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key progresses of moe key laboratory of macromolecular synthesis and functionalization in 2021

Chinese Chemical Letters 2023年第5期34卷 174-186页

作者： Quan Wen Qiuquan Cai Ping Fu Dan Chang Xiaoyi Xu Tian-Jiao Wen Guang-Peng Wu Weipu Zhu Ling-Shu Wan Chengjian Zhang Xing-Hong Zhang Qiao Jin Zi-Liang Wu Chao Gao Haoke Zhang Ning Huang Chang-Zhi Li Hanying Li MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

In 2021,The moe key laboratory of Macromolecular synthesis and functionalization in Zhejiang University had achieved several important ***,a series of versatile organoboron catalysts were synthesized for ring-opening(co)***,a catalyst-free polycondensation mechanism was proposed for the production of polyesters with high molecular ***,a co-assembly method that can fabricate films and coatings with controllable structures and properties on various substrates was demonstrated,providing a platform for the construction of novel surface ***,facile methods for producing high-productivity poly(propylene carbonate)and semicrystalline polyester have been *** linear non-conjugated polyesters exhibiting yellow-green clusteroluminescence were developed for the first ***,a supramolecular prodrug nano-assembly strategy has been developed for reactive nitrogen species potentiated ***,a series of tough and stiff supramolecular hydrogels with shape memory properties have been used for information ***,reversible fusion and fission of wet-spun graphene oxide fibers has been successfully ***,three non-conjugated polypeptides were synthesized and the mechanism of clusteroluminescence was ***,a series of conducting covalent organic frameworks with high electrical conductivity and carrier mobility have been used as high-performance chemiresistor,electrocatalyst,and organic field-effect ***,the exploration of non-fused electron acceptors,and their photostable mechanism are exemplified for developing high-performance,low-cost and eco-friendly polymer solar ***,gel-grown long-range ordering bulk-heterojunctions has achieved improved X-ray detector performance.

关键词： Polymer Catalyst Surface coating Drug delivery Gel Graphene Organic optoelectronics

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key progresses of moe key laboratory of macromolecular synthesis and functionalization in 2023

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Chinese Chemical Letters 2024年第11期35卷 123-139页

作者： Guanxiong Yu Chengkai Xu Huaqiang Ju Jie Ren Guangpeng Wu Chengjian Zhang Xinghong Zhang Zhen Xu Weipu Zhu Hao-Cheng Yang Haoke Zhang Jianzhao Liu Zhengwei Mao Yang Zhu Qiao Jin Kefeng Ren Ziliang Wu Hanying Li MOE Key Laboratory of Macromolecular Synthesis and Functionalization International Research Center for X PolymersDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

In 2023,The moe key laboratory of Macromolecular synthesis and functionalization in Zhejiang University had achieved several important results in the five research ***,for controllable catalytic polymerization,a new silicon-centered organoboron binary catalyst was developed for copolymerization of epoxides,and a series of cooperative organocatalysts were proposed for ring-opening copolymerization of chalcogen-rich ***,with respect to microstructure and rheology,axially encoded metafiber demonstrated its capacity for integrating multiple electronics,while artificial nacre materials showed improved strength and toughness due to interlayer ***,concerning separating functional polymers,interfacial polymerization was monitored via aggregation-induced emission,and vacuum filtration was applied to assist interfacial ***,in terms of biomedical functional polymers,we designed antibacterial materials such as a novel quaternary ammonium salt that enables polyethylene terephthalate recycling and its antibacterial function,nanozyme-armed phage proved its efficiency in combating bacterial infection,and also transition metal nanoparticles showed capacities in antibacterial *** also made achievements in biomedical materials,including polymeric microneedles for minimally invasive implantation and functionalization of cardiac patches,as well as ROSresponsive/scavenging prodrug/miRNA balloon coating to promote drug delivery ***,methods and mechanisms of RNA labeling has been ***,about photo-electro-magnetic functional polymers,through-space conjugation was successfully manipulated by altering subunit packing modes,room-temperature phosphorescent hydrogels were synthesized via polymerization-induced crystallization of dopant molecules,and single crystals of both fullerene and non-fullerene acceptors were grown in crystallized organogel,with their photodetection performance further ***

关键词： Polymer Catalyst Fiber Biomaterials RNA Light-emitting materials Organic optoelectronics

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key progresses of moe key laboratory of macromolecular synthesis and functionalization in 2022

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Chinese Chemical Letters 2024年第3期35卷 114-126页

作者： Xumeng Deng Kaihao Chen Kai Pang Xiaoting Liu Minsong Gao Jie Ren Guanwen Yang Guangpeng Wu Chengjian Zhang Xufeng Ni Peng Zhang Jian Ji Jianzhao Liu Zhengwei Mao Ziliang Wu Zhen Xu Haoke Zhang Hanying Li MOE Key Laboratory of Macromolecular Synthesis and Functionalization International Research Center for X PolymersDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

In 2022,The moe key laboratory of Macromolecular synthesis and functionalization in Zhejiang University had achieved several important ***,a series of well-defined dinuclear organoboron catalysts were developed to precisely control the enchainment of ether and carbonate segments during the copolymerization of CO_(2)and ***,polyester had been synthesized through cationic copolymerization of cyclic ***,ring-opening polymerization of carbon dioxide based valerolactone had been achieved,revealing the prospect of 3-ethylidene-6-vinyltetrahydro-2H-pyran-2-one(EVL)in utilizing CO_(2)and synthesizing functional ***,machine learning methods have been applied to biomaterial research,enabling high-throughput screening of functional biomaterial surfaces for implantable devices,and searching for potent antimicrobial peptides in whole combinatorial peptide ***,methods of characterization of biomacromolecule RNA transcription and manipulation of nucleoside modification were ***,artificial enzymes-armed Bifidobacterium Longum probiotics were established to tune down gut ***,three-dimensional(3D)printing technologies were used to engineer tough supramolecular ***,hydroplastic foaming graphene frameworks for acoustic and conductive polymer composites were provided for ***,aggregate photophysics about the nature of through-space interactions(TSIs)and manipulating their strength in small molecules with non-conjugated structure had been ***,the forming mechanism of a newfound nested texture in poly(L-lactic acid)(PLLA)spherulitic films had been ***,the isotropically dyeing mechanism of KDP single crystals grown from hydrogels have been *** related works are reviewed in this paper.

关键词： Polymer Catalyst Biomaterial research mRNA Hydrogel Graphene Crystal

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key progresses of moe key laboratory of macromolecular synthesis and functionalization in 2020

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Chinese Chemical Letters 2022年第4期33卷 1650-1658页

作者： Jie Ren Xiao Shu Ya Wang Di Wang Guangpeng Wu Xinghong Zhang Qiao Jin Jianzhao Liu Ziliang Wu Zhen Xu Chang-Zhi Li Hanying Li MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

In 2020, the moe key laboratory of Macromolecular synthesis and functionalization in Zhejiang University had made progresses in several aspects. First, a series of metal-free organoboron catalysts had been designed and synthesized facilely, exhibiting outstanding reactivity, thermalstability and productivity in different kinds of polymerization and cycloaddition reactions. Second, a variety of chalcogen(O, S, Se)-rich polymers had been synthesized via organocatalysis and fabricated to be the ionic conductive and photoluminescent materials. Third, diverse microenvironment-sensitive nanoparticles had been designed,and novel strategies had been realized, to enhance the therapeutic efficacy in cancer as well as biofilmassociated infections. Fourth, m6 A modification on cellular transcriptome-wide messenger RNA had been successfully mapped at single base resolution using a metabolic labeling method. Fifth, a hydrogel-based robot had been developed, showing swift locomotion as a response to dynamic light stimulations. Sixth,the conformation-size scaling law and the conformation evolution map of 2 D macromolecules in solution had been elucidated experimentally, in the single-layer graphene oxide model. Seventh, semitransparent polymer solar cells, promising as building-integrated photovoltaics, have been developed with the fine balance among power conversion efficiency, visible light transparency and infrared photon radiation rejection. Finally, long-range ordered bulk-heterojunctions of organic semiconductors had been achieved,and their superior optoelectronic properties and potential application in photoelectric conversion had been revealed. The related work progresses are reviewed in this paper.

关键词： Polymer Catalyst Drug nanocarrier RNA methylation Gel 2D Macromolecule Organic optoelectronics

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Shear-thinning Catechol-modified Chitosan Hydrogel Loaded with Silver Nanoparticles for Endoscopic Submucosal Dissection

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Chinese Journal of Polymer Science 2024年第8期42卷 1147-1155页

作者： Wen-Jun Feng Yan-He Wu Xiao-Yang Liu Zheng-Ke Wang MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310058China

Shear-thinning hydrogels have emerged for endoscopic submucosal dissection,while wound intervention after surgery has rarely been ***,a catechol-modified chitosa n hydrogel with shear-thinning property was developed for simultaneously facilitating endoscopic submucosal dissection and postoperative wound *** from the shear-thinning and self-healing characteristics,the asprepared hydrogel showed easily endoscopic *** also performed very well as submucosal cushion,which could remain above 70%after injection for 120 min in ex vivo porcine large intestine *** fact,the cushion height of normal saline dramatically decreased to 46%of the initial height at 30 *** nanoparticles encapsulated into the network endowed the hydrogel with almost reached 100%antibacterial effect against *** and *** hemolysis ratio of the hydrogel was calculated to be as low as 0.8%.Combined with good hemocompatibility and cytocompatibility,the as-prepared hydrogel displayed much higher in vivo wound closu re and healing efficacy than normal *** results demonstrated the superiority of the shear-thinning chitosan hydrogel in facilitating clinical endoscopic submucosal dissection surgery.

关键词： Shear-thinning hydrogel Endoscopic mucosal dissection Wound healing Catechol-modified chitosan Silver nanoparticles

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UV-triggered Polymerization of Polyelectrolyte Composite Coating with Pore Formation and Lubricant Infusion

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Chinese Journal of Polymer Science 2023年第3期41卷 365-372,I0004,I0006页

作者： Jia-Qi Hu Wei-Pin Huang Jing Wang Ke-Feng Ren Jian Ji MOE Key Laboratory of Macromolecular Synthesis and Functionalization International Research Center for X PolymersDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

Porous coatings with the features of muti-interfaces and high specific surface area have emerged as an excellent material platform for the manipulation of porous ***-by-layer(Lb L)assembly technique has been widely used in preparing porous polyelectrolyte ***,the efficient construction of stable film from the Lb L technique is still a ***,we reported a new solution to construct a stabilized polyelectrolyte coating with porous *** by the mechanical reinforcement of double-network hydrogel,we constructed the poly(ethylenimine)(PEI)/poly(acrylic acid)(PAA)coating by in situ photopolymerization of acrylic acid in the PEI network instead of assembling PEI and *** with the Lb L films,the in situ polymerized coating kept higher stability after 30 iterations of *** structures could also be constructed after acid treatment,which was utilized to load lubricant to enhance the lubricating property of the *** work provides a new method for the construction of dynamic and stable polyelectrolyte coatings,expediting more development of practical applications.

关键词： Porous coating Polyelectrolyte coating Dip-coating UV-triggered polymerization Stability

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Payne Effect and Weak Overshoot in Rubber Nanocomposites

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Chinese Journal of Polymer Science 2022年第1期40卷 85-92页

作者： Zhi-Yun Li Yi-Hu Song Qiang Zheng MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

Payne effect and its associated weak overshoot are of importance for understanding and regulating the softening of rubber nanocomposites under large amplitude ***,Payne effect in diverse filled vulcanizates is investigated for generalizing the common *** curves of strain amplitude dependent storage modulus are created with respect to microscopic strain amplitude of the matrix,revealing a matrix-dominated elastic nonlinearity being independent of type and dispersity of filler,crosslinking density and sol fraction of matrix and filler-rubber interfacial ***,carbonaceous fillers with higher affinity to the rubber matrices yield lower strain amplification and higher overshoot behavior in comparison with siliceous *** investigation would be illuminating for preparing rubber nanocomposites with optimized reinforcement and softening performances.

关键词： Vulcanizate nanocomposites Payne effect Weak overshoot

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A polymyxin B loaded hypoxia-responsive liposome with improved biosafety for efficient eradication of bacterial biofilms

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Nano Research 2024年第9期17卷 8325-8336页

作者： Fang Liu Lingyun Zou Yongcheng Chen Zuolong Liu Yue Huang Qiao Jin Jian Ji MOE Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory of Transvascular Implantation Devices The Second Affiliated Hospital Zhejiang University School of MedicineHangzhou 310009China

Biofilm-associated bacterial infection brings serious threats to global public health owing to serious antibiotic *** is urgently needed to develop innovative strategies to combat biofilm-associated bacterial *** stand out as the last line of defense against Gram-negative ***,serious nephrotoxicity of polymyxins severely limits their clinical ***,a hypoxia-responsive liposome is designed as the nanocarrier of polymyxin B(PMB)to combat biofilms developed by Gram-negative bacteria.A metronidazole modified lipid(hypoxia-responsive lipid(HRLipid))is synthesized to fabricate hypoxia-responsive liposomes(HRLip).PMB loaded hypoxia-responsive liposomes(HRL-PMB)is then prepared to mitigate the nephrotoxicity of PMB while preserving its excellent bactericidal ***-PMB shows very low hemolysis and cytotoxicity due to liposomal encapsulation of *** can be readily released from HRL-PMB in response to hypoxic biofilm microenvironment,exerting its bactericidal activity to realize biofilm *** excellent in vivo antibiofilm ability of HRL-PMB is confirmed by a Pseudomonas aeruginosa infected zebrafish model and a *** pneumonia infection ***,HRL-PMB can greatly reduce the nephrotoxicity of PMB after intravenous *** hypoxia-sensitive liposomes held great promise to improve the biosafety of highly toxic antibiotics while preserving their intrinsic bactericidal ability,which may provide an innovative strategy for combating biofilm-associated infections.

关键词： bacterial biofilm hypoxia liposome polymyxin B nephrotoxicity

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Chitosan-calcium carbonate scaffold with high mineral content and hierarchical structure for bone regeneration

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Smart Materials in Medicine 2023年第1期4卷 552-561页

作者： Liu, Xiaoyang Wang, Zhengke MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Zhejiang Province Hangzhou310058 China

Bone regeneration scaffolds loaded with osteoblast-related cells or cytokines exhibit outstanding therapeutic potential during large-scale bone defect repair. However, limited sources of cells, opportune choosing of growth factors and their concentration, as well as immunological rejection, seriously hinder its clinical application. Developing a scaffold that can effectively recruit MSCs in situ and achieve endogenous bone regeneration is a viable strategy. Herein, we report a chitosan-calcium carbonate scaffold with high mineral content and centripetal pore arrangement using a simple in situ mineralization method. In vivo results first time demonstrate that the scaffold with high calcium carbonate content can effectively recruit MSCs near the defect area, induce their osteogenic differentiation, and ultimately accelerate the process of bone regeneration. Considering the accessible preparation and excellent osteogenicity, the chitosan-calcium carbonate scaffold possesses high potential for the therapeutics of massive bone defects. © 2023 The Authors

关键词： Chitosan

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The relief of hypoxic microenvironment using an O_(2) self-sufficient fluorinated nanoplatform for enhanced photodynamic eradication of bacterial biofilms

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Nano Research 2022年第2期15卷 1636-1644页

作者： Lingyun Zou Dengfeng Hu Fanjin Wang Qiao Jin Jian Ji MOE Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

Hypoxia,an important characteristic of bacterial biofilms,can hinder the generation of reactive oxygen species(ROS)in photodynamic therapy(PDT),leading to reduced therapeutic efficacy of *** order to address this issue,fluorinated liposome was fabricated as an oxygen-sufficient nanoplatform for enhanced photodynamic eradication of bacterial *** liposomes(denoted as Lip-Ce6-PFH@O_(2))were prepared by co-encapsulation of O_(2) carrier perfluorohexane(PFH)and photosensitizer chlorin e6(Ce_(6)).Lip-Ce6-PFH@O_(2) could achieve efficient biofilm penetration due to the positively charged *** hypoxic microenvironment of biofilms would then be relieved,leading to the generation of more ROS under laser ***,the bactericidal capability of PDT could be significantly improved because of the co-delivered O_(2) carrier ***-Ce6-PFH@O_(2) exhibited much better antibiofilm ability than that of Lip-Ce6 both in vitro and in ***,Lip-Ce6-PFH@O_(2) also effectively alleviated inflammation symptoms and accelerated wound healing in the mice *** general,this study provides a new paradigm to enhance the therapeutic efficacy of PDT for efficient biofilm eradication.

关键词： biofilm hypoxia perfluorohexane liposome photodynamic therapy

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