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p‑Type Two‑Dimensional Semiconductors:From Materials preparation to Electronic applications

纳微快报:英文版 2023年第12期15卷 242-270页

作者： Lei Tang Jingyun Zou Songshan Lake Materials laboratory Dongguan 523808GuangdongPeople’s Republic of China 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 215009JiangsuPeople’s Republic of China

Two-dimensional(2D)materials are regarded as promising candidates in many applications,including electronics and optoelectronics,because of their superior properties,including atomic-level thickness,tunable bandgaps,large specific surface area,and high carrier mobility.In order to bring 2D materials from the laboratory to industrialized applications,materials preparation is the first prerequisite.Compared to the n-type analogs,the family of p-type 2D semiconductors is relatively small,which limits the broad integration of 2D semiconductors in practical applications such as complementary logic circuits.So far,many efforts have been made in the preparation of p-type 2D semiconductors.In this review,we overview recent progresses achieved in the preparation of p-type 2D semiconductors and highlight some promising methods to realize their controllable preparation by following both the top-down and bottom-up strategies.Then,we summarize some significant application of p-type 2D semiconductors in electronic and optoelectronic devices and their superiorities.In end,we conclude the challenges existed in this field and propose the potential opportunities in aspects from the discovery of novel p-type 2D semiconductors,their controlled mass preparation,compatible engineering with silicon production line,high-κdielectric materials,to integration and applications of p-type 2D semiconductors and their heterostructures in electronic and optoelectronic devices.Overall,we believe that this review will guide the design of preparation systems to fulfill the controllable growth of p-type 2D semiconductors with high quality and thus lay the foundations for their potential application in electronics and optoelectronics.

关键词： Two-dimensional materials p-type semiconductor Top-down Bottom-up Electronics Optoelectronics

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Recent advances in the application of MXenes for neural tissue engineering and regeneration

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Neural Regeneration Research 2024年第2期19卷 258-263页

作者： Menghui Liao Qingyue Cui Yangnan Hu Jiayue Xing Danqi Wu Shasha Zheng Yu Zhao Yafeng Yu Jingwu Sun Renjie Chai State Key laboratory of Digital Medical Engineering Department of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologyAdvanced Institute for Life and HealthJiangsu Province High-Tech Key Laboratory for Bio-Medical ResearchSoutheast UniversityNanjingJiangsu ProvinceChina Co-Innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Oto-Rhino-Laryngology West China HospitalSichuan UniversityChengduSichuan ProvinceChina First Affiliated Hospital of Soochow University SuzhouJiangsu ProvinceChina Department of Otolaryngology-Head and Neck Surgery The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina Department of Otolaryngology Head and Neck Surgery Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuan ProvinceChina Institute for Stem Cell and Regeneration Chinese Academy of SciencesBeijingChina Beijing Key laboratory of Neural Regeneration and Repair Capital Medical UniversityBeijingChina

Transition metal carbides and nitrides(MXenes)are crystal nanomaterials with a number of surface functional groups such as fluorine,hydroxyl,and oxygen,which can be used as carriers for proteins and drugs.MXenes have excellent biocompatibility,electrical conductivity,surface hydrophilicity,mechanical properties and easy surface modification.However,at present,the stability of most MXenes needs to be improved,and more synthesis methods need to be explored.MXenes are good substrates for nerve cell regeneration and nerve reconstruction,which have broad application prospects in the repair of nervous system injury.Regarding the application of MXenes in neuroscience,mainly at the cellular level,the long-term in vivo biosafety and effects also need to be further explored.This review focuses on the progress of using MXenes in nerve regeneration over the last few years;discussing preparation of MXenes and their biocompatibility with different cells as well as the regulation by MXenes of nerve cell regeneration in two-dimensional and three-dimensional environments in vitro.MXenes have great potential in regulating the proliferation,differentiation,and maturation of nerve cells and in promoting regeneration and recovery after nerve injury.In addition,this review also presents the main challenges during optimization processes,such as the preparation of stable MXenes and long-term in vivo biosafety,and further discusses future directions in neural tissue engineering.

关键词： hydrogels MXenes nerve regeneration neural cells neural stem cells organoids spiral ganglion neurons

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High-yield preparation of robust gold nanoshells on silica nanorattles with good biocompatiblity

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Science Bulletin 2016年第4期61卷 282-291页

作者： Changhui Fu Chaofeng He Longfei Tan Shunhao Wang Lu Shang Linlin Li Xianwei Meng Huiyu Liu laboratory of controllable preparation and application ofnanomaterials Technical Institute of Physics and ChemistryChinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049China Beijing Institute of Nanoenergy and Nanosystems ChineseAcademy of Sciences Beijing 100083 China National Center for Nanoscience and Technology (NCNST) Beijing 100083 China Beijing Key laboratory of Bioprocess College of Life Scienceand Technology Beijing University of Chemical TechnologyBeijing 100029 China

Although gold nanoshells are widely considered as one of the promising photothermal nanomaterials used for biomedicine, the high cost, low yield and poor stability severely limit their potential application in clinical trials.Herein, robust gold nanoshells on silica nanorattles(GSNs)were easily prepared in a high yield by an improved seedmediated method employing polyvinylpyrrolidone(PVP) as a stabilizing and capping agent. The present method is very simple, effective and reproducible and can well control the growth process of gold nanoshells. The as-prepared GSNs have a narrow size distribution(preparation method will remarkably promote the use of gold nanoshells for biomedicine.

关键词：金纳米颗粒生物相容性制备方法二氧化硅产量低聚乙烯吡咯烷酮结构稳定性稳健

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A chemically stable nanoporous coordination polymer with fixed and free Cu^(2+)ions for boosted C_(2)H_(2)/CO_(2)separation

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Nano Research 2021年第2期14卷 546-553页

作者： Si Chen Nibedita Behera Chao Yang Qiubing Dong Baishu Zheng Yingying Li Qi Tang Zhaoxu Wang Yanqing Wang Jingui Duan State Key laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech Universityy Nanjing 211816China Key laboratory of Theoretical Organic Chemistry and Function Molecule of Ministry of Education Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine PolymersHunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and ConversionSchool of Chemistry and Chemical EngineeringHunan University of Science and TechnologyXiangtan 411201China School of Chemistry and Environmental Engineering Yancheng Teachers UniversityYancheng 224002China

Safely and highly selective acetylene(C_(2)H_(2))capture is a great challenge,because of its highly explosive nature,as well as its nearly similar molecule size and boiling point toward the main impurity of carbon dioxide(CO_(2)).Adsorption separation has shown a promising future.Herein,a new nanoporous coordination polymer(PCP)adsorbent with fixed and free Cu ions(termed NTU-66-Cu)was prepared through post-synthetic approach via cation exchanging from the pristine NTU-66,an anionic framework with new 3,4,6-c topology and two kinds of cages.The NTU-66-Cu shows significantly improved C_(2)H_(2)/CO_(2)selectivity from 6 to 32(v/v:1/1)or 4 to 4_(2)(v/v:1/4)at low pressure under 298 K,along with enhanced C_(2)H_(2)capacity(from 89.22to 111.53 cm^(3)·g^(-1)).More importantly,this observation was further validated by density functional theory(DFT)calculations and breakthrough experiments under continuous and dynamic conditions.Further,the excellent chemical stability enables this adsorbent to achieve recycle C_(2)H_(2)/CO_(2)separation without loss of C_(2)H_(2)capacity.

关键词： nanoporous coordination polymer high porosity new topology post-synthetic approach C_(2)H_(2)/CO_(2)separation

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Superoxide dismutase mimetic ability of Mn-doped ZnS QDs

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Chinese Chemical Letters 2018年第12期29卷 1865-1868页

作者： Xiangling Ren Mingqian Wang Xing He Zheng Li Jing Zhang Wei Zhang Xudong Chen Hong Ren Xianwei Meng laboratory of controllable preparation and application of nanomaterials Key Laboratory of CryogenicsTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China First Affiliated Hospital of Southern University of Science and Technology Shenzhen People's Hospital&Shenzhen Interventional Medical Engineering Research and Development CenterShenzhen 518020China Beijing University of Chemical Technology Beijing 100029China Beijing Technology&Business University Beijing Higher Institution Engineering Research Center of Food Additives and IngredientsBeijing Key Laboratory of Flavor ChemistryBeijing Laboratory for Food Quality and SafetyBeijing 100048China University of Chinese Academy of Sciences Beijing 100049China

Superoxide dismutase(SOD) is an important antioxidant enzyme in the body. SOD has special physiological activity and is the primary substance for scavenging free radicals in living organisms.However, the expensive and complex extraction processes, low SOD yield, as well as difficult to store at room temperature have seriously hindered its application pace. Herein, the enzyme mimetic function of Mn-doped ZnS quantum dots(QDs) was discovered. The improved Marklund and McCord method both showed that Mn-doped ZnS QDs possess intrinsic SOD-like activity. The effects of temperature and pH on the mimetic enzyme activity of Mn-doped ZnS QDs have been investigated compared with SOD enzymes.The low cost and easy to synthesize white Mn-doped ZnS QDs with good biocompatibility are expected to be used as a new type of SOD nanozymes in the biology-relevant fields.

关键词： Mn-doped ZnS QDs Superoxide dismutase Nanozymes Marklund method Pyrogallol

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Biomimetic Superhydrophobic Surfaces with Transition Metals and Their Oxides： A Review

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Journal of Bionic Engineering 2017年第3期14卷 401-439页

作者： Xiaoyu Gao Zhiguang Guo Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of EducationKey laboratory for the Green preparation and application of Functional Materials Hubei University Wuhan 430062 China State Key laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China

Transition metals and their oxide materials have been widely employed to fabricate superhydrophobic surfaces, not only because of their surface topography with controllable microstructures leading to water-repellence, diverse adhesion even tun- able wettability, but also due to a variety of special properties like optical performance, magnetism, anti-bacterial, transparency and so on. At the meantime, biomimetic superhydrophobic surfaces have attracted great interest from fabricating hierarchical micro-/nano-structures inspired by nature to imitate creature＇s properties and many potential applications, including self-cleaning, antifogging, antireflection, low drag and great stability and durability. In this review, natural surfaces and biomimetic materials with special wettability are introduced by classification according to the similar microstructure of mor- phology, like array structure, sheet overlapped structure, high density hairs and seta shaped structure. Not only do we exhibit their special performances, but also try to find out the true reasons behind the phenomenon. Then, the recent progress of a series of superhydrophobic transition mental and their oxide materials, including TiO2, ZnO, Fe304, CuO, Ag, Au and so on, is pre- sented with a focus on fabricating methods, microstructures, wettability, and other properties. As followed, these superhydro- phobic surfaces can be applied in many fields, such as oil/water separation, self-cleaning, photo-controlled reversible wet- tability, surface-enhanced Raman scattering, antibacterial, anticorrosion, and synthesis of various applications. However, few of them have been applied in practical life. Hence, we discuss the remaining challenges at present and the development tendency in future at the end of this article. This review aims to present recent development of transition metals and their oxides applied in biomimetic superhydrophobic surfaces about fabrication, microstructure, water repellence, various properties, and potential applications.

关键词： biomimetic superhydrophobic transition metals metal oxides

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Biomimetic Janus Paper with controllable Swelling for Shape Memory and Energy Conversion

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Journal of Bionic Engineering 2019年第1期16卷 1-12页

作者： Pan Tian Zhiguang Guo Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key laboratory for the Green preparation and application of Functional Materials Hubei UniversityWuhan 430062China State Key laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou 730070China

Being inspired by the "seismonastic reaction"of Mimosa pudica,an asymmetric swelling system was constructed to induce the controllable directional deformation of filter paper.In this work,multifunctional biomimetic Janus paper was facilely fabricated via depositing poly(vinylidene fluoride)(PVDF)on one side of Qualitative Filter Paper (QFP),the permeation of polymer solutions within filter paper was well controlled during fabrication.The wetting and swelling behavior of the prepared Janus paper were detected.The Janus paper showed controllable swelling-induced deformations in water.Both the degree and orientation of the deformation were fully investigated.On the one hand,the degree of deformation depends on the gradient wettability and hygroscopicity of the Janus paper,on the other hand,the orientation of deformation is related to the storage and release of stress.Additionally,the steady deformation during swelling endows the Janus paper with novel shape memory property both under idling and loading conditions.The Janus paper was also applied to achieve reversible energy conversion from the swelling potential energy to mechanical potential energy.

关键词： Janus paper swelling shape memory energy conversion

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SO_(2)-Insertion induced enantioselective oxysulfonylation to access β-chiral sulfones with quaternary carbon stereocenters

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Science China Chemistry 2024年第3期67卷 908-913页

作者： Jun Zhang Xuefeng Wang Peiqi Wang Jiayuan Fang Shaoyu Li Jie Wu School of Pharmaceutical and Chemical Engineering&Institute for Advanced Studies Taizhou UniversityShanghai 200438China Department of Chemistry Fudan UniversityShanghai 200438China State Key laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007China

β-Chiral sulfones are structural motifs widely found in natural products and bioactive molecules, while also serving as important intermediates for the synthesis of valuable chiral scaffolds. In contrast to the rapid growth of sulfur dioxide insertion chemistry over the last decade, enantioselective catalytic variants for accessing β-chiral sulfones, especially those bearing a quaternary carbon stereocenter, remain rare. Herein, we report an enantioselective copper/bisoxazoline catalyzed oxysulfonylation of alkenes to yield isoxazolinyl-containing β-chiral sulfones bearing quaternary carbon stereocenters with moderate to excellent yields and up to 96:4 er. The advantage and irreplaceability of this sulfur dioxide insertion catalytic system have been demonstrated by achieving transformations clearly unavailable with the previously reported sulfonyl chloride system. Additionally,the recoverability of the new-developed bisoxazoline ligand L9 and its reusability without any erosion of the catalytic activity and enantioselectivity further demonstrate the usefulness of the protocol.

关键词： β-chiral sulfones sulfur dioxide insertion oxysulfonylation copper catalysis enantioselectivity

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Dynamic Pendulum Effect of an Exceptionally Flexible Pillared-Layer Metal-Organic Framework

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Chinese Journal of Chemistry 2021年第10期39卷 2718-2724页

作者： Hao-Long Zhou Jie Bai Xiao-Yun Tian Zong-Wen Mo Xiao-Ming Chen MOE Key laboratory of Bioinorganic and Synthetic Chemistry School of ChemistrySun Yat-Sen UniversityGuangzhouGuangdong510275 China Department of Chemistry ond Key laboratory for preparation and application of Ordered Structural Materials of Guangdong Province Shantou UniversityShantouGuangdong 515063China

Main observation and conclusion Magnifying the controllable directional motions of molecular machines to the macroscopic levels is a significant topic for chemists.Flexible metal–organic frameworks with long-range order and responsive structural transformation under external stimuli may be an appropriate platform for achieving the target.By taking advantage of the single-crystal to single-crystal manner of soft porous crystals,we utilize single-crystal X-ray diffraction to directly observe the dynamic structural inversion of a new three-fold interpenetrated pillared-layer metal-organic framework[Co(edba)(bpy)](MCF-83,H2edba=4,4’-(ethyne-1,2-diyl)dibenzoic acid,bpy=4,4’-bipyridine).More interestingly,the dynamic inversions of the pillars and layers are selectively guest-controllable and independent,allowing precise control of the directional shape changes,which is the key of constructing intelligent materials to accomplish a complex task.The mechanism is further studied by combining the X-ray diffraction analyses,sorption measurements and molecular simulations.

关键词： Porous coordination polymers Metal-organic frameworks Structural transformation X-ray diffraction Adsorption

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具有三维传输通道的化学键合Ti_(3)C_(2) MXene@C复合材料促进混合电容器中的锂离子存储

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Science China Materials 2023年第3期66卷 944-954页

作者：冯敏王万里胡兆伟范呈赵晓冉王朋李慧芳杨磊王晓君刘治明 College of Electromechanical Engineering Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-MaterialsQingdao University of Science&TechnologyQingdao 266061China Research Center for Intelligent and Wearable Technology College of Textiles and ClothingQingdao UniversityQingdao 266071China Key laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071China

锂离子电容器(LICs)是一种很有前途的储能装置,因为它们同时具有锂离子电池的高能量密度和超级电容器的高功率密度的特点.然而,由于锂离子电容器中阳极和阴极之间电化学反应动力学的不匹配使得探索具有快速离子扩散和电子转移通道的阳... 详细信息

锂离子电容器(LICs)是一种很有前途的储能装置,因为它们同时具有锂离子电池的高能量密度和超级电容器的高功率密度的特点.然而,由于锂离子电容器中阳极和阴极之间电化学反应动力学的不匹配使得探索具有快速离子扩散和电子转移通道的阳极材料面临挑战.在此,通过静电纺丝策略将具有可控末端基团的二维Ti_(3)C_(2)MXene引入一维碳纳米纤维中,形成三维导电网络.在这种Ti_(3)C_(2)MXene和碳基复合材料(称为KTi-400@CNFs)中,二维纳米片结构赋予了Ti_(3)C_(2)MXene更多Li+存储活性位点,而碳骨架则有利于提高复合材料的导电性.更值得一提的是,在Ti_(3)C_(2)MXene和碳骨架的界面上形成了Ti–O–C键.复合材料中的这种化学键为电子的快速传输和离子在层与层之间纵向的快速扩散建立了桥梁.因此,优化后的KTi-400@CNFs复合材料在电流密度为5 A g-1的情况下,500次循环后仍保持235 mA h g-1的良好容量.由KTi-400@CNFs//AC组成的锂离子电容器实现了高能量密度(114.3 W h kg-1)和高功率密度(12.8 kW kg-1).KTi-400@CNFs的这种独特结构和优异的电化学性能为二维材料制备提供了参考.

关键词：锂离子电容器锂离子电池超级电容器混合电容器阳极材料高能量密度碳基复合材料电化学性能

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