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Advanced Progress of Green Textile with Special Wettability LI Shuhui, HUANG Jianying, LAI Yuekun Chem. J. Chinese Universities    2021, 42 (4): 1043-1060.   DOI: 10.7503/cjcu20200646 Abstract （878）   HTML （42）    PDF（pc） （37440KB）（1529）       Knowledge map    Save We introduced the preparation mechanism of biomimetic superhydrophobic surfaces and the development of hydrophobic finishing chemicals. The research process of multi-functional green textile with special wettability in the last 10 years was systematically reviewed. The preparation technologies and applications in double-superhydrophobic， asymmetric superhydrophobic/superhydrophilic janus surface， patterned/ stimulated responsive surface were discussed. The prospective works were emphasised in this review， including self-cleaning， oil/water separation， durable mechanical surfaces， patterning， self-healing， one-way transportation， especially in some emerging fields such as smart response， wearable electronics， energy- harvesting. The summary and outlook of superhydrophobic and multi-funtional textile were also demonstrated at last. Table and Figures | Reference | Related Articles | Metrics

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Alkaline-assisted Hydrothermal Fabrication of CdZnS with Enhanced Visible-light Photocatalytic Performance† LU Yonghong, WU Pingxiao, HUANG Junyi, TRAN Lytuong, ZHU Nengwu, DANG Zhi Chem. J. Chinese Universities    2015, 36 (8): 1563-1569.   DOI: 10.7503/cjcu20150142 Abstract （1904）   HTML （1）    PDF（pc） （7246KB）（932）       Knowledge map    Save A series of visible-light photocatalysts, CdZnS[CZS-r, r=n(NaOH)/2n(Cd2++Zn2+)] solid solution, was fabricated by alkaline-assisted hydrothermal method. The crystal structure, microstructure and band gap energy(Eg) of the as-synthesized crystals were characterized by multiple techniques including powder X-ray diffraction(XRD), field emission scanning electron microscopy(FESEM), transmission electron microscopy(TEM), Brunauer-Emmett-Teller(BET) surface area analysis and solid-state UV-Vis diffuse reflectance spectra(UV-Vis DRS). The results showed that alkaline-assisted method can significantly lower the size of the crystals, improve the dispersibility of the particles, enlarge the specific surface area of the semiconductors and introduce the stacking faults. Additionally, the photocatalytic properties of the CzS-r samples were evaluated by hydrogen generation under the irradiation of visible light(λ≥420 nm). It has been found that CZS-0.5 possessed the 5 h average hydrogen production rate of 2154 μmol/(h·g), 29.92 times that of CZS-0[72 μmol/(h·g)], which is mainly ascribed to the unique potential provided by the stacking faults. Table and Figures | Reference | Related Articles | Metrics Cited: Baidu(2)

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Cover and Content of Chemical Journal of Chinese Universities Vol.32 No.11(2011) Chem. J. Chinese Universities    2011, 32 (11): 0-.   Abstract （2018）      PDF（pc） （17581KB）（548）       Knowledge map    Save Related Articles | Metrics

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Cover and Content of Chemical Journal of Chinese Universities Vol.45 No.2(2024) Chem. J. Chinese Universities    2024, 45 (2): 1-6.   Abstract （119）      PDF（pc） （21733KB）（252）       Knowledge map    Save Related Articles | Metrics

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Construction and Application of Polylysine Peptide Modified Gelatin Multifunctional Hydrogel JIANG Yunjing, HUANG Tongdai, CAO Yuyu, BAI Rongxian, WU Jie, WANG Zuxi, SUN Hongmei Chem. J. Chinese Universities    2024, 45 (1): 20230312-.   DOI: 10.7503/cjcu20230312 Abstract （155）   HTML （20）    PDF（pc） （7288KB）（179）       Knowledge map    Save The ε-polylysine（EPL） antibacterial peptide was grafted onto gelatin to synthesize EPL-modified gelatin（GEL-E）， afterwards， a multifunctional hydrogel， GEL-E/CMC/OCS hydrogel， with injectable， self-healing and antibacterial properties was prepared using GEL-E， carboxymethyl chitosan（CMC） and chondroitin oxysulfate（OCS）.The experimental results showed that the hydrogel prepared has high energy storage modulus， elastic deformation， self-healing， injectable and antibacterial properties. Dipotassium glycyrrhizinate（DG） was loaded into hydrogel， which endowed the hydrogel with anti-inflammatory properties and wound healing ability. The results showed that the drug release rate could reach 100%. Meanwhile， the cell compatibility and the ability of promoting cell migration were evaluated， the results showed that the hydrogels presented very low cytotoxicity and could promote cell migration. All the above results indicated that the GEL-E/CMC/OCS hydrogel has good mechanical properties， biocompatibility and ability to promote cell migration， and has broad application prospects in the field of promoting wound healing. Table and Figures | Reference | Supplementary Material | Related Articles | Metrics

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Cover and Content of Chemical Journal of Chinese Universities Vol.45 No.3(2024) Chem. J. Chinese Universities    2024, 45 (3): 1-.   Abstract （93）      PDF（pc） （20346KB）（123）       Knowledge map    Save Related Articles | Metrics

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Research Progress of Electrocatalytic Ammonia Synthesis from Different Nitrogen Sources ZHAO Xiaoguang, WANG Yunlong, YIN Haibo, QU Yakun, SU Haiwei, FANG Wei Chem. J. Chinese Universities    2024, 45 (3): 20230527-.   DOI: 10.7503/cjcu20230527 Abstract （191）   HTML （17）    PDF（pc） （11986KB）（123）       Knowledge map    Save Ammonia is an important raw material for fertilizer production and chemical industry， and is also a good carbon-free energy storage fuel. Compared with the Haber-Bosch method for industrial-scale ammonia synthesis with high energy consumption and low conversion rate， the electrocatalytic ammonia synthesis method has the advantages of green and high efficiency under mild environmental conditions. This article reviews the reaction mechanism of electrocatalytic ammonia synthesis when using nitrogen， nitrate， and nitrogen oxide as different nitrogen sources. Based on the characteristics of different nitrogen sources， the research progress and advantages of each are analyzed. The problems of difficulty in controlling intermediates and reaction paths for nitrate reduction because of the large elemental valence span， complexity of the nitrogen oxide system， difficulty in controlling the hydrogen evolution reaction， and difficulty in dissolving nitrogen in water for activation are discussed， respectively. The solutions are summarized to develop high activity catalysts with different strategies to improve the reaction efficiency and selectivity， to optimize the reaction device to reduce the influence of mass transfer， and to select different electrolyte systems to improve the reaction process. Table and Figures | Reference | Related Articles | Metrics

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Two-dimensional Materials for Osmotic Energy Conversion XIN Weiwen, WEN Liping Chem. J. Chinese Universities    2021, 42 (2): 445-455.   DOI: 10.7503/cjcu20200605 Abstract （843）   HTML （37）    PDF（pc） （14158KB）（1545）       Knowledge map    Save Osmotic energy conversion， the extraction of power from the salt difference between river water and seawater， is a crucial way to solve the energy crisis in future. Osmotic energy attracts extensive attention and research due to its huge reserves， easy accessibility， and sustainability. Ion-exchange membrane is a key component in reverse electrodialysis（RED） technology for osmotic energy conversion， which immensely impacts the performance of osmotic energy conversion. Two-dimensional（2D） materials such as graphene， graphene oxide， molybdenum disulfide， various frame materials and their functionalized composites have become prospective materials for harvesting osmotic energy on account of their excellent ion selective transport， nanoscale pores or channels， abundant functional groups， and modifiability. In this review， we summarize the types of 2D materials as ion transport channels and their corresponding transport mechanisms. Furthermore， we also discuss the current state of the art in designs and show the applications of 2D materials and their composites in osmotic energy conversion. Finally， we overview the challenges of 2D materials in osmotic energy conversion and propose future directions of research. Table and Figures | Reference | Related Articles | Metrics

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Molecular Probe for the Determination of Hydroxyl Radicals in Heterogeneous Systems: Coumarin† HAN Ruixia,LÜ Jitao,ZHANG Shuzhen Chem. J. Chinese Universities    2018, 39 (12): 2658-2664.   DOI: 10.7503/cjcu20180364 Abstract （3687）   HTML （71）    PDF（pc） （2894KB）（1210）       Knowledge map    Save Three common molecular probes—disodium terephthalate(TPA), sodium benzoate(BA) and coumarin(COU), with the corresponding transformation products of which are 2-hydroxyterephthalic acid(hTPA), salicylic acid(SA) and 7-hydroxycoumarin(7-hCOU) were assessed, respectively. The results showed that transformation products of TPA and BA were adsorbed seriously on ferrihydrite(the maximum adsorption capacity were 2.49 and 2.09 mg/g, respectively), which made them unsuitable to be used in heterogeneous systems. Moreover, COU was much better than TPA and BA in terms of sensitivity, linearity and concentration range responded to ·OH. And 7-hCOU had lower limit of detection than hTPA and SA(0.005, 0.046 and 0.072 μmol/L, respectively). COU was further demonstrated to be capable of quantifying ·OH produced in microbe-mineral systems and soil and sediment systems during redox cycle, where it showed great stability and reproducibility. It proved to be a reasonable molecular probe to apply to other ·OH production processes in heterogeneous systems and natural environment. Notably, it should be in the same pH buffer when comparing ·OH concentration between different systems since the pH has a great influence on the ·OH production. Table and Figures | Reference | Related Articles | Metrics

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Studies on Amide Ⅲ Infrared Bands for the Secondary Structure Determination of Proteins XIE Meng-Xia, LIU Yuan Chem. J. Chinese Universities    2003, 24 (2): 226-231.   Abstract （3346）      PDF（pc） （1101KB）（1363）       Knowledge map    Save Fourier transform infrared spectroscopy is increasingly becoming an important method for quantitatively determining the secondary structure of proteins. Amide Ⅰ band(1 600-1 700cm-1) and amide Ⅲ (1 220-1 330cm-1) are two main bands for this purposes. Amide Ⅲ was neglected because of its relatively weak in signals, but there is not interference from water and water vapor vibration bands and it is more sensitive to the changes of protein secondary structure. In this paper, proteins BSA and RNase A were denatured by methanol. The component bands of secondary structure in amide Ⅲ were assigned by combining the quantitative results of amide Ⅰ band. α-Helix 1 330-1 290cm-1; β-turn 1 295-1 265cm-1; Random coil 1 270-1 245cm-1 and β-sheet 1 250-1 220cm-1. The overlapping area between the neighboring bands of different structures, such as 1 290-1 295cm-1, 1 265-1 270cm-1, 1 245-1 250cm-1, can be determined according to quantitative results of amide Ⅰ band. By using above assignments, the quantitative analysis results of the proteins in which the secondary structures have been known were consistent with that of X-ray data and amide Ⅰ band. Related Articles | Metrics

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Advantages and Research Progress of Metal-organic Framework in Supercapacitors LU Chunyu, JING Yuan, WEI Xiaofei, YAO Shiwei, WANG Zhifei, WANG Shubin, DAI Fangna Chem. J. Chinese Universities    2024, 45 (2): 20230450-.   DOI: 10.7503/cjcu20230450 Abstract （223）   HTML （32）    PDF（pc） （24330KB）（196）       Knowledge map    Save Metal-organic framework（MOF） plays an important role in gas separation， energy storage， catalysis and other fields due to its excellent surface area， numerous active sites， adjustable pore size range and flexible framework structure. In recent years， the use of MOF materials with high surface area， permanent pores and inherent redox active sites as electrode materials for supercapacitors has attracted close attention from researchers. This paper starts with the application research of MOF in the field of supercapacitors， introduces the effects of their properties and structures on the electrochemical properties of supercapacitors emphatically， and elaborates the research progress of MOF property regulation and structure design. First of all， the conductivity of MOF is a key performance that affects the energy density and power density of supercapacitors， and the special structure of the material directly affects the conductivity. Secondly， the abundant active sites and adjustable pore size of MOF create conditions for its improvement of electrical conductivity. In addition， the structural stability of MOF is closely related to the cycling performance of supercapacitors. The construction of stable structure is an important prerequisite for enhancing the cycling performance of supercapacitors. Finally， the future research of MOF in the field of supercapacitors is prospected. The structure regulation is still an important research direction in this field. Table and Figures | Reference | Related Articles | Metrics

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Effects of Additive on the Electrodeposition and Coating Structure in a Novel System of Electronic Copper Electroplating LI Weiqing, JIN Lei, YANG Jiaqiang, Wang Zhaoyun, YANG Fangzu, ZHAN Dongping, TIAN Zhongqun Chem. J. Chinese Universities    2021, 42 (9): 2919-2925.   DOI: 10.7503/cjcu20210225 Abstract （892）   HTML （32）    PDF（pc） （3119KB）（1015）       Knowledge map    Save Electronic copper electroplating has important applications in the advanced electronic manufactu-ring industry. In this work， the effects of the additive XNS（a mixture of polyamine and nitrogen-containing compounds） on the coating structure in the novel， weakly alkaline and citrate-based multi-coordination system for copper electronic electroplating with low concentration of main salts（10 g/L copper sulfate） was investiga-ted. The constant current deposition experiments indicate that the additive XNS can increase the current efficiency of copper electrodeposition， which achieves 95.4% at a current density of 2.0 A/dm2 and increases by 17.5% comparing to the electroplating system without XNS. Electrochemical experiments prove that the additive XNS can change the cathodic reduction of Cu（Ⅱ） cations， i.e.， in presence of XNS which is a one-step two-electron process［Cu（Ⅱ）+2e→Cu］， and in absence of XNS which is a two-step one-electron processes ［Cu（Ⅱ）+e→Cu（Ⅰ）+e→Cu］， and improves the reduction current density of Cu electrodeposition. Although additive XNS can accelerate copper electrodeposition rate， the coating surface of Cu becomes much finer and neater. At the current density of 2.0 A/dm2， the crystal structure of copper coating is reconstructed from Cu（111） facet to Cu（200） facet， presenting highly preferred crystal orientation in the presence of XNS. Table and Figures | Reference | Related Articles | Metrics

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有机太阳能电池专刊 李永舫, 陈红征, 朱晓张, 何凤 Chem. J. Chinese Universities    2023, 44 (9): 1-4.   Abstract （256）      PDF（pc） （1427KB）（696）       Knowledge map    Save Related Articles | Metrics

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CO2-involved Electrochemical C—N Coupling into Value-added Chemicals WANG Ruhan, JIA Shunhan, WU Limin, SUN Xiaofu, HAN Buxing Chem. J. Chinese Universities    2022, 43 (7): 20220395-.   DOI: 10.7503/cjcu20220395 Abstract （398）   HTML （21）    PDF（pc） （5957KB）（348）       Knowledge map    Save CO2 is the main greenhouse gas and an important C1 resource. C—N bonds formation plays an important role in chemical industry， biosynthesis and medicine. In recent years， with the deepening of carbon neutrality and green chemistry concept， the strategy of electrochemical C—N bonds construction has attracted much attention due to its advantages of environmental benign， low carbon， simplicity and green. At the same time， continuous consumption of fossil resource results in a series of environmental and resource problems， and the green sustainable synthesis of important chemicals and fuels is attracting increasing attention. This paper focuses on the research progress of CO2-involved electrochemical C—N formation to prepare important chemicals. The electrochemical synthesis of urea， amide and amine are reviewed from the perspectives of catalytic system construction， reaction processes， and reaction mechanism. Finally， the critical challenges remaining in this research area and promising directions for future research are discussed. Table and Figures | Reference | Related Articles | Metrics

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Structural Characteristics, Syntheses and Applications of Hyperbranched Polymers WEI Huan-Yu, SHI Wen-Fang Chem. J. Chinese Universities    2001, 22 (2): 338-344.   Abstract （1855）      PDF（pc） （737KB）（1620）       Knowledge map    Save Hyperbranched polymers have received more and more research interest from polymer scientists because of the unique strutural characteristics, synthetic methods as well as application fileds. The present paper reviews the most recent advances in hyperbranched polymer, with emphasis being laid on the above-mentioned three related aspects in an attempt to make this field to be further understood, and to accelerate it to develop more quickly. Fifty references were cited in this work. Related Articles | Metrics

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Self-assembled Ultrathin FilmsFrom Layered Nanoarchitectures to Functional Assemblies WU Tao, ZHANG Xi Chem. J. Chinese Universities    2001, 22 (6): 1057-1065.   Abstract （2015）      PDF（pc） （971KB）（836）       Knowledge map    Save We have summarized the development of a new type of self assembly technique in fabricating ultrathin filmslayer-by-layer-self ssembly technique, concentrating on some aspects as: driving forces for film fabrication, layered assemblies of biomolecules, inorganic/organic heterostructures, layered assemblies of small organic molecules, ultrathin films for chemically modified electrodes, chemical reaction between layers and layered architecture on nonplanar substrate. Related Articles | Metrics

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Stability of Emulsion Copolymerization of Acrylic Monomers Containing Amino and Hydroxyl Groups YU Zhang-Qing, LI Bo-Geng, LI Bao-Fang, PAN Zu-Ren Chem. J. Chinese Universities    1998, 19 (3): 472-476.   Abstract （2024）      PDF（pc） （1822KB）（627）       Knowledge map    Save The copolymer latex of MMA-BA-HEMA-DMAEMA was prepared in the batch and semi-continuous emulsion copolymerization process. The effects of emulsifier type and concentration, polymerization temperature and the feeding rate of emulsified monomer on the stability of polymerization were studied systematically. The results show that the HLB is not critical parameter for selecting the emulsifier used for the emulsion polymerization containing water-soluble monomers. The available method for determining emulsifier system is still directly by the stability observation of the polymerization runs. The increase of functional monomer HEMA and DMAEMA content is beneficial to polymerization stability. The decrease of the polymerization temperature and the reduction of the feeding rate of the emulsified monomers are favorable to the stability of polymerization. The stability of batch polymerization is inferior to that of semi-continuous polymerization for this system. The results also show that the increase of the emulsifier concentration will improve the stability of polymerization and uniformerize the particle size. Related Articles | Metrics

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Design, Synthesis and Electroluminescence of Organic Conjugated Compounds Based on Pyrene-imidazole† LIU Yulong, LU Fang, LU Ping Chem. J. Chinese Universities    2017, 38 (4): 583-590.   DOI: 10.7503/cjcu20170049 Abstract （1798）   HTML （3）    PDF（pc） （3506KB）（688）       Knowledge map    Save A series of organic fluorescent materials based on pyrene-imidazole was designed and synthesized by one-pot reactions. The compounds were thoroughly characterized by 1H NMR and 13C NMR spectroscopy, mass spectroscopy and elemental analysis and corresponded well with their expected structures. The conjugation degree, spatial structure, the highest occupied molecular orbital(HOMO) and the lowest unoccupied molecular orbital(LUMO) energy levels are fine-tuned by the various substituents at C1 position of imidazole. They also increase the thermal stabilities of these pyrene-imidazole derivatives. These materials show potential applications in organic light-emitting diodes. Table and Figures | Reference | Related Articles | Metrics Cited: Baidu(2)

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Near-infrared-Ⅱ Fluorescence Imaging for Tumor Diagnosis and Therapy WANG Shiqi, LUO Bowen, YU Jicheng, GU Zhen Chem. J. Chinese Universities    2022, 43 (12): 20220577-.   DOI: 10.7503/cjcu20220577 Abstract （611）   HTML （54）    PDF（pc） （13891KB）（351）       Knowledge map    Save Due to the distinct advantages of deep tissue penetration and high spatial-temporal resolution， near- infrared-Ⅱ（NIR-Ⅱ， 1000—1700 nm） fluorescence imaging technology that developed rapidly in the last decade has attracted extensive attentions for its great potential in tumor diagnosis and therapy. In this review， we first illustrated the mechanism and advantages of fluorescence imaging in the NIR-Ⅱ window. Afterward， the current fluorophores were categorized according to chemical structures， and their properties were introduced respectively. We also highlighted the advances in the development of fluorescence probes and their applications in tumor detection， surgery resection and phototherapy. Finally， we discussed the limitations of current NIR-Ⅱ fluorescence probes and the challenges during clinical translation as well as prospects for future biomedical applications. Table and Figures | Reference | Related Articles | Metrics

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Aqueous Two-phase Extraction Based on Deep Eutectic Solvents Coupled with UPLC for the Analysis of Heterocyclic Aromatic Amines in Urine of Smokers LI Min, HE Shanshan, WANG Hongyu, ZHUANG Jiaying, JIN Yongri, LI Xuwen Chem. J. Chinese Universities    2024, 45 (3): 20230469-.   DOI: 10.7503/cjcu20230469 Abstract （107）   HTML （3）    PDF（pc） （1363KB）（106）       Knowledge map    Save To assess the exposure to heterocyclic aromatic amines（HAAs） from tobacco smoke， a novel method， an aqueous two-phase system based on deep eutectic solvent（DES-APTS） followed by UPLC， was described to analyze five HAAs（IQ， IQ［4，5-b］， Harman， Norharman， Phe-P-1） from the urine samples of smokers. Seven kinds of choline chloride（ChCl）-based DESs had been synthesized and characterized by 1H NMR and FTIR spectra. The significant parameters affecting the extraction efficiency of HAAs in the DES-ATPS procedure were systematically investigated. Under optimal extraction conditions， the recoveries for the target HAAs ranged from 81.9% to 106.2%. The obtained intra- and inter-day relative standard deviations（RSDs） were less than 2.9% and 3.2%， respectively. The detection limits（LODs） and quantification limits（LOQs） were obtained in ranges of 0.020—0.097 ng/g and 0.19—0.39 ng/g， respectively. The developed method of DES-ATPS， with its simplicity， good environment-friendliness and low-cost per sample， could be a promising alternative technique for rapidly extracting and quantifying HAAs from urine samples， and displayed great development potential in the field of the detection in biological samples. Table and Figures | Reference | Related Articles | Metrics