检索结果-内蒙古大学图书馆

Zwitterionic peptides:Tunable next-generation stealth nanoparticle modifications

Bioactive Materials 2023年第9期27卷 113-124页

作者： Clyde Overby Soomin Park Austin Summers Danielle S.W.Benoit Department of Biomedical Engineering University of Rochester RochesterNYUSA Center for Musculoskeletal Research University of RochesterRochesterNYUSA Department of Biology University of Rochester RochesterNYUSA Department of Biology Duquesne UniversityPAUSA Department of Chemical Engineering University of RochesterRochesterNYUSA Materials Science Program University of RochesterRochesterNYUSA Knight Campus for Accelerating Scientific Impact Department of BioengineeringUniversity of OregonEugeneORUSA

Adsorption of proteins to nanoparticles(NPs),a complex process that results in a protein corona,is controlled by NP surface properties that define NP interactions in *** to control adsorbed protein quantity through surface modification have led to improvements in circulation time or ***,current approaches have yet to be identified to control adsorbed protein identities within the ***,we report the development and characterization of diverse zwitterionic peptides(ZIPs)for NP anti-fouling surface functionalization with specific and controllable affinity for protein adsorption profiles defined by ZIP *** serum exposure of ZIP-conjugated NPs and proteomics analysis of the resulting corona,we determined that protein adsorption profiles depend not on the exact composition of the ZIPs but on the sequence and order of charges along the sequence(charge motif).These findings pave the way for developing tunable ZIPs to orchestrate specific ZIP-NP protein adsorption profiles as a function of ZIP charge motif to better control cell and tissue specificity and pharmacokinetics and provide new tools for investigating relationships between protein corona and biological ***,overall ZIP diversity enabled by the diversity of amino acids may ameliorate adaptive immune responses.

关键词： Nanoparticles Protein corona Surface functionalization Peptide design Cellular uptake

来源：评论

学校读者我要写书评

暂无评论

Ultrahigh rate capability of 1D/2D polyaniline/titanium carbide(MXene)nanohybrid for advanced asymmetric supercapacitors

引用

Nano Research 2022年第1期15卷 285-295页

作者： Jinhua Zhou Qi Kang Shuchi Xu Xiaoge Li Cong Liu Lu Ni Ningna Chen Chunliang Lu Xizhang Wang Luming Peng Xuefeng Guo Weiping Ding Wenhua Hou Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Department of Polymer Science and Engineering Shanghai Key Laboratory of Electrical Insulation and Thermal AgingShanghai Jiao Tong UniversityShanghai 200240China Analytical Testing Center Yangzhou UniversityYangzhou 225009China

High energy density and enhanced rate capability are highly sought-after for supercapacitors in today's mobile *** this work,polyaniline/titanium carbide(MXene)(PANI/Ti3C2Tx)nanohybrid is synthesized through a facile and cost-effective self-assembly ***-dimensional(10)PANI nanofibers and two-dimensional(20)Ti3C2Tx ***!Ti3C2Tx delivers greatly improved specific capacitance,ultrahigh rate capability(67%capacitance retention from 1 to 100 A·g^(-1))as well as good cycle *** kinetic analysis reveals that PANI/Ti3C2Tx is featured with surface capacitance-dominated process and has a quasi-reversible kinetics at high scan rates,giving rise to an ultrahigh rate *** using PANl!Ti3C2Tx as positive electrode,an 1.8 V aqueous asymmetric supercapacitor(ASC)is successfully assembled,showing a maximum energy density of 50.8 Wh·kg^(-1)·(at 0.9 kW-kg-1)and a power density of 18 kW·kg^(-1)(at 26 Wh·kg^(-1)).Moreover,an 3.0 V organic ASC is also elaborately fabricated,·by using PANI/Ti3C2Tx,achieving an ultrahigh energy density of 67.2 Wh·kg^(-1)(at 1.5 kW·kg^(-1))and a power density of 30 kW·kg^(-1)·(at 26.8 Wh·kg^(-1)).The present work not only improves fundamental understanding of the structure-property relationship towards ultrahigh rate capability electrode materials,but also provides valuable guideline for the rational design of high-performance:energy storage devices with both high energy and power densities.

关键词： MXene polyaniline nanohybrid asymmetric supercapacitor rate capability

来源：评论

学校读者我要写书评

暂无评论

Fiber‑Shaped Soft Actuators:Fabrication,Actuation Mechanism and Application

引用

Advanced Fiber Materials 2023年第3期5卷 868-895页

作者： Yue Yu Juanjuan Wang Xue Han Shuguang Yang Gaihong An Conghua Lu School of Materials Science and Engineering Tianjin Key Laboratory of Building Green Functional MaterialsTianjin Chengjian UniversityTianjin 300384People’s Republic of China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low‑Dimension MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China School of Materials Science and Engineering Tianjin UniversityTianjin 300072People’s Republic of China Environmental and Operational Medicine Research Department Military Medical Sciences AcademyTianjin 300050People’s Republic of China

As mechanical devices for moving or controlling mechanisms or systems,actuators have attracted increasing attention in various *** to traditional actuators with rigid structures,soft actuators made up of stimulus-responsive soft materials are more adaptable to complex working conditions due to soft bodies and diverse control *** from plate-shaped soft actuators,which have the limited deformations between two dimensional(2D)and 3D-configurations such as bending and twisting,fiber-shaped soft actuators(FSAs)own intriguing deformation modes to satisfy diverse practical *** this mini review,the recent progress on the controlled fabrication of the FSAs is *** advantages and disadvantages of each fabrication method are also ***,the as-developed actuation mechanisms of the FSAs are ***,typical examples of the related applications of the FSAs in different fields have been ***,an outlook on the development tendency of the FSAs is put forward as well.

关键词： Soft actuator Actuation mechanism Fiber-shaped structure Smart materials

来源：评论

学校读者我要写书评

暂无评论

Green Fabrication of Underwater Superoleophobic Biopolymeric Nanofibrous Membranes for Effective Oil-Water Separation

引用

Advanced Fiber Materials 2023年第2期5卷 603-616页

作者： Subin Oh Junsik Bang Hyoung‑Joon Jin Hyo Won Kwak Program in Environmental and Polymer Engineering Inha University100 Inha‑RoMichuhol‑GuIncheon 22212South Korea Department of Agriculture Forestry and BioresourcesCollege of Agriculture and Life SciencesSeoul National University1 Gwanak‑RoGwanak‑GuSeoul 08826South Korea Department of Polymer Science and Engineering Inha University100 Inha‑RoMichuhol‑GuIncheon 22212South Korea Research Institute of Agriculture and Life Sciences Seoul National University1 Gwanak‑RoGwanak‑GuSeoul 08826South Korea

Currently,most of the materials for oil-water separation membranes are limited to fluorine-based polymers with low surface ***,it is not biodegradable and requires large amounts of organic and toxic solvents in the membrane manufacturing ***,interest in the development of a new eco-friendly oil-water separation membrane that does not cause secondary pollution and exhibits selective wettability characteristics in water or oil is *** biopolymeric nanofibrous membranes inspired by fish skin can provide specific underwater oleophobicity,which is effective for excellent oil-water separation efficiency and prevention of secondary *** gelatin,which is highly soluble in water and has a low gelation temperature,can be electrospun in an aqueous solution and has the same polar functional groups as the hydrophilic mucilage of fish *** addition,the micro/nanostructure of fish skin,which induces superoleophobicity in water,introduces a bead-on-string structure using the Rayleigh instability of *** solubility of fish gelatin in water was removed using an eco-friendly crosslinking method using reducing *** skin-mimicking materials successfully separated suspended oil and emulsified oil,with a maximum flux of 2086 Lm^(−2) h^(−1) and a separation efficiency of more than 99%.The proposed biopolymeric nanofibrous membranes use fish gelatin,which can be extracted from fish waste and has excellent biodegradability with excellent oil-water separation *** addition,polymer material processing,including membrane manufacturing and crosslinking,can be realized through eco-friendly ***,fish skin-inspired biopolymeric membrane is expected to be a promising candidate for a sustainable and effective oil-water separation membrane in the future.

关键词： Fish gelatin Nanofibrous membrane Superoleophobicity Superhydrophilicity Oil/water separation

来源：评论

学校读者我要写书评

暂无评论

Near infrared light-induced dynamic modulation of enzymatic activity through polyphenol-functionalized liquid metal nanodroplets

引用

Chinese chemical Letters 2023年第2期34卷 475-480页

作者： Chaojun Zhang Yang Tang Qin Wang Yunxiang He Xiaoling Wang Sebastian Beyer Junling Guo BMI Center for Biomass Materials and Nanointerfaces College of Biomass Science and EngineeringSichuan UniversityChengdu 610065China School of Pharmacy Southwest Minzu UniversityChengdu 610225China National Engineering Research Center of Clean Technology in Leather Industry Sichuan UniversityChengdu 610065China Department of Biomedical Engineering Chinese University of Hong KongHong Kong 999077China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China Bioproducts Institute Department of Chemical and Biological EngineeringUniversity of British ColumbiaVancouverBC V6T 1Z4Canada

Dynamic manipulation of enzymatic activity is a challenging task for applications in chemical and pharmaceutical industries due to the difficult modification and variable conformation of various ***, we report a new strategy for reversible dynamic modulation of enzymatic activity by near-infrared light-induced photothermal conversion based on polyphenol-functionalized liquid metal nanodroplets(LM). The metal-phenolic nanocoating not only provides colloidal stability of LM nanodroplets but also generates nanointerfaces for the assembly of various enzymes on the LM nanodroplets. Upon near infrared(NIR) irradiation, the localized microenvironmental heating through photothermal effect of the LM nanodroplets allows tailoring the enzymatic activity without affecting the bulk temperature. A library of functional enzymes, including proteinase K, glucoamylase, glucose oxidase, and Bst DNA polymerase, is integrated to perform a reversible control and enhanced activities even after five times of cycles, demonstrating great potential in bacterial fermentation, bacteriostasis, and target gene amplification.

关键词： Enzymatic activity Photo-modulation Near infrared light Liquid metal nanodroplets Metal-phenolic nanocoating

来源：评论

学校读者我要写书评

暂无评论

Synthesis of Cyclic Polyolefin: Ring-Opening Metathesis polymerization by Binuclear Vanadium Complexes

引用

Chinese Journal of Chemistry 2021年第5期39卷 1181-1187页

作者： Xiaohua Hou Xiaojian Chen Xiang Gao Lei Xu Hui Zou Li Zhou Zong-Quan Wu Department of Polymer Science and Engineering School of Chemistry and Chemical Engineeringand Anhui Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of Technology193 Tunxi RoadHefeiAnhui 230009China

Ring-opening metathesis polymerization(ROMP)of norbornene by binuclear vanadium alkylidene in-situ formed from dialkyl complexes was *** activities were observed by the binuclear system than mononuclear *** the cyclic polymers were obtained and *** is proposed that cyclic binuclear vanadium alkylidene was afforded due to the intramolecular chain-transfer *** size of polymer ring could be adjusted by the vanadium catalyst structure and polymerization *** results were also observed in the ROMP of cyclopentene.

关键词： Metathesis polymerization Homogeneous catalysis Carbenes Vanadium

来源：评论

学校读者我要写书评

暂无评论

Manipulating dielectric property of polymer coatings toward highretention-rate lithium metal full batteries under harsh critical conditions

引用

Nano Research 2023年第7期16卷 9240-9249页

作者： Qi Kang Zechao Zhuang Yong Li Yinze Zuo Jian Wang Yijie Liu Chaoqun Shi Jie Chen Hongfei Li Pingkai Jiang Xingyi Huang Department of Polymer Science and Engineering Shanghai Key Laboratory of Electrical Insulation and Thermal AgeingSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Department of Chemistry Tsinghua UniversityBeijing 100084China Institute of Applied and Physical Chemistry and Center for Environmental Research and Sustainable Technology University of BremenBremen 28359Germany Institute for Sustainable Energy/College of Sciences Shanghai UniversityShanghai 200444China Helmholtz Institute Ulm(HIU) Ulm D89081Germany School of Electrical Engineering Xi’an Jiaotong UniversityXi’an 710049China

Lithium(Li)metal batteries(LMBs)can potentially deliver much higher energy density but remain plagued by uncontrollable Li plating with dendrite growth,unstable interfaces,and highly abundant excess Li(>50 mAh·cm^(-2)).Herein,different from the artificial layer or three-dimensional(3D)matrix host constructions,various dielectric polymers are initially well-comprehensively investigated from experimental characterizations to theoretical simulation to evaluate their functions in modulating Li ion *** a proof of concept,a 3D interwoven high dielectric functional polymer(HDFP)nanofiber network with polar C-F dipole moments electrospun on copper(Cu)foil is designed,realizing uniform and controllable Li deposition capacity up to 5.0 mAh·cm^(-2),thereby enabling stable Li plating/stripping cycling over 1400 h at 1.0 mA·cm^(-2).More importantly,under the highcathode loading(~3.1 mAh·cm^(-2))and only 0.6×excess Li(N/P ratio of 1.6),the full cells retain capacity retention of 97.4%after 200 cycles at 3.36 mA·cm^(-2)and achieve high energy density(297.7 Wh·kg^(-1)at cell-level)under lean electrolyte conditions(15μL),much better than ever-reported *** work provides a new direction for designing high dielectric polymer coating toward high-retention-rate practical Li full batteries.

关键词： high dielectric functional polymer nanofiber Li metal full cell low N/P ratio high-retention capacity

来源：评论

学校读者我要写书评

暂无评论

Porous PVA skin-covered thin Zirfon-type separator as a new approach boosting high-rate alkaline water electrolysis beyond 1000 hours’lifespan

引用

escience 2024年第6期4卷 127-137页

作者： Xi Luo Nengneng Xu Yongnan Zhou Xiaohui Yang Woochul Yang Guicheng Liu Joong Kee Lee Jinli Qiao State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Environmental Science and EngineeringDonghua UniversityShanghai 201620China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Department of Physics Dongguk UniversitySeoul 04620Republic of Korea School of Energy Power and Mechanical Engineering North China Electric Power UniversityBeijing 100096China Dept.of Chemical&Biochemical Eng Gachon University1342 Seongnam-daeroSeongnam-si 13120Republic of Korea

Regulating the pore structure of a zirfon-based diaphragm is critical to promoting a high-rate alkaline electrolyzer,but it is still a big challenge to respond“trade-off”between the thickness of the diaphragm and the current density/gas barrier *** this work,a porous hydrophilic skin layer with~μm thick of polyvinyl alcohol(PVA)has been successfully constructed and casted onto the thin zirfon-type separator composite(V-Zirfon-350μm).The V-Zirfon-350μm separator generates a high KOH uptake(>90%),low area resistance(0.2026Ωcm^(2))but a low electrolyte permeation flux density(5.2×10^(-4) mL cm^(-2) s^(-1) at 0.5 bar),which largely surpasses the state-of-the-art commercial Zirfon UTP-500μm *** coupled with Raney Ni cathode and NiCoMo-LDH anode catalysts,the V-Zirfon-350μm separator offers a high current density over 1300 mA cm^(-2)@2.0 V(80℃ in 30%KOH)and a superior stability of 300 h under 800 mA cm^(-2) for alkaline water electrolysis(AWE).Specifically,the voltage is merely~3.5 V for two electrolytic cells connected in series,which can be even conducted for more than 1300 h at different operational *** work provides a novel methodology for the practical application of a thin Zirfon-based diaphragm.

关键词： Alkaline water electrolysis Porous separator Zirfon type Polyvinyl alcohol Skin layer

来源：评论

学校读者我要写书评

暂无评论

Extremely large Seebeck coefficient of gelatin methacryloyl (GelMA)-based thermogalvanic cells by the dual effect of ion-induced crystallization and nanochannel control

引用

Materials Today Energy 2024年 42卷

作者： Hong, Shao-Huan Hsu, Ching-Chieh Liu, Tai-Hung Lee, Tai-Chou Tung, Shih-Huang Chen, Hsin-Lung Yu, Jiashing Liu, Cheng-Liang Department of Chemical and Materials Engineering National Central University Taoyuan32001 Taiwan Department of Materials Science and Engineering National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering National Taiwan University Taipei10617 Taiwan Institute of Polymer Science and Engineering National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering National Tsing Hua University Hsinchu30013 Taiwan

The quasi-solid state thermogalvanic cells (TGCs) have been extensively investigated due to their high Seebeck coefficient (S) and suitability for wearable power generation. However, the influence of hydrogel nanostructure on Seebeck coefficient remains underexplored. In this study, biocompatible TGCs based on gelatin methacryloyl (GelMA) are fabricated via a fast-photocrosslinking process. Moreover, guanidium chloride (GdmCl) salts are directly introduced into the TGCs to enhance the Seebeck coefficient via ion-induced crystallization in the p-type FeCN63−/FeCN64− redox system. Small angle X-ray scattering reveals controlled GelMA hydrogel mesh size adjusting the amount of GdmCl, leading to improved intermolecular interactions between the guanidium cations and GelMA polymer. The optimized p-type Seebeck coefficient reaches an unprecedented 21.6 mV K−1, which is the highest thus far reported in the context of the TGC system. Furthermore, a prototype wearable thermoelectric generator (TEG) with an output voltage of 1.6 V under a temperature difference (ΔT) of 9 °C is able to power an LED directly without requiring an additional voltage booster. In brief, the dual effect of ion-induced crystallization and nanochannel control substantially enhances the Seebeck coefficient of the TGC, thereby offering a promising strategy for enhancing the performance of low-grade thermal energy harvesting wearable TEGs. © 2024 Elsevier Ltd

关键词： Energy harvesting

来源：评论

学校读者我要写书评

暂无评论

A supramolecular formulation of icariin@sulfonatoazocalixarene for hypoxia-targeted osteoarthritis therapy

引用

Chinese chemical Letters 2025年第1期36卷 267-271页

作者： Chao Zhang Ai-Feng Liu Shihui Li Fang-Yuan Chen Jun-Tao Zhang Fang-Xing Zeng Hui-Chuan Feng Ping Wang Wen-Chao Geng Chuan-Rui Ma Dong-Sheng Guo Orthopedics department First Teaching Hospital of Tianjin University of Traditional Chinese MedicineTianjin 300380China Orthopedics department National Clinical Research Center for Chinese Medicine Acupuncture and MoxibustionTianjin 300380China College of Chemistry State Key Laboratory of Elemento-Organic ChemistryKey Laboratory of Functional Polymer Materials(Ministry of Education)Frontiers Science Center for New Organic MatterCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)Nankai UniversityTianjin 300071China

Osteoarthritis(OA)is the most prevalent joint disease and icariin is a promising drug for its ***,the clinical use of icariin is hindered by poor water solubility,low bioavailability,and nonspecific release and biological ***,sulfonated azocalix[4]arene(SAC4A)with enhanced water solubility,recognition capacity,and designed responsiveness was used to improve the efficiency of icariin for OA ***4A,a macrocycle with well-defined molecular weight and structure,could encapsulate and enhance water solubility of various *** addition,SAC4A enables hypoxia-responsive release of loaded *** with icariin treatment,supramolecular complex icariin@SAC4A significantly relieved OA symptoms of rats,including more regular bone morphology and structure,and lower degree of cartilage ***,the supramolecular formulation demonstrated various advantages,including easy preparation,hypoxia-triggered release,and small size that conducive to drug penetration.

关键词： Biomaterial Supramolecular chemistry Calixarene Icariin Osteoarthritis

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：