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Facile Synthesis of Cellulose Acetate Ultrafiltration Membrane with stimuli-responsiveness to pH and Temperature Using the Additive of F127-b-PDMAEMA

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Chinese Journal of Chemistry 2017年第7期35卷 1109-1116页

作者： Naixu Li Jun Yin LingfeiWei Quanhao Shen Wei Tian Jing Li Yong Chen Jing Jin Hongcheng Teng Jiancheng Zhou School of Chemistry and Chemical Engineering Southeast University Nanjing Jiangsu 211189 China Department of Biological and Chemical Engineering Jingdezhen College Jingdezhen Jiangxi 333000 China Department of Chemical and Pharmaceutical Engineering Southeast University Chengxian College Nanjing Jiangsu 210088 China Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research Southeast University Nanjing Jiangsu 211189 China

We fabricate a novel cellulose acetate （CA） ultrafiltration membrane modified by block copolymer F127-b- PDMAEMA, which is synthesized using F127 and DMAEMA via the ARGET ATRP method. Compared to conven- tional ultrafiltration membranes, the incorporation of both F 127 and PDMAEMA can not only readily increase the hydrophilicity of the membrane, but also exhibit stimuli-responsiveness to temperature and pH. Fourier transform infrared spectroscopy （FT-IR）, nuclear magnetic resonance spectroscopy （NMR）, and gel permeation chromatog- raphy （GPC） are employed to analyze the structure of the F 127-b-PDMAEMA. The membrane properties are eval- uated via scanning electron microscope （SEM） imaging, porosity test, automatic target recognition Fourier trans- form infrared spectroscopy （ATR-FTIR）, water contact angle test and permeation test. The results indicate that the F 127-b-PDMAEMA is an excellent pore agent, which contributes to an enhancement of the membrane in sensitivity to temperature and pH. The modified membrane also exhibits lower water contact angle （64.5~）, which is attributed to the good anti-fouling performance and high water permeation.

关键词： F 127-b-PDMAEMA stimuli-responsiveness cellulose acetate membrane

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Lanthanide-DNA supramolecular hydrogels with tunable and responsive luminescence

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Science China(Technological Sciences) 2022年第5期65卷 1043-1051页

作者： YANG Sen PAN XiaoRui TANG JianPu YAO Chi YANG DaYong Frontiers Science Center for Synthetic Biology Key Laboratory of Systems Bioengineering(MOE)Institute of Biomolecular and Biomedical EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin300350China

Supramolecular DNA hydrogels have been synthesized based on the assembly of DNA building-blocks such as branched DNA and long DNA *** structures and functions of sole-module DNA hydrogels remain *** methodologies by integrating hybrid components are desired to expand the synthesis of DNA ***,we synthesized a Ln^(3+)-containing luminescent supramolecular hydrogel by employing the coordination and electrostatic interactions between lanthanide ions(Tb^(3+)and Eu^(3+))and linear single-stranded DNA(ssDNA).Through the coordination between ssDNA and Ln^(3+),a series of luminescent supramolecular hydrogels were synthesized,among which the Tb-G_(n)/T_(n)and Eu-T_(n)hydrogels emitted the characteristic luminescence of Tb and Eu,*** luminescent intensities of the hydrogels were adjusted by designing DNA sequences with programmable bases and chain ***,the Tb/Eu co-doped luminescent supramolecular hydrogel displayed tunable luminescence from green to yellow by regulating the stoichiometric ratio of Tb/***,the hydrogel had reversible luminescent stimulation responsiveness toward Ag^(+)/*** expected that the synthesis of Ln^(3+)-containing luminescent supramolecular hydrogels enriched the strategies of the construction of DNA hydrogels,and promoted the development of stimuli-responsive supramolecular materials.

关键词： DNA hydrogel supramolecular self-assembly luminescent hydrogel lanthanide complex stimuli-responsiveness

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Temperature/pH dual-responsive reversible morphology evolution of block copolymer microparticles under three-dimensional confinement

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Science China Chemistry 2023年第12期66卷 3587-3593页

作者： Mengmeng Zhang Zaiyan Hou Simeng Liu Guoqiang Han Meirong Tian Jintao Zhu Jiangping Xu Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education School of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Development of block copolymer(BCP)microparticles with switchable morphology in response to external stimuli is important for exploiting new intelligent *** this work,thermo/p H dual-responsive nanoparticles(NPs)were employed as a cosurfactant to modulate the self-assembly morphology of polystyrene-b-poly(2-vinylpyridine)(PS-b-P2VP)microparticles within confined emulsion *** co-surfactant was synthesized by grafting poly(acrylic acid)-b-poly(N-isopropylacrylamide)onto the surface of *** introduction of the dual-responsive co-surfactant enabled thermo/p H dual-responsive reversible morphology transition of the PS-b-P2VP microparticles by tailoring the hydrophobicity and interfacial affinity of the *** using this strategy,the thermo-inert PS-b-P2VP self-assembled into pupa-like microparticles at T=10℃ and p H7.5,which could transform into tulip-like microparticles when T was increased to 50℃.When the p H value was increased to 11,the pupa-like particles turned into onion-like microparticles although the PS-b-P2VP was inert to ***,the pupa-like microparticles remained unchanged when both T and p H were simultaneously *** PAA-b-PNIPAM-grafted Fe3O4NP surfactants showed obvious advantages over the linear PAA-b-PNIPAM surfactants in modulating the morphology transition,since the linear PAA-b-PNIPAM could not induce the reversible shape transition of *** work provides an efficient strategy to achieve reversible shape transformation of BCP microparticles while the internal phase structure is preserved,which may be utilized to switch the structural color properties of BCP microparticles.

关键词： block copolymer self-assembly stimuli-responsiveness lower critical solution temperature microparticle

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External stimulation-controlled dynamic DNA devices for biosensing and biomedical applications

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Science China Chemistry 2023年第11期66卷 3105-3115页

作者： Wei Xu Feifei Hu Jiajing Li Jinhua Shang Xiaoqing Liu Yan Zeng Qiong Wu Fuan Wang Department of Gastroenterology Zhongnan Hospital of Wuhan UniversityCollege of Chemistry and Molecular SciencesWuhan UniversityWuhan 430072China School of Medicine Wuhan University of Science and TechnologyWuhan 430081China College of Chemistry and Chemical Engineering Hunan UniversityChangsha 410082China

DNA devices that can recognize molecular inputs and transform them into functional outputs in an autonomous manner have been actively pursued as versatile toolkits for controlled nanofabrication,molecular network regulation,biosensing and cellular function *** introduction of external stimuli-responsive units not only ensures the programmability and functionality of DNA devices themselves,but also confers rapid,remote and reversible dynamic regulation *** facilitates on-demand activation and expands the application scope of dynamic DNA ***,an overview of recent advances in the construction of stimuli-responsive DNA devices that respond to different exogenous triggers,including physical stimuli(e.g.,light,thermal,magnetic field,and electric field),chemical stimuli(e.g.,supermolecules,pH,redox,and metal ions),and biological cues(e.g.,protein,biomolecule,and nucleic acid),and their controllable nanofabrication and biomedical application have been *** current challenges and potential solutions of these externally responsive DNA devices for their future advancements in this emerging field are also discussed.

关键词： DNA device stimuli-responsiveness on-demand regulation DNAzyme biosensing

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Poly[2]catenane Gels Based on Sequential Assembly of Small Molecules

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Chinese Journal of Chemistry 2024年第22期42卷 2699-2704页

作者： Hanwei Zhang Jinsa Li Ziqing Hu Xiaofan Ji Xi'an Rare Metal Materials Institute Co.Ltd. Xi'anShaanxi 710016China Key Laboratory of Materials Chemistry for Energy Conversion and Storage Ministry of EducationHubei Key Laboratory of Materials Chemistry and Service FailureHubei Engineering Research Centerfor Biomaterials and Medical Protective MaterialsState Key Laboratory of Materials Processing and Die&Mould TechnologySchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhanHubei 430074China

Polycatenane gels have attracted extensive attention due to their high degree of freedom and ***,the syntheses of poly[2]catenane gels reported to date all rely on the polymer as the ***,we prepared poly[2]catenane gels based on entirely sequential assembly of small *** M1 with two unclosed rings was first prepared,which self-assembled to form supramolecular polymers(SPs)via hydrogen bonding andπ-π*** adding small molecule monomers M2 and M3 with aldehyde groups,ring closing of SPs occurred because the amino groups in the SPs reacted with M2 to form imine *** addition,M3,which had twice the number of aldehyde groups as M2,enabled SPs to ring-close,causing the proceeding of crosslinking process at the same *** linear SPs were transformed into poly[2]catenane gel *** to the presence of hydrogen bonds in the poly[2]catenane gel,the gel also possessed stimulus responsiveness and self-healing properties.

关键词： Polycatenane Gel Dynamic covalent bond Non-covalent bond Self-assembly stimuli-responsiveness Supramolecular chemistry Networks Hydrogen bonding

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stimuli-responsive microcarriers and their application in tissue repair: A review of magnetic and electroactive microcarrier

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Bioactive Materials 2024年第9期39卷 147-162页

作者： LiYang Zhang Mengjiao Ma Junfei Li Kun Qiao Yajie Xie Yudong Zheng School of Material Science and Engineering University of Science and Technology BeijingBeijingChina Beijing Wanjie Medical Device Co. LtdBeijingChina Beijing Gerecov Technology Company Ltd. BeijingChina

Microcarrier applications have made great advances in tissue engineering in recent years, which can load cells,drugs, and bioactive factors. These microcarriers can be minimally injected into the defect to help reconstruct agood microenvironment for tissue repair. In order to achieve more ideal performance and face more complextissue damage, an increasing amount of effort has been focused on microcarriers that can actively respond toexternal stimuli. These microcarriers have the functions of directional movement, targeted enrichment, materialrelease control, and providing signals conducive to tissue repair. Given the high controllability and designabilityof magnetic and electroactive microcarriers, the research progress of these microcarriers is highlighted in thisreview. Their structure, function and applications, potential tissue repair mechanisms, and challenges are *** summary, through the design with clinical translation ability, meaningful and comprehensiveexperimental characterization, and in-depth study and application of tissue repair mechanisms, stimuliresponsivemicrocarriers have great potential in tissue repair.

关键词： stimuli-responsiveness Magnetic microcarrier Electroactive microcarrier Tissue repair

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stimuli-responsive nanocarriers for therapeutic applications in cancer

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Cancer Biology & Medicine 2021年第2期18卷 319-335页

作者： Xubo Zhao Jie Bai Wenjing Yang Green Catalysis Center and College of ChemistryZhengzhou UniversityZhengzhou 450001China Department of Anesthesiology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052China

Cancer has become a very serious challenge with aging of the human *** in nanotechnology have provided new perspectives in the treatment of *** the combination of nanotechnology and therapeutics,nanomedicine has been successfully used to treat cancer in recent *** terms of nanomedicine,nanocarriers play a key role in delivering therapeutic agents,reducing severe side effects,simplifying the administration scheme,and improving therapeutic *** of the structure and function of nanocarriers for improved therapeutic efficacy in cancer have attracted increasing attention in recent ***-responsive nanocarriers penetrate deeply into tissues and respond to external or internal stimuli by releasing the therapeutic agent for cancer ***,stimuli-responsive nanocarriers reduce the severe side effects of therapeutic agents,when compared with systemic chemotherapy,and achieve controlled drug release at tumor ***,the development of stimuli-responsive nanocarriers plays a crucial role in drug delivery for cancer *** article focuses on the development of nanomaterials with stimuli-responsive properties for use as nanocarriers,in the last few *** nanocarriers are more effective at delivering the therapeutic agent under the control of external or internal ***,nanocarriers with theranostic features have been designed and fabricated to confirm their great potential in achieving effective treatment of cancer,which will provide us with better choices for cancer therapy.

关键词： Nanocarriers therapeutic agent nanomedicine stimuli-responsiveness cancer therapy

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Supramolecular polymers fabricated by orthogonal self-assembly based on multiple hydrogen bonding and macrocyclic host–guest interactions

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Chinese Chemical Letters 2020年第1期31卷 1-9页

作者： Tangxin Xiao Ling Zhou Xiao-Qiang Sun Feihe Huang Chen Lin Leyong Wang School of Petrochemical Engineering Advanced Catalysis and Green Manufacturing Collaborative Innovation CenterChangzhou UniversityChangzhou 213164China State Key Laboratory of Chemical Engineering Center for Chemistry of High Performance&Novel MaterialsDepartment of ChemistryZhejiang UniversityHangzhou 310027China Key Laboratory of Mesoscopic Chemistry of MOE Jiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

Supramolecular polymers constructed by orthogonal self-assembly based on multiple hydrogen bonding and macrocyclic host-guest interactions have received increasing attention due to their elegant structures,outstanding properties,and potential *** bonding endows these supramolecular polymers with good adaptability and reversibility,while macrocyclic host-guest interactions give them good selectivity and versatile ***,functional supramolecular polymers fabricated by these two highly specific,noninterfering interactions in an orthogonal way have shown wide applications in the fields of molecular machines,electronics,soft materials,*** this review,we discuss the recent advances of functional supramolecular polymers fabricated by orthogonal self-assembly based on multiple hydroge n bonding and host-guest *** particular,we focus on crown ether-and pillar[n]arene-based supramolecular polymers due to their compatibility with multiple hydrogen bonds in organic *** fabrication strategies,interesting properties,and potential applications of these advanced supramolecular materials are mainly concerned.

关键词： Supramolecular polymer Orthogonal self-assembly Hydrogen bonding Host-guest interactions stimuli-responsiveness

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Structure-function integrated biodegradable Mg/polymer composites:Design,manufacturing,properties,and biomedical applications

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Bioactive Materials 2024年第9期39卷 74-105页

作者： Xianli Wang Cheng Wang Chenglin Chu Feng Xue Jun Li Jing Bai School of Materials Science and Engineering Southeast UniversityJiangningNanjing211189JiangsuChina Jiangsu Key Laboratory for Advanced Metallic Materials JiangningNanjing211189JiangsuChina Department of Biomedical Engineering College of Design and EngineeringNational University of SingaporeSingapore119276Singapore

Mg is a typical biodegradable metal widely used for biomedical applications due to its considerable mechanical properties and *** polymers have attracted great interest owing to their favorable processability and ***,it is challenging for the degradation rates of Mg or polymers to precisely match tissue repair processes,and the significant changes in local pH during degradation hinder tissue *** concept of combining Mg with polymers is proposed to overcome the shortcomings of materials,aiming to meet repair needs from various aspects such as mechanics and ***,it is essential to systematically understand the behavior of biodegradable Mg/polymer composite(BMPC)from the design,manufacturing,mechanical properties,degradation,and biological *** this review,we elaborate on the design concepts and manufacturing strategies of high-strength BMPC,the“structure-function”relationship between the microstructures and mechanical properties of composites,the variation in the degradation rate due to endogenous and exogenous factors,and the establishment of advanced degradation research ***,the interplay among composite components during degradation and the biological function of composites under nonresponsive/stimuli-responsive platforms are also ***,we hope that this review will benefit future clinical applications of“structure-function”integrated biomaterials.

关键词： Mechanical property Interface Biodegradation stimuli-responsiveness Tissue engineering

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Metal-organic framework-based intelligent drug delivery systems for cancer theranostic: A review

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Frontiers of Materials Science 2021年第3期15卷 374-390页

作者： Qingni XU Chaohua LI Yuqi CHEN Yueli ZHANG Bo LU School of Chemistry Chemical Engineering and Life SciencesWuhan University of TechnologyWuhan 430070China

The design and development of multifunctional nano-drug delivery systems(NDDSs)is a solution that is expected to solve some intractable problems in traditional cancer *** particular,metal-organic frameworks(MOFs)are novel hybrid porous nanomaterials which are constructed by the coordination of metal cations or clusters and organic bridging *** from their intrinsic superior properties,MOFs have captivated intensive attentions in drug release and cancer *** on what has been achieved about MOF-based DDSs in recent years,this review introduces different stimuli-responsive mechanisms of them and their applications in cancer diagnosis and treatment ***,the existing challenges and future opportunities in this field are *** realizing industrial production and paying attention to biosafety,their clinical applications will be enriched.

关键词： metal-organic framework nanomaterial stimuli-responsiveness cancer theranostic

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