Article
Chemistry, Physical
Wei Li, Jinlei Wei, Baoan Bian, Bin Liao, Guoliang Wang
Summary: The electronic transport properties of in-plane graphene/MoS2/graphene heterojunctions were studied, showing that different covalent bond connections result in different electron distributions, with the C-S structure exhibiting superior electron transfer properties. Effective doping methods were found to reduce Schottky-barrier height and contact resistance, leading to rectification and linear characteristics in current-voltage curves under bias, in agreement with experimental reports and providing insights for high-performance device design.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Giuseppe Valerio Bianco, Alberto Sacchetti, Marco Grande, Antonella D'Orazio, Pio Capezzuto, Giovanni Bruno
Summary: Research has explored a graphene doping method that combines covalent and non-covalent doping to increase carrier charge density without significantly affecting mobility, providing graphene materials that meet technical requirements for several industrial applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Alicia Naranjo, Natalia Martin Sabanes, Manuel Vazquez Sulleiro, Emilio M. Perez
Summary: This study demonstrates that microemulsions can serve as a straightforward, cost-effective, and scalable template for covalently patterning graphene.
CHEMICAL COMMUNICATIONS
(2022)
Review
Chemistry, Multidisciplinary
Cecilia Wetzl, Alessandro Silvestri, Marina Garrido, Hui-Lei Hou, Alejandro Criado, Maurizio Prato
Summary: This article reviews the latest advances in the covalent modification of supported graphene on substrates and focuses on analyzing different chemical modification methods, especially radical reactions. The study also reviews the recent achievements in reactivity control, tailoring electronic properties, and introducing active functionalities, and extends the analysis to other emerging 2D materials supported on surfaces.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Multidisciplinary
Minju Park, Namhee Kim, Jiyoung Lee, Minsu Gu, Byeong-Su Kim
Summary: Although graphene derivatives like graphene oxide have advantages in synthesis and mass production, their properties degrade compared to pristine graphene. Covalent functionalization can enhance their electrical and physical properties for improved performance in applications.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Demetrios D. Chronopoulos, Christina Stangel, Magdalena Scheibe, Klara Cepe, Nikos Tagmatarchis, Michal Otyepka
Summary: A new material was synthesized by combining fullerene and graphene, which are non-metal covalent hybrids. The material showed excellent electrocatalytic performance and durability for the hydrogen evolution reaction, attributed to intrahybrid charge-transfer phenomena.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Yuanzhi Xia, Li Sun, Samuel Eyley, Brent Daelemans, Wim Thielemans, Johannes Seibel, Steven De Feyter
Summary: A new diazonium-based grafting ink is presented for efficient functionalization of graphene, with controlled density and ease of operation. By combining solvation and n-doping effects of DMSO, high levels of functionalization are achieved, allowing for reversible functionalization of CFG.
Article
Chemistry, Multidisciplinary
Li Zhang, Jiyao Yan, Dilgam Ahmadli, Zikuan Wang, Tobias Ritter
Summary: Direct C-H fluorination is an efficient strategy to construct aromatic C-F bonds, but the presence of other functional groups and the high energy barrier of C-F bond formation make the transformation challenging. In this study, a new concept for C-H nucleophilic fluorination without the formation of azaarene Meisenheimer intermediates was reported, achieving successful nucleophilic oxidative fluorination of quinolines through an asynchronous concerted F--e(-)-H+ transfer.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Carlos Sainz-Urruela, Soledad Vera-Lopez, Maria Paz San Andres, Ana M. Diez-Pascual
Summary: Graphene oxide (GO) has attracted significant interest in material science, biomedicine, and biotechnology due to its exceptional physical properties and surface functionalization capacity. In this study, a simple and environmentally friendly method was developed to prepare surface-functionalized GO nanosheets using tannic acid (TA) as a biological macro-molecule. The covalent grafting of TA improved the hydrophobicity and dispersion of GO in organic solvents, while also acting as a crosslinker to enhance thermal stability and antibacterial properties. This research emphasizes the potential of TA for the exfoliation and functionalization of GO, as well as its applications in biomedicine and the development of green nanocomposites.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Review
Chemistry, Multidisciplinary
Boyi Situ, Zhe Zhang, Liang Zhao, Yusong Tu
Summary: This minireview presents a discussion on the realization of long-range migration of chemical compositions on GO-based large-area dynamic covalent interfaces (LDCIs) through the spatially connected and consecutive occurrence of DCB-based reversible covalent reactions. The effective strategies for achieving LDCIs and their potential applications in water dissociation and humidity sensing are summarized. Moreover, potential strategies for realizing LDCIs on other 2D carbon-based materials are also discussed.
Article
Physics, Applied
G. Thriveni, Kaustab Ghosh
Summary: The study demonstrates that the presence of a chemical moiety at one edge of the zigzag graphene nanoribbon structure opens a bandgap, increasing sensitivity for detection, while double edge functionalization decreases sensitivity. Additionally, both single and double edge atomic substitution alters current conduction, affecting the sensitivity of graphene-based sensors.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Biochemistry & Molecular Biology
Sandra Zarska, Rafal Szukiewicz, Sergiu Coseri, Volodymyr Pavlyuk, Dorota Krasowska, Wojciech Ciesielski
Summary: This paper presents new selenium derivatives obtained by modifying the surface of carbon nanotubes. The synthesis was carried out in mild conditions, and the obtained products were characterized using various methods. The selenium derivatives of carbon nanotubes exhibited high selenium and phosphorus contents, reaching 14% and 4.2% respectively.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Sofia Georgitsopoulou, Nicole Dora Stola, Aristides Bakandritsos, Vasilios Georgakilas
Summary: By tuning the reaction conditions, selective and densely functionalized graphene oxide can be achieved, which enhances interactions with target molecules and can be used in various applications, such as preparing catalysts with high content of active sites through coordinating metal nanoparticles or atoms.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Rizwan Khan, Keita Miyagawa, Alberto Bianco, Yuta Nishina
Summary: The covalent double functionalization of graphene oxide is an effective method to tune the properties of graphene-like materials, allowing the design of a multifunctional GO platform for applications in fuel cells as an electrolyte membrane and in supercapacitors as an electrode material.
APPLIED MATERIALS TODAY
(2021)
Article
Nanoscience & Nanotechnology
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)
Review
Chemistry, Multidisciplinary
Ben Wang, Stephan Handschuh-Wang, Jie Shen, Xuechang Zhou, Zhiguang Guo, Weimin Liu, Martin Pumera, Li Zhang
Summary: Small-scale robots (SSRs) have emerged as promising and versatile tools in various applications, thanks to their ability to perform tasks at small length scales. The viscous and surface forces, such as adhesive forces and surface tension, have become dominant as robots are miniaturized, significantly impacting motion efficiency. Surface engineering with hydrophilic and hydrophobic modifications provides a new pathway to overcome motion resistance and enhance the ability of SSRs to target and regulate robots for various tasks.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Fengtong Ji, Yilin Wu, Martin Pumera, Li Zhang
Summary: Analyzing and designing collective behaviors in microorganisms is crucial for developing and advancing microswarm towards practical or clinical applications.
ADVANCED MATERIALS
(2023)
Article
Engineering, Environmental
Jayraj V. Vaghasiya, Carmen C. Mayorga-Martinez, Martin Pumera
Summary: Sustainable decentralized energy generation and storage in cities are crucial for a sustainable future. This study presents a smart energy storage device based on thermal insulation and MXene, which can be integrated into walls to store electricity while maintaining the temperature. The device exhibits high specific capacitance, outstanding rate capability, and cyclic stability, making it suitable for extreme temperature conditions. Furthermore, it can be integrated into house insulation materials to power emergency devices during disasters.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Bing Wu, Jan Luxa, Jiri Sturala, Shuangying Wei, Lukas Dekanovsky, Abhilash Karuthedath Parameswaran, Min Li, Zdenek Sofer
Summary: The demand for substitutes of lithium chemistries in battery has led to the emergence of chloride ion batteries (CIBs) as a novel anion-based electrochemical energy storage. However, the use of CIBs is limited by the dissolution and side reactions of chloride-based electrode materials in liquid electrolytes. This study introduces a solid-state metal-organic material, [Al(DMSO)(6)]Cl-3, which allows for chloride ion transfer. By replacing Cl- with PF6-, the ionic conductivity of the prepared electrolyte is significantly increased, making it a potential candidate for solid-state chloride ion batteries.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Pradip Kumar Roy, Nikolas Antonatos, Tianchun Li, Yu Jing, Jan Luxa, Jalal Azadmanjiri, Petr Marvan, Thomas Heine, Zdenek Sofer
Summary: This study presents a self-powered (photoelectrochemical, PEC), ultrasensitive, and ultrafast photodetector platform made of few-layered palladium-phosphorus-sulfur (PdPS) material. The PEC photodetector exhibits superior responsivity, specific detectivity, and broadband photodetection capability. Additionally, the PdPS material also shows superior sensing ability to organic vapors and photocatalytic activity. These findings pave the way for practical applications in efficient future devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Chemistry, Multidisciplinary
Siowwoon Ng, Martin Pumera
Summary: Germanene, as a germanium analog of graphene, has shown great potential as a two-dimensional layered material with customizable properties and new functionalities. This review comprehensively covers the preparation, functionalization, and properties of germananes, as well as their applications in optoelectronics, catalysis, energy conversion and storage, sensors, and biomedical areas.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ziyi Guo, Tianyi Liu, Wanli Gao, Christian Iffelsberger, Biao Kong, Martin Pumera
Summary: Hollow metal-phenolic network (MPN)-based microrobots are synthesized and can be driven by multi-wavelength irradiation without fuel. The velocity of the microrobots can be altered by the thickness of the asymmetric capping, and their motion can be remotely controlled by switching the NIR or UV irradiation on and off. This proposed microrobot system provides a synthesis strategy to develop asymmetric light-navigated microrobots with tunable structure, multi-wavelength light-responsive mobility, and great reactive oxygen and nitrogen species (RONS) scavenging capacity for future medical treatment.
ADVANCED MATERIALS
(2023)
Article
Biophysics
Jose Munoz, Jorge Oliver-De La Cruz, Giancarlo Forte, Martin Pumera
Summary: This study examines the suitability of graphene-based 3D-printed nanocomposite bioelectronics to monitor breast cancer cell adhesion and the chemosensitivity of anti-cancer drugs. Through covalent biofunctionalization of 3D-printed nanocomposite graphene electrodes with fibronectin, the developed electrochemical system displays specificity and selectivity in monitoring breast cancer cell adhesion. The 3D-printed bioelectronic system shows excellent accuracy in rapidly screening anti-cancer drugs, comparable to the standard optical method but with the advantage of a label-free approach. This proof-of-concept work connects electronics to biological systems within 3D printing technology, providing the foundation for sustainable and cost-effective manufacturing of graphene-based 3D-printed nanocomposite bioelectronics for in vivo microenvironment simulation.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Physical
Michela Sanna, Katarina A. A. Novcic, Siowwoon Ng, Miroslav Cerny, Martin Pumera
Summary: MAX phases are layered ternary compounds with physical properties that have been widely studied, including their use in the synthesis of MXenes. Recently, their unexpected photoactivity under visible light has been reported. Through theoretical calculations and experimental characterisation, it was found that MAX phases have photoabsorption capabilities attributed to the presence of photoactive oxide impurities on their surface. These impurities naturally form from contact with air and solvents. This study highlights the potential use of MAX phases in other photoelectrochemical processes.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Energy & Fuels
Dawid Kasprzak, Carmen C. Mayorga-Martinez, Osamah Alduhaish, Martin Pumera
Summary: Biopolymer-based materials are promising components for wearable energy-storage devices due to their attractive properties. In this study, a wearable and flexible all-solid-state supercapacitor is developed using chitin as a biocompatible scaffold. The device exhibits impressive electrochemical performance and desired features for wearable devices. Moreover, it is applied to power an electronic gadget, representing an important step toward power-efficient, wearable, and sustainable energy-storage devices.
Article
Engineering, Chemical
Bhupender Pal, Abhilash Karuthedath Parameswaran, Bing Wu, Lukas Dekanovsky, Vlastimil Mazanek, Kalyan Jyoti Sarkar, Rajan Jose, Zdenek Sofer
Summary: Electrochemical capacitors, also known as supercapacitors, are widely studied due to their high power density and cycle life. This study investigates the influence of different anions in ionic liquid electrolytes on the charge storage mechanism and electrochemical stability of capacitors. The CNT//BF4:TFSI//CNT-based device shows superior electrochemical performance compared to other devices.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Chemistry, Physical
Filipa M. M. Oliveira, Jalal Azadmanjiri, Xuehang Wang, Minghao Yu, Zdenek Sofer
Summary: The development of new materials for EMI shielding is crucial, and MXenes have shown great potential as EMI shielding materials due to their electric conductivity, low density, and flexibility. Different processing techniques have been employed to produce MXene-based materials with desired EMI shielding performance. This review summarizes the processes and key parameters involved, discusses the determination of power coefficients and the concept of green shielding materials, and concludes with an overview of the current challenges and prospects in the production of MXene materials as EMI shields.
Article
Chemistry, Physical
Lukas Dekanovsky, Hai Huang, Sana Akir, Yulong Ying, Zdenek Sofer, Bahareh Khezri
Summary: Light-driven magnetic MXene-based microrobots (MXeBOTs) have been developed for efficient removal and degradation of bisphenol A (BPA). The MXeBOTs utilize embedded Fe2O3 nanoparticles (NPs) for magnetic propulsion and grafted bismuth NPs as cocatalysts. The stability and reusability of MXeBOTs are studied in relation to BPA concentration and chemical composition of the swimming environment.
Review
Engineering, Electrical & Electronic
Jayraj V. Vaghasiya, Carmen C. Mayorga-Martinez, Martin Pumera
Summary: Wearable sensors have made significant progress in sensing physiological and biochemical markers for telehealth, providing enormous potential for early disease detection. Recent advancements in 2D materials-based wearable sensors have introduced a new approach to remote and real-time health monitoring.
NPJ FLEXIBLE ELECTRONICS
(2023)
Editorial Material
Chemistry, Physical
Zdenek Sofer, Xuehang Wang, Minghao Yu