Article
Chemistry, Physical
Inho Song, Xiaobo Shang, Jaeyong Ahn, Jeong Hyeon Lee, Wanuk Choi, Hiroyoshi Ohtsu, Jin Chul Kim, Sang Kyu Kwak, Joon Hak Oh
Summary: In this study, a novel chiral organic semiconductor was synthesized and self-assembled into supramolecular nanowires. It was found that the chirality of the nanowires could be transferred via intermolecular interactions, and the optical performance was significantly enhanced upon doping with phenylhydrazine. The doped nanowires also exhibited fast and stable photoswitching properties.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Thomas Dippong, Erika Andrea Levei, Ioan Petean, Iosif Grigore Deac, Oana Cadar
Summary: This work synthesized MnFe2O4/SiO2 ceramic nanocomposites via sol-gel method and investigated the effect of metal ion doping and annealing temperature on their structure, morphology, and magnetic properties. It was found that the doping ion and annealing temperature had significant influence on the structural and magnetic parameters of the nanocomposites.
Article
Chemistry, Multidisciplinary
Huan Wei, Ping-An Chen, Jing Guo, Yu Liu, Xincan Qiu, Huajie Chen, Zebing Zeng, Thuc-Quyen Nguyen, Yuanyuan Hu
Summary: This study reports the effectiveness of two low-cost amines, TBD and DBN, for n-doping of organic semiconductors. These dopants greatly enhance the electrical conductivity of organic semiconductors, showing promising applications in organic electronic devices.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Dingyi Lu, Fanming Huang, Caifang Gao, Jianming Yang, Jing Guo, Yuanyuan Hu, Qinye Bao, Yong-Young Noh, Junhao Chu, Wenwu Li
Summary: A new doping system using an organic salt p-dopant is reported to significantly improve the device performance of organic field-effect transistors (OFETs). The optimized doping ratios increase the hole mobility and reduce the threshold voltage, while also reducing contact resistance and activation energy. The study also explores the impact of doping ratios on trap density.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Hui Yang, Sa Cai, Yifei Zhang, Dongping Wu, Xiaosheng Fang
Summary: The current prevailing method for MoS2 FET fabrication involves complex steps like e-beam lithography and annealing, which are time-consuming and affect device performance. A new e-beam lithography-free method with maze-like electrodes is introduced in this study, showing potential for future electronic devices.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Donia Saadi, Cigdem Yumusak, Ivana Zrinski, Andrei Ionut Mardare, Samir Romdhane, Niyazi Serdar Sariciftci, Mihai Irimia-Vladu, Markus Clark Scharber
Summary: This study investigates the magnetic field effect on the source-drain current of organic field-effect transistors using semiconductor layers made of H-bonded pigments. The results show that all devices experience a reduction in source-drain current when subjected to an external magnetic field, regardless of the applied magnetic field's direction. The observed increase in magnetoresistance is attributed to the semiconductor or the semiconductor-dielectric interface, unaffected by gate electrodes or deposition procedure. The formation of bipolarons is proposed as the cause for the magnetic field effect, as all prepared devices exhibit single charge carrier nature. These findings demonstrate the similar behavior of hydrogen-bonded semiconductors and classical van der Waals-bonded fully conjugated semiconductors.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Wanlong Lu, Jingning Cao, Chenyang Zhai, Laju Bu, Guanghao Lu, Yuanwei Zhu
Summary: This study investigated the influence of a novel soluble molecular dopant, CN6-CP, on the performance optimization of OFETs. The results showed that doping with CN6-CP significantly improved the field-effect mobility of OFETs and enabled wide tunability of the threshold voltage, demonstrating great potential for organic electronic applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Amit Panwar, K. L. Yadav
Summary: Studying the antibacterial properties of Ag-ZnO nanostructures revealed their ability to penetrate bacterial cell walls, with a minimum inhibitory concentration of 140ug/ml.
Article
Chemistry, Physical
Cedric Bourges, Wenhao Zhang, Krushna Kumari Raut, Yuka Owada, Naoyuki Kawamoto, Masanori Mitome, Kazuaki Kobayashi, Jean-Francois Halet, David Berthebaud, Takao Mori
Summary: This study presents the first comprehensive theoretical and experimental investigations of Mn substitution within the CoSb3-skutterudite. The results provide evidence that Mn substitution stabilizes p-type conduction and highlights the formation of unexpected composite phases. This unexpected composite formation leads to a record-breaking power factor.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xincan Qiu, Jing Guo, Ping-An Chen, Kaixuan Chen, Yu Liu, Chao Ma, Huajie Chen, Yuanyuan Hu
Summary: This study demonstrates that high bias-stress stability can be achieved in vertical structured OFETs (VOFETs) in combination with doping techniques, which outperforms conventional planar OFETs. By optimizing device performance and doping PDVT-10 to reduce trapping effects, the bias-stress stability of VOFETs is significantly improved. The characteristic time of doped PDVT-10 VOFETs is found to be over four times larger than that of planar PDVT-10 OFETs under the same bias-stress conditions, showing promising applications of VOFETs and effective strategy for highly bias-stress stable OFETs.
Article
Chemistry, Multidisciplinary
Eun Kwang Lee, Hanum Abdullah, Fabrizio Torricelli, Dong Hyun Lee, Jae Kwon Ko, Hyun Ho Kim, Hocheon Yoo, Joon Hak Oh
Summary: Enhanced charge transport characteristics were observed in molybdenum diselenide (MoSe2) through a sequential engineering process called PESOD-2H/1T, resulting in a significant increase in effective carrier mobility and photoresponsivity. Moreover, MoSe2 phototransistor processed with PESOD maintained its optoelectronic properties under tensile stress.
Article
Engineering, Chemical
Veerendra Singh, Samik Nag, N. Gurulaxmi Srikakulapu, Asim K. Mukherjee
Summary: This study developed a novel magnetic separator that uses alternating magnetic field to exploit differences in the electromagnetic properties of minerals. A mathematical model was created to simulate mineral particle trajectories under varying magnetic field intensities and rotation speeds. The designed magnetic separator showed improved separation efficiency and selectivity for ferruginous manganese ores. The results suggest the potential for the application of this magnetic separator in other multi-magnetic mineral materials.
MINERALS ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Xubin Li, Jianjun Huang, Yaqiang Dong, Xincai Liu, Ronglin Zhao, Shouding Wu, Hang Wu, Wei Gao, Aina He, Jiawei Li
Summary: This work systematically investigates the effect of Ge content on the soft magnetic properties and microstructure of FeSiGe soft magnetic powder cores (SMPCs). The results show that the addition of Ge increases the electrical resistivity of Fe93.5-xSi6.5Gex SMPCs and influences the coercivity. Optimal magnetic properties are achieved with 2 wt% Ge content, including stable effective permeability of 78.4 up to 1 MHz, low core loss of 589.5 mW/cm3 at a maximum magnetic induction of 0.1 T and frequency of 50 kHz. Doping with Ge reduces micro-vortex dots and facilitates domain wall movement, leading to improved magnetic properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Taekham Kim, Doohyeok Lim, Jaemin Son, Kyoungah Cho, Sangsig Kim
Summary: This study demonstrates reconfigurable n- and p-channel operations in a tri-top-gate field-effect transistor made of a p(+)-i-n(+) silicon nanowire. The device features simple design and high performance, allowing control of both operation modes on the same device.
Article
Chemistry, Physical
Z. F. Gu, Z. C. Yu, B. Hong, J. C. Xu, Y. B. Han, X. L. Peng, H. L. Ge, X. Q. Wang
Summary: La-doped SrCo2Z hexaferrites exhibit improved magnetic properties and microwave absorption performance. The best microwave absorption performance is achieved in Sr2.9La0.1Co2Fe24O41 hexaferrites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Li-Na Ma, Zi-Han Wang, Lin Zhang, Lei Hou, Yao-Yu Wang, Zhonghua Zhu
Summary: Researchers have developed a new metal-organic framework (MOF) material that shows excellent selectivity for separating acetylene from multicomponent mixtures. The material has unique tubular channels and open metal sites that enhance the interactions with acetylene molecules, resulting in high-purity acetylene separation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Dazhi Yao, Cheng Tang, Xing Zhi, Bernt Johannessen, Ashley Slattery, Shane Chern, Shi-Zhang Qiao
Summary: In this study, a more rational structural model for NiCu dual-atom catalysts is proposed, and the distance-dependent inter-metal interaction is investigated. It is found that a distance threshold of around 5.3 angstrom between adjacent Ni-N-4 and Cu-N-4 moieties can enhance the selectivity and activity of the CO2 reduction reaction. A universal macro-descriptor is established to guide the rational design and synthesis of advanced dual-atom catalysts.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Zehao Sun, Jie Wei, Yunpeng Li, Zhiting Liu, Minchuan Xiahou, Guogang Chen, Lin Zhao, Zhenxiang Cheng
Summary: A novel photovoltaic architecture was designed and constructed using (Sm and Ni) gradient-doped BiFeO3 multilayers to achieve enhanced photovoltaic performance. The experimental results showed that the gradient distribution of oxygen vacancies greatly improved the photovoltaic performance of the gradient-doped BiFeO3 multilayer. Particularly, the photocurrent density (J(sc)) of 80 μA cm(-2) and open-circuit voltage (V-oc) of 0.49 V were much higher than those of pure BiFeO3 films reported in previous literature.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Energy & Fuels
Jiaxin Guo, Yao Zheng, Zhenpeng Hu, Caiyan Zheng, Jing Mao, Kun Du, Mietek Jaroniec, Shi-Zhang Qiao, Tao Ling
Summary: Researchers have developed a new method to directly electrolyze seawater for hydrogen production. By introducing a hard Lewis acid layer on the catalyst surface, they were able to generate local alkalinity, improving the efficiency of water splitting.
Article
Green & Sustainable Science & Technology
Zhuang-Hao Zheng, Xiao-Lei Shi, Dong-Wei Ao, Wei-Di Liu, Meng Li, Liang-Zhi Kou, Yue-Xing Chen, Fu Li, Meng Wei, Guang-Xing Liang, Ping Fan, Gao Qing (Max) Lu, Zhi-Gang Chen
Summary: Flexible thermoelectric materials with high performance and flexibility show potential for converting waste heat into useful electricity. The textured structure design of Bi2Te3 thin films provides high thermoelectric performance and withstands 2,000 bending tests, demonstrating excellent flexibility. A flexible device assembled from 40 pairs of thin films exhibits outstanding output power density under temperature gradient, indicating its potential application in harvesting thermal energy from the environment or human bodies.
NATURE SUSTAINABILITY
(2023)
Article
Chemistry, Multidisciplinary
Shazed Aziz, Xi Zhang, Sina Naficy, Bidita Salahuddin, Edwin W. H. Jager, Zhonghua Zhu
Summary: Helical plants have the ability to respond to natural stimuli, and scientists have replicated this capability in artificial muscles. However, these shape-mimicked actuators are not adaptive to changing environmental conditions. In this study, a unique microstructural biomimicking approach is used to create artificial muscles that can replicate the hydrotropism and thermotropism of helical plants. These self-adaptive muscle yarns have rapid movement and can autonomously close a window in wet climates.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shao-Jian Zhang, Junnan Hao, Yilong Zhu, Huan Li, Zhan Lin, Shi-Zhang Qiao
Summary: In this study, a dynamic Zn interface modulation based on the molecular switch strategy is utilized to solve the unstable Zn/electrolyte interface problem of Zn electrodes in aqueous media. This modulation is achieved by employing gamma-butyrolactone (GBL) in ZnCl2/H2O electrolyte. The dynamic molecular switch strategy enables high Zn reversibility and enhances the cycling performance of Zn||iodine batteries under high Zn depth of discharge (50%).
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jiahao Liu, Chao Ye, Han Wu, Mietek Jaroniec, Shi-Zhang Qiao
Summary: In this study, an acid-assisted confined self-assembly method (ACSA) was developed to prepare a two-dimensional mesoporous zincophilic sieve (2DZS) as the kinetic interface. The 2DZS interface effectively reduces the anodic polarization of sulfur-based aqueous zinc batteries (SZBs) at high current density, leading to improved lifespan and energy density.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Yiran Jiao, Haobo Li, Yan Jiao, Shi-Zhang Qiao
Summary: By using density functional theory (DFT) calculations, the activity and selectivity landscape on 54 MXene surfaces were constructed, and it was found that the activity of the C-N coupling step is mainly determined by the *CO adsorption strength, while the selectivity relies more on the co-adsorption strength of *N and *CO. Based on these findings, an ideal C-N coupling MXene catalyst should have moderate *CO adsorption and stable *N adsorption. Through the machine learning-based approach, data-driven formulas for describing the relationship between adsorption strengths and atomic physical chemistry features were identified, and 162 MXene materials were screened without time-consuming DFT calculations. Several potential catalysts, such as Ta2W2C3, were predicted with good C-N coupling performance and verified by DFT calculations. The study incorporated machine learning methods for the first time to provide an efficient high-throughput screening method for selective C-N coupling electrocatalysts, which could be extended to a wider range of electrocatalytic reactions for green chemical production.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Linsen Huang, Pengtang Wang, Yunling Jiang, Kenneth Davey, Yao Zheng, Shi-Zhang Qiao
Summary: Electrooxidation of ethylene to produce oxygenates is a promising method that requires less energy and produces less CO2 compared to traditional thermal catalysis. However, the current electrooxidation reaction is limited to alkaline and neutral electrolytes, resulting in low cell energy efficiency.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Chemistry, Physical
Penghui Yan, Hong Peng, John Vogrin, Hesamoddin Rabiee, Zhonghua Zhu
Summary: Catalytic conversion of CO2 to renewable fuels and green chemicals is a promising approach, but the uncontrollable C-C coupling limits the selectivity of desired products. This review focuses on recent advancements in CO2 hydrogenation over zeolite-based catalysts, with an emphasis on the selectivity of targeted products. The role of zeolite properties and recent progress in designing and modifying zeolite materials for enhanced CO2 conversion and targeted product selectivity are comprehensively reviewed.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Multidisciplinary
Wei Sun, Wenxuan Wang, Changhong Yang, Xiaoning Li, Hang Li, Shifeng Huang, Zhenxiang Cheng
Summary: In this study, a two-dimensional van der Waals MnS2/CuInP2S6 multiferroic moire heterosuperlattice with tunable skyrmions through magnetoelectric coupling was designed using first-principles calculations and atomistic spin dynamics simulations. The moire patterns created by the inherent lattice mismatch between MnS2 and CuInP2S6 lead to modulated magnetic anisotropy and emerging magnetic skyrmions in MnS2. The magnetic skyrmions in MnS2 are strongly influenced by magnetoelectric coupling and can be tuned by the ferroelectric polarization of CuInP2S6. Furthermore, these magnetic skyrmions can be controlled by a pulsed current to move or freeze within the moire period under different ferroelectric polarization states of the CuInP2S6 layer. This work showcases the potential of a two-dimensional van der Waals moire heterosuperlattice with magnetoelectrically tuned magnetic skyrmions for future spintronic devices.
Article
Chemistry, Multidisciplinary
Qianru Chen, Junnan Hao, Shaojian Zhang, Zhihao Tian, Kenneth Davey, Shi-Zhang Qiao
Summary: This study reports a highly reversible sulfur anode that can fully convert sulfur in static aqueous batteries. By using Na+ as the charge carrier, the sulfur anode shows a low potential and near-theoretical capacity. The use of a scalable sulfonated polysulfone membrane helps suppress shuttle effects and improve battery stability.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Chun-Chuan Kao, Jiahao Liu, Chao Ye, Shao-Jian Zhang, Junnan Hao, Shi-Zhang Qiao
Summary: This study demonstrates the construction of zinc ion channels for fast and selective transportation, resulting in enhanced cycling stability of quasi-solid-state zinc-ion batteries. The confinement of gel electrolyte in intercalated halloysite nanotubes suppresses hydrogen evolution, zinc dendrite growth, and the formation of Zn4SO4(OH)6•χH2O. The assembled battery shows an exceptionally long cycle life of 8000 cycles at a high current density of 8 C.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Materials Science, Multidisciplinary
Xi Zhang, Shazed Aziz, Bidita Salahuddin, Zhonghua Zhu
Summary: Thermoresponsive hydrogels are intelligent materials that show rapid volumetric shape deformation in response to temperature change. They have great potential for various applications including soft robotics, medical devices, sensors, and smart textiles.
