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chinese Journal of polymer Science 2002年第6期20卷 559-564页

作者： Zhi-min Zheng Cai-hong Xu Jian jiang Chang-yu ren Wei Gao Ze-min Xie center for molecular Science, institute of chemistry, chinese academy of sciences, beijing 100080, china center for molecular Science Institute of Chemistry Chinese Academy of Sciences 北京 100080

Silicone rubber (SIr) shows superior performance when used outdoors, but its surface can be transformed from inherently hydrophobic to hydrophilic by the adsorption of contaminants. Al(OH)(3), Al2O3, quartz powder and active carbon were selected as authentic contaminants. Hydrophobicity of the surface was determined using contact angle measurement. The results indicate that the adsorbability of the contaminants can strongly affect the hydrophobicity of contaminated SIr surface. The increasing rate of contact angle of specimens contaminated by Al(OH)(3) was much faster than that by Al2O3 and quartz due to the adsorption of migrated low molecular weight (LMW) polydimethylsiloxanes. Specimens contaminated by active carbon could achieve surface hydrophobicity within 15 min because active carbon has high adsorbability. Surfaces of contaminated ultrapure SIr, polytetrafluoroethylene (pTFE) and glass remain hydrophilic because they contain no mobile LMW components. The addition of oligomeric polydimethylsiloxanes has little effect on the hydrophobicity of contaminants covered on SIr surface.

关键词： hydrophobicity silicone rubber contact angle contamination

Applications of synchrotron-based X-ray techniques in environmental science

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Science china chemistry 2010年第12期53卷 2529-2538页

作者： LUO lei & ZHANG ShuZhen State Key Laboratory of Environmental chemistry and Ecotoxicology research center for Eco-Environmental sciences,chinese academy of sciences,beijing 100085,china State Key Laboratory of Environmental chemistry and Ecotoxicology research center for Eco-Environmental sciences Chinese Academy of Sciences Beijing China

Synchrotron-based X-ray techniques have been widely applied to the fields of environmental science due to their element-specific and nondestructive properties and unique spectral and spatial resolution *** techniques are capable of in situ investigating chemical speciation,microstructure and mapping of elements in question at the molecular or nanometer scale,and thus provide direct evidence for reaction mechanisms for various environmental *** this contribution,the applications of three types of the techniques commonly used in the fields of environmental research are reviewed,namely X-ray absorption spectroscopy (XAS),X-ray fluorescence (XrF) spectroscopy and scanning transmission X-ray microscopy (STXM).In particular,the recent advances of the techniques in china are elaborated,and a selection of the applied examples are provided in the field of environmental ***,the perspectives of synchrotron-based X-ray techniques are *** their great progress and wide application,the techniques have revolutionized our understanding of significant geo-and bio-chemical *** is anticipatable that synchrotron-based X-ray techniques will continue to play a significant role in the fields and significant advances will be obtained in decades ahead.

关键词： synchrotron spectroscopy spectromicroscopy environmental science

Controlled assembly of copper phthalocyanine with 1-iodooctadecane

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chinese Science Bulletin 2003年第15期48卷 1519-1524页

作者： lei Shengbin, WANG Chen, WAN Lijun & BAI Chunli center of molecular sciences, institute of chemistry, chinese academy of sciences, beijing 100080, china Correspondence should be addressed to Bai Chunli (e-mail: clbai@ ***) center of molecular sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China

The binary assembly behavior of 1-iodoocta- decane with substituted phthalocyanine (pc) is studied using the scanning tunneling microscopy (STM). By altering the substituted alkyl groups attached to the phthalocyanine ring, either uniform assembly or phase separation behavior can be observed. It is suggested that the strength of intermolecular interaction between phthalocyanine molecules is the determining factor for the assembly structure.

关键词：铜酞菁碘代十八烷扫描隧道电子显微镜化学结构

Bio-Inspired,Smart,Multiscale Interfacial Materials

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Bio-Inspired,Smart,Multiscale Interfacial Materials

Strong,tough,and thermally conductive nacre-inspired boron nitride nanosheet/epoxy layered nanocomposites

中国化学会第27届学术年会

作者： lei jiang center of molecular sciences institute of chemistry chinese academy of sciences beijing 100190 china

＜正＞Bio-inspired smart materials should be a "live" material with various functions like organism in Nature, they must have three essential elements as sense, drive and control. The studies

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Nano research 2024年第2期17卷 820-828页

作者： Huagao Wang rongjian Lu lei Li Cheng Liang Jia Yan rui Liang Guoxing Sun lei jiang Qunfeng Cheng School of chemistry Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of EducationBeihang UniversityBeijing 100191China School of chemistry and Materials Science University of Science and Technology of ChinaHefei 230026China Suzhou institute for Advanced research University of Science and Technology of ChinaSuzhou 215123China Department of Stomatology Fifth Medical CenterChinese PLA General HospitalBeijing 100039China Department of Engineering Science Faculty of Innovation EngineeringMacao University of Science and TechnologyAvenida Wai LongTaipaMacao 999078 China Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoAvenida da UniversidadeTaipaMacao 999078China institute of Energy Materials Science(IEMS) University of Shanghai for Science and TechnologyShanghai 200093China

Thermally conductive polymer nanocomposites integrated with lightweight,excellent flexural strength,and high fracture toughness(KIc)would be of great use in many ***,achieving all of these properties simultaneously remains a great *** by natural nacre,here we demonstrate a lightweight,strong,tough,and thermally conductive boron nitride nanosheet/epoxy layered(BNNEL)*** of the layered structure and enhancing the interfacial interactions through hydrogen bonding and Si–O–B covalent bonding,the resulting nacre-inspired BNNEL nanocomposites show high fracture toughness of~4.22 Mpa·m^(1/2),which is 7 folds as high as pure ***,the BNNEL nanocomposites demonstrate sufficient flexural strength(~168.90 Mpa,comparable to epoxy resin),while also being lightweight(~1.23 g/cm^(3)).Additionally,the BNNEL nanocomposites display a thermal conductivity(κ)of~0.47 W/(m·K)at low boron nitride nanosheet loading of 2.08 vol.%,which is 2.7 times higher than that of pure epoxy *** developed nacre-inspired strategy of layered structure design and interfacial enhancement provides an avenue for fabricating high mechanical properties and thermally conductive polymer nanocomposites.

关键词： nacre-inspiration nanocomposites flexural strength fracture toughness(KIc) thermal conductivity

Synthesize TiO_2 microspheres self-assembled from nanorods via hydrothermal treatment

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Science china chemistry 2007年第2期50卷 175-178页

作者： ZHANG YiBing1,2,FENG XinJian3 & jiang lei2,3 1 Shangrao Teachers’ College,Shangrao 334001,china 2 National center for Nanoscience and Nanotechnology,beijing 100080,china 3 institute of chemistry,chinese academy of sciences,beijing 100080,china Shangrao Teachers’ College Shangrao China National center for Nanoscience and Nanotechnology Beijing China institute of chemistry Chinese Academy of Sciences Beijing China

The TiO2 microspheres were deposited on the glass substrates under certain conditions via hydro-thermal reaction using 0.15 mol·L?1 TiCl3 saturated NaCl aqueous solution adding urea as an additive. The TiO2 is characterized rutile by results of SEM,TEM and XrD techniques,the TiO2 microspheres are large scale assembled from TiO2 nanorods. The affections on the products by the factors of the con-tents of urea being an additive(the key techniques) ,the reaction temperature,the reaction time and the concentration of TiCl3 were studied. The optimum condition was found,and the mechanism of reac-tions was discussed also.

关键词： TiO2 self-assembly nanorods microsphere hydrothermal reaction

Evolving molecular subtyping of breast cancer advances precision treatment

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Cancer Biology & Medicine 2024年第9期21卷 731-739页

作者： rui Shan lei-Jie Dai Zhi-Ming Shao Yi-Zhou jiang Department of Breast Surgery Fudan University Shanghai Cancer CenterShanghai 200032China Department of Oncology Shanghai Medical CollegeFudan UniversityShanghai 200032China

Breast cancer is the second most prevalent cancer *** 2022,approximately 2.3 million newly diagnosed cases of female breast cancer occurred worldwide,and more than 665 thousand people lost their lives to this disease^... 详细信息

关键词： breast cancer Breast

Biomimetic preparation of elastomeric fibers with micro/nano structures on the surfaces

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progress in Natural Science:Materials International 2012年第5期22卷 493-501页

作者： Quanyong Liu a,Liqun Zhang c,lei jiang a,b a Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education,School of chemistry and Environment,Beihang University,beijing 100191,pr china b beijing National Laboratory for molecular sciences(MNLMS),Key Laboratory of Organic Solids,institute of chemistry,chinese academy of sciences,beijing 100190,pr china c State Key Laboratory of Organic-Inorganic Composites,beijing University of Chemical Technology,beijing 100029,pr china Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry and Environment Beihang University Beijing 100191 PR China State Key Laboratory of Organic–Inorganic Composites Beijing University of Chemical Technology Beijing 100029 PR China beijing National Laboratory for molecular sciences (MNLMS) Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 PR China

Bioinspired by the spinning of spider silks,the biomimetic preparation of elastomeric fibers with micro/nano structures on the surfaces was attempted,and as a result,three types of ultrafine fullvulcanized powdered nitrile-butadiene rubber(UFpNBr)/thermoplastic polyurethane(TpU) fibers were *** first fiber was only decorated by the micron-sized grooves on the surface,and the second fiber was dotted by both the micron-sized grooves and nanometer-sized spheres on the surface,while the third fiber was helical and with a concave-convex *** biomimetic preparation mainly consisted of four steps,and the formation mechanism was described as an integrated mechanism of diffusion,coagulation,self assembly,and microphase *** micro/nano structures on the fibers were controlled by changing the mass ratio of UFpNBr to TpU and environment of vertical *** UFpNBr/TpU elastomeric fibers were hoped to have an integrated function of superhydrophobicity,self cleaning,and mechanical improvement of toughness or strength.

关键词： Biomimetic preparation Elastomeric fiber Micro/nano structure Self assembly Spider silk

Bioinspired Surfaces with Special Wettability

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Bioinspired Surfaces with Special Wettability