Article
Chemistry, Multidisciplinary
Shayan Louie, Yu Zhong, Si Tong Bao, Cedric Schaack, Alvaro Montoya, Zexin Jin, Nicholas M. Orchanian, Yang Liu, Wenrui Lei, Kelsey Harrison, James Hone, Alexander Angerhofer, Austin M. Evans, Colin P. Nuckolls
Summary: This study describes the synthesis of hexameric macrocyclic aniline (MA[6]) and its assembly into conductive organic wires. The electrical conductivity of ESMA[6] is high and responsive to acid-base conditions. The crystal structure of ES-MA[6] reveals the formation of trimeric units and nanotubes with regular channels, providing a potential route for synthetic nanotubes used in ion or small molecule transport. Spectroscopic analysis further demonstrates the interconversion between acidic and basic forms of the macrocycles and how charge carriers are formed through protonation, resulting in high electrical conductivity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Xiaoxi Zhang, Fabian Gaerisch, Zongping Chen, Yunbin Hu, Zishu Wang, Yan Wang, Liming Xie, Jianing Chen, Juan Li, Johannes Barth, Akimitsu Narita, Emil List-Kratochvil, Klaus Muellen, Carlos-Andres Palma
Summary: This study presents a method for fabricating highly conducting nanographene wires through self-assembly, photo-crosslinking, and thermal annealing on hexagonal boron nitride sheets. The bottom-up fabrication approach allows for the direct manufacturing of molecular functional elements in nanodevices.
NATURE COMMUNICATIONS
(2022)
Article
Polymer Science
Shuo Wang, Hongqian Xue, Shuang Guo, Meng Cao, Fanglin Cong, Sherif Araby, Qingshi Meng
Summary: The combination of graphene platelets and rubber nanoparticles can develop electrically conductive and toughened epoxy composite adhesives. Graphene platelets form a conductive network while rubber nanoparticles provide a viscoelastic phase, complementing each other to enhance the fracture toughness and electrical conductivity of the adhesives. These composite materials show improved mechanical properties and toughness, as confirmed by tests and microscopy analysis.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Lanjuan Xu, Juncheng Jiang, Xinlei Jia, Yingying Hu, Lei Ni, Chao Li, Wenjie Guo
Summary: The study demonstrates that CNTs/PMMA composites exhibit excellent thermal stability and flame retardancy. The addition of CNTs can increase the initial decomposition temperature, reduce weight loss ratio, and improve LOI value. Additionally, the composites can form a stable interconnected network structure with flame retardant properties.
Review
Environmental Sciences
Kaushik Pal, Alaa A. A. Aljabali, Samo Kralj, Sabu Thomas, Fernando Gomes de Souza
Summary: Combining two-dimensional graphene and its hybrid derivatives with liquid crystals, polymers, and nanomaterials enables the formation of hybrid nanocomposites with extraordinary properties, essential for switchable device technologies. Exclusive graphene self-assembly of liquid crystalline polymer nanocomposites exhibits unique functionalities, serving as both alignment and conductive layers for novel switchable device fabrication mechanism. The ultra thin-film nanocomposites based smart switchable devices show promising applications in stretchable electronics, energy storage, photodetectors, high contrast displays, and optoelectronics.
Article
Materials Science, Multidisciplinary
Qing Sun, Jiale Yu, Hanhu Liu, Yuanyuan Lin, Jian Zhang, Jiawei Sheng
Summary: In this study, 3D hierarchical CoAl-LDH microsphere hybrid catalysts were successfully fabricated, which exhibited excellent adsorption properties and high degradation rate. This provides new insights into using nano-clay precursors to construct catalysts for purifying antibiotic contaminants from aqueous environments.
Article
Mechanics
Yiqun Hu, Suhang Ding, Jianfei Xu, Yuhang Zhang, Jiejie Li, Wenwang Wu, Re Xia
Summary: The integration of traditional brick-and-mortar structure with graphene additives demonstrates remarkable efficiency for enhancing the toughness of metal matrix composites. This study proposes five different types of graphene/tungsten (Gr/W) nanocomposites that incorporate hierarchical nacre-like structures, leveraging the tensile toughness benefits of both nacre and graphene in metal matrix composites. The proposed hierarchical nacre-like structures could provide valuable insights for the design of other metal matrix composites with robust performances.
COMPOSITE STRUCTURES
(2023)
Article
Chemistry, Physical
Javier Crespo-Miguel, Sergio Lucarini, Angel Arias, Daniel Garcia-Gonzalez
Summary: Additive manufacturing allows for the design of thermoplastic components with structural support, electrical conductivity, and heat generation modulated by mechanical deformation. However, the mechanisms and interplays governing material response at the microstructural level are still uncertain. In this study, we develop an experimental method to characterize conductive filaments from mechanical, electrical, and thermal perspectives, and propose a homogenization framework to analyze the microstructure. The framework considers viscoplasticity, electrical and thermal conduction, convection, heat generation through the Joule effect, and their interdependencies. After validation, the framework is applied to optimize fabrication requirements for desired properties in final products, such as stiffness, conductivity, and sensing capabilities of filaments.
NPJ COMPUTATIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
James L. L. Suter, Maxime Vassaux, Peter V. V. Coveney
Summary: Using large-scale classical molecular dynamics simulations, the mechanics of nano-reinforcement of graphene-based nanocomposites are investigated. The simulations show that a significant amount of defect-free, predominantly flat graphene flakes is necessary to enhance the materials properties. The results are in excellent agreement with experimental and proposed continuum shear-lag theories. The optimal critical lengths for enhancement are approximately 500 nm for graphene and 300 nm for graphene oxide (GO). The simulations also suggest that aligned and planar flakes are crucial for optimal reinforcement, as undulations degrade the enhancement of materials properties.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jose M. Gonzalez-Dominguez, Alejandro Baigorri, Miguel A. Alvarez-Sanchez, Eduardo Colom, Belen Villacampa, Alejandro Anson-Casaos, Enrique Garcia-Bordeje, Ana M. Benito, Wolfgang K. Maser
Summary: This study focuses on the development of water-based inks made of a ternary system (graphene oxide, carbon nanotubes, and nanocellulose) using an autoclave method to obtain low-viscosity inks, high-viscosity pastes, and self-standing hydrogels. Through spray- or rod-coating technologies, the resulting inks and pastes can be processed into conductive films, and the hydrogels can be turned into aerogels.
Article
Chemistry, Multidisciplinary
Ashenafi Zeleke Melaku, Wei-Tsung Chuang, Yeong-Tarng Shieh, Chih-Wei Chiu, Duu-Jong Lee, Juin-Yih Lai, Chih-Chia Cheng
Summary: The programmed formation of hierarchical graphene nanosheets through a combination of first and second exfoliations using ODCB and A-PPG allows for the direct exfoliation of graphite into high-quality graphene nanosheets with wide-range tunable layer thickness. The use of adenine-functionalized supramolecular polymer in the second exfoliation process enhances the dispersion stability of graphene nanosheets and enables the production of tailored graphene with desired structural characteristics. This development provides a facile and efficient graphene fabrication process for potential applications in various fields.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Nanoscience & Nanotechnology
Xiaoling Luo, Guanda Yang, Dirk W. Schubert
Summary: The synergistic effect of pristine carbon nanotubes and functionalized carbon nanotubes in conductive poly(methyl methacrylate)/graphene nanoplatelet composites was studied, showing different behaviors in in-plane and perpendicular directions. A schematic diagram explaining the evolution of 3D conductive pathways at different ratios was presented.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shuguang Li, Xiaomin Hou, Shixiang Lu, Wenguo Xu, Jiasheng Tao, Zhenlu Zhao, Guojie Hu, Fengxin Gao
Summary: The optimum preparation conditions for a composite material of graphene and polydopamine on a copper substrate were explored using orthogonal experimental method. The composite material exhibited ultrahigh thermal conductivity, making it suitable for thermal management of advanced electronic chips.
Article
Chemistry, Physical
Ashenafi Zeleke Melaku, Wei-Tsung Chuang, Chih-Wei Chiu, Juin-Yih Lai, Chih-Chia Cheng
Summary: This study successfully developed a programmed exfoliation method for highly crystalline molybdenum disulfide (MoS2) into water-dispersible exfoliated nanosheets with well-tunable structural characteristics. The exfoliation process involved using water as a solvent and a water-soluble cytosine-functionalized supramolecular polymer (Cy-PPG). The resulting MoS2/Cy-PPG composites exhibited long-term dispersion stability in water after the second exfoliation. Broad, tunable exfoliation of MoS2 can be achieved by adjusting the content of Cy-PPG within the composites, offering great potential for high-quality, custom-made MoS2 nanomaterials.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Natalie N. Tarasenka, Vladislav G. Kornev, Mikhail I. Nedelko, Hanna M. Maltanova, Sergey K. Poznyak, Nikolai V. Tarasenko
Summary: A novel method based on plasma pre-treatment and electric field-assisted laser ablation was developed for the synthesis of ZnO/C nanocomposites and their assembly into hierarchically organized nanostructures on a carbon cloth substrate, which showed promising performance as supercapacitor electrodes. The morphology and performance of the materials could be tuned by adjusting the applied electric field and liquid composition, demonstrating high specific capacitance and storage efficiency.
Article
Chemistry, Physical
Rui Mi, Hao Liu, Hao Wang, Ka-Wai Wong, Jun Mei, Yungui Chen, Woon-Ming Lau, Hui Yan
Article
Electrochemistry
Yi Zhang, Hao Liu, Zehua Zhu, Ka-wai Wong, Rui Mi, Jun Mei, Woon-ming Lau
ELECTROCHIMICA ACTA
(2013)
Article
Chemistry, Multidisciplinary
Gucheng Long, Changyu Tang, Ka-wai Wong, Changzhen Man, Meikun Fan, Woon-ming Lau, Tao Xu, Bin Wang
Article
Chemistry, Multidisciplinary
Tomas Trebicky, Patrick Crewdson, Maxim Paliy, Igor Bello, Heng-Yong Nie, Zhi Zheng, Xiaoli Fan, Jun Yang, Elizabeth R. Gillies, Changyu Tang, Hao Liu, K. W. Wong, W. M. Lau
Article
Engineering, Electrical & Electronic
Mengxing Ouyang, Wen J. Li, Philip H. W. Leong, Ka Wai Wong
IEEE TRANSACTIONS ON NANOTECHNOLOGY
(2012)
Article
Electrochemistry
Yi Zhang, Hao Liu, Zehua Zhu, Ka-Wai Wong, Rui Mi, Jun Mei, Woon-Ming Lau
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2013)
Article
Chemistry, Physical
Q. Yang, X. T. Zhang, M. Y. Zhang, Y. Gao, H. Gao, X. C. Liu, H. Liu, K. W. Wong, W. M. Lau
JOURNAL OF POWER SOURCES
(2014)
Article
Chemistry, Multidisciplinary
Siu-Fung Lee, Qun Wang, Donald Ka-Long Chan, Po-Ling Cheung, Ka-Wai Wong, Jimmy C. Yu, Beng S. Ong, Ken Cham-Fai Leung
NEW JOURNAL OF CHEMISTRY
(2014)
Article
Chemistry, Multidisciplinary
Zhi Zheng, Hongxiao Zhao, Wenjun Fa, Weiwei He, Ka-wai Wong, Raymund W. M. Kwok, Woon Ming Lau
Article
Chemistry, Multidisciplinary
Qun Wang, Siu-Fung Lee, Changyu Tang, Jimmy Chai-Mei Yu, Ken Cham-Fai Leung, Ka-Wai Wong
Article
Nanoscience & Nanotechnology
Hongxiao Zhao, Zhi Zheng, Jing Li, Huimin Jia, Ka-wai Wong, Yidong Zhang, Woon Ming Lau
NANO-MICRO LETTERS
(2013)
Article
Chemistry, Physical
Changzhen Man, Peng Jiang, Ka-wai Wong, Yun Zhao, Changyu Tang, Meikun Fan, Woon-ming Lau, Jun Mei, Shaomin Li, Hao Liu, David Hui
JOURNAL OF MATERIALS CHEMISTRY A
(2014)
Article
Energy & Fuels
Changyu Tang, Changzhen Man, Yungui Chen, Fei Yang, Linshan Luo, Zhi-Feng Liu, Jun Mei, Woon-Ming Lau, Ka-Wai Wong
Article
Materials Science, Multidisciplinary
Khak Ho Lim, Ka Wai Wong, Yu Liu, Yu Zhang, Doris Cadavid, Andreu Cabot, Ka Ming Ng
JOURNAL OF MATERIALS CHEMISTRY C
(2019)
Article
Chemistry, Multidisciplinary
Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet
Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.
Article
Chemistry, Multidisciplinary
Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives
Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.
Article
Chemistry, Multidisciplinary
Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani
Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.
Article
Chemistry, Multidisciplinary
Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim
Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.
Article
Chemistry, Multidisciplinary
Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu
Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.
Article
Chemistry, Multidisciplinary
Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani
Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.
Article
Chemistry, Multidisciplinary
Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin
Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.
Article
Chemistry, Multidisciplinary
Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu
Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.
Article
Chemistry, Multidisciplinary
Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai
Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.
Article
Chemistry, Multidisciplinary
Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee
Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.
Article
Chemistry, Multidisciplinary
Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He
Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.
Article
Chemistry, Multidisciplinary
Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim
Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.
Article
Chemistry, Multidisciplinary
Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong
Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.
Article
Chemistry, Multidisciplinary
Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He
Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.
Article
Chemistry, Multidisciplinary
Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc
Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.