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    Application of Elastin-like Polypeptides in Supramolecular Assembly
    HOU Chunxi, LI Yijia, WANG Tingting, LIU Shengda, YAN Tengfei, LIU Junqiu
    Chemical Journal of Chinese Universities    2020, 41 (6): 1163-1173.   DOI: 10.7503/cjcu20190667
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    Recent research progress of elastin-like polypeptides(ELPs) in temperature-responsive supramolecular structures is summarized systematically. The unique advantages of temperature controlled phase transition of elastin in the construction of supramolecular assembly are discussed and the sequence sensitivity of ELPs nanostructures is also demonstrated. Finally, the application of ELPs in supramolecular assembly in the future is prospected.

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    Single-molecule Imaging and Analysis of Signal Transduction Proteins on Cell Membranes
    LIANG Yuxin, ZHAO Rong, LIANG Xinyue, FANG Xiaohong
    Chemical Journal of Chinese Universities    2020, 41 (6): 1127-1138.   DOI: 10.7503/cjcu20190663
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    Membrane proteins play an important role in cell signal transduction. Structural and functional abnormalities of membrane proteins can cause a variety of diseases. The development of single-molecule fluorescence imaging technology has enabled researchers to study the location and dynamic behavior of single membrane proteins in living cell systems, and their interactions with other molecules. Single-molecule fluorescence imaging technology has been widely used to reveal the molecular mechanisms of signal transduction under physiological conditions in recent years. Based on the our research work, this paper introduces the imaging principle, fluorescent labeling method and data analysis method of single-molecule fluorescence imaging in the study of cell membrane proteins, and further reviews the research progress of single-molecule fluorescence imaging on mechanistic study of several important signal transduction membrane proteins and related drug development.

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    Construction of Controllable Lipid-DNA Complex for Study in Membrane Biology
    ZHANG Luhao, CAO Shuting, LIU Jiangbo, ZUO Xiaolei, WANG Lihua, FAN Chunhai, LI Jiang
    Chemical Journal of Chinese Universities    2020, 41 (6): 1151-1162.   DOI: 10.7503/cjcu20200067
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    This review briefly summarized recent progress of lipid-DNA complexes, including their design, construction, and unique features. We highlighted their applications on living cell membranes, including dynamic membrane analysis, nanopores, live cell organization and interaction regulation, and drug delivery. We also summarized challenges in this field. We suggest that by using these lipid-DNA conjugates, cell membrane functions at the molecular level can be better understood and manipulated, which may facilitate the development of cell imaging, theranostics, construction of nanodevices and protocells.

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    Recent Advances on High Mobility Emissive Anthracene-derived Organic Semiconductors
    XIE Ziyi, LIU Dan, ZHANG Yihan, LIU Qingqing, DONG Huanli, HU Wenping
    Chemical Journal of Chinese Universities    2020, 41 (6): 1179-1193.   DOI: 10.7503/cjcu20190650
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    High mobility emissive organic semiconductors are the important core materials for the realization of organic light-emitting transistors(OLETs). However, it remains a long-standing challenge for developing high mobility emissive organic semiconductors because of the different molecular design requirements as well as their molecular packing in solid state. Recently, significant advance has been achieved in the development of high mobility emissive organic semiconductors, especially for the anthracene-derived high mobility emissive materials, which would lead to the rapid development of this field. In this article, we first give a brief introduction for the significant progress in the whole field, and then focus on special development of high mobility emissive anthracene-derivatives(more than 20 types) along with their molecular structure design, molecular packing and optoelectronic properties as well as their applications in OLETs. Finally, the challenges, development directions and opportunities are discussed. Hopefully, this review would give a valuable guideline for the further research in this field.

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    Research Progress of Photoelectrochemical Technology Applied in Antioxidant Analysis
    HAN Fangjie, DAI Mengjiao, LIANG Zhishan, SONG Zhongqian, HAN Dongxue, NIU Li
    Chemical Journal of Chinese Universities    2020, 41 (4): 591-603.   DOI: 10.7503/cjcu20190651
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    In the process of metabolism, the body will produce a large number of oxidation active substances with free radicals as the main formation, and antioxidants can capture and neutralize free radicals in the form of electron transfer, so as to protect the cell from damage, prevent and retard the oxidative deterioration of food. Therefore, it is of great significance for the determination and evaluation of antioxidants capacitance in foods. As a low-cost, simple, quick and sensitive method, photoelectrochemical(PEC) technology can overcome the shortcomings of conventional methods, such as optical method, chromatographic method and electrochemical method. The design of photocatalysis materials is the key of the PEC platform. The review concludes with the progress of the photoelectrochemical platform based on semiconductor materials applied in the analysis of antioxidant capacity in food and the characteristics of various detection systems. In addition, the future research directions are also proposed.

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    Molecular-fence Catalysts for Low-temperature Oxidation of Methane to Methanol
    SHEN Wenjie
    Chemical Journal of Chinese Universities    2020, 41 (3): 375-376.   DOI: 10.7503/cjcu20200056
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    Selective oxidation of methane to methanol often suffers from the low reaction efficiency. Based on the concept of molecular fence effect, Xiao and co-workers reported a heterogeneous catalyst system for strengthening methane oxidation by the in-situ generated hydrogen peroxide at mild temperatures. They achieved a 17.3% conversion of methane and 92% selectivity toward methanol, giving a methanol productivity of 91.6 millimoles per gram of AuPd per hour. This work has been published online in Science in Jan.10, 2020.

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    Recent Progress in Functional Nanomaterials Based on Self-assembly Technology
    WANG Jun, WANG Tie
    Chemical Journal of Chinese Universities    2020, 41 (3): 377-387.   DOI: 10.7503/cjcu20190643
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    The rapid development of nanoscale self-assembly technology has broadened the application of nanomaterials. The self-assembly provides an effective and promising way to form new nanomaterials. This review introduces the value of nanoscale self-assembly technology and emerging synthesis methods in recent years. It focuses on the types of interactions driving nanoscopic self-assembly, including van der Waals forces, electrostatic forces, magnetic forces, hydrogen bonding, entropy effects, and other interactions(solvophobic interactions, DNA complementary base paring rules, etc.). In addition, the application fields as well as the existing opportunities and challenges of nanoscale self-assembly in developing novel materials are discussed.

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    Recent Advances in the Preparation of 8MR Zeolites for the Selective Catalytic Reduction of NOx(NH3-SCR) in Diesel Engines
    ZHANG Ling,DUAN Hongchang,TAN Zhengguo,WU Qinming,MENG Xiangju,XIAO Fengshou
    Chemical Journal of Chinese Universities    2020, 41 (1): 19-27.   DOI: 10.7503/cjcu20190518
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    We summarize the recent progress in the preparation of 8MR zeolites(CHA, AEI, RTH) for the selective catalytic reduction of NOx(NH3-SCR) in diesel, discuss the performance differences of 8MR zeolites synthesized by different routes in SCR. Finally, the challenges in the preparation of 8MR zeolites are also discussed.

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    Advances in Hydrothermal Catalysis Conversion of Biomass into Oxygen-containing Chemicals
    KONG Lingzhao,MIAO Gai,LUO Hu,SUN Yuhan
    Chemical Journal of Chinese Universities    2020, 41 (1): 11-18.   DOI: 10.7503/cjcu20190561
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    As the renewable, widely distributed and green carbon-containing resource, the utilization of biomass, especially the preparation of high-value added oxygen-containing chemicals, has attracted increasing attention from researchers. At present, preparation of important oxygen-containing chemicals through hydrothermal catalysis from biomass is an important research field. In this paper, the progress in the preparation of polyols, 5-hydroxymethylfurfural(5-HMF) and lactic acid by hydrothermal catalytic hydrogenation, dehydration and hydrolysis of biomass was systematically reviewed. The catalytic mechanism and reaction pathways were analyzed in detail, and the research prospect of hydrothermal catalysis of biomass was prospected.

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    Research Advance of Electrically Controlled Droplet Motion
    DAI Haoyu,DONG Zhichao,JIANG Lei
    Chemical Journal of Chinese Universities    2020, 41 (1): 1-10.   DOI: 10.7503/cjcu20190632
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    Electrically controlled droplet motion is a strategy of using electric field to manipulate droplet motion, which has attracted much attentions due to its advantages of fast response, high speed and controllable path for the droplet. It is of great significance in the basic research of field-stimulus droplet motion and the practical application of intelligent microfluidic devices. This paper summarizes the basic principle and research progress of classic droplet motion driven by electrowetting, introduces the representative achievements of new-type electrically controlled droplet motion, and prospects the development of related research and applications.

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    Entropy-driven Crystallization of Colloid Particles Within Cylindrical Confinement
    HOU Cuiling,ZHU Guolong,DAI Xiaobin,XU Ziyang,CHEN Pengyu,ZHANG Xuanyu,GAO Lijuan,YAN Litang
    Chemical Journal of Chinese Universities    2020, 41 (1): 44-48.   DOI: 10.7503/cjcu20190602
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    The dynamic process of entropy-driven colloidal particle crystallization within cylindrical con?nement was investigated by Brownian dynamics simulations. In these densely-packed systems, the influence of volume fraction and number of particles on the crystal morphology and structure by cylindrical con?nement, as well as the crystallization process and growth mechanism of colloidal particles were studied, and the evolution of cylindrical crystal structure was simulated. It is found that at low volume fraction, the particle packing structure is gradually layered from concentric circles with the increase of the number of colloidal particles and cylindrical diameter, which is cue to the competition between boundary effect and lattice defect. Particularly, the entropy plays a dominant role in this process. Our findings provide insights into the control of crystal morphology of colloidal particles, deepen the understanding of entropy-driven ordered behavior in colloidal systems, and present a new approach for the structural construction and dynamics regulation for self-assembly of various colloidal systems.

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    Mesoporous Silica Nanoparticles-Based Stimuli-Responsive Drug Delivery Systems Gated by Polymers
    WANG Xinghuo,TANG Jun,YANG Yingwei
    Chemical Journal of Chinese Universities    2020, 41 (1): 28-43.   DOI: 10.7503/cjcu20190572
    Abstract371)   HTML17)    PDF(pc) (11532KB)(227)       Save

    With the rapid development ofmaterials science and nanotechnology, stimuli-responsive drug delivery systems(DDS) for cancer therapy have drawn more and more attention. Mesoporous silica nanoparticles(MSNs) possess numerous advantages, such as large loading capacity, desirable biocompatibility, and various types of stimuli-responsiveness, which endowed them with significant roles in biomedical and related applications. Hybrid materials, particularly with MSNs as drug carriers and polymers as gatekeepers have emerged as promising DDS in recent years. In this review, we make an overview of such organic-inorganic hybrid materials for controlled drug release, with themain focus on the use of three types of polymer gating systems on the surfaces of MSNs, which include polymer brushes, polymers networks, and polymer coatings. On the basis of the types of connections, covalent or non-covalent, between these gatekeepers and drug carriers, we showcase the controlled drug release properties of these hybrid materials in response to a variety of external stimuli. The challenges and chances of hybrid nanocarriers constructed from MSNs and polymers are also discussed.

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    Structural Ide.pngication of Defects on Graphene/Ir(111)
    LI Shichao,LIU Mengxi,QIU Xiaohui
    Chemical Journal of Chinese Universities    2020, 41 (1): 49-55.   DOI: 10.7503/cjcu20190570
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    The ide.pngication of the precise structure of the defects is a prerequisite for studying the physicochemical properties of different types of defects and achieving of graphene properties. Scanning tunneling microscopy(STM) and atomic force microscopy(AFM) were combined to study the precise structure of graphene defects formed during the growth process on Ir(111) surface and a.pngicially induced by ion sputtering, including single vacancies, nonhexagonal topological structures, as well as the defects under graphene layer.

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    Non-Aufbau Principle to Achieve High Stability Organic Luminescence Radicals
    TANG Benzhong
    Chemical Journal of Chinese Universities    2019, 40 (9): 1793-1794.   DOI: 10.7503/cjcu2019h001
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    To solve the problem of stability of organic luminescence radicals, Li et al. proposed a new kind of organic luminescence radicals with non-Aufbau electronic structure by using donor-acceptor molecular structure. The stability of this kind of radicals was greatly improved and the high luminous efficiency was maintained. Using a non-Aufbau radical as the emission layer of an OLED, the maximum external efficiency of 5.3% has been achieved, which is among the highest efficiencies for pure organic near-infrared electroluminescence. This work has been published online in the Nature Materials in July 22, 2019.

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    MOFs-Based Materials for Photocatalytic CO2 Reduction
    HE Pengchen,ZHOU Jian,ZHOU Awu,DOU Yibo,LI Jianrong
    Chemical Journal of Chinese Universities    2019, 40 (5): 855-866.   DOI: 10.7503/cjcu20180688
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    We summarize the recent progress of metal-organic frameworks(MOFs) used for photocatalytic CO2 reduction, including MOFs employed directly as the photocatalysts for CO2 reduction and as components in hybrid photocatalytic systems for CO2 reduction. Meanwhile, the fascinating features of MOFs-based photocatalysts in CO2 reduction are presented. Finally, the challenges and perspectives regarding of MOFs-based photocatalyst are also discussed.

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    Fabrication and Properties of Flexible Thermoelectric Devices
    QU Dawei, LI Xin, CHEN Guangming
    Chemical Journal of Chinese Universities    2019, 40 (4): 617-623.   DOI: 10.7503/cjcu20190050
    Abstract481)   HTML13)    PDF(pc) (4047KB)(263)       Save

    In recent years, with the rapid developments of flexible electronics, wearable devices and organic as well as organic/inorganic composite thermoelectric materials, flexible thermoelectric devices have attracted great interest. Considering of few reviews available at present, the recent advances of flexible thermoelectric devices of organic/inorganic composites were reviewed. The assembling styles are divided into three types, i.e. serial, stacking and folding. The corresponding preparation procedures and the thermoelectric performances are highlighted. Finally, tentative conclusions of this research field are put forward, and the prospects of future research are provided.

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    Research Progress on Terahertz Stealth and Shielding Materials
    HUANG Zhiyu, CHEN Honghui, MA Wenle, HUANG Yi, ZHU Dan, CHEN Yongsheng
    Chemical Journal of Chinese Universities    2019, 40 (6): 1103-1115.   DOI: 10.7503/cjcu20180627
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    The simulation methods on terahertz stealth and shielding performance were briefly introduced, and the research progress on terahertz stealth and shielding materials was mainly reviewed. In addition, the existing problems as well as prospects were also proposed.

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    Basic Theory and Critical Problems in the Trajectory Surface Hopping Simulations on the Chemiluminescent Reaction of Organic Peroxides
    YUE Ling,LIU Yajun
    Chemical Journal of Chinese Universities    2018, 39 (10): 2113-2118.   DOI: 10.7503/cjcu20180516
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    Chemiluminescence, which is widely applied in various analysis and daily use, are a specific type of excited chemical reactions. The trajectory surface hopping(TSH) nonadiabatic molecular dynamics is often used to simulate the chemiluminescent and bioluminescent reactions. This review introduced the basic theory and critical techniques of TSH including the initial sampling, calculations of nuclear potential energies and forces, computational scheme of nonadiabatic transition probabilities.

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    Optical Properties and Applications of Halide-perovskite Nanocrystals
    JI Tianhao, TIAN Yanqing
    Chemical Journal of Chinese Universities    2018, 39 (6): 1113-1120.   DOI: 10.7503/cjcu20170788
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    Halide perovskite-type ABX3 nanocrystals mainly including the optical properties and applications of all-inorganic ABX3 nanocrystals were reviewed. First of all, the two preparation methods of atmospheric pressure, solvent heating and ion-exchange process for all-inorganic nanocrystals are reported; then, the optical properties of their absorption and photoluminescence are elaborated in detail; finally, their applications in light emitting diode(LED) and solar cell are emphasically elucidated, and also involving in the fields of laser, photodetector and photocatalysis. In the recent future, the halide perovskite nanocrystals will also definitely exhibit other potential applications owing to the excellent optical and electrical properties.

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    Research Progress in the Electrospun Nanofiber-based Supercapacitor Electrode Materials
    NIE Guangdi, ZHU Yun, TIAN Di, WANG Ce
    Chemical Journal of Chinese Universities    2018, 39 (7): 1349-1363.   DOI: 10.7503/cjcu20180195
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    Electrospun nanofibers are regarded as ideal candidates for energy storage materials due to their large specific surface area, high porosity, low density and other merits. In this review, we have presented the recent application progress of the electrospun carbon nanofibers, metal oxides/sulfides/nitrides, conducting polymers and their composites in supercapacitor electrodes. In addition, the relationship between the composition, structure and electrochemical performance was discussed in detail. Finally, the prospects for the development of the electrospun nanofiber-based electrode materials are highlighted. It is expected that this review will stimulate ideas and inspiration for the architecture design and controllable preparation of high-performance supercapacitor electrode materials.

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