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Elimination of Surfactants and Small Dyes from Water with Silicasupported Dendritic Amphiphiles

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Chinese Journal of Polymer Science 2016年第1期34卷 59-68页

作者： Feng Chen 万德成 Ming Jin hong-ting pu Institute of Functional Polymers School of Materials Science and EngineeringTongji UniversityShanghai 201804China Key Laboratory of Advanced Civil Engineering Materials(Tongji University) Ministry of EducationShanghai 201804China

Silica-supported branched polyethylenimine（Sil@PEI） is a conventional adsorbent and shows a limited affinity to anionic surfactants and small dyes（K = 106？107 L/mol）. If the PEI is alkylated with cetyl groups（C16）, the K of the resulting adsorbents（Sil@PEI@C16-x, where x is the fraction of PEI units being alkylated） is significantly improved. Optimization shows that Sil@PEI@C16-0.15 can best reduce aqueous surfactants to a residue around 10？10 mol/L; while Sil@PEI@C16-0.6 can reduce even small aqueous dyes to a residue below 10？10 mol/L, nearly 105-fold lower than that by Sil@PEI. The adsorbents are well recyclable. It is believed that in the case of dyes, the dense cetyl shell can isolate the PEI from the bulky water and thus suppress the competitive binding by water; while in the case of surfactants, the semiclosed cetyl shell can simultaneously meet electrostatic complement and hydrophobic complement to the surfactants.

关键词： Dendritic amphiphile Water treatment Adsorbent Micropollutant Support

Homopolymerization of N-pyrimidinyl acrylamide

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Chinese Chemical Letters 2007年第9期18卷 1141-1144页

作者： De Cheng Wan hong ting pu Gen Jin Yang Institute of Functional Polymers School of Materials Science&EngineeringTongji UniversityShanghai 200092China School of Pharmacy The Second Military Medical UniversityShanghai 200433China

Homopolymerization of N-pyrimidinyl acrylamide (NPA) was reported for the first time. The polymer (polyNPA) was soluble only in acidic media and fluoroalcohols, and only in fluoroalcohol was homogeneous polymerization of NPA feasible. 1H NMR analysis proved that a 1:1 H-bonding complex could be formed between NPA and α,α-bis(trifluoromethyl)phenyl propan-2-ol (BTMP). Cumyl dithiobenzoate mediated reversible addition-fragmentation chain transfer (RAFT) polymerization of NPA in BTMP was carried out. 1H NMR analyses proved that the molecular weight increased linearly with the monomer conversion. The polymer prepared in conventional solvents was atactic while in protic media the syndiotacticity was slightly enhanced.

关键词： N-pyrimidinyl acrylamide H-Bonding Fluoroalcohol Homopolymerization RAFT

Foam/Film Alternating Multilayer Structure with High Toughness and Low Thermal Conductivity Prepared via Microlayer Coextrusion

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Chinese Journal of Polymer Science 2021年第5期39卷 566-572,I0006页

作者： Qi LUO hong-ting pu Zhi-Hua Zhang Xiong Zhang Cheng-Long Yu Department of Polymeric Materials School of Materials Science&EngineeringTongji UniversityShanghai 201804China Key Laboratory of Advanced Civil Engineering Materials(Ministry of Education) Tongji UniversityShanghai 201804China School of Physics Science and Engineering&Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology Tongji UniversityShanghai 200092China

Multilayer membranes prepared via microlayer coextrusion have attracted wide attention due to their unique properties and broad *** present study,the foam/film alternating multilayer sheets based on ethylene-vinyl acetate copolymer(EVA)and high-density polyethylene are successfully prepared via microlayer *** cells in the sheets are single-cell-array along the foamed EVA layers with uniform cell *** addition,the effects of layer number and foam relative thickness on morphology,mechanical properties,damping and heat insulation properties are *** cell size decreases significantly with increasing layer number due to the enhanced confine *** tensile strength,elongation at break,and heat insulation also increase ***,the mechanical damping properties change little in the observed ***,with higher relative thickness of EVA foam,the sheets have lower tensile strength and lower thermal conductivity,while the damping properties are enhanced in a specific frequency *** elongation at break of the optimized sample comes to 800%and the thermal conductivity decreases to 61 mW·m^(-1)·K^(-1),which shows high toughness and low thermal conductivity,indicating a possible method for preparing materials with high toughness and heat-insulating properties.

关键词： Multilayer Foam Coextrusion Toughness Thermal conductivity

Facile O-alkylation of highly hydrophilic hyperbranched polyglycerol

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Chinese Chemical Letters 2007年第2期18卷 192-194页

作者： De Cheng Wan Jun Jie Yuan Zheng Long Yang hong ting pu [a]Institute of Functional Polymer School of Materials Science and Engineering Tongji University Shanghai 200092 China

A facile and selective route for O-alkylation of highly hydrophilic, multifunctional hyperbranched polyglycerol (PG) under non-aqueous phase transfer catalyzed conditions in dimethyl sulfoxide was developed, through w... 详细信息

关键词： Hyperbranched polyglycerol O-Alkylation Phase transfer Selectivity

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形状记忆高分子材料的新型共混制备方法

高分子学报 2016年第1期26卷 14-24页

作者：杜江姚雪亮刘彦良万德成浦鸿汀同济大学材料科学与工程学院上海201804

形状记忆高分子材料(shape memory polymers,SMPs)作为一种特点突出、性能优良的智能材料具有极高的研究和实用价值,受到各国研究人员的广泛关注,新的制备方法和材料体系不断涌现,显示出巨大的发展潜力.本文总结了近年来出现的以共混方... 详细信息

形状记忆高分子材料(shape memory polymers,SMPs)作为一种特点突出、性能优良的智能材料具有极高的研究和实用价值,受到各国研究人员的广泛关注,新的制备方法和材料体系不断涌现,显示出巨大的发展潜力.本文总结了近年来出现的以共混方式为基础的多种重要制备方法,包括聚合物与聚合物直接熔融共混、溶液共混、借助增容剂或交联剂进行共混、通过新型微层共挤出技术进行交替层状共混、以及利用静电纺丝技术进行三维网络结构共混等.相较于化学合成方法,这些共混方法具有操作简单、原料易得、制备效率高、产品性能调节方便、制备过程更为环保等优点,并且能够得到与化学合成方法性能相同甚至更好的产品,优势突出,是今后制备形状记忆高分子材料的一大趋势.本文从这些新型共混材料的制备过程、微观结构、形状记忆性能等角度详细分析了不同方法的特点和优势.这些近年来出现的共混制备方法对于形状记忆高分子材料的发展和未来应用将是至关重要的.

关键词：形状记忆高分子材料共混制备方法相结构形状记忆性能

A new horizon for neuroscience:terahertz biotechnology in brain research

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Neural Regeneration Research 2025年第2期20卷 309-325页

作者： Zhengping pu Yu Wu Zhongjie Zhu hongwei Zhao Donghong Cui Shanghai Key Laboratory of Psychotic Disorders Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Department of Psychiatry Kangci Hospital of JiaxingTongxiangZhejiang ProvinceChina Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghaiChina Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied PhysicsChinese Academy of ScienceShanghaiChina National Facility for Protein Science in Shanghai Shanghai Advanced Research InstituteChinese Academy of SciencesShanghaiChina

Terahertz biotechnology has been increasingly applied in various biomedical fields and has especially shown great potential for application in brain *** this article,we review the development of terahertz biotechnology and its applications in the field of *** evidence indicates promising prospects for the use of terahertz spectroscopy and terahertz imaging techniques in the diagnosis of amyloid disease,cerebrovascular disease,glioma,psychiatric disease,traumatic brain injury,and myelin *** vitro and animal experiments have also demonstrated the potential therapeutic value of terahertz technology in some neuropsychiatric *** the precise underlying mechanism of the interactions between terahertz electromagnetic waves and the biosystem is not yet fully understood,the research progress in this field shows great potential for biomedical noninvasive diagnostic and therapeutic ***,the biosafety of terahertz radiation requires further exploration regarding its two-sided efficacy in practical *** review demonstrates that terahertz biotechnology has the potential to be a promising method in the field of neuropsychiatry based on its unique advantages.

关键词： biological effect brain neuron neuropsychiatry neuroscience non-thermal effect terahertz imaging terahertz radiation terahertz spectroscopy terahertz technology

Synthesis of core-shell structured polymers with inserted thioether from a multi-functional scaffold

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Chinese Chemical Letters 2007年第6期18卷 758-761页

作者： pu, hong ting Zhou, Qing Wan, De Cheng Tongji Univ Sch Mat Sci & Engn Inst Funct Polymers Shanghai 200092 Peoples R China

The synthesis of a thioether inserted, core-shell structured polymer from the scaffold of hyperbranched polyglycerol (PG) was described. PG was first allyl functionalized, and in the presence of AlBN, the allyl groups further underwent radical addition to thiol compounds, thus thiol functional polyethylene oxide monomether (MPEO) were grafted onto PG. Similarly, 2-mercaptoethylammonium chloride was introduced onto PG via thiol addition, and the residual amino groups were further quaternized with decyl bromide, leading to an amphiphilic core-shell structure polymer. (c) 2007 De Cheng Wan. published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： core-shell scaffold thioether radical addition hyperbranched polymer

NOX4 exacerbates Parkinson's disease pathology by promoting neuronal ferroptosis and neuroinflammation

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Neural Regeneration Research 2025年第7期20卷 2038-2052页

作者： Zhihao Lin Changzhou Ying Xiaoli Si Naijia Xue Yi Liu Ran Zheng Ying Chen Jiali pu Baorong Zhang Department of Neurology The Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina

Parkinson's disease is primarily caused by the loss of dopaminergic neurons in the substantia nigra ***,a novel form of regulated cell death characterized by iron accumulation and lipid peroxidation,plays a vital role in the death of dopaminergic ***,the molecular mechanisms underlying ferroptosis in dopaminergic neurons have not yet been completely *** oxidase 4 is related to oxidative stress,however,whether it regulates dopaminergic neuronal ferroptosis remains *** aim of this study was to determine whether NADPH oxidase 4 is involved in dopaminergic neuronal ferroptosis,and if so,by what *** found that the transcriptional regulator activating transcription factor 3 increased NADPH oxidase 4 expression in dopaminergic neurons and astrocytes in an 1-methyl-4-phenyl-1,2,3,6 tetrahydropyridine-induced Parkinson's disease *** oxidase 4 inhibition improved the behavioral impairments observed in the Parkinson's disease model animals and reduced the death of dopaminergic ***,NADPH oxidase 4 inhibition reduced lipid peroxidation and iron accumulation in the substantia nigra of the Parkinson's disease model ***,we found that NADPH oxidase 4 interacted with activated protein kinase Cαto prevent ferroptosis of dopaminergic ***,by lowering the astrocytic lipocalin-2 expression,NADPH oxidase 4 inhibition reduced 1-methyl-4-phenyl-1,2,3,6 tetrahydropyridine-induced *** findings demonstrate that NADPH oxidase 4 promotes ferroptosis of dopaminergic neurons and neuroinflammation,which contribute to dopaminergic neuron death,suggesting that NADPH oxidase 4 is a possible therapeutic target for Parkinson's disease.

关键词： dopaminergic neuron ferroptosis NADPH oxidase 4(NOX4) neuroinflammation Parkinson's disease

Evolution of innovative behaviors on scale-free networks

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Frontiers of physics 2018年第4期13卷 275-283页

作者： Ying-ting Lin Xiao-pu Han Bo-Kui Chen Jun Zhou Bing-hong Wang Department of Physics and Electronic Information Engineering Minjiang University Fuzhou 350108 China Alibaba Research Center for Complexity Sciences Hangzhou Normal University Hangzhou 311121 China Division of Logistics and Transportation Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China Department of Computer Science School of Computing National University of Singapore Singapore 117417 Singapore Department of Modern Physics and Nonlinear Science Center University of Science and Technology of China Hefei 230026 China

Innovation, which involves technological transformation and management reorganization, brings about significant changes in modern society. In this paper, to investigate how innovations can be promoted, we propose a game-based model to study the co-evolutionary dynamics of human innovative behaviors. A simulation on scale-free networks is conducted, in which the innovative behavior of each node is determined and updated based on the feedback regarding its innovation, namely the diffusion of the innovation status. Numerical simulations of the model generate a series of patterns, which is consistent with people＇s daily experiences and perceptions as regards real-world innovative behaviors. Specifically, various scaling spatiotemporal properties and rich structural impacts on dynamics can be observed. This model provides a novel approach to understand the evolution of innovative behaviors and provides insight for strategy studies of innovation promotion.

关键词： innovative behaviors innovation diffusion evolutionary game coevolution dynamics scale-free networks