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Rapid Self-healing and Strong Adhesive Elastomer via Supramolecular Aggregates from Core-shell Micelles of Silicon Hydroxyl-functionalized cis-Polybutadiene

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Chinese Journal of Polymer Science 2023年第1期41卷 84-94页

作者： ying-ying Zheng Han Zhu yi Tan feng-yi-Qi liu yi-Xian Wu State Key Laboratory of Chemical Resource Engineering Beijing Advanced innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing100029China

Liquid trimethoxy silane-functionalized cis-polybutadiene(cis-PB-Si(OMe)3),possessing number-average molecular weights of cis-PB segments(Mn,PB)ranging from 1800 g/mol to 5400 g/mol,with cis-1,4 content of ca.80%and high functionality(>96%)could be synthesized by coordination copolymerization of living cis-PB chain ends with ethenyltrimethoxy-silane with neodymium-based catalytic *** silicon hydroxyl-functionalized cis-polybutadiene(cis-PB-Si(OH)_(3))-based micelles in water have been achieved by in situ hydrolysis of cis-PB-Si(OMe)_(3)in hexane/water mixture(pH=6.8)at 70℃and by sequential removal of residue *** size of the above micelles with soft elastic cis-PB cores could be remarkably enlarged by loading SiO_(2)nanoparticles on their surfaces via hydrogen bonding *** supramolecular long chain aggregates or networks formed by hydrogen bonding interaction and possible O—Si—O chemical bonds between cis-PB-Si(OH)3-based micellar surfaces had relatively large size and thus precipitated from water after several months of storage,leading to production of cis-PB-Si(OH)_(3)solid elastomer with extremely low T_(g)at−107.0℃.The left cis-PB-Si(OH)_(3)-based micelles in water with relatively small size gradually formed the water-insoluble cis-PB-Si(OH)_(3)-based supramolecular aggregates or *** cis-PB-Si(OH)_(3)-based supramolecular elastomer exhibited excellent self-healing property within 60 s at 25℃.The elastomer(20 mg)in a joint of 25 mm×30 mm(2.7 mg/cm^(2))provided very strong adhesion for two pieces of glass and the bound glass keep unchanged at room temperature for 98 h even hung with 100 g of steel column *** cis-PB-Si(OH)3-based supramolecular elastomer would have potential applications in adhesives,self-healing materials,damping materials and elastic materials.

关键词： Amphiphilicity Polybutadiene Core-shell micelles Supramolecular aggregates

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Deformation of Rigid Conjugate Self-dual Galois Representations

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Acta Mathematica Sinica,English Series 2024年第7期40卷 1599-1644页

作者： yi feng liu yi Chao TIAN Liang XIAO Wei ZHANG Xin Wen ZHU Institute for Advanced Study in Mathematics Zhejiang UniversityHangzhou 310058P.R.China Morningside Center of Mathematics AMSSChinese Academy of SciencesBeijing 100190P.R.China New Cornerstone Lab Beijing International Center for Mathematical ResearchPeking Ui Beijing 100871P.R.China Department of Mathematics Massachusetts Institute of TechnologyCambridge MA 02139United States Department of Mathematics Stanford UniversityStanfordCA 94305United States

In this article,we study deformations of conjugate self-dual Galois *** study is ***,we prove an R=T type theorem for a conjugate self-dual Galois representation with coefficients in a finite field,satisfying a certain property called ***,we study the rigidity property for the family of residue Galois representations attached to a symmetric power of an elliptic curve,as well as to a regular algebraic conjugate self-dual cuspidal representation.

关键词： Galois deformation rigid conjugate self-dual Galois representations

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The Effect of Potassium Citrate on Simultaneous Growth of Calcium Oxalate Mono-, Di-, and Trihydrate in Synthetic Urine

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Chinese Chemical Letters 2006年第5期17卷 687-690页

作者： yi Ming liu feng Xin WANG Sui Ping DENG Jian Ming OUYANG Institute of Biomineralization and Lithiasis Research Jinan University Guangzhou 510632

The inducing effect of potassium citrate （K3cit） on simultaneous growth of calcium oxalate mono-（COM）, di-（COD）, and trihydrate （COT） crystals in synthetic urine was observed with double diffusion gelatinous technique. K3cit can induce the formation of COD and COT, inhibit the aggregation and decrease the surface area of COM crystals. It supported the clinical use of K3cit and may provide important clues to this disease in cure and in search for new drugs.

关键词： Calcium oxalate potassium citrate biomineralization urinary stone gel.

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In situ Raman spectroscopic quantification of CH4–CO2 mixture: application to fluid inclusions hosted in quartz veins from the Longmaxi Formation shales in Sichuan Basin, southwestern China

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Petroleum Science 2020年第1期17卷 23-35页

作者： Ye Qiu Xiao-Lin Wang Xian liu Jian Cao yi-feng liu Bin-Bin Xi Wan-Lu Gao School of Earth Sciences and Engineering Nanjing UniversityNanjing 210023JiangsuChina Ocean College Zhejiang UniversityZhoushan 316021ZhejiangChina Wuxi Research Institute of Petroleum Geology SINOPECWuxi 214151JiangsuChina

We re-evaluate the Raman spectroscopic quantification of the molar ratio and pressure for CH4–CO2 ***,the Raman quantification factors of CH4 and CO2 increase with rising pressure at room temperature,indicating that Raman quantification of CH4/CO2 molar ratio can be applied to those fluid inclusions(FIs)with high internal pressure(i.e.,>15 MPa).Secondly,the v1(CH4)peak position shifts to lower wavenumber with increasing pressure at constant temperature,confirming that the v1(CH4)peak position can be used to calculate the fluid ***,this method should be carefully calibrated before applying to FI analyses because large discrepancies exist among the reported v1(CH4)-P curves,especially in the highpressure *** calibrations are applied to CH4-rich FIs in quartz veins of the Silurian Longmaxi black shales in southern Sichuan *** vapor phases of these FIs are mainly composed of CH4 and minor CO2,with CO2 molar fractions from4.4%to 7.4%.The pressure of single-phase gas FI ranges from 103.65 to 128.35 MPa at room temperature,which is higher than previously *** calculations supported the presence of extremely high-pressure CH4-saturated fluid(218.03–256.82 MPa at 200°C),which may be responsible for the expulsion of CH4 to adjacent reservoirs.

关键词： Raman spectroscopy Molar ratio Fluid pressure CO2–CH4 mixture Fluid inclusion Paleo-overpressure

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Hybrid Luminescent Films Obtained by Covalent Anchoring Terbium Complex to Silica-based Network

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Chinese Chemical Letters 2002年第10期13卷 991-992页

作者： feng yi liu Lian She FU Jun WANG Huan Rong LI Hong Jie ZHANG Key Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022

New monomer N-(4-carboxyphenyl)-NL-(propyltriethoxysilyl)urea (1) which acts as both a ligand for Th3+ ion and a sol-gel precursor has been synthesized and characterized by H-1 NMR, and MS. Hybrid luminescent thin films consisting of organoterbium covalently bonded to a silica-based network have been obtained in situ via a sol-gel approach. Strong line emission of Tb3+ ion was observed from the hybrid luminescent films under UV excitation.

关键词： Hybrid thin film luminescence sol-gel.

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Basonuclin 1 deficiency causes testicular premature aging: BNC1 cooperates with TAF7L to regulate spermatogenesis

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Journal of Molecular Cell Biology 2020年第1期12卷 71-83页

作者： Jing-yi Li yi-feng liu Hai-Yan Xu Jun-Yu Zhang Ping-Ping Lv Miao-E liu Yan-Yun ying Ye-Qing Qian Kun Li Cheng Li Yun Huang Gu-feng Xu Guo-Lian Ding Yu-Chan Mao Chen-Ming Xu Xin-Mei liu Jian-Zhong Sheng Dan Zhang He-feng Huang Key Laboratory of Reproductive Genetics(Ministry of Education)and Department of Reproductive Endocrinology Women's HospitalZhejiang University School of MedicineHangzhou 310006China International Peace Maternal and Child Health Hospital Shanghai Jiao Tong UniversityShanghai 200030China Department of Pathology&Pathophysiology Zhejiang University School of MedicineHangzhou 310000China

Basonuclin(BNC1)is expressed primarily in proliferative keratinocytes and gametogenic ***,its roles in spermatogenesis and testicular aging were not *** we discovered a heterozygous BNC1 truncation mutation in a premature ovarian insufficiency *** this study,we found that male mice carrying the truncation mutation exhibited progressively fertility loss and testicular premature ***-wide expression profiling and direct binding studies(by chromatin immunoprecipitation sequencing)with BNC1 in mouse testis identified several spermatogenesis-specific gene promoters targeted by BNC1 including kelch-like family member 10(Klhl1O),testis expressed 14(Tex14)9 and spermatogenesis and centriole associated 1(Spatcl).Moreover,biochemical analysis showed that BNC1 was associated with TATA-box binding protein-associated factor 7 like(TAF7L),a germ cell-specific paralogue of the transcription factor IID subunit TAF7,both in vitro and in testis,suggesting that BNC1 might directly cooperate with TAF7L to regulate *** truncation mutation disabled nuclear translocation of the BNC1/TAF7L complex,thus,disturbing expression of related genes and leading to testicular premature ***,expressions of Y-box-binding protein 2(YBX2),outer dense fiber of sperm tails 1(ODfl),and glyceraldehyde-3-phosphate dehydrogenase,spermatogenic(GAPDHS)were significantly decreased in the testis of men with non-obstructive *** present study adds to the understanding of the physiology of male reproductive aging and the mechanism of spermatogenic failure in infertile men.

关键词： testicular aging spermatogenesis BNC1 TAF7L gene mutation

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Layered oxide cathodes for sodium-ion batteries:microstructure design,local chemistry and structural unit

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Science China Chemistry 2024年第1期67卷 191-213页

作者： Ling-yi Kong Han-Xiao liu Yan-Fang Zhu Jia-Yang Li Yu Su Hong-Wei Li Hai-Yan Hu yi-feng liu Ming-Jing Yang Zhuang-Chun Jian Xin-Bei Jia Shu-Lei Chou Yao Xiao Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China

Because of the low price and abundant reserves of sodium compared with lithium,the research of sodium-ion batteries(SIBs)in the field of large-scale energy storage has returned to the research *** oxides distinguish themselves from the mains cathode materials of SIBs owing to their advantages such as high specific capacity,simple synthesis route,and environmental ***,the commercial development of the layered oxides is limited by sluggish kinetics,complex phase transition and poor air *** on the research ideas from macro-to micro-scale,this review systematically summarizes the current optimization strategies of sodium-ion layered oxide cathodes(SLOC)from different dimensions:microstructure design,local chemistry regulation and structural unit *** the dimension of microstructure design,the various structures such as the microspheres,nanoplates,nanowires and exposed active facets are prepared to improve the slow kinetics and electrochemical ***,from the view of local chemistry regulation by chemical element substitution,the intrinsic electron/ion properties of SLOC have been enhanced to strengthen the structural ***,the optimization idea of endeavors to regulate the physical and chemical properties of cathode materials essentially is put forward from the dimension of structural unit *** opinions and strategies proposed in this review will provide some inspirations for the design of new SLOC in the future.

关键词： sodium-ion batteries layered oxide cathodes microstructure design local chemistry structural unit

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Experiments and reaction characteristics of liquid phase simultaneous removal of SO_2 and NO

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Science China(Technological Sciences) 2009年第6期52卷 1768-1775页

作者： ZHAO yi,liu feng,GUO TianXiang & ZHAO yin School of Environmental Science and Engineering,North China Electric Power University,Baoding 071003,China 1. School of Environmental Science and Engineering North China Electric Power University Baoding 071003 China

Experiments of simultaneous removal of SO2 and NO from simulated flue gas,using NaClO2 solution as the absorbent,were carried out in a self-designed bubble reactor,and high simultaneous removal effi-ciencies of SO2 and NO were obtained under the optimal experimental *** mechanism of simultaneous removal based on NaClO2 acid solutions was proposed by analyzing the removal *** and limitation of the desulfurization and denitrification using NaClO2 acid solutions were calculated by thermodynamic *** results of reaction kinetics for simultaneous desulfurization and denitrification indicated that the oxidation-absorption processes of SO2 and NO were divided into two zones,namely the fast and slow reaction *** the slow reaction zones both were zero order reactions,and in the fast reaction zones,the reaction order,rate constant and activa-tion energy of SO2 reaction with absorbent were 1.4,1.22(mol.L-1)-0.4.s-1 and ***-1,respec-tively,and 2,3.15×103(mol.L-1)-1.s-1,and 42.50 ***-1 for NO reaction,respectively.

关键词： sodium chlorite simultaneous removal of SO2 and NO kinetics experiments

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Network pharmacology research of mechanism of Maxing Shigan Decoction in treating COVID-19

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Quantitative Biology 2023年第1期11卷 94-103页

作者： Xian-Fang Wang Zhi-Yong Du Qi-Meng Li yi-feng liu Shao-Hui Ma Jui-Wei Cui School of Computer Science and Technology Henan Institute of TechnologyXinxiang 453003China School of Sanquan Xinxiang Medical UniversityXinxiang 453003China School of Computer and Information Engineering Henan Normal UniversityXinxiang 453003China School of the First Clinical Xinxiang Medical UniversityXinxiang 453003China

Background:The COVID-19 has a huge negative impact on people’s *** Chinese Medicine(TCM)has a good effect on viral *** is of great practical significance to study its ***:The ingredients and targets of each herb in Maxing Shigan Decoction which obtained from Traditional Chinese Medicine Systems Pharmacology(TCMSP)database,and the related targets of COVID-19 were screened by GeneCards database based on the network *** was used to analyze the intersection target between active ingredients and *** software was used to construct an active ingredient-disease target *** protein-protein interaction network was constructed by STRING database and Cytohubba was used to screen out the key *** Ontology(GO)functional enrichment analysis and KEGG pathway analysis were performed by DAVID ***:In this study,a total of 134 active ingredients and 229 related targets,198 targets of COVID-19 and 48 common targets of drug-disease were *** items and pathways were obtained through GO and KEGG pathway *** predicted active ingredients were quercetin,kaempferol,luteolin,naringenin,glycyrol,and the key targets involved IL6,MAPK3,MAPK8,CASP3,IL10,*** results showed that the active ingredients of Maxing Shigan Decoction acted on multiple targets which played roles in the treatment of COVID-19 by regulating inflammation,immune system and other ***:The main contribution of this paper is to use data to mine the principles of the treatment of COVID-19 from the pharmacology of these prescriptions,and the results can be provided theoretical reference for medical workers.

关键词： network pharmacology PPI Maxing Shigan Decoction COVID-19 target

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One-step controlled electrodeposition nickel sulfides heterointerfaces favoring the desorption of hydroxyl groups for efficient hydrogen generation

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Rare Metals 2024年第9期43卷 4377-4386页

作者： Ru-Chun Li Xin-Yue Zhang Ze-Yue Qu feng-yi liu Quan-Qing Xu Zhao-Xia Hu Jing-Wei Li Mohamed-Nawfal Ghazzal Jin-Li Yu Faculty of Chemistry and Chemical Engineering Yunnan Normal UniversityKunming 650500China Foshan Gaoke Hechuang Technology Co. Ltd.Foshan 528200China School of Chemistry and Chemical Engineering Guangzhou UniversityGuangzhou 510006China Universite Paris-Saclay UMR 8000 CNRSInstitut de Chimie PhysiqueOrsay 91405France Department of Chemistry City University of Hong KongHong Kong 999077China

The heterointerface engineering involving different components or phases represents a desirable strategy for enhancing the sluggish kinetics of hydrogen evolution reaction(HER).However,constructing desired heterointerfaces and elucidating the reaction mechanisms on the interface remains a considerable *** this work,we propose a straightforward electrochemical synthesis strategy to prepare the nickel sulfide-based heterointerfaces for *** mechanism of electrochemical synthesis is revealed,wherein metal-thiourea species can be formed at the cathode potential and subsequently oxidized to nickel sulfides at the anode *** this mechanism,a range of nickel sulfides,including NiS,Ni_(3)S_(2)/NiS,Ni/Ni_(3)S_(2)and Ni_(3)S_(2),have been successfully synthesized by tuning the potential range of cyclic *** these,the obtained Ni_(3)S_(2)/NiS@CC(CC:carbon cloth)exhibits the smallest overpotential of84 mV at 10 mA·cm^(-2)and high *** calculations further reveal that the combination of NiS and Ni_(3)S_(2)induces electron redistribution at the interface,and thus the Volmer process is effectively promoted with faster water dissociation and OH desorption ***,the simplicity method coupled with a clear synthesis mechanism and outstanding HER performance highlights its promising potential for practical applications.

关键词： Hydrogen evolution reaction Heterointerfaces OH desorption kinetics Electrochemical synthesis

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