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Unlocking the potential of amorphous calcium carbonate: A star ascending in the realm of biomedical application

Acta Pharmaceutica Sinica B 2024年第2期14卷 602-622页

作者： Han Liu Zhiyang Wen Zihan Liu Yanfang Yang Hongliang Wang Xuejun Xia Jun Ye Yuling Liu State key laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China beijing key laboratory of Drug Delivery Technology and Novel Formulation Institute of Materia MedicaChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China

Calcium-based biomaterials have been intensively studied in the field of drug delivery owing to their excellent biocompatibility and ***-based materials can also deliver contrast agents,which can enhance real-time imaging and exert a Ca^(2+)-interfering therapeutic *** on these characteristics,amorphous calcium carbonate(ACC),as a brunch of calcium-based biomaterials,has the potential to become a widely used *** functional ACC can be either discovered in natural organisms or obtained by chemical synthesis However,the standalone presence of ACC is unstable in *** are required to be used as stabilizers or core-shell structures formed by permeable layers or lipids with modified molecules constructed to maintain the stability of ACC until the ACC carrier reaches its *** has high chemical instability and can produce biocompatible products when exposed to an acidic condition in vivo,such as Ca^(2+) with an immune-regulating ability and CO_(2) with an imaging-enhancing *** to these characteristics,ACC has been studied for selfsacrificing templates of carrier construction,targeted delivery of oncology drugs,immunomodulation,tumor imaging,tissue engineering,and calcium *** in this paper has been placed on the origin,structural features,and multiple applications of ***,ACC faces many challenges in clinical translation,and long-term basic research is required to overcome these *** hope that this study will contribute to future innovative research on ACC.

关键词： Amorphous calcium carbonate Drugdelivery system Nanoparticle Acid sensitivity Water instability,Tumortherapy Tissue engineering Calcium supplement

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界面工程与等离激元效应协同作用增强的ZnO微米线同质结自驱动紫外探测器

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Science China materials 2024年第3期67卷 842-851页

作者：唐楷沙树林万鹏翟亚林阚彩侠施大宁姜明明 College of Physics MIIT Key Laboratory of Aerospace Information Materials and PhysicsKey Laboratory for Intelligent Nano Materials and DevicesNanjing University of Aeronautics and AstronauticsNanjing 211106China

高灵敏度的自驱动紫外探测器在许多应用中都大有可为.本研究提出了一种一维ZnO基同结光电探测器,它包括表面覆盖着Ag纳米线的锑掺杂ZnO微米线(AgNWs@ZnO:Sb MW)、MgO缓冲纳米层和ZnO薄膜.该探测器在0 V偏压下对紫外光非常敏感,其性能参... 详细信息

高灵敏度的自驱动紫外探测器在许多应用中都大有可为.本研究提出了一种一维ZnO基同结光电探测器,它包括表面覆盖着Ag纳米线的锑掺杂ZnO微米线(AgNWs@ZnO:Sb MW)、MgO缓冲纳米层和ZnO薄膜.该探测器在0 V偏压下对紫外光非常敏感,其性能参数包括约7个量级的开关比、292.2 mA W^(-1)的响应度、6.9×10^(13)Jones的比探测率,以及微秒量级的快速响应速度(上升时间16.4μs,下降时间465.1μs).特别是10μW cm^(-2)的微弱紫外光时接近99.3%的外量子效率.此外,本文系统研究了MgO纳米薄膜和表面修饰AgNWs对探测器件性能增强的机理.作为自驱动光接收器,该光电二极管被进一步集成到能够实时传输信息的紫外通信系统中.此外,基于AgNWs@p-ZnO:Sb MW/i-MgO/n-ZnO的同质结9×9阵列显示出均匀的光响应分布,可用作具有良好空间分辨率的成像传感器.这项研究有望为设计高性能紫外光检测器提供一条具有低功耗和可大规模建造的途径.

关键词： interface engineering p-type ZnO:Sb microwire selfpowered photodetector imaging sensor UV optical communication plasmonic effect

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A general synthetic strategy to monolayer graphene

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Nano Research 2018年第6期11卷 3088-3095页

作者： Youqi Zhu Tai Cao Chuanbao Cao Xilan Ma Xingyan Xu Yadong Li Research Center of materials Science and beijing key laboratory of construction Tailorable advanced functional materials and green applications Beijing Institute of Technology Beijing 100081 China Department of Chemistry Tsinghua University Beijing 100084 China

The emergence and establishment of new techniques for material fabrication are of fundamental importance in the development of materials science. Thus, we herein report a general synthetic strategy for the preparation of monolayer graphene. This novel synthetic method is based on the direct solid-state pyrolytic conversion of a sodium carboxylate, such as sodium gluconate or sodium citrate, into monolayer graphene in the presence of Na2CO3. In addition, gram-scale quantities of the graphene product can be readily prepared in several minutes. Analysis using Raman spectroscopy and atomic force microscopy clearly demonstrates that the pyrolytic graphene is composed of a monolayer with an average thickness of - 0.50 nm. Thus, the present pyrolytic conversion can overcome the issue of the low monolayer contents （i.e., 1 wt.%-12 wt.%） obtained using exfoliation methods in addition to the low yields of chemical vapor deposition methods. We expect that this novel technique may be suitable for application in the preparation of monolayer graphene materials for batteries, supercapacitors, catalysts, and sensors.

关键词： monolayer graphene pyrolytic conversion sodium carboxylate bulk production

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Bottom-up construction of low-dimensional perovskite thick films for high-performance X-ray detection and imaging

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Light(Science & applications) 2024年第9期13卷 1809-1819页

作者： Siyin Dong Zhenghui Fan Wei Wei Shujie Tie Ruihan Yuan Bin Zhou Ning Yang Xiaojia Zheng Liang Shen Sichuan Research Center of New materials Institute of Chemical MaterialsChina Academy of Engineering PhysicsShuangliuChengduChina State key laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringInternational Center of Future ScienceJilin UniversityChangchunChina

Quasi-two-dimensional(Q-2D)perovskite exhibits exceptional photoelectric properties and demonstrates reduced ion migration compared to 3D perovskite,making it a promising material for the fabrication of highly sensitive and stable X-ray ***,achieving high-quality perovskite films with sufficient thickness for efficient X-ray absorption remains ***,we present a novel approach to regulate the growth of Q-2D perovskite crystals in a mixed atmosphere comprising methylamine(CH3NH2,MA)and ammonia(NH3),resulting in the successful fabrication of high-quality films with a thickness of hundreds of ***,we build a heterojunction X-ray detector by incorporating the perovskite layer with titanium dioxide(TiO2).The precise regulation of perovskite crystal growth and the meticulous design of the device structure synergistically enhance the resistivity and carrier transport properties of the X-ray detector,resulting in an ultrahigh sensitivity(29721.4μC Gyair−1 cm−2)for low-dimensional perovskite X-ray detectors and a low detection limit of 20.9 nGyair s−*** have further demonstrated a flat panel X-ray imager(FPXI)showing a high spatial resolution of 3.6 lpmm−1 and outstanding X-ray imaging capability under low X-ray *** work presents an effective methodology for achieving high-performance Q-2D perovskite FPXIs that holds great promise for various applications in imaging technology.

关键词： perovskite dimensional performance

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Hydrophobic modification of polysaccharides and the construction and properties of their micelles:a review of applications in the field of biomedicine

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Science China Chemistry 2024年第6期67卷 1881-1903页

作者： Dayang Wang Xiaohua Li Huanchen Yao Xin Liu Yan Gao Hailin Cong Bing Yu Youqing Shen College of Chemistry and Chemical Engineering College of Life SciencesCollege of Materials Science and EngineeringInstitute of Biomedical Materials and EngineeringQingdao UniversityQingdao266071China State key laboratory of Bio-Fibers and Eco-Textiles Qingdao UniversityQingdao266071China School of materials Science and Engineering Shandong University of TechnologyZibo255000China key laboratory of Biomass Chemical Engineering of Ministry of Education Center for Bionanoengineeringand Department of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027China

Nanomedicine delivery technology plays an important role in modern medicine and has shown good therapeutic effects in scientific *** have the characteristics of wide sources,excellent biocompatibility,and *** addition,there are multifunctional groups on the main chain of polysaccharides,which can be surface-modified or functionalized to have targeting ability through specific sugar *** polysaccharide micelles with good biocompatibility,degradability,high safety,easy structural modification,and special core-shell structure are regarded as ideal carriers for ***,this review is focused on the hydrophobic modification designs of polysaccharides,the preparation methods and characteristics of micelles,and the applications of amphiphilic polysaccharide micelles in the field of *** is expected to provide some ideas and inspiration for the design of polysaccharide drug carriers.

关键词： polysaccharide hydrophobic modification micelle drug delivery biomedicine

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Assembly-promoted photocatalysis:Three-dimensional assembly of CdS_(x)Se_(1-x)(x=0-1) quantum dots into nanospheres with enhanced photocatalytic performance

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Journal of Materiomics 2017年第1期3卷 63-70页

作者： Lina Wang Qiumei Di Mingming Sun Jia Liu Chuanbao Cao Jiajia Liu Meng Xu Jiatao Zhang beijing key laboratory of construction Tailorable advanced functional materials and green applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing100081China

In this paper,through an emulsion-based bottom-up self-assembly method,monodisperse CdS_(x)Se_(1-x)(x=0-1)quantum dots(QDs)with tailoring compositions have been three-dimensionally assembled into spherical architectures in sub-micrometer *** absorption measurements revealed the enhanced light harvesting abilities of the assembled CdS_(x)Se_(1-x) spheres relative to their constituting *** characterizations over the CdS_(x)Se_(1-x) assemblies suggested the existence of localized oriented adjoining of the CdS_(x)Se_(1-x) QDs and the resulting nano-twin structures that are favorable for photogenerated electron-hole *** quenching of photoluminescence and the improvement in IPCE after the assembly of CdS_(x)Se_(1-x) QDs provided a clue to the likely suppressed electron-hole recombination brought about by the unique architectures and interfaces derived from *** above findings were coincided with the remarkably improved H2 evolution activities observed for the wellassembled CdS_(x)Se_(1-x) nanospheres in photocatalytic water splitting,underpinning the importance of the alternative strategy to design advanced semiconductor photocatalysts based on architectural engineering.

关键词： CdS_(x)Se_(1-x)quantum dots Three-dimensionally assembly Colloidal nanospheres Photocatalysis

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Gelation of Hole Transport Layer to Improve the Stability of Perovskite Solar Cells

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Nano-Micro Letters 2023年第10期15卷 305-316页

作者： Ying Zhang Chenxiao Zhou Lizhi Lin Fengtao Pei Mengqi Xiao Xiaoyan Yang Guizhou Yuan Cheng Zhu Yu Chen Qi Chen beijing key laboratory of construction Tailorable advanced functional materials and green applications MIIT Key Laboratory for Low‑Dimensional Quantum Structure and DevicesExperimental Center of Advanced MaterialsSchool of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081People’s Republic of China

To achieve high power conversion efficiency(PCE) and long-term stability of perovskite solar cells(PSCs), a hole transport layer(HTL) with persistently high conductivity, good moisture/oxygen barrier ability, and adequate passivation capability is important. To achieve enough conductivity and effective hole extraction, spiro-OMe TAD, one of the most frequently used HTL in optoelectronic devices, often needs chemical doping with a lithium compound(LiTFSI). However, the lithium salt dopant induces crystallization and has a negative impact on the performance and lifetime of the device due to its hygroscopic nature. Here, we provide an easy method for creating a gel by mixing a natural small molecule additive(thioctic acid, TA) with spiro-OMe TAD. We discover that gelation effectively improves the compactness of resultant HTL and prevents moisture and oxygen infiltration. Moreover, the gelation of HTL improves not only the conductivity of spiro-OMe TAD, but also the operational robustness of the devices in the atmospheric environment. In addition, TA passivates the perovskite defects and facilitates the charge transfer from the perovskite layer to HTL. As a consequence, the optimized PSCs based on the gelated HTL exhibit an improved PCE(22.52%) with excellent device stability.

关键词： Perovskite solar cell Hole transport layer Gelation Humidity stability Aggregation of LiTFSI

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Modulating the local coordination environment of single-atom catalysts for enhanced catalytic performance

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Nano Research 2020年第7期13卷 1842-1855页

作者： Xinyuan Li Hongpan Rong Jiatao Zhang Dingsheng Wang Yadong Li beijing key laboratory of construction-Tailorable advanced functional materials and green applications Experimental Center of advanced materials School of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China Department of Chemistry Tsinghua UniversityBeijing 100084China

The local coordination environment of catalysts has been investigated ftor an extended period to obtain enhanced catalytic *** with the advancement of single-atom catalysts(SACs),research on the coordination environment has been advanced to the atomic *** surrounding coordination atoms of central metal atoms play important roles in their catalytic activity,selectivity and *** recent years,remarkable improvements of the catalytic performance of SACs have been achieved by the tailoring of coordination atoms,coordination numbers and second-or higher-coordination shells,which provided new opportunities for the further development of *** this review,the characterization of coordination environment,tailoring of the local coordination environment,and their related adjustable catalytic performance will be *** hope this review will provide new insights on further research of SACs.

关键词： single-atom catalysts coordination environment catalytic performance energy conversion

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Bimetal nanoparticles hybridized with carbon nanotube boosting bifunctional oxygen electrocatalytic performance

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Rare Metals 2022年第8期41卷 2616-2623页

作者： Chen Sun Yong-Jie Zhao Xuan-Yi Yuan Jing-Bo Li Hai-Bo Jin beijing key laboratory of construction Tailorable advanced functional materials and green applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing100081China beijing key laboratory of Opto-Electronic functional materials&Micro-Nano Devices Department of PhysicsRenmin University of ChinaBeijing100872China

Developing bifunctional oxygen catalysts with high efficiency and low cost to replace platinum-group metal catalysts commonly utilized in metal-air batteries is critically *** this article,a convenient method to synthesis NiFe nanoparticles hybridized with N-doped carbon nanotube(NiFe@N-CNTs)is *** performance analysis indicates that Ni_(x)Fc_(1-x)@N-CNTs offers favorable oxygen reduction reaction(ORR)kinetics(onset potential(E_(onset))is 0.87 V and half-wave potential(E_(1/2))is0.84 V),together with excellent oxygen evolution reaction(OER)performance(an overpotential of 270 mV to drive10 mA·cm^(-2)).Contributed by the synergetic effect between NiFe alloy and N-CNTs,when being utilized as air cathode,rechargeable Zn-air batteries present superior cycling stability for over 150 *** research provides a universal strategy to synthesize the hybrids of intertwined carbon nanotube matrix loaded with alloy nanoparticles.

关键词： NiFe alloy Oxygen evolution reaction(OER) Oxygen reduction reaction(ORR) Zn-air batteries

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Low-dimensional van der Waals materials for linear-polarization-sensitive photodetection: materials, polarizing strategies and applications

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materials Futures 2024年第1期3卷 95-127页

作者： Yuhang Ma Huaxin Yi Huanrong Liang Wan Wang Zhaoqiang Zheng Jiandong Yao Guowei Yang State key laboratory of Optoelectronic materials and Technologies Nanotechnology Research CenterSchool of Materials Science&EngineeringSun Yat-sen UniversityGuangzhou 510275GuangdongPeople’s Republic of China Guangzhou key laboratory of Flexible Electronic materials and Wearable Devices Sun Yat-sen UniversityGuangzhou 510275GuangdongPeople’s Republic of China School of materials and Energy Guangdong University of TechnologyGuangzhou 510006GuangdongPeople’s Republic of China

Detecting light from a wealth of physical degrees of freedom(***,intensity,polarization state,phase,etc)enables the acquirement of more comprehensive *** the past two decades,low-dimensional van der Waals materials(vdWMs)have established themselves as transformative building blocks toward lensless polarization optoelectronics,which is highly beneficial for optoelectronic system *** review provides a comprehensive overview on the recent development of low-dimensional vdWM polarized *** begin with,the exploitation of pristine 1D/2D vdWMs with immanent in-plane anisotropy and related heterostructures for filterless polarization-sensitive photodetectors is ***,we have systematically epitomized the various strategies to induce polarization photosensitivity and enhance the degree of anisotropy for low-dimensional vdWM photodetectors,including quantum tailoring,construction of core–shell structures,rolling engineering,ferroelectric regulation,strain engineering,etc,with emphasis on the fundamental physical *** that,the ingenious optoelectronic applications based on the low-dimensional vdWM polarized photodetectors,including multiplexing optical communications and enhanced-contrast imaging,have been *** the end,the current challenges along with the future prospects of this burgeoning research field have been *** the whole,the review depicts a fascinating landscape for the next-generation high-integration multifunctional optoelectronic systems.

关键词： polarization-discriminating photodetectors 1D van der Waals materials

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