Article
Chemistry, Physical
Kaiyue Song, Hailong Yang, Binjun Chen, Xiaoli Lin, Yue Liu, Yuanzheng Liu, Haohong Li, Shoutian Zheng, Zhirong Chen
Summary: A new type of ternary memorizer, based on a facile melamine-cyanuric acid hydrogen-bonded organic frame-work, has been successfully fabricated. The ternary resistive switching behavior can be attributed to the filled traps in the 2D layer and the carriers flowing in the 3D network. The memorizer exhibits good memory performance, high yield, and superior thermal stability and irradiative tolerance.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Jun-Xi Wu, Partha Pratim Bag, Yan-Tong Xu, Li Gong, Chun-Ting He, Xiao-Ming Chen, Jie-Peng Zhang
Summary: A new type of catalyst support using hydrogen-bonded ultrathin nanosheets was developed, demonstrating high stability and electron modulation effects. This pseudo-porous catalyst support also showed potential for application in other metal phosphides.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Ashis Chhetri, Kannimuthu Karthick, Arun Karmakar, Subrata Kundu, Joyee Mitra
Summary: Small organic molecules and hydrogen-bonded aggregates are being explored as alternatives to traditional electrocatalysts for the low-cost generation of H-2. The use of melamine and adipic acid-based hydrogen-bonded organic ionic systems as electrocatalysts for water oxidation reaction (WOR) has shown promising results, with high current density and efficiency. These systems offer modifiability and unique molecular composition, making them potential candidates for WOR electrocatalysis.
Article
Chemistry, Multidisciplinary
Ashis Chhetri, Kannimuthu Karthick, Arun Karmakar, Subrata Kundu, Joyee Mitra
Summary: Applications of small organic molecules and hydrogen-bonded aggregates for low-cost hydrogen generation are gaining traction. Melamine and adipic acid-based hydrogen-bonded organic ionic (BMA) and co-crystal systems have been explored as electrocatalysts for water oxidation reaction (WOR). The BMA system, with its unique molecular composition and hydrogen-bonded motifs, exhibits enhanced electrocatalytic activity and achieves a high current density at a relatively low overpotential.
Article
Engineering, Environmental
Zhe Wang, Qi Lai, Ning Ding, Ping Yin, Siping Pang, Jean'ne M. Shreeve
Summary: This study successfully synthesized two energetic zwitterionic compounds through a straightforward one-step synthetic route and found that one compound has more hydrogen bond acceptors and a layered structure, while the other compound has a twisted layered structure. Additionally, one of the compounds has a decomposition temperature of 371 degrees Celsius, exhibiting good detonation performance and low impact sensitivity, providing a promising pathway for the development of high nitrogen energetic materials.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Lavanya Kumar, Sibananda G. Dash, Katarina Leko, Damian Trzybinski, Nikola Bregovic, Dominik Cincic, Mihails Arhangelskis
Summary: The discovery of a halogen-bonded ternary cocrystal and the exploration of its multicomponent phases through mechanochemical interconversion were investigated in this study. The observed solid-state reaction pathways were explained by computational calculations and experimental measurements.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Environmental Sciences
Mariana Simoes Garcia, Deborah Navit de Carvalho Cavalcante, Marcella da Silva Araujo Santiago, Paloma Da Cunha de Medeiros, Cinthia Castro do Nascimento, Gustavo Fernandes Camargo Fonseca, Luciana Le Sueur-Maluf, Juliana Elaine Perobelli
Summary: The study revealed that agrochemicals detected in Brazilian agricultural products have a higher reproductive toxicity on male juvenile rats, especially when used individually. However, in combined treatments, the toxicity of these agrochemicals mainly showed an antagonistic effect, suggesting endocrine disruptive effects.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Multidisciplinary Sciences
Hongshuang Guo, Rakesh Puttreddy, Turkka Salminen, Alons Lends, Kristaps Jaudzems, Hao Zeng, Arri Priimagi
Summary: The authors report a liquid crystalline network that contains dynamic halogen-bond crosslinks and possesses reversible thermo-responsive shape memory behavior. Shape programming can be achieved through human-hand operation, and a micro-robotic injection model is proposed to achieve complex shape morphing in aqueous media.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Yalan Hu, Yuefan Liu, Yixin Kuang, Suxin Zhou, Luyi Chen, Ningbo Zhou, Juan Zheng, Gangfeng Ouyang
Summary: In this study, a composite hydrogen-bonded organic framework (MA/PFC-1) was successfully constructed as an ideal coating material for solid phase microextraction (SPME). The MA/PFC-1 fiber exhibited satisfactory enrichment factors for nitroaromatic compounds (NACs) and was further used for the precise determinations of NACs in water samples. The developed analytical method showed low limits of detection and good reproducibility.
ANALYTICA CHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Brian J. Eckstein, Loren C. Brown, Bruce C. Noll, Michael P. Moghadasnia, Gary J. Balaich, C. Michael McGuirk
Summary: The manner of bonding between constituent atoms or molecules affects the properties of materials. Porous frameworks exemplify this, with their connectivity modes giving rise to subclasses with unique properties. Chalcogen bonding, a subclass of s-hole bonding, is shown to be a viable mode of connectivity in low-density porous frameworks, expanding the diversity of porous framework materials.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Biochemistry & Molecular Biology
U. Abdulkareem, Thejus R. Kartha, V Madhurima
Summary: This study investigates the physico-chemical properties of binary mixtures of acetone with eight primary alcohols using molecular dynamics. The findings show anomalous characteristics between certain components at certain concentrations, and a decrease in hydrogen bond clustering as the concentration of acetone increases.
JOURNAL OF MOLECULAR MODELING
(2022)
Article
Biochemistry & Molecular Biology
U. Abdulkareem, Thejus R. Kartha, V. Madhurima
Summary: This study reports on classical molecular dynamics studies on mixtures of aniline with 8 primary alcohols for the complete concentration range. The results show the predominance of OH-O interactions and analyze the structures in the network using RDF, hydrogen bond statistics, and GTA. The study also reveals that alcohol-alcohol hydrogen bonds cluster for lower aniline concentrations, while aniline-aniline interactions are not affected by changes in concentration.
JOURNAL OF MOLECULAR MODELING
(2023)
Article
Engineering, Environmental
Yafeng Liu, Shan Ni, Wenjie Wang, Meng Rong, Hui Cai, Huifang Xing, Liangrong Yang
Summary: A fast and simple method for the direct fabrication of functionalized hydrogen-bonded organic superstructures with excellent uranium adsorption ability and selective uranium adsorption properties is reported.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Chemical
Olivier Monfort, Patricia Petriskova
Summary: This review article provides a comprehensive report on vanadium oxides and their applications in environmental processes, highlighting their physical properties and effectiveness in photochemical processes.
Article
Polymer Science
Qilin Wen, Yinghong Chen, Xin Wang, Haoran Pei
Summary: A ternary hydrogen-bonded complex intumescent flame retardant (TH-IFR) was synthesized through hydrothermal reaction, consisting of melamine (ME), phosphoric acid (PA), and pentaerythritol (PER). The combination of TH-IFR with 4A molecular sieve as a synergist was used to improve the flame retardancy of polypropylene (PP). The flame retardancy and mechanical properties of the PP composites were significantly enhanced by incorporating 1 wt% synergist 4A, which changed the pyrolysis process and promoted char-forming chemical interaction.
Article
Chemistry, Physical
Charalambos Evangeli, Edward McCann, Jacob L. Swett, Sumit Tewari, Xinya Bian, James O. Thomas, G. Andrew D. Briggs, Oleg Kolosov, Jan A. Mol
Summary: Disorder in graphene affects electron cooling and electron-phonon scattering, with an increase in disorder leading to changes in scattering rates, likely due to the opening of new phonon scattering channels.
Article
Physics, Multidisciplinary
A. N. Pearson, Y. Guryanova, P. Erker, E. A. Laird, G. A. D. Briggs, M. Huber, N. Ares
Summary: Research demonstrates that there is a linear relationship between the accuracy of clocks and entropy, with experimental measurements showing this relationship exists in nanoscale clocks and operates within an order of magnitude of the theoretical limit.
Article
Chemistry, Physical
Yakun Gao, Peiyu Chen, Martin R. Castell
Summary: The study reveals the formation of a complex TiOx monolayer superstructure on palladium (Pd) crystal islands, consisting of two periodicities and requiring a formation area of at least 100 nm(2).
Article
Materials Science, Multidisciplinary
Peiyu Chen, Yakun Gao, Martin R. Castell
Summary: The SMSI process involves the encapsulation of metal particles by an oxide layer originating from the substrate, driven by a reduction in surface energy. Studies on epitaxial Pd nanocrystals grown on different substrates reveal that increasing crystal height results in a higher height-to-width ratio, but this increase is lower for encapsulated crystals due to modified interfacial structure during the SMSI process. The SMSI is preferentially observed on larger crystals, reducing the elastic strain energy and resulting in less strain in the encapsulated particles.
PHYSICAL REVIEW MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Shen Zhou, Jiayue Yuan, Zi-Yu Wang, Kun Ling, Peng-Xiang Fu, Yu-Hui Fang, Ye-Xin Wang, Zheng Liu, Kyriakos Porfyrakis, G. Andrew D. Briggs, Song Gao, Shang-Da Jiang
Summary: The addressability of individual electron spin levels in endohedral nitrogen fullerenes has been achieved using molecular engineering and liquid-crystal-assisted methods. This allows for the coherent manipulation of electron spin levels and the implementation of quantum geometric phase manipulation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Shuqiu Wang, Xiao Hu, Jacek Goniakowski, Claudine Noguera, Martin R. Castell
Summary: Grain boundaries are important to understand polycrystalline materials and their properties. In 2D materials, grain boundaries can be described as line defects, and their atomic structures have been extensively studied. Zero-degree grain boundaries, called domain boundaries, where there is only a lattice offset between two grains without any rotation, are rare in 2D materials. By combining experimental and theoretical investigations, researchers observed and solved the atomic structures of four main domain boundaries in a monolayer of Ti2O3 supported on Au(111). The formation energies of these domain boundaries explain their different frequencies of occurrence. The strong epitaxial constraint from the Au(111) substrate stabilizes unique domain boundary structures that are not observed in van-der-Waals bonded 2D materials.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Analytical
Merel J. Lefferts, Martin R. Castell
Summary: Percolation networks of polypyrrole are used to detect buried ANFO in different types of soil, achieving reliable detection of low concentrations of ANFO, with clay acting as a significant barrier to NH3 permeability.
FORENSIC CHEMISTRY
(2022)
Article
Physics, Multidisciplinary
Xinya Bian, Zhixin Chen, Jakub K. Sowa, Charalambos Evangeli, Bart Limburg, Jacob L. Swett, Jonathan Baugh, G. Andrew D. Briggs, Harry L. Anderson, Jan A. Mol, James O. Thomas
Summary: The outcome of electron-transfer processes is determined by the quantum-mechanical interplay between electronic and vibrational degrees of freedom. This study investigates electron transport through a porphyrin dimer molecule weakly coupled to graphene electrodes, revealing sequential tunneling initiated by current-induced phonon absorption and proceeding through rapid sequential transport via a nonequilibrium vibrational distribution.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Zhixin Chen, Jie-Ren Deng, Songjun Hou, Xinya Bian, Jacob L. Swett, Qingqing Wu, Jonathan Baugh, Lapo Bogani, G. Andrew D. Briggs, Jan A. Mol, Colin J. Lambert, Harry L. Anderson, James O. Thomas
Summary: Since the early days of quantum mechanics, it has been known that electrons have wave-particle duality. In this study, we demonstrate that electron transmission remains phase-coherent in molecular porphyrin nanoribbons connected to graphene electrodes. This opens up new avenues for studying quantum coherence in molecular electronic and spintronic devices.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Physics, Multidisciplinary
Florian Vigneau, Juliette Monsel, Jorge Tabanera, Kushagra Aggarwal, Lea Bresque, Federico Fedele, Federico Cerisola, G. A. D. Briggs, Janet Anders, Juan M. R. Parrondo, Alexia Auffeves, Natalia Ares
Summary: The ultrastrong coupling between single-electron tunneling and nanomechanical motion provides exciting opportunities for exploring fundamental questions and developing new platforms for quantum technologies. We have measured and modeled this electromechanical coupling in a fully suspended carbon nanotube device and found a ratio of gm/omega m = 2.72 +/- 0.14, which is the highest among all other electromechanical platforms and well within the ultrastrong coupling regime.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Multidisciplinary Sciences
Charalambos Evangeli, Sumit Tewari, Jonathan Marcell Kruip, Xinya Bian, Jacob L. Swett, John Cully, James Thomas, G. Andrew D. Briggs, Jan A. Mol
Summary: Controlled electrobreakdown of graphene is important for various applications, and statistical analysis of the process provides insights into its behavior and characteristics under different conditions.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Multidisciplinary
James O. Thomas, Jakub K. Sowa, Bart Limburg, Xinya Bian, Charalambos Evangeli, Jacob L. Swett, Sumit Tewari, Jonathan Baugh, George C. Schatz, G. Andrew D. Briggs, Harry L. Anderson, Jan A. Mol
Summary: In this study, single-electron tunneling through a redox-active edge-fused porphyrin trimer was investigated, and its transport behavior was found to be well described by the Hubbard dimer model, providing insights into the role of electron-electron interactions in charge transport. By empirically determining the molecule's electron-electron repulsion energies and confirming them with density functional calculations, the research established the electronic structure of the molecule within various oxidation states. The gate-dependent rectification behavior confirmed the selection rules and state degeneracies deduced from the Hubbard model, highlighting the importance of electron-electron interactions in single-molecule devices.
Article
Chemistry, Multidisciplinary
Merel J. Lefferts, Ben Armitage, Krishnan Murugappan, Martin R. Castell
Summary: This study demonstrates the use of PEDOT conducting polymer percolation networks for sensitive and reversible NO2 sensing. By adjusting the polymerization and doping conditions, control over sensing behavior is achieved, resulting in reversible NO2 sensors with higher sensitivity compared to traditional thin film sensors. A detection limit of 907 +/- 102 ppb was achieved.
Article
Chemistry, Analytical
Merel J. Lefferts, Lisa H. Humphreys, Nathalie Mai, Krishnan Murugappan, Ben Armitage, Jean-Francois Pons, Martin R. Castell
Summary: The development of ANFO vapour sensors for widespread IED detection faces challenges in achieving high sensitivity and low detection limits due to concealment and low vapour pressures. By using polymer percolation networks, ANFO chemiresistive vapour sensors show improved sensitivity compared to thin film sensors, detecting vapour concentrations emitted by various ammonium nitrate-containing fertilisers and fertiliser-diesel mixtures.
Article
Materials Science, Multidisciplinary
Nhlakanipho Mkhize, Krishnan Murugappan, Martin R. Castell, Harish Bhaskaran
Summary: Electrohydrodynamic Jet Printing (EHD) is capable of printing sub-micron structures with various materials, showing promising results in compared to traditional additive manufacturing techniques. By using EHD to print polyaniline-based chemiresistors, researchers achieved high detection sensitivity for ammonia gas sensors on both glass and flexible substrates. The study also highlighted the importance of dopant acids in polymer structure and sensing, paving the way for further development of miniaturized flexible polymer sensors.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
