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Wrinkling modes of graphene oxide assembled on curved surfaces

Nano Research 2023年第2期16卷 1801-1809页

作者： Kaiwen Li Zhanpo Han Lidan Wang Jiaqing Wang Chuanwei Zhang Jiahao Lin Shiyu Luo Li Peng Wenzhang Fang Yingjun Liu Ziliang Wu Yeqiang Tan Chao Gao Zhen Xu MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringKey Laboratory of Adsorption and Separation Materials&Technologies of Zhejiang ProvinceZhejiang UniversityHangzhou 310027China State Key Laboratory of Bio-Fibers and Eco-Textiles Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile TechnologySchool of Materials Science and EngineeringQingdao UniversityQingdao 266071China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030000China

Assembling two-dimensional(2D)sheets into macroscopic three-dimensional(3D)forms has created a promising material family with rich *** wrinkles are intrinsic features of 2D sheets in their 3D ***,the precise wrinkling modulation optimizes the transition of outstanding properties of 2D sheets to expected performances of assembled materials and dominates their fabrication *** wrinkling evolution of 2D sheets assembling onto flat surfaces has been extensively understood,however,the wrinkling behaviors on the more generally curved surface still remain ***,we investigate the wrinkling behaviors of graphene oxide sheets assembled onto curved surfaces and reveal the selection rule of wrinkling modes that determined by the curvature mismatch between 2D sheets and target *** uncover that three wrinkling modes including isotropic cracked land,labyrinth,and anisotropic curtain phases,respectively emerge on flat,spherical,and cylindrical surfaces.A favorable description paradigm is offered to quantitatively measure the complex wrinkling patterns and assess the curvature mismatch constraint underlying the wrinkling mode *** research provides a general and quantitative description framework of wrinkling modulation of 2D materials such as high performance graphene fibers,and guides the precise fabrication of particles and functional coatings.

关键词： two-dimensional(2D)sheets three-dimensional(3D)assembles curved surfaces wrinkling modes selection curvature mismatch constraint wrinkling modulation

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“Super-heterojunctioned” thermoelectric polymers

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Chinese Chemical Letters 2025年第2期36卷 4-5页

作者： Hanying Li Wee-Liat Ong MOE Key Laboratory of Macromolecular Synthesis and Functionalization International Research Center for X PolymersDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China ZJU-UIUC Institute College of Energy EngineeringZhejiang UniversityHaining 314400China

Given the increasing demand for distributed electricity,there is a burning desire to harvest electricity from renewable sources using environmentally friendly *** (TE) materials can meet this requirement not only because of their ability to convert heat directly into electricity,enabling energy harvesting from waste heat and natural heat resources,but also because more than 60%of the energy is lost as waste heat [1].The discovery of the TE effect dates back to the 1820s when *** observed electricity generation at the junction of two conductors with different ***,when a voltage is applied to TE materials,they can create a temperature difference to enable solid-state cooling (known as the Peltier effect).Therefore,the TE effect promises both sustainable energy solutions and temperature control *** the past two decades,the urgent demand for powering ubiquitous Internet of Things devices has sparked significant interest in flexible thermoelectrics(F-TEs),which raises an intriguing question:Is the intrinsically flexible polymer an important candidate for state-of-the-art F-TEs applications?

关键词： electricity harvesting Seebeck

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The d-p orbital hybridization engineered RhPb bimetallene for efficient ethanol electrooxidation

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Science China Chemistry 2025年第5期68卷 1897-1905页

作者： Bo-Qiang Miao Zi-Han Yuan Qing-Ling Hong Xuan Ai Fu-Min Li Pei Chen Pu-Jun Jin Yu Chen Key Laboratory of Macromolecular Science of Shaanxi Province Shaanxi Key Laboratory for Advanced Energy DevicesSchool of Materials Science and EngineeringShaanxi Normal University MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of PhysicsXi'an Jiaotong University

The construction of bimetallic sites with strong interaction can effectively regulate the electronic structure and modulate the adsorption behavior of adsorbate species on bimetallic catalysts, thereby overcoming catalytic bottlenecks. Herein, an RhPb bimetallene(RhPb b-ML) with the strong d-p orbital hybridization is proposed for efficiently catalyzing ethanol oxidation reaction(EOR). Notably, the specific EOR activity of RhPb b-ML is 32 and 6.8 times higher than those of Rh metallene and commercial Pt/C, respectively. Theoretical calculation analysis reveals that the introduction of Pb atoms into the Rh lattice leads to an upward shift of the d-band center of Rh on RhPb(111). The shift in the d-band center is primarily attributed to the different degrees of hybridization between the d sub-orbitals of Rh and the p-orbitals of Pb, which enhance the adsorption of key species and improve EOR activity and selectivity. In-situ infrared tests and high-performance liquid chromatography tests together confirm that RhPb b-ML not only exhibits enhanced ability for the breakage of C–C bonds but also effectively suppresses the generation of absorbed CO. Furthermore, the strategy of enhancing catalyst performance through the strong d-p orbital hybridization has been demonstrated to be scalable to other bimetallic catalysts, providing valuable insights for the design of advanced catalysts.

关键词： RhPb bimetallene d-p orbital hybridization electronic structure ethanol oxidation reaction selectivity

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Exogeneous metal ions as therapeutic agents in cardiovascular disease and their delivery strategies

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Regenerative Biomaterials 2024年第2期3卷 1-16页

作者： Xiaoqian Hong Geer Tian Yang Zhu Tanchen Ren Department of Cardiology of the Second Affliated Hospital and State Key Laboratory of Transvascular Implantation Devices Cardiovascular Key Laboratory of Zhejiang ProvinceZhejiang University School of MedicineHangzhou 310o09China Binjiang Institute of Zhejiang University Hangzhou 310053China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

Metal ions participate in many metabolic processes in the human body,and their homeostasis is crucial for *** cardiovascular diseases(CVDs),the equilibriums of metal ions are frequently interrupted,which are related to a variety of disturbances of physiological processes leading to abnormal cardiac *** supplement of metal ions has the potential to work as therapeutic strategies for the treatment of *** with other therapeutic drugs,metal ions possess broad availability,good stability and safety and diverse drug delivery *** delivery strategies of metal ions are important to exert their ther-apeutic effects and reduce the potential toxic side effects for cardiovascular applications,which are also receiving increasing *** local delivery strategies for metal ions based on various biomaterials are constantly being *** this review,we comprehensively summarized the positive roles of metal ions in the treatment of cVDs from three aspects:protecting cells from oxidative stress,inducing angiogenesis,and adjusting the functions of ion *** addition,we introduced the transferability of metal ions in vascular reconstruction and cardiac tissue repair,as well as the currently available engineered strategies for the precise delivery of metal ions,such as integrated with nanoparticles,hydrogels and scaffolds.

关键词： metal ions cardiovascular disease tissue engineering oxidative stress angiogenesis ion channel

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Decellularized extracellular matrix materials for treatment of ischemic cardiomyopathy

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Bioactive Materials 2024年第3期33卷 460-482页

作者： Wei Liu Xiangmei Zhang Xiaokai Jiang Binyao Dai Liwen Zhang Yang Zhu Center for Medical Device Evaluation National Medical Products AdministrationBeijing100037China Greater Bay Area Center for Medical Device Evaluation and Inspection National Medical Products AdministrationShenzhen518045China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Hangzhou310027China Zhejiang University Hangzhou310027China State Key Laboratory of Transvascular Lmplantation Devices Department of Polymer Science and EngineeringZhejiang UniversityHangzhou310027China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Zhejiang UniversityHangzhou310027China Binjiang Institute of Zhejiang University Hangzhou310053China

Ischemic cardiomyopathy(ICM)affect millions of patients *** extracellular matrix materials(dECM)have components,microstructure and mechanical properties similar to healthy cardiac tissues,and can be manufactured into various forms of implantable biomaterials including injectable hydrogels or epicardial patches,which have been extensively reported to attenuate pathological left ventricular remodeling and maintain heart ***,dECM medical devices for ICM treatment have been approved for clinical use or studied in clinical trials,exhibiting considerable translation ***,growth factors and other bioactive agents have been incorporated with different dECM materials to improve the therapeutic *** addition,more detailed aspects of the biological effects and mechanisms of dECM treatment are being *** review summarized recent advances in dECM materials from variable sources for cardiac repair,including extraction of extracellular matrix,cell integration,smart manufacturing of injectable hydrogels and cardiac patch materials,and their therapeutic ***,this review provides an outlook on the cutting-edge development directions in the field.

关键词： Decellularized extracellular matrix Ischemic cardiomyopathy Injectable dECM dECM patches Myocardial infarction

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Design of fluorine-rich poly(arylene amine) membranes for liquid aliphatic hydrocarbon separation

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Science China Chemistry 2025年第5期68卷 1635-1636页

作者： Chao Zhang Zhi-Kang Xu MOE Key Lab of Macromolecular Synthesis and Functionalization Key Lab of Adsorption and Separation Materials & Technologies of Zhejiang ProvinceDepartment of Polymer Science and EngineeringZhejiang University The “Belt and Road” Sino-Portugal Joint Lab on Advanced Materials International Research Center for X PolymersZhejiang University

Separation of liquid aliphatic hydrocarbons is of fundamental interest and practical importance in the development of liquid fuels and basic chemical feedstocks [1]. As a classic platform to synthesize high-value hydrocarbons using nonfossil feedstocks, the Fischer-Tropsch process usually produces a broad distribution of aliphatic alkanes, accompanied with some olefin byproducts [2].

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Doxorubicin hydrochloride and L-arginine co-loaded nanovesicle for drug resistance reversal stimulated by near-infrared light

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Asian Journal of Pharmaceutical Sciences 2022年第6期17卷 924-937页

作者： Linping Jiang Kesi Wang Liyan Qiu Ministry of Educational(MOE)Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

Drug resistance is accountable for the inadequate outcome of chemotherapy in *** newly emerging role of nitric oxide(NO)to conquer drug resistance has been recognized as a potential ***,it remains a great challenge to realize targeted delivery as well as accurate release of NO at desired ***,we developed a PEGylated indocyanine green(m PEG-ICG)integrated nanovesicle system(PIDA)to simultaneously load doxorubicin hydrochloride(DOX·HCl)and the NO donor L-arginine(L-Arg),which can produce NO triggered by NIR light irradiation and exert multimodal therapy to sensitize drug-resistant *** 808 nm irradiation,the NO released from PIDA led to a decrease in mitochondrial membrane potential,an increase in ROS and significant ATP depletion in K562/ADR cells,thus inhibiting cell growth and resolving the problem of drug ***,the in vivo experiment on K562/ADR-bearing nude mice indicated that PIDA nanovesicles achieved significant anticancer efficacy with a tumor inhibition rate of 80.8%.Above all,PIDA nanovesicles offer guidance for designing nanoplatforms for drug-resistant cancer treatment.

关键词： Nitric oxide L-arginine Doxorubicin Indocyanine green Drug resistance Nanovesicle

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Ion Migration and Accumulation in Halide Perovskite Solar Cells

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Chinese Journal of Chemistry 2023年第7期41卷 861-876页

作者： Lijian Zuo Zexin Li Hongzheng Chen State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhouZhejiang310027 China Zhejiang University-Hangzhou Global Scientific and Technological Innovation Center HangzhouZhejiang310014 China

Comprehensive Summary The halide perovskite semiconductors-based solar cells(PVSCs)show great promise as next-generation renewable energy sources,with the merits of low cost,high performance,good flexibility,etc.A major difference distinguishing the perovskite semiconductors from others lies in their ionic *** intrinsic property induces“freely-moving”ions to migrate and accumulate in the perovskite films and devices under different external *** a charge carrier,these processes will strongly couple with the electronic process,and dramatically affect the performance and stability of *** review summarizes and discusses the recent progresses and fundamental understandings of ion migration and accumulation behaviors in ***,the basic principles of the general ion migration are ***,following the fundamental understandings,the critical factors,e.g.,ion migration activation energy,ion density,ion diffusion coefficient,etc.,are extracted to understand the ion migration and accumulation in perovskite ***,the principles governing ion accumulation behaviors under different external stresses are ***,the effect of ion migration and accumulation on band bending,and device performance is ***,we hope this review provides a tutorial and insightful perspective regarding the most prominent ionic feature of perovskite semiconductors and their application for photovoltaics.

关键词： Semiconductors Perovskite phases Crystal engineering Defects Photovoltaic

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Unaxisymmetric Non-Fused Electron Acceptors for Efficient Polymer Solar Cells

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Chinese Journal of Polymer Science 2022年第8期40卷 944-950,I0009页

作者： Si-Ya Liu Di Wang Tian-Jiao Wen Guan-Qing Zhou Hai-Ming Zhu Hong-Zheng Chen Chang-Zhi Li State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou310027China Department of Chemistry Zhejiang UniversityHangzhou310027China

To develop photovoltaics embracing the both features of high performance and low cost has drawn attentions of researchers,yet representing the significant *** this work,two non-fused ring acceptors(NFRAs),namely p-PTIC4Cl and t-PTIC4Cl,were developed via a short synthetic *** tethering unaxisymmetric aromatic chains to thienyl bridge of NFRAs,we revealed that the tuning of aromatic chains allows modulating the self-assembly and stacking of NFRAs in solid,hence influencing their optoelectronic and photovoltaic *** results,p-PTIC4Cl,consisting of 3-hexylbenzene with large axial angle to backbone,can achieve superior PCE of 11.30%than that of t-PTIC4Cl with 2-hexylthiophene chains(PCE of 6.49%),when pairing with polymer donor *** of the only subtle structural difference,the p-PTIC4Cl based blend films possess better exciton dissociation and charge transfer rates,as well as photostability,to those of t-PTIC4Cl based blends.

关键词： Polymer solar cells Non-fused ring acceptor Unaxisymmetric aromatic chains Photostability

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C176-loaded and phosphatidylserine-modified nanoparticles treat retinal neovascularization by promoting M2 macrophage polarization

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Bioactive Materials 2024年第9期39卷 392-405页

作者： An Shao Lulu Jin Yanni Ge Ziqiang Ye Mingyu Xu Yifan Zhou Yingyu Li Linyan Wang Pinglong Xu Kai Jin Zhengwei Mao Juan Ye Eye Center The Second Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou310009China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou310027China MOE Key Laboratory of Biosystems Homeostasis&Protection and Zhejiang Provincial Key Laboratory of Cancer Molecular Cell Biology Life Sciences InstituteZhejiang UniversityHangzhou310030China

Retinal neovascularization(RNV),a typical pathological manifestation involved in most neovascular diseases,causes retinal detachment,vision loss,and ultimately irreversible *** intravitreal injections of anti-VEGF drugs were developed against RNV,with limitations of incomplete responses and adverse ***,a new treatment with a better curative effect and more prolonged dosage is ***,we induced macrophage polarization to anti-inflammatory M2 phenotype by inhibiting cGAS-STING signaling with an antagonist C176,appreciating the role of cGAS-STING signaling in the retina in pro-inflammatory M1 polarization.C176-loaded and phosphatidylserine-modified dendritic mesoporous silica nanoparticles were constructed and examined by a single intravitreal *** biosafe nanoparticles were phagocytosed by retinal macrophages through a phosphatidylserine-mediated“eat me”signal,which persistently release C176 to suppress STING signaling and thereby promote macrophage M2 polarization specifically.A single dosage can effectively alleviate pathological angiogenesis phenotypes in murine oxygen-induced retinopathy *** conclusion,these C176-loaded nanoparticles with enhanced cell uptake and long-lasting STING inhibition effects might serve as a promising way for treating RNV.

关键词： Retinal neovascularization Macrophage polarization cGAS-STING pathway Nanocarrier

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