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Science China Materials 2023年第12期66卷 4756-4763页

作者：谢高瞻曾明鉴张鑫罗安晟张静茹贺飞王欣胡杨王伟光谢燕楠李欢欢陈润锋陶冶 State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Jiangsu National Synergistic Innovation Center for Advanced Materials(SICAM)Nanjing University of Posts&TelecommunicationsNanjing 210023China State Key Laboratory of Luminescent Materials and Devices and Institute of Polymer Optoelectronic Materials and Devices South China University of TechnologyGuangzhou 510640China Songshan Lake Materials Laboratory Dongguan 523808China

稳定阴离子自由基的开发在获得高效激基复合物有机超长持续发光材料体系中起到重要作用,但仍然是一个艰巨的挑战.有鉴于此,我们通过提高阴离子自由基的稳定性和降低激基复合物中电荷分离后形成的自由基中间体的再复合速率来开发高效的... 详细信息

稳定阴离子自由基的开发在获得高效激基复合物有机超长持续发光材料体系中起到重要作用,但仍然是一个艰巨的挑战.有鉴于此,我们通过提高阴离子自由基的稳定性和降低激基复合物中电荷分离后形成的自由基中间体的再复合速率来开发高效的激基复合物有机长持续发光.我们所开发的激基复合物体系展现出了优异的绿色长持续发光,发光持续时间超过了180分钟.时间分辨的电子顺磁共振测试证实了超长持续发光的获得是因为开发的受体能形成稳定的阴离子自由基和低的自由基阴阳离子再复合速率.将我们所开发的材料应用到发光二极管中,能够制备出智能余辉照明器件.当关闭余辉照明器件的电压180秒后,纸上的英文单词还能被照亮并辨识出来.当前的工作不仅为开发受体材料来实现高效的激基复合物有机长持续发光提供了重要借鉴,也为有机长持续发光在节能余辉照明领域的应用开辟了道路.

关键词： organic long persistent luminescence exciplex acceptor radical anion afterglow lighting

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Colossal magnetoresistance and Fermi surface topology in the layered Zintl-phase compound YbAl2Si2

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Physical Review B 2024年第17期110卷 174408页

作者： Fang Tang Yang Chen Xunqing Yin Weiyao Zhao Lei Zhang Zhida Han Renkui Zheng Xiaoming Zhang Yong Fang Jiangsu Laboratory of Advanced Functional Materials School of Electronic and information Engineering Jiangsu Key Laboratory of Thin Films School of Physical Science and Technology School of Physics and Astronomy and Tsung-Dao Lee Institute Department of Materials Science and Engineering School of Materials Science and Engineering School of Physics and Materials Science

Considerable attention has been devoted to CaAl2Si2-type Zintl-phase compounds for their intriguing physical properties, particularly the complex interplay between band structures and magnetism. Herein we grow high-quality single crystals of nonmagnetic YbAl2Si2 and examine the physical properties, including resistivity, magnetoresistance, angular magnetoresistance, Hall resistivity, and band structures. This compound shows metallic properties and Fermi-liquid behaviors. Its resistivity under magnetic fields increases as per Kohler rule, with normalized magnetoresistance curves merging into one, ruling out potential metal-insulator-like transitions. Colossal magnetoresistance is observed at low temperatures. Hall resistivity analysis categorizes this compound as an uncompensated semimetal. Its angle dependence of the magnetoresistance and quantum oscillation frequencies demonstrate an anisotropy ratio of ∼1.26 for the Fermi surface. Theoretical calculations corroborate these findings, mapping Fermi surfaces with three hole pockets and an electron pocket. Considering both the experimental and theoretical results, the colossal and angle-dependent magnetoresistance may be ascribed to unequal carrier densities coupled with large differences in carrier mobilities and Fermi-surface anisotropy, respectively. These results imply YbAl2Si2 is a promising candidate to study the crucial effect of electronic properties on its charge transport.

关键词： Colossal magnetoresistance Fermi surface Magnetotransport Semimetals Single crystal materials Topological materials Density functional calculations Fermi liquid theory Resistivity measurements

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Hollow Gradient-Structured Iron-Anchored Carbon Nanospheres for Enhanced Electromagnetic Wave Absorption

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Nano-Micro Letters 2023年第1期15卷 144-160页

作者： Cao Wu Jing Wang Xiaohang Zhang Lixing Kang Xun Cao Yongyi Zhang Yutao Niu Yingying Yu Huili Fu Zongjie Shen Kunjie Wu Zhenzhong Yong Jingyun Zou Bin Wang Zhou Chen Zhengpeng Yang Qingwen Li Key Laboratory of Multifunctional Nanomaterials and Smart Systems Advanced Materials DivisionSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123JiangsuPeople’s Republic of China School of Science Nanchang Institute of TechnologyNanchang 330099JiangxiPeople’s Republic of China Division of Nanomaterials and Jiangxi Key Lab of Carbonene Materials Jiangxi Institute of NanotechnologyNanchang 330200JiangxiPeople’s Republic of China School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026AnhuiPeople’s Republic of China School of Materials Science and Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application School of Physical Science and TechnologySuzhou University of Science and TechnologySuzhou 215009People’s Republic of China School of Mechanical and Power Engineering Nanjing Tech UniversityNanjing 211800People’s Republic of China Henan Key Laboratory of Materials On Deep-Earth Engineering School of Materials Science and EngineeringHenan Polytechnic UniversityJiaozuo 454003People’s Republic of China College of Safety Science and Engineering Xi’an University of Science and TechnologyXi’an 710054People’s Republic of China

In the present paper,a microwave absorber with nanoscale gradient structure was proposed for enhancing the electromagnetic absorption *** inorganic-organic competitive coating strategy was employed,which can effectively adjust the thermodynamic and kinetic reactions of iron ions during the solvothermal *** a result,Fe nanoparticles can be gradually decreased from the inner side to the surface across the hollow carbon *** results reveal that it offers an outstanding reflection loss value in combination with broadband wave absorption and flexible adjustment ability,which is superior to other relative graded distribution structures and satisfied with the requirements of lightweight *** addition,this work elucidates the intrinsic microwave regulation mechanism of the multiscale hybrid electromagnetic wave *** excellent impedance matching and moderate dielectric parameters are exhibited to be the dominative factors for the promotion of microwave absorption performance of the optimized *** strategy to prepare gradient-distributed microwave absorbing materials initiates a new way for designing and fabricating wave absorber with excellent impedance matching property in practical applications.

关键词： Gradient structures Carbon nanospheres Electromagnetic wave absorption Impedance matching

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模板遗传实现纳微双尺度有序化碳单元及其在紧凑电容储能中的应用

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Science China Materials 2023年第2期66卷 587-596页

作者：卜永锋康勤姜文雅师仁兴周彦孙涛孙连山梁红玉 Institute for Energy Research Jiangsu UniversityZhenjiang 212013China Institute of Advanced Manufacturing and Modern Equipment Technology School of Mechanical EngineeringJiangsu UniversityZhenjiang 212013China School of Chemical Engineering Xi’an Key Laboratory of Special Energy MaterialsNorthwest UniversityXi’an 710069China

紧凑型超级电容器需要具有高体积能量和功率密度的高密度碳.然而,大多数传统的密度提升方案都是基于孔隙压缩,导致提高体积性能的同时过多地牺牲倍率性能.在此,本研究从碳单元有序堆叠的相反角度出发,提出了一种通过调节模板形貌在纳米... 详细信息

紧凑型超级电容器需要具有高体积能量和功率密度的高密度碳.然而,大多数传统的密度提升方案都是基于孔隙压缩,导致提高体积性能的同时过多地牺牲倍率性能.在此,本研究从碳单元有序堆叠的相反角度出发,提出了一种通过调节模板形貌在纳米和微米双尺度上压缩碳单元之间剩余孔隙的新策略(即一级碳纳米笼和二级由碳纳米笼组成的类碟状组装体的双尺寸排序).优化的纳微有序碳单元的电极密度高达1.08 g cm^(-3)(是商业活性炭的两倍);在离子液体中表现了创纪录的体积能量密度(79 Wh L^(-1))和功率容量(31 kW L^(-1)),以及出色的稳定性(>30,000次循环)和理想的库仑效率(~100%).即使在商业级电极厚度下,其可用的最大堆叠功率密度仍然高达12 kW L^(-1),远高于大多数报道的致密碳.如此出色的体积性能使其在同时需要高体积能量和功率密度的领域具有巨大潜力.

关键词：电容储能提升方案功率容量双尺度组装体功率密度商业级有序化

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A Generic Strategy to Create Mechanically Interlocked Nanocomposite/Hydrogel Hybrid Electrodes for Epidermal Electronics

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Nano-Micro Letters 2024年第5期16卷 120-133页

作者： Qian Wang Yanyan Li Yong Lin Yuping Sun Chong Bai Haorun Guo Ting Fang Gaohua Hu Yanqing Lu Desheng Kong College of Engineering and Applied Sciences National Laboratory of Solid State Microstructureand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210023People’s Republic of China State Key Laboratory of Analytical Chemistry for Life Science and Jiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjing 210023People’s Republic of China College of Chemical Engineering and Technology Engineering Research Center of Seawater Utilization Technology of Ministry of EducationState Key Laboratory of Reliability and Intelligence of Electrical EquipmentHebei University of TechnologyTianjin 300130People’s Republic of China Key Laboratory of Intelligent Optical Sensing and Manipulation Nanjing UniversityNanjing 210093People’s Republic of China

Stretchable electronics are crucial enablers for next-generation wearables intimately integrated into the human *** the primary compliant conductors used in these devices,metallic nanostructure/elastomer composites often struggle to form conformal contact with the textured *** electrodes have been consequently developed based on conductive nanocomposite and soft hydrogels to establish seamless skin-device ***,chemical modifications are typically needed for reliable bonding,which can alter their original *** overcome this limitation,this study presents a facile fabrication approach for mechanically interlocked nanocomposite/hydrogel hybrid *** this physical process,soft microfoams are thermally laminated on silver nanowire nanocomposites as a porous interface,which forms an interpenetrating network with the *** microfoam-enabled bonding strategy is generally compatible with various *** resulting interlocked hybrids have a 28-fold improved interfacial toughness compared to directly stacked *** electrodes achieve firm attachment to the skin and low contact impedance using tissue-adhesive *** have been successfully integrated into an epidermal sleeve to distinguish hand gestures by sensing mus-cle *** nanocomposite/hydrogel hybrids reported here offer a promising platform to combine the benefits of both materials for epidermal devices and systems.

关键词： Stretchable electronics Epidermal electronics Silver nanowire Conductive nanocomposites Hydrogel

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Recent progress on surface chemistryⅠ:Assembly and reaction

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Chinese Chemical Letters 2024年第12期35卷 43-94页

作者： Xin Li Zhen Xu Donglei Bu Jinming Cai Huamei Chen Qi Chen Ting Chen Fang Cheng Lifeng Chi Wenjie Dong Zhenchao Dong Shixuan Du Qitang Fan Xing Fan Qiang Fu Song Gao Jing Guo Weijun Guo Yang He Shimin Hou Ying Jiang Huihui Kong Baojun Li Dengyuan Li Jie Li Qing Li Ruoning Li Shuying Li Yuxuan Lin Mengxi Liu Peinian Liu Yanyan Liu Jingtao Lü Chuanxu Ma Haoyang Pan JinLiang Pan Minghu Pan Xiaohui Qiu Ziyong Shen Shijing Tan Bing Wang Dong Wang Li Wang Lili Wang Tao Wang Xiang Wang Xingyue Wang Xueyan Wang Yansong Wang Yu Wang Kai Wu Wei Xu Na Xue Linghao Yan Fan Yang Zhiyong Yang Chi Zhang Xue Zhang Yang Zhang Yao Zhang Xiong Zhou Junfa Zhu Yajie Zhang Feixue Gao Yongfeng Wang Center for Carbon-based Electronics and Key Laboratory for the Physics and Chemistry of Nanodevices School of ElectronicsPeking UniversityBeijing 100871China Spin-X Institute School of MicroelectronicsSouth China University of TechnologyGuangzhou 511442China School of Materials and Energy Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage DevicesGuangdong University of TechnologyGuangzhou 510006China Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093 China i-Lab CAS Key Laboratory of Nanophotonic Materials and DevicesSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing University of Posts and TelecommunicationsNanjing 210023China Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Institute of Physics&University of Chinese Academy of Sciences Beijing 100190China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China College of Chemistry Beijing Normal UniversityBeijing 100875China Beijing National Laboratory for Molecular Sciences(BNLMS) College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China School

Surface chemistry focuses on the investigation of the adsorption,migration,assembly,activation,reaction,and desorption of atoms and molecules at *** chemistry plays the pivotal roles in both fundamental science and applied *** review will summarize the recent progresses on surface assembly,synthesis and catalysis investigated mainly by scanning tunneling microscopy and atomic force *** assemblies of water and small biomolecules,construction of Sierpin′ski triangles and surface chirality are ***-surface synthesis of conjugated carbo-and heterocycles and other kinds of carbon nanostructures are *** model catalysis,including single-atom catalysis and electrochemical catalysis,are discussed at the single-atom level.

关键词： Surface chemistry Assembly Surface synthesis Catalysis on surface Surface electrochemical processes

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Sulfur-Doped Enhanced Znmn2o4 Spinel for High-Capacity Zinc-Ion Batteries: Facilitating Charge Transfer

SSRN

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SSRN 2024年

作者： Yuan, Jingjing Xi, Wenyong Qiao, Yifan Li, Yifan He, Junjie Xu, Hui Zhang, Wenyao He, Guangyu Chen, Haiqun Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation Center Changzhou University Changzhou213164 China Key Laboratory for Soft Chemistry and Functional Materials Ministry of Education Nanjing University of Science and Technology Nanjing210094 China

ZnMn2O4 spinel is considered a promising cathode material for zinc-ion batteries due to its superior Zn2+ storage capability. However, the widespread utilization of ZnMn2O4 spinel as a high-capacity cathode material is impeded by challenges such as its insufficient electrical conductivity. To tackle this limitation, we have employed a sulfur doping approach by substituting sulfur for oxygen atoms within the ZnMn2O4 lattice structure. After theoretical calculation, the charge exchange between metal Zn/Mn and surrounding coordinated atoms is enhanced after sulfur doping, the charge transfer increases and the conductivity is improved. As a result, the sulfur-doped ZnMn2O4 spinel effectively enhances the electrical conductivity, improving its electrochemical discharge capacity. Furthermore, the results revealed that a doping level of 20% provided the greatest enhancement in capacitance, achieving a specific capacity of 220.1 mAh g-1. However, when the sulfur doping level is excessively high, an excess of sulfur introduces impurity energy levels and increases charge transfer resistance among other adverse factors, thereby resulting in adverse effects that degrade the electrochemical performance of the material and lead to poorer outcomes. Therefore, when modifying ZnMn2O4 cathode materials, it is crucial to strike a balance between different factors to achieve optimal performance. © 2024, The Authors. All rights reserved.

关键词： Manganese compounds

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The exploration of quantum dot-molecular beacon based MoS_(2) fluorescence probing for myeloma-related Mirnas detection

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Bioactive Materials 2022年第11期7卷 360-368页

作者： Jing Jing Wang Ying Liu Zhou Ding Le Zhang Caiqin Han Changchun Yan Eric Amador Liqin Yuan Ying Wu Chunyuan Song Ying Liu Wei Chen Jiangsu Key Laboratory of Advanced Laser Materials and Devices School of Physics and Electronic EngineeringJiangsu Normal UniversityXuzhou221116China Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)Nanjing University of Posts&TelecommunicationsNanjing210023China Department of Physics The University of Texas at ArlingtonArlingtonTX76019-0059USA Department of General Surgery The Second Xiangya HospitalCentral South UniversityChangShaHu’nan410011China Medical Technology Research Centre Chelmsford CampusAnglia Ruskin UniversityChelmsfordCM11SQUK

Highly sensitive and reliable detection of multiple myeloma remains a major challenge in liquid biopsy. Herein, for the first time, quantum dot-molecular beacon (QD-MB) functionalized MoS_(2) (QD-MB @MoS_(2)) fluorescent probes were designed for the dual detection of multiple myeloma (MM)-related miRNA-155 and miRNA-150. The results indicate that the two probes can effectively detect miRNA-155 and miRNA-150 simultaneously with satisfactory recovery rates, and the limit of detections (LODs) of miRNA-155 and miRNA-150 in human serum are low to 7.19 fM and 5.84 fM, respectively. These results indicate that our method is the most sensitive detection so far reported and that the designed fluorescent probes with signal amplification strategies can achieve highly sensitive detection of MM-related miRNAs for MM diagnosis.

关键词： Multiple myeloma miRNA-155 miRNA-150 Duplex-specific nuclease(DSN) Quantum dot MoS_(2) Molecular beacon

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Large upper critical fields and dimensionality crossover of superconductivity in the infinite-layer nickelate La0.8Sr0.2NiO2

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Physical Review B 2023年第22期107卷 L220503-L220503页

作者： Wei Wei Wenjie Sun Yue Sun Yongqiang Pan Gangjian Jin Feng Yang Yueying Li Zengwei Zhu Yuefeng Nie Zhixiang Shi Department of Physics Southeast University Nanjing 211189 China National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional Materials College of Engineering and Applied Sciences Nanjing University Nanjing 210093 People's Republic of China Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 People's Republic of China Key Laboratory of Materials Physics Institute of Solid State Physics Chinese Academy of Sciences Hefei 230031 China School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China School of Physics Huazhong University of Science and Technology Wuhan 430074 China Wuhan National High Magnetic Field Center and School of Physics Huazhong University of Science and Technology Wuhan 430074 China

The recently emerging superconductivity in infinite-layer nickelates with the isostructural and isoelectronic characteristics of cuprates provides a new platform to explore the pairing mechanism of high-temperature superconductors. In this work, we studied the upper critical field (Hc2) of a high-quality La0.8Sr0.2NiO2 thin film with superconducting transition temperature, Tconset=18.8 K, using high magnetic field up to 56 T. A very large Hc2, ∼40 T for H∥c and ∼52 T for H⊥c, was confirmed, which suggests that infinite-layer nickelates also have great application potential. The anisotropy of Hc2 monotonically decreases from ∼10(γ=Hc2ab/Hc2c) near Tc to ∼1.5 at 2 K. Angle dependence of Hc2 confirms the crossover of superconductivity from two-dimensional to three-dimensional as the temperature decreases. We discussed that the interstitial orbital effect causes the weakening of anisotropy. The observed abnormal upturning of Hc2 at low temperatures is found to be a universal behavior independent of film quality and rare-earth elements. Therefore, it should not be the Fulde-Ferrell-Larkin-Ovchinnikov state due to the fact that it is in the dirty limit and insensitive to disorder.

关键词： High magnetic fields Multiband superconductivity Superconductivity High-temperature superconductors Type-II superconductors Unconventional superconductors Critical field Resistivity measurements

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Interface terminal group regulated organic phototransistors with tunable persistent and switchable photoconductivity

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Science China Chemistry 2022年第12期65卷 2567-2575页

作者： Di Xue Yingying Zhang Weijie Gong Yao Yin Zi Wang Lizhen Huang Lifeng Chi Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou215123China Gusu Laboratory of Materials Suzhou215123China Macao Institute of Materials Science and Engineering(MIMSE) MUST-SUDA Joint Research Center for Advanced Functional MaterialsMacao University of Science and TechnologyTaipaMacao999078China

With both light detection and intrinsic amplification functions,organic phototransistors have demonstrated promising applications,including photodetection and *** achieve excellent photoresponse and superior photogain,a common and effective strategy is to modulate the trapping effect with the purpose of reducing recombination or prolonging the lifetime of the photogenerated charge ***,introducing trapping sites delicately is challenging and might sacrifice the response rate together with a typical persistent ***,we demonstrate a facile strategy for achieving high photo-responsive organic phototransistors with both persistent and switchable photoconductivity features via interface terminal group *** varying the terminate groups of self-assembled monolayer(SAMs)from the strong electron withdrawing group-F,neutral−CH_(3) to electron donating−NH_(2) on the dielectric surface,we realize both minority carrier trapping and majority carrier trapping in the organic phototransistor based on the C8-BTBT active *** electron withdrawing effect of F significantly enhances the minority carrier trapping process and yields a high photoresponsivity with a long-lasting persistent *** contrast,the electron donating group−NH_(2) with a distinct majority carrier trapping ability causes switchable photoconductivity so that the photocurrent can rise pronouncedly and fully decay along with light on/***,both cases can deliver high performance with photoresponsivities higher than 104 A W^(−1) together with a photosensitivity in the level of 107 and a detectivity of approximately 10^(15)–10^(16) *** a tunable,excellent photoresponse property enables the convenient exploration of organic phototransistors to satisfy different application requirements.

关键词： organic phototransistor surface modification trapping persistent photoconductivity

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