OF MATERIALS SCIENCE (2023)
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Article Chemistry, Multidisciplinary
Exploiting Reaction-Diffusion Conditions to Trigger Pathway Complexity in the Growth of a MOF
Nestor Calvo Galve, Afshin Abrishamkar, Alessandro Sorrenti, Lorenzo Di Rienzo, Mauro Satta, Marco D'Abramo, Eugenio Coronado, Andrew J. de Mello, Guillermo Minguez Espallargas, Josep Puigmarti-Luis
Summary: By achieving diffusion-controlled mixing of reagents at the very early stages of crystallization process using continuous-flow microfluidic devices, two distinct nucleation-growth pathways of a spin-crossover MOF towards its thermodynamic product were observed. Additionally, full-atom molecular dynamics simulations confirmed the occurrence of these pathways during crystal growth. In contrast, crystallization by particle attachment was observed under turbulent mixing conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)
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Review Chemistry, Physical
The Advanced Synthesis of MOFs-Based Materials in Photocatalytic HER in Recent Three Years
Hao Zhang, Cha Li, Yang Li, Jiandong Pang, Xianhe Bu
Summary: Since the introduction of metal-organic frameworks (MOFs), their potential in various applications, such as photocatalysis, has attracted significant attention. This review summarizes the recent advancements in the synthesis of MOFs-based materials for photocatalytic water decomposition to produce hydrogen. The review discusses various synthesis strategies and the challenges faced in this field, aiming to deepen readers' understanding and promote further development in this area.
CATALYSTS (2022)
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Article Chemistry, Multidisciplinary
Continuous flow synthesis of PCN-222 (MOF-545) with controlled size and morphology: a sustainable approach for efficient production
Alessio Zuliani, M. Carmen Castillejos, Noureddine Khiar
Summary: Zirconium-based MOF PCN-222 has attracted attention for its regular porosity, tuneable pore size, versatile structure, and exceptional stability. However, traditional batch synthesis methods face limitations in productivity, scalability, and control over size and morphology. This study presents a paradigm shift to continuous flow synthesis, which enables efficient production of high-quality PCN-222 with improved resource efficiency, scalability, and safety. The integration of ultrasound-assisted technique and greener solvents further enhances the sustainability and potential applications of PCN-222.
GREEN CHEMISTRY (2023)
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Article Chemistry, Physical
Radical PolyMOFs: A Role for Ligand Dispersity in Enabling Crystallinity
Matthew A. Pearson, Mircea Dinca, Jeremiah A. Johnson
Summary: The study focused on synthesizing polyMOF ligands featuring MOF-forming benzenedicarboxylic acid linkers using common radical polymerization techniques: reversible addition fragmentation chain transfer (RAFT) polymerization and free radical polymerization (FRP). It was found that high-dispersity ligands prepared through FRP formed crystalline polyMOFs, while low-dispersity ligands prepared through RAFT required additional H(2)bdc to yield crystalline materials similar to MOF-5 and UiO-66. This work suggests that ligand dispersity is a key factor for polyMOF synthesis and presents new possibilities for developing polymer-MOF hybrids based on radical polymerization.
CHEMISTRY OF MATERIALS (2021)
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Article Chemistry, Inorganic & Nuclear
Stepwise Synthesis of Cl-Decorated Trinuclear-Cu Cluster-Based Frameworks for C2H2/C2H4 and C2H2/CO2 Separation
Jing Wu, Yunli Wang, Jin-Peng Xue, Dapeng Wu, Jia Li
Summary: A novel Cl-decorated trinuclear-Cu cluster-based MOF (NbU-7-Cl) was synthesized using a stepwise synthesis strategy, allowing for the design and modification of multifunctional materials. The insertion of chloride ions alters the symmetry and adsorption energy, resulting in improved adsorption capacity and separation performance.
INORGANIC CHEMISTRY (2023)
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Article Materials Science, Multidisciplinary
Hot Press Synthesis of MOF/Textile Composites for Nerve Agent Detoxification
Deborah Turetsky, Diego M. Alzate-Sanchez, Megan C. Wasson, Anna Yang, Hyunho Noh, Ahmet Atilgan, Timur Islamoglu, Omar K. Farha, William R. Dichtel
Summary: This study synthesizes UiO-66-NH2 on cotton fabrics via a hot pressing method and improves the quality of MOFs by preactivating the fabric and modifying the synthesis method. The resulting composites demonstrate high MOF loadings and hom*ogeneous coverage, showing efficient decontamination of nerve agents.
ACS MATERIALS LETTERS (2022)
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Article Materials Science, Multidisciplinary
In Situ Synthesis of a Mesoporous MIL-100(Fe) Bacteria Exoskeleton
Anastasia Permyakova, Alshaba Kakar, Jonathan Bachir, Effrosyni Gkaniatsou, Bernard Haye, Nicolas Menguy, Farid Nouar, Christian Serre, Nathalie Steunou, Thibaud Coradin, Francisco M. Fernandes, Clemence Sicard
Summary: The mesoporous iron polycarboxylate MIL-100(Fe) was synthesized with the presence of Pseudomonas putida bacteria. The synthesis was done under green conditions, using pure aqueous media at 30 degrees C to ensure the integrity of the cell membrane. The resulting biohybrid showed a unique microstructure, with an exoskeleton encapsulating individual bacteria cell, suggesting strong interactions between the exopolysaccharides network and MOF precursors.
ACS MATERIALS LETTERS (2023)
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Article Biophysics
Attomolar detection of hepatitis C virus core protein powered by molecular antenna-like effect in a graphene field-effect aptasensor
Irene Palacio, Miguel Moreno, Almudena Nanez, Agnes Purwidyantri, Telma Domingues, Patricia D. Cabral, Jerome Borme, Marzia Marciello, Jesus Ignacio Mendieta-Moreno, Beatriz Torres-Vazquez, Jose Ignacio Martinez, Maria Francisca Lopez, Mar Garcia-Hernandez, Luis Vazquez, Pavel Jelinek, Pedro Alpuim, Carlos Briones, Jose Angel Martin-Gago
Summary: Biosensors based on covalently functionalized graphene have been developed for ultra-sensitive aptamer-based detection of hepatitis C virus core protein. The induced polarization at the graphene interface causes a net shift of the Dirac cone, enhancing the sensitivity for attomolar detection. This unexpected effect opens up possibilities for ultrasensitive and real-time diagnostics of various diseases using graphene-based functionalized platforms.
BIOSENSORS & BIOELECTRONICS (2023)
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Article Chemistry, Physical
Tautomerization of single asymmetric oxahemiporphycene molecules on Cu(111)
Simon Jaekel, Emile Durant, Monika Schied, Mats Persson, Jakub Ostapko, Michal Kijak, Jacek Waluk, Leonhard Grill
Summary: In this study, 22-oxahemiporphycene molecules were investigated using scanning tunneling microscopy and density functional theory calculations. Unlike other molecular switches, these molecules can exist in three different tautomers due to their asymmetry and three inequivalent binding positions of a hydrogen atom. The different tautomers can be identified from the appearance on the surface, and tunneling electrons can be used to tautomerize single molecules in a controllable way.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2023)
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Article Chemistry, Multidisciplinary
Evaluation of the Oxygen Reduction Reaction Electrocatalytic Activity of Postsynthetically Modified Covalent Organic Frameworks
Marcos Martinez-Fernandez, Emiliano Martinez-Perinan, Jose I. Martinez, Marta Gordo-Lozano, Felix Zamora, Jose L. Segura, Encarnacion Lorenzo
Summary: We developed a simple method to compare the electrocatalytic performance of metal-free and nonpyrolyzed materials by postsynthetic modification of covalent organic frameworks (COFs) through click-chemistry. This method allows for the evaluation of different active centers on materials with the same morphology and prevents active site agglomeration. Theoretical analysis using density functional theory and thermodynamic Gibbs free energy suggests a rationalization of the ORR mechanism in these materials.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2023)
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Article Chemistry, Physical
Two-Dimensional Self-Assembly Driven by Intermolecular Hydrogen Bonding in Benzodi-7-azaindole Molecules on Au(111)
Jose Abad, Jose I. Martinez, Paula Gomez, Miriam Mas-Montoya, Luis Rodriguez, Albano Cossaro, Alberto Verdini, Luca Floreano, Jose A. Martin-Gago, David Curiel, Javier Mendez
Summary: The control of molecular structures at the nanoscale is crucial for material and application development. The adsorption of a polyheteroaromatic molecule on Au(111) has been studied, revealing the formation of highly organized linear structures due to intermolecular hydrogen bonding. Different arrangements, including extended brick-wall and herringbone packing, were observed. Comprehensive experimental and theoretical characterizations were conducted to study the 2D hydrogen-bonded domains and the on-surface thermal stability of the physisorbed material.
JOURNAL OF PHYSICAL CHEMISTRY C (2023)
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Article Chemistry, Physical
Directing and Understanding the Translation of a Single Molecule Dipole
Grant J. Simpson, Victor Garcia-Lopez, A. Daniel Boese, James M. Tour, Leonhard Grill
Summary: In this study, the researchers demonstrate how they can use the tip of a scanning tunneling microscope (STM) to control the translation direction of a single polar molecule. Through the interaction between the dipole moment of the molecule and the electric field of the STM junction, both translations and rotations of the molecule are observed. By considering the relative position of the tip to the dipole moment axis, the order of rotation and translation can be deduced. While the molecule-tip interaction is dominant, computational results suggest that translation is influenced by the surface direction.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2023)
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Article Physics, Condensed Matter
Epitaxial growth and characterization of SnSe phases on Au(111)
Federico Frezza, Ana Sanchez-Grande, Martin Ondracek, Martin Vondracek, Qifan Chen, Oleksandr Stetsovych, Victor Villalobos-Vilda, Ezequiel Tosi, Francisco Javier Palomares, Maria Francisca Lopez, Carlos Sanchez-Sanchez, Karl-Heinz Ernst, Jose Angel Martin-Gago, Jan Honolka, Pavel Jelinek
Summary: We investigate the atomic structure and electronic properties of epitaxial SnSe structures grown on a metallic Au(111) substrate. We observe a coverage-dependent transition from metallic beta-SnSe to semiconducting alpha-SnSe phases. Comprehensive characterization techniques, combined with density functional theory, allow us to study the geometric and electronic properties of both phases.
JOURNAL OF PHYSICS-CONDENSED MATTER (2023)
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Article Nanoscience & Nanotechnology
Acrylates Polymerization on Covalent Plasma-Assisted Functionalized Graphene: A Route to Synthesize Hybrid Functional Materials
Roberto Munoz, Laia Leon-Boigues, Elena Lopez-Elvira, Carmen Munuera, Luis Vazquez, Federico Mompean, Jose Angel Martin-Gago, Irene Palacio, Mar Garcia-Hernandez
Summary: The modification of graphene surface with polymers allows for expanding its applications as a hybrid material. However, the chemical inertness of graphene poses a challenge for covalent functionalization. Researchers have developed a clean and scalable method to enhance the graphene chemical activity and synthesized a large-scale graphene-polymer hybrid material.
ACS APPLIED MATERIALS & INTERFACES (2023)
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Article Chemistry, Multidisciplinary
A Rational Design of Isoindigo-Based Conjugated Microporous n-Type Semiconductors for High Electron Mobility and Conductivity
Kayaramkodath Chandran Ranjeesh, Ayman Rezk, Jose Ignacio Martinez, Safa Gaber, Areej Merhi, Tina Skorjanc, Matjaz Finsgar, Gisha Elizabeth Luckachan, Ali Trabolsi, Bilal R. Kaafarani, Ammar Nayfeh, Dinesh Shetty
Summary: The slower development of n-type organic semiconductors compared to p-type semiconductors is due to the lack of stable and processable electron-deficient building blocks. However, high-performance n-type polymer semiconductors are essential for various organic optoelectronic devices. In this study, conjugated microporous polymers (CMPs) with isoindigo acceptor units linked to benzene or pyrene donor units were found to exhibit n-type semiconducting behavior. A plasma-assisted fabrication technique was developed to deposit uniform thin films of CMPs for accurate Hall measurements. The fully conjugated 2D networks in the films showed high electron mobility and conductivity.
ADVANCED SCIENCE (2023)
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Article Chemistry, Multidisciplinary
In situ observation of the on-surface thermal dehydrogenation of n-octane on Pt(111)
Daniel Arribas, Victor Villalobos-Vilda, Ezequiel Tosi, Paolo Lacovig, Alessandro Baraldi, Luca Bignardi, Silvano Lizzit, Jose Ignacio Martinez, Pedro Luis de Andres, Alejandro Gutierrez, Jose Angel Martin-Gago, Pablo Merino
Summary: In this study, the thermal dehydrogenation of n-octane on Pt(111) was characterized using synchrotron-radiation X-ray photoelectron spectroscopy, temperature-programmed desorption, scanning tunneling microscopy, and ab initio calculations. The results showed two different dehydrogenation stages at low activation temperatures. At 330 K, n-octane underwent a regioselective single C-H bond cleavage at one methyl end. At 600 K, chemisorbed molecules underwent a double dehydrogenation, forming double bonds in their carbon skeletons. Diffusion of the dehydrogenated species resulted in the formation of carbon molecular clusters, which was the first step towards poisoning of the catalyst. These findings reveal the chemical mechanisms of alkane dehydrogenation on platinum surfaces at the atomic scale, providing insights for the design of more efficient dehydrogenation catalysts.
NANOSCALE (2023)
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Article Chemistry, Multidisciplinary
Lanthanide metal-organic network featuring strong perpendicular magnetic anisotropy
Sofia O. Parreiras, Daniel Moreno, Shanmugasibi K. Mathialagan, Beatriz Muniz-Cano, Cristina Martin-Fuentes, Maria Tenorio, Lenka Cerna, Jose I. Urgel, Koen Lauwaet, Manuel Valvidares, Miguel A. Valbuena, Jose M. Gallego, Jose I. Martinez, Pierluigi Gargiani, Rodolfo Miranda, Julio Camarero, David Ecija
Summary: The coordination of lanthanides atoms in two-dimensional surface-confined metal-organic networks is a promising path to achieve an ordered array of single atom magnets. Here we introduce an Er-directed two-dimensional metallosupramolecular network on Cu(111) featuring strong out-of-plane magnetic anisotropy. Our results will contribute to pave avenues for the use of lanthanides in potential applications in nanomagnetism and spintronics.
NANOSCALE (2023)
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Article Nanoscience & Nanotechnology
Terahertz nanospectroscopy of plasmon polaritons for the evaluation of doping in quantum devices
Xiao Guo, Xin He, Zachary Degnan, Chun-Ching Chiu, Bogdan C. Donose, Karl Bertling, Arkady Fedorov, Aleksandar D. Rakic, Peter Jacobson
Summary: This study demonstrates the use of nanoscale THz plasmon polaritons as an indicator of surface quality in prototypical quantum devices properties. By utilizing THz near-field hyperspectral measurements, polaritonic features in doped silicon near a metal-semiconductor interface were observed. A multilayer extraction procedure was applied to quantitatively probe the doped surface layer and determine its thickness and complex permittivity. The results matched the dielectric conditions necessary to support the THz surface plasmon polariton. Additionally, it was shown that etching of this doped layer leads to an increase in the quality factor of superconducting resonators as determined by cryogenic measurements.
NANOPHOTONICS (2023)
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Article Multidisciplinary Sciences
Electrochemical sensor based on the synergy between Cucurbit[8]uril and 2D-MoS2 for enhanced melatonin quantification
Rut Martinez-Moro, Maria del Pozo, Luis Vazquez, Jose A. Martin-Gago, Maria Dolores Petit-Dominguez, Elena Casero, Carmen Quintana
Summary: We have developed an electrochemical sensor for melatonin determination using MoS2 nanosheets and cucurbit[8]uril. After optimization, the sensor showed a low detection limit and high recovery.
SCIENTIFIC REPORTS (2023)
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Review Chemistry, Multidisciplinary
Trap suppression in ordered organic photovoltaic heterojunctions
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS (2024)
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Review Chemistry, Multidisciplinary
Controversial mechanism of simultaneous photocatalysis and Fenton-based processes: additional effect or synergy?
Olivier Monfort, Arsh*tha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS (2024)
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Article Chemistry, Multidisciplinary
Polymerization of monomer aggregates for tailoring and patterning water wettability
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS (2024)
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Article Chemistry, Multidisciplinary
Pd/Brønsted acid catalysed intramolecular N-allylation of indoles and pyrroles with alkynes for the synthesis of N-fused heterocycles
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS (2024)
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Article Chemistry, Multidisciplinary
Rh(III)-catalyzed selective mono- and dual-functionalization/cyclization of 1-aryl-5-aminopyrazoles with iodonium ylides
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS (2024)
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Article Chemistry, Multidisciplinary
Modified minimal-size fragments of heparan sulfate as inhibitors of endosulfatase-2 (Sulf-2)
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS (2024)
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Article Chemistry, Multidisciplinary
Reductive cyclodimerization of chalcones: exploring the self-adaptability of galvanostatic electrosynthesis
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS (2024)
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Article Chemistry, Multidisciplinary
Rh(III)-catalyzed oxidative [4+2] annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS (2024)
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Article Chemistry, Multidisciplinary
PbTeB4O9: a lead tellurium borate with unprecedented fundamental building block [B4O10] and large birefringence
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS (2024)
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Article Chemistry, Multidisciplinary
Wafer-scale synthesis of two-dimensional ultrathin films
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS (2024)
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Article Chemistry, Multidisciplinary
Precise design of copolymer-conjugated nanocatalysts for active electron transfer
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS (2024)
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