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Applications of Metal-organic Framework-based Material in Carbon Dioxide Photocatalytic Conversion ZHAO Yingzhe, ZHANG Jianling Chem. J. Chinese Universities    2022, 43 (7): 20220223-.   DOI: 10.7503/cjcu20220223 Abstract （803）   HTML （29）    PDF（pc） （4990KB）（1532）       Knowledge map    Save Converting carbon dioxide（CO2） into fuels or high-additional-valued chemicals is an efficient route to decrease atmospheric CO2 concentration and mitigate green-house effect. Particularly， the photocatalytic CO2 conversion is of importance due to its mild reaction condition and low energy consumption. Metal-organic framework-based（MOF-based） materials are a kind of efficient catalyst for CO2 photocatalytic conversion owing to their unique features such as large specific surface area， good photoelectric properties and various tunability. In this article， the applications of MOF-based materials in CO2 photocatalytic reduction， cycloaddition and carboxylation in recent two years were reviewed. The advantages， limitations and future development of MOF-based materials for photocatalytic CO2 conversion reactions were discussed. Table and Figures | Reference | Related Articles | Metrics

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Functions of Plant RNA Modifications and Their Analytical Methods TANG Xiaomeng, YUAN Bifeng, FENG Yuqi Chem. J. Chinese Universities    2023, 44 (3): 20220265-.   DOI: 10.7503/cjcu20220265 Abstract （516）   HTML （23）    PDF（pc） （3104KB）（1054）       Knowledge map    Save Apart from the canonical nucleobases， RNA molecules contain a variety of chemical modifications. So far， over 150 different types of RNA modifications have been identified in the three-domain system of life. These chemical modifications do not alter the sequence of RNA， but they can change the structures and biochemical properties of RNA， which thereby can control and regulate the spatiotemporal expression of genes. As an important epigenetic regulation layer， RNA modifications also play crucial roles in regulating plant growth and development and respond to stresses. In recent years， with the rapid advancement of analytical methods， especially the technologies for RNA modification sequencing， the functions and mechanisms of plant RNA modifications have gained in-depth understanding. In the current review， we introduce the functions of plant RNA modifications and summarize the analytical methods for plant RNA modifications. We believe that this review will provide useful information for the systematic study of plant RNA modifications in the future. Table and Figures | Reference | Related Articles | Metrics

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Green Electrosynthesis Reaction of Potassium Azotetrazolium Salt Coupled by Hydrogen Production from Water Electrolysis by WS2 Nano Sheets YAO Tianhao, MA Yuhe, LIU Bolong, MA Yuqiang, ZHANG Cong, LI Jiachen, MA Haixia Chem. J. Chinese Universities    2023, 44 (12): 20230347-.   DOI: 10.7503/cjcu20230347 Abstract （459）   HTML （9）    PDF（pc） （5908KB）（1916）       Knowledge map    Save As a four-electron multi-step reaction process with sluggish kinetics， oxygen evolution reaction（OER） limits the reaction rate and reduces the overall efficiency of overall water splitting. Replacing OER with the oxidation reaction of thermodynamically more favorable organic energetic materials and coupling with hydrogen evolution reaction（HER）， so that the high value-added chemical products can be obtained while reducing the overall cell voltage to generate hydrogen. In this paper， a novel coupling system was proposed， in which the energy-containing ionic salt， potassium azotetrazolium salt（K2AZT）， was prepared on the anode side， and carbon cloth-supported tungsten disulfide nanosheets（CC@WS2 NSs） were used as HER catalyst to promote the HER on the cathode side. The system only requires a cell voltage of 1.65 V to achieve a current density of 10 mA/cm 2， which is 220 mV lower than that of conventional electrolyzed water（1.87 V）. In addition， the coupled system maintained smooth operation for at least 15 h， showing excellent stability. At the same time， the preparation of energetic compounds by green and safe electrochemical method avoids the problems of high energy consumption， high risk and high cost of traditional organic synthesis method， and provides a new synthesis strategy for the safe production of energetic materials. Table and Figures | Reference | Supplementary Material | Related Articles | Metrics

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Rapid Grafting of Phenylboronic Acid with Hydroxypropyl Chitosan Mediated by HATU LI Aoqi, HU Chuanzhi, SHI Han, DENG Mingyu, XIAO Bo, JIANG Bo Chem. J. Chinese Universities    2023, 44 (6): 20220698-.   DOI: 10.7503/cjcu20220698 Abstract （810）   HTML （21）    PDF（pc） （1100KB）（1441）       Knowledge map    Save Phenylboronic acid（PBA） can form reversible covalent bonds with cis-1，2-diol or 1，3-diol in an aqueous solution， which makes it useful as the glucose-responsive units or dynamic cross-linking groups in nano/hydrogels. In this paper， PBA was efficiently grafted on hydroxypropyl chitosan（HPCS） by employing 2-（7-azabenzotriazol-1-yl）- N，N，N'，N'-tetramethyluronium hexafluorophosphate（HATU） as a coupling reagent in dimethyl sulfoxide（DMSO）. The resulting carboxyphenylboronic acid-grafted hydroxypropyl chitosan（CPBA-HPCS） was soluble when pH>8.5， and the structure was characterized and confirmed by Fourier-transform infrared spectroscopy（FTIR） and nuclear magnetic resonance（NMR）. In addition， the kinetics of the reaction were studied and a series of CPBA-HPCS with different substitution degrees（up to 0.78） was prepared. This novel chitosan derivative has good application prospects in the preparation of smart hydrogels and drug carriers. Table and Figures | Reference | Related Articles | Metrics

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Research Progress of Controllable Self-assembled DNA Origami Structure as Drug Carrier WU Yushuai, SHANG Yingxu, JIANG Qiao, DING Baoquan Chem. J. Chinese Universities    2022, 43 (8): 20220179-.   DOI: 10.7503/cjcu20220179 Abstract （847）   HTML （54）    PDF（pc） （9692KB）（1145）       Knowledge map    Save In the past few decades， structural DNA nanotechnology， as a rapidly developing， controllable self- assembling strategy， enables the design and construction of a variety of sophisticated nanostructures. Particularly， DNA origami structures feature unique properties， such as rationally designed geometry， precise spatial addressabi?lity， easy of modification and good biocompatibility， which provide them with broad prospects in drug delivery. In this minireview， the research progresses of drug delivery systems based on the DNA origami technique were summarized. The future development prospects of DNA origami nanocarriers and remaining challenges in this field were also discussed. Table and Figures | Reference | Related Articles | Metrics

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Split Intein： a Versatile Tool for Traceless Peptide Segment Ligation HAN Dongyang, REN Yuxiang, YANG Ziyi, HUANG He, ZHENG Jishen Chem. J. Chinese Universities    2023, 44 (10): 20230188-.   DOI: 10.7503/cjcu20230188 Abstract （992）   HTML （53）    PDF（pc） （5394KB）（1155）       Knowledge map    Save Split intein can efficiently ligate peptide segments via a splicing reaction in a traceless manner and therefore has attracted great attention. Based on the structural characteristics and splicing reaction process of split intein， this paper comprehensively reviewed the recent progresses on the performance optimization and expanded applications of split intein， and revealed its great potential in the field of chemical protein synthesis as an increasingly sophisticated protein engineering technology. Finally， the challenges presented in the split intein- mediated protein trans-splicing and potential solutions in the future research were briefly discussed. Table and Figures | Reference | Related Articles | Metrics

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Efficient Oil-water Separation at the g-C3N4/TiO2-PVDF Photoresponsive Membrane Interface： Permeability and Selectivity Differences Induced by Different Exposed Crystal Planes and Performance ZU Peng, YUAN Pengcheng, WANG Shuguang, SUN Xuefei Chem. J. Chinese Universities    2023, 44 (6): 20230085-.   DOI: 10.7503/cjcu20230085 Abstract （392）   HTML （7）    PDF（pc） （7812KB）（1245）       Knowledge map    Save Membrane technology is constrained by membrane fouling of oil droplet obstruction in oil-water separation. A crucial step toward effective oil-water separation is the construction of a functional interface for selective separation of the oil-water mixture. In this paper， g-C3N4/TiO2-PVDF（polyvinglidene fluoride） photocatalytic membranes with different exposed crystal planes of TiO2 were prepared， and the effects of different exposed crystal planes on oil-water separation were studied. The experimental results show that the TiO2（001） surface endows the g-C3N4/ TiO2（001）-PVDF membrane with excellent superhydrophilicity and underwater superoleophobicsuperoil transport properties under sunlight irradiation， and compared with the TiO2（101） surface exposed membrane， g-C3N4/ TiO2（001）-PVDF membrane has better oil-water separation performance. Under visible light， the pure water flux of g-C3N4/TiO2（001）-PVDF membrane reaches 2002.9 L·m‒2·h‒1， which is 60.8% higher than that of g-C3N4/TiO2（101）- PVDF membrane， and 47.1% higher than that under dark conditions. Simultaneously， the rejection efficiency of the five kinds of oil substances is more than 99%， and the high permeation flux of 420.4—665.2 L·m‒2·h‒1 is maintained. The highest rejection efficiency of g-C3N4/TiO2（101）-PVDF membrane is only 61.8%， and the permeation flux is less than 200 L·m‒2·h‒1. The mechanism of different crystal planes was explored by transient photocurrent response and electron paramagnetic resonance technology. The results showed that the g-C3N4/TiO2（001）-PVDF membrane had a stronger light response current and more hydroxyl radical production. The permeation flux of g-C3N4/TiO2（001）-PVDF membrane was still 264 L·m‒2·h‒1 after a 360 min continuous experiment. High rejection efficiency and permeation flux were always maintained in the 8 cycles of regeneration experiments. Obviously， the photocatalytic membrane with exposed TiO2（001） has a greater permeability， selectivity， and stability， which is more appropriate for the effective separation of oil-water wastewater. Table and Figures | Reference | Related Articles | Metrics

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Fabrication and Properties of Epoxy Vitrimer Based on Multiply Dynamic Covalent Bonds YANG Weiming, XI Aoqian, YANG Bin, ZENG Yanning Chem. J. Chinese Universities    2022, 43 (11): 20220308-.   DOI: 10.7503/cjcu20220308 Abstract （561）   HTML （25）    PDF（pc） （8349KB）（2407）       Knowledge map    Save Traditional epoxy networks were wildly applied in composites， adhesives， coatings， electronic packaging and insulating materials， due to their excellent properties and stable network structure. However， once epoxy networks are formed， they cannot be reprocessed. When epoxy networks are damaged during the serving time， they cannot be self-healed. Epoxy vitrimers networks with dynamic reversible covalent bonds can reorganized their network typology under external stimuli， contributing to network reprocessing and self-healing. Currently， most epoxy vitrimers show a high temperature for reprocessing and self-healing， consuming high energy. Herein， the epoxy vitrimers with tri-dynamic covalent bonds（boronic ester bond， disulfide bond and ester bond） were fabricated by epoxy-thiol “click” reaction and epoxy-carboxylic acid reaction. The structures of the prepared epoxy vitrimers were characterized by Fourier transform Infrared spectrometer（FTIR） and Raman spectroscopy， and hydrogen bonds were found in the prepared epoxy vitrimers contributing to improvement of crosslink density. Meanwhile， the thermal stability， thermo-mechanical properties and mechanical properties of the prepared epoxy vitrimers were investigated by thermogravimetry（TG）， dynamic mechanical analysis（DMA） and tensile testing. Furthermore， self-healing， welding， shape memory and reprocessing capabilities of the prepared epoxy vitrimers were researched. The results display that at 80 ℃ the scratches on the prepared epoxy vitrimers can be fully recovered and the welding recovery of tensile strength of the prepared epoxy vitrimers is >80%， indicating excellent functionality. Table and Figures | Reference | Related Articles | Metrics

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First-principles Study of Direct Z-scheme In2SSe/Sb Heterostructure as Photocatalyst for Water Splitting CAO Shengzhe, HUANG Xin, YANG Zhihong Chem. J. Chinese Universities    2023, 44 (8): 20230145-.   DOI: 10.7503/cjcu20230145 Abstract （365）   HTML （11）    PDF（pc） （5725KB）（1094）       Knowledge map    Save The photocatalytic properties of two-dimensional In2SSe/Sb van der Waals heterostructure were investi-gated via first-principles method. The results show that In2SSe/Sb heterostructure possesses the staggered band alignments with a direct band gap of 0.82 eV. As the built-in electric field is pointing from Sb to In2SSe at the interface， the In2SSe/Sb heterostructure exhibits type-Z mode， which is beneficial for effective electron-holes separations. Moreover， its band edges straddle water redox potentials and a strong optical absorption spectrum from visible light to ultraviolet light is obtained. Our study would offer theoretical understanding for designing In2SSe/Sb van der Waals heterostructure. Table and Figures | Reference | Related Articles | Metrics

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Sequencing Methods for Detection of Nucleic Acid Epigenetic Modifications FANG Xin, ZHAO Ruiqi, MO Jing, WANG Yafen, WENG Xiaocheng Chem. J. Chinese Universities    2023, 44 (3): 20220342-.   DOI: 10.7503/cjcu20220342 Abstract （823）   HTML （37）    PDF（pc） （9770KB）（889）       Knowledge map    Save All the somatic cells in an organism share the same genetic information， but have different RNA expression subsets. Only part of genes are expressed and perform their functions at a specific time. In recent years， breakthroughs in epigenetic research have helped people understand the regulation of gene expression to a certain extent. Three types of biological macromolecules： DNA， RNA， and protein， are chemically modified after synthesis. These modifications involve the regulation of almost all biological processes. So far， researchers have identified more than 17 and 160 chemical modifications in DNA and RNA， respectively. The interest in various biological functions of DNA and RNA modifications has promoted the development of the frontier fields of epigenomics and epigenomics. Developing chemical and biological tools to detect specific modifications in the genome or transcriptome is an issue of great concern to us， and it is also a key to the research of epigenomics and epitranscriptomics. Herein， we summarize the detection methods of nucleic acid modifications， and put forward some bottlenecks in the existing technologies and possible innovative methods. Table and Figures | Reference | Related Articles | Metrics

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Advances of Multifunctional Deoxyribozyme in Biomedical Analysis WANG Qing, HE Yuqiu, WANG Fuan Chem. J. Chinese Universities    2021, 42 (11): 3334-3356.   DOI: 10.7503/cjcu20210449 Abstract （1014）   HTML （32）    PDF（pc） （4427KB）（2874）       Knowledge map    Save Deoxyribozymes（DNAzymes） are synthetic deoxynucleotide oligomers with enzyme-like activities identified through in vitro SELEX selection technology. DNAzymes have been widely explored in a broad range of applications， notably in biosensing and biomedical devices， owing to their easy synthesis and modification， stable chemical structure and excellent catalytic activity. Regulating the activity of DNAzymes is the key for exploring its potential utilization in many fields， and the flexible control will dramatically promote the application of DNAzymes. In this review， we summarize some methods for the regulation of DNAzymes activity and introduce their main applications in biomedical analysis. It is believed that DNAzymes will play a critical role in chemistry and medicine in the future. Table and Figures | Reference | Related Articles | Metrics

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Synthesis of Nanospherical Mo-MOF Materials for Catalytic Selective Oxidation of Thioethers GUO Haotian, LU Xinhuan, SUN Fanqi, TAO Yiyuan, DUAN Jingui, ZHANG Wang, ZHOU Dan, XIA Qinghua Chem. J. Chinese Universities    2023, 44 (12): 20230408-.   DOI: 10.7503/cjcu20230408 Abstract （494）   HTML （25）    PDF（pc） （9319KB）（995）       Knowledge map    Save Metal-organic framework materials are composite materials composed of inorganic metal ions and organic ligands， which have high metal dispersion and catalytic activity. In this paper， an organic framework material Mo-MOF was synthesized using molybdic acid as molybdenum source and terephthalic acid as ligand by static mixed solvothermal crystallization method. The morphology， structure and composition of the materials were characterized by X-ray diffraction（XRD）， Fourier exchange infrared spectroscopy（FTIR）， scanning electron microscopy（SEM） and X-ray photoelectron spectroscopy（XPS）. Mo-MOF catalysts synthesized by static mixed solvothermal method （water and ethanol） showed the best catalytic activity， with 100% conversion of conversion of diphenylthioether and 86.4% selectivity of diphenylsulfoxide in the selective oxidation using oxygen without other additives. Table and Figures | Reference | Related Articles | Metrics

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Electrochemiluminescence of Quantum Dots: Research Progress and Future Perspectives CAO Zhiyuan, SUN Hui, SU Bin Chem. J. Chinese Universities    2020, 41 (9): 1945-1955.   DOI: 10.7503/cjcu20200390 Abstract （1847）   HTML （64）    PDF（pc） （5697KB）（1661）       Knowledge map    Save Electrochemiluminescence(ECL) has become one of the most advanced immunodiagnostic method due to its near-zero background and high sensitivity. Ruthenium(Ⅱ) tris(bipyridine)[Ru(bpy)32+] and its derivatives have been applied in commercial diagnostics, but their optical properties can not meet the requirement of state-of-art ECL analysis. Quantum dots(QDs) possess outstanding luminescence properties and seem to be ideal for developing a new generation of ECL emitters. However, the mechanism of ECL generation from QDs deserves further in-depth investigations and the ECL performance of QDs also needs to be improved. In this review, we focus on the important advancements and key scientific issues of QDs ECL. After an overview of the developments of the field, future perspectives about the developments of QDs ECL are also exhibited. We believe that spectroscopy, synthesis chemistry and electrochemistry should be combined together to advance the research. Table and Figures | Reference | Related Articles | Metrics

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Solvent Effect on the Catalytic Performance of Cinnamaldehyde Hydrogenation over Pt/MIL-100（Fe） CAI Jiani, LIU Yingya, SUN Zhichao, WANG Yao, WANG Anjie Chem. J. Chinese Universities    2024, 45 (2): 20230442-.   DOI: 10.7503/cjcu20230442 Abstract （271）   HTML （14）    PDF（pc） （3974KB）（942）       Knowledge map    Save This study employs an environmentally-friendly method to synthesize MIL-100（Fe）， and utilizes a double-solvent impregnation approach to confine Pt nanoparticles within the pores of MIL-100（Fe）， subsequent to acidification with HCl and reduction with formaldehyde， a bifunctional catalyst， Pt/MIL-100（Fe）， featuring hydrogenation and Lewis acid centers， is prepared. The catalytic performance is evaluated using the selective hydrogenation of cinnamaldehyde（CAL） as a probe reaction. Under optimal conditions（60 ℃， 1 MPa H2）， the conversion of CAL reaches 88.3% in 2 h， with a cinnamyl alcohol（COL） selectivity of 84.9%. By comparing the reaction performance of Pt/MIL-100 catalysts with Cr， Al and Fe metal centers， it is revealed that the Fe center favors for the hydrogenation of C=O bonds in both CAL to COL and furfural to furfuryl alcohol. The impact of water content in the reaction system on the selective hydrogenation of CAL is extensively studied. Characterization and static adsorption experiments indicate that removal of free water from the pores of Pt/MIL-100（Fe） facilitates direct enrichment of CAL in the channels， leading to an enhanced conversion. Additionally， removal of coordinated water from the Fe cluster promotes the adsorption of the C=O group of CAL， resulting in an improved selectivity toward COL. After five catalytic cycles under optimal conditions， Pt/MIL-100（Fe） maintains the catalytic performance. Results of powder X-ray diffraction （XRD）， transmission electron microscopy （TEM）， and low-temperature nitrogen adsorption characterization confirm the stability of the catalyst structure after reaction. Table and Figures | Reference | Supplementary Material | Related Articles | Metrics

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Research Progress on the Synthesis of Pillar[n]arenes and Their Host-guest Chemistry WANG Kai, YANG Ying-Wei, ZHANG Sean Xiao-An Chem. J. Chinese Universities    2012, 33 (01): 1-13.   DOI: 10.3969/j.issn.0251-0790.2012.01.001 Abstract （7956）      PDF（pc） （951KB）（3443）       Knowledge map    Save Pillararenes are a new class of host molecules, which are cyclic oligomers consisting of hydroquinones or 1,4-disubstituted hydroquinone ethers linked by methylene bridges in the para positions of the benze rings. Herein, recent development on the synthesis of pillar[n]arenes and pillar[n]arene derivatives, and their host-guest chemistry, i.e., molecular recognition and selective binding towards guest molecules, and their self-assembly properties was reviewed. In addition, prospects for future research based on pillar[n]arenes were also discussed. Reference | Related Articles | Metrics

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Multi-stage Thermal Decomposition Mechanism of Energetic Plasticizer DNTN Triggered by Cleavage of the Nitrate Ester Bond CAO Huawen, TANG Qiufan, QU Bei, HUO Huan, ZHENG Qilong, CAO Yilin, LI Jizhen Chem. J. Chinese Universities    2024, 45 (2): 20230398-.   DOI: 10.7503/cjcu20230398 Abstract （293）   HTML （15）    PDF（pc） （5514KB）（886）       Knowledge map    Save 2，3-Bis（hydroxymethyl）-2，3-dinitro-1，4-butanediol tetranitrate（DNTN） is energetic material， which is the densest nitrate. The unclear thermal decomposition mechanism of DNTN has seriously hindered its application in propellants. The thermal decomposition process of DNTN was investigated by a combination of reactive force field molecular dynamics（ReaxFF MD） simulation， solid-phase in situ infrared spectroscopy（in situ IR） and TG-DSC- FTIR-MS simultaneous techniques， and the gas and solid products of the thermal decomposition were analysed， the thermal decomposition mechanism was elucidated. The results showed that the decomposition of DNTN was revealed that the process occurred in three stages. During the first stage from 127 ℃ to 147 ℃， the O—N bond in DNTN was partially broken， releasing a minor amount of NO2 gas. In the second stage， between 147 ℃ and 220 ℃， DNTN underwent rapid decomposition， removing the nitro groups and decomposing the quaternary carbon skeleton， accompanied by the formation and cleavage of the microcyclic structure， releasing a large amount of gases such as NO2 and CO2， and at the same time emitting a large amount of heat. The third stage， taking place within the temperature range of 240—350 ℃， involved the high temperature pyrolysis of the remaining solid product of DNTN， which resulted in a limited release of CO2 gas， and above 300 ℃， the remaining solid phase material would further react to result in the production of cyano. In this paper， the thermal decomposition mechanism of DNTN was illustrated from a multistage perspective， which had important guiding significance for its application in propellants and the follow-up research on stability mechanism. Table and Figures | Reference | Supplementary Material | Related Articles | Metrics

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Application of 2D NMR in Organic Photovoltaics CHEN Hongru, BAI Yang, ZHOU Qiuju, ZHANG Zhiguo Chem. J. Chinese Universities    2023, 44 (7): 20230104-.   DOI: 10.7503/cjcu20230104 Abstract （368）   HTML （12）    PDF（pc） （8803KB）（949）       Knowledge map    Save Two-dimensional nuclear magnetic resonance technique（2D NMR） plays a crucial role in the structural analysis of complex organic compounds. Analyzing the correlation signals of 2D NMR spectra could help us obtain the information about intra- and inter-molecular interactions. Meanwhile， it is significant to study molecular interaction between photoactive layer materials for organic photovoltaics. Such interaction can help us not only analyze the aggregation behavior of molecules， but also understand the changes in the morphology and stability of the active layer upon the addition of a third component. In this review， we provide relevant introduction on the 2D NMR spectrum， and summarize the related works on the use of 2D NMR in the analyzing the interaction between molecules in organic solar cells. Finally， It offers a perspective on the future development in this technique. Table and Figures | Reference | Related Articles | Metrics

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Progress of Graphene Oxide/Polymer Composite Hydrogel LI Peihong, ZHANG Chunling, DAI Xueyan, SUI Yanlong Chem. J. Chinese Universities    2021, 42 (6): 1694-1703.   DOI: 10.7503/cjcu20200869 Abstract （1824）   HTML （83）    PDF（pc） （6667KB）（1410）       Knowledge map    Save Graphene oxide（GO） is a popular two-dimensional material with excellent mechanical properties， good water dispersibility， non-toxicity， and good biocompatibility， and its surface has a large number of oxygen-containing functional groups. Therefore， GO is an ideal hydrogel raw material. Hydrogel is a multi- element system with a three-dimensional network structure and water as the filling medium. The introduction of GO into the hydrogel system can improve the mechanical properties of the hydrogel and enrich its stimulus response types. At present， GO hydrogel has excellent performance in many fields such as high strength， adsorption， self-healing materials and sensors， and has become one of the research hotspots. The research of GO hydrogel has a history of ten years. In this review， the preparation methods of GO hydrogels are summarized， including acidification and the addition of polymers， small organic molecules or ions as crosslinking agents. Among them， GO/polymer composite hydrogels prepared by physical mixing and chemical crosslinking and polymerization methods are the most common. The response mechanism and research progress of smart GO hydrogels are summarized in terms of photo-thermal response， pH response and self-healing. The application prospects of GO hydrogels in high strength hydrogels， biomedicine science， smart materials and sewage treatment are reviewed. Table and Figures | Reference | Related Articles | Metrics

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Research Progress of CO2 Hydrogenation over Pd-based Heterogeneous Catalysts ZHOU Leilei, CHENG Haiyang, ZHAO Fengyu Chem. J. Chinese Universities    2022, 43 (7): 20220279-.   DOI: 10.7503/cjcu20220279 Abstract （692）   HTML （44）    PDF（pc） （3133KB）（1086）       Knowledge map    Save With the continuous increase of carbon dioxide（CO2） emissions， the impact of global warming and climate change on human life and ecological environment has become more serious. As a cheap and renewable carbon and oxygen resource， converting CO2 into high value-added chemicals is one of the shining research topics in the field of green chemistry and energy， and has received extensive attention. The Pd-based catalysts are one kind of the most promising catalysts of CO2 catalytic conversion due to its excellent hydrogenation capacity， good stability， anti- sintering and anti-poisoning properties. This paper will review the research progress of the hydrogenation of CO2 over Pd-based catalysts to synthesis small energy molecule compounds such as HCOOH， CO， CH4 and methanol. We will pay main attention to the discussion of the active sites for the adsorption/activation of CO2 molecule， strong metal- support interaction， surface and interface composition， which affect the activity and selectivity of Pd-based catalysts， as well as the catalytic mechanism over Pd-based catalysts. Table and Figures | Reference | Related Articles | Metrics

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Advances in Alloy-based High-capacity Li-containing Anodes for Lithium-ion Batteries MAO Eryang, WANG Li, SUN Yongming Chem. J. Chinese Universities    2021, 42 (5): 1552-1568.   DOI: 10.7503/cjcu20200750 Abstract （1311）   HTML （66）    PDF（pc） （7469KB）（2131）       Knowledge map    Save The emergent Li-containing alloys（LixMy， M refers to metal or nonmetal element that can react with Li to form alloys） is a class of promising electrode materials for next-generation high energy lithium-ion batteries. They deliver high theoretical specific capacities that are several times that of current graphite and can act as active lithium suppliers that are different from traditional lithium-free alloy anodes（Si， Sn， P， etc.）. The LixMy anodes can pare with high-capacity Li-free cathodes（such as Sulfur， O2， FeF3， V2O5， etc.） to develop a new full battery system. In this paper， researches on Li-containing alloy-based high-capacity anodes LixMy（e.g.， Li4.4Si， Li4.4Sn， Li3P， Li2.25Al， etc.） were reviewed. Scientific challenges and technical difficulties of LixMy anodes were systematically analyzed and discussed. Various methods for materials synthesis and electrodes fabrication were summarized. Furthermore， various full-cell configurations based on LixMy anodes were introduced， including Li-ion batteries（LIBs）， Li-ion-sulfur batteries（LISBs）， and Li-ion-oxygen batte-ries（LIOBs）. Moreover， research strategies and achievements on addressing the challenges of LixMy anodes and improving their performance were discussed， including composition adjustment， surface coating， material composite， electrode treatment， and electrolyte engineering， etc. Also， perspectives and new insights for the future development of LixMy anodes are proposed. Table and Figures | Reference | Related Articles | Metrics