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Construction of all-organic low dielectric polyimide hybrids via synergistic effect between covalent organic framework and cross-linking structure

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Nano Materials science 2023年第4期5卷 429-438页

作者： Wanjing Zhao Zhaoyang Wei Chonghao Lu Yizhang Tong Jingshu Huang Xianwu Cao Dean Shi Robert KYLi Wei Wu Key Laboratory of Polymer Processing Engineering of Ministry of Education Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced ManufacturingSchool of Mechanical and Automotive EngineeringSouth China University of TechnologyGuangzhou510640China Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education Key Laboratory for the Green Preparation and Application of Functional MaterialsHubei Key Laboratory of Polymer MaterialsFaculty of Materials Science and EngineeringHubei UniversityWuhan430062China Department of Materials Science and Engineering City University of Hong KongTat Chee AvenueKowloonHong Kong Special Administrative Region of China Jihua Laboratory Foshan528200China

Polyimide(PI)is a promising electronic packaging material,but it remains challenging to obtain an all-organic PI hybrid film with decreased dielectric constant and loss without modifying the ***,a series of allorganic PI hybrid films were successfully prepared by introducing the covalent organic framework(COF),which could induce the formation of the cross-linking structure in the PI *** to the synergistic effects of the COF fillers and the cross-linking structure,the PI/COF hybrid film containing 2 wt%COF exhibited the lowest dielectric constant of 2.72 and the lowest dielectric loss(tanδ)of 0.0077 at 1 *** is attributed to the intrinsic low dielectric constant of COF and a large number of mesopores within the ***,the cross-linking network of PI prevents the molecular chains from stacking and improves the fraction of free volume(FFV).The molecular dynamics simulation results are well consistent with the dielectric properties ***,the PI/COF hybrid film with 5 wt%COF showed a significant enhancement in breakdown strength,which increased to 412.8 kV/mm as compared with pure *** addition,the PI/COF hybrid film achieve to reduce the dielectric constant and thermal expansion coefficient(CTE).It also exhibited excellent thermal,hydrophobicity,and mechanical *** all-organic PI/COF hybrid films have great commercial potential as next-generation electronic packaging materials.

关键词： Polyimide Covalent organic framework All-organic Cross-linking structure Dielectric property Hybrid film

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Wearable and interactive multicolored photochromic fiber display

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Light(science & Applications) 2024年第3期13卷 454-465页

作者： Pan Li Yuwei Wang Xiaoxian He Yuyang Cui Jingyu Ouyang Ju Ouyang Zicheng He Jiayu Hu Xiaojuan Liu Hang Wei Yu Wang Xiaoling Lu Qian Ji Xinyuan Cai Li Liu Chong Hou Ning Zhou Shaowu Pan Xiangru Wang Huamin Zhou Cheng-Wei Qiu Yan-Qing Lu Guangming Tao State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and Engineering and Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Vascular Aging(HUST) Ministry of EducationWuhan 430030China School of Optoelectronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore National Laboratory of Solid State Microstructures Key Laboratory of Intelligent Optical Sensing and ManipulationCollege of Engineering and Applied Sciencesand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210023China School of Performing Arts Wuhan Conservatory of MusicWuhan 430060China School of Mechanical Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China School of Architecture and Urban Planning Huazhong University of Science and TechnologyWuhan 430074China School of Fashion Beijing Institute of Fashion TechnologyBeijing 100029China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China Tongji Medical College Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China

Endowing flexible and adaptable fiber devices with light-emitting capabilities has the potential to revolutionize the current design philosophy of intelligent,wearable interactive ***,significant challenges remain in developing fiber devices when it comes to achieving uniform and customizable light effects while utilizing lightweight ***,we introduce a mass-produced,wearable,and interactive photochromic fiber that provides uniform multicolored light *** designed independent waveguides inside the fiber to maintain total internal reflection of light as it traverses the *** impact of excessive light leakage on the overall illuminance can be reduced by utilizing the saturable absorption effect of fluorescent materials to ensure light emission uniformity along the transmission *** addition,we coupled various fluorescent composite materials inside the fiber to achieve artificially controllable spectral radiation of multiple color systems in a single *** prepared fibers on mass-produced kilometer-long using the thermal drawing *** fibers can be directly integrated into daily wearable devices or clothing in various patterns and combined with other signal input components to control and display patterns as *** work provides a new perspective and inspiration to the existing field of fiber display interaction,paving the way for future human–machine integration.

关键词： fiber interactive colored

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Methacrylated gelatin and platelet-rich plasma based hydrogels promote regeneration of critical-sized bone defects

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Regenerative Biomaterials 2024年第4期3卷 66-81页

作者： Shichao Lian Zhiyu Mu Zhengchao Yuan Muhammad Shafiq Xiumei Mo Weidong Mu Department of Traumatic Orthopaedics Shandong Provincial HospitalShandong UniversityJinanShandong 250012China Zoucheng People’s Hospital ZouchengShandong 273500China Department of Medical Physics and Biomedical Engineering University of LondonLondon WC1E 6BTUK State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineCollege of Biological Science and Medical EngineeringDonghua UniversityShanghai 201620PR China Innovation Center of NanoMedicine(iCONM) Kawasaki Institute of Industrial PromotionKawasaki-KuKawasaki 210-0821Japan

Physiological repair of large-sized bone defects requires instructive scaffolds with appropriate mechanical properties,biocompatibility,biodegradability,vasculogenic ability and *** objective of this study was to fabricate in situ injectable hydrogels using platelet-rich plasma(PRP)-loaded gelatin methacrylate(GM)and employ them for the regeneration of large-sized bone *** performed various biological assays as well as assessed the mechanical properties of GM@PRP hydrogels alongside evaluating the release kinetics of growth factors(GFs)from *** GM@PRP hydrogels manifested sufficient mechanical properties to support the filling of the tissue *** biofunction assay,the GM@PRP hydrogels significantly improved cell migration and ***,transcriptome RNA sequencing of human umbilical vein endothelial cells and bone marrow-derived stem cells were performed to delineate vascularization and biomineralization abilities of GM@PRP *** GM@PRP hydrogels were subcutaneously implanted in rats for up to 4 weeks for preliminary biocompatibility followed by their transplantation into a tibial defect model for up to 8 weeks in *** defects treated with GM@PRP hydrogels manifested significant bone regeneration as well as angiogenesis,biomineralization,and collagen *** on the biocompatibility and biological function of GM@PRP hydrogels,a new strategy is provided for the regenerative repair of large-size bone defects.

关键词： large-sized bone defect repair platelet-rich plasma hydrogel tissue scaffold gelatin methacrylate

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Dual incorporations of ZIF-8 and hydrochar on CNF membrane for superior removal performance toward various pollutants

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Cellulose 2025年 1-16页

作者： Yang, Eunseok Lee, SeungMin Kim, Suhnue Park, Yeji Park, Hyunmyung Kim, Hyungsup Department of Materials Science and Engineering Konkuk University Seoul Republic of Korea Advanced Materials Program Department of Materials Science and Engineering Konkuk University Seoul Republic of Korea Division of Chemical Engineering Konkuk University Seoul Republic of Korea

This study explores the dual incorporations of ZIF-8 (zeolitic imidazolate framework-8) and hydrochar into CNF (cellulose nanofibril)-based membranes to enhance their adsorption and filtration performance. ZIF-8 immobilization and hydrothermal treatment on TOCN (TEMPO-mediated oxidized cellulose nanofibril) increased the surface area, induced heterogeneous pore distribution, and introduced diverse driving forces for adsorption. The adsorption behaviors of the membranes were studied using three different model dyes, i.e. MB (methylene blue) as a cationic dye, MO (methyl orange) as an anionic dye, and VB12 (vitamin B12) as a zwitterionic dye. The dual treated membrane exhibited significantly improved adsorption capacities, achieving up to 166.2, 89.1, and 80.5 mg/g in 10 ppm MB, MO, and VB12 solutions, respectively. Additionally, the integration of ZIF-8 and hydrochar facilitated effective removal of antibiotics (tetracycline and norfloxacin) by filtration, achieving removal rates above 93%. These results represent one of the highest adsorption and filtration capacities recorded among cellulose-based adsorbents to date. The synergistic impacts of structures and extra driving forces provided better removal performances by adsorption and filtration toward model dyes and antibiotics, simultaneously.

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In situ sulfur-doped mesoporous tungsten oxides for gas sensing toward benzene series

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Chinese chemical Letters 2024年第7期35卷 502-507页

作者： Yu Deng Yan Liu Yonghui Deng Jinsheng Cheng Yidong Zou Wei Luo State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Department of Chemistry State Key Laboratory of Molecular Engineering of PolymersShanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsiChEMFudan UniversityShanghai 200433China Department of Polymeric Materials School of Materials Science and EngineeringTongji UniversityShanghai 201804China Henry-Fork School of Food Sciences Shaoguan UniversityShaoguan 512005China State Key Lab of Transducer Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China

Benzene series as highly toxic gases have inevitably entered human life and produce great threat to human health and ecological environment,and thus it is distinctly meaningful to monitor benzene series with quickly,real-time and efficient ***,novel sulfur-doped mesoporous WO_(3)materials were synthesized via classical in-situ solvent evaporation induced co-assembly strategy combined with doping engineering,which possessed highly crystallized frameworks,high specific surface area(40.9–63.8 m^(2)/g)and uniform pore size(~18 nm).Benefitting from abundant oxygen vacancy and defects via S-doping,the tailored mesoporous S/m WO_(3)exhibited excellent benzene sensing performance,including high sensitivity(50 ppm vs.48),low detection limit(ca.500 ppb),outstanding selectivity and favorable *** addition,the reduction of band gap resulted from S-doping promotes the carrier migration in the sensing materials and the reaction at the gas–solid sensing *** provides brand-new approach to design sensitive materials with multiple reaction sites.

关键词： Mesoporous materials Benzene series Tungsten oxides Sulfur doping Gas sensor

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Photostimulus-responsive Non-covalent Interactions in polymers:A Review

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Chinese Journal of polymer science 2025年第5期43卷 677-694页

作者： Phakamat Limarun Kwanchai Buaksuntear Siriwan Jansrinak Ariya Julbust Saree Phongphanphanee Hassarutai Yangthong Supitta Suethao Pornsiri Kaewpradit Pairote Jittham Sedthawatt Sucharitpwatskul Karine Mougin Arnaud Spangenberg Antoine Le Duigou Wirasak Smitthipong Specialized Center of Rubber and Polymer Materials in Agriculture and Industry(RPM) Department of Materials ScienceFaculty of ScienceKasetsart UniversityBangkok10900Thailand P Hub of talents in natural rubber under the National Research Council of Thailand National Research Council of Thailand(NRCT)Bangkok10900Thailand Department of Chemical Engineering Faculty of EngineeringPrince of Songkla UniversitySongkhla90110Thailand National Metal and Materials Technology Center(MTEC) National Science and Technology Development Agency(NSTDA)Pathum Thani12120Thailand Institute of Materials Science of Mulhouse CNRS-UMR 7361University of Haute-AlsaceMulhouseFrance IRDL UMR CNRS 6027 Bionics GroupUniversity of South BritanyF-56100LorientFrance

This study reviews light-responsive polymers in various applications,including drug delivery,information storage,sensor,self-healing material,antibacterial or anti-fouling,and environmental ***-responsive polymers are a new material type being developed for various medical,electronics,engineering,and environmental *** working principle of light-responsive materials is based on metalligand interactions or non-covalent interactions between polymer functional groups,metal ions,and other filler functional *** irradiation causes physical and mechanical changes in drug delivery and antibacterial systems,which results in the materials releasing more drugs or antibacterial *** materials in information storage devices and sensors are exposed to light,they can change color or *** has been applied for data storage to reveal QR codes under UV ***,this review discusses the thermodynamic aspects and computer modeling of light-responsive materials to emphasize the importance and development of these ***,light-responsive polymer development for various applications is presented.

关键词： Photostimulus-responsive materials Non-covalent interactions Thermodynamics Computer modeling Smart materials

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Bio-derived crystalline silk nanosheets for versatile macroscopic assemblies

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Nano Research 2022年第6期15卷 5538-5544页

作者： Baochang Cheng Zhouyue Lei Peiyi Wu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of ChemistryChemical Engineering and BiotechnologyCenter for Advanced Low-Dimension MaterialsDonghua UniversityShanghai 201620China John A.Paulson School of Engineering and Applied Sciences Harvard UniversityCambridgeMA 02138USA State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Laboratory of Advanced MaterialsFudan UniversityShanghai 200433China

Silk fibroin with sophisticated hierarchical architectures from nano to macro scale shows excellent mechanical properties,good biocompatibility,and outstanding *** particular,the crystalline region in silk fibroin contributes high strength and ***,it is difficult to obtain the crystalline silk nanofibrils or nanosheets through top-down *** existing silk-derived components are mainly amorphous and sacrifice the delicate structure of the pristine ***,we report a gentle method to extract the crystalline silk nanosheet(SNS)from the degummed silk *** crystalline SNS has seven strands ofβ-sheet nanocrystal layer and shows a thickness of 2.75 *** can assemble into a membrane via a vacuum filtration process and shows high transparency,excellent thermal stability,outstanding cytocompatibility,and efficient dye ***,without external stimuli,the crystalline SNS is capable of reversibly self-assembling to well-organized *** crystalline SNS is not only a new member of silk fibroin derivatives,but also a promising assemblable unit for versatile *** anticipate this work will provide a new insight into the construction and applications of diverse two-dimensional(2D)functional silk materials.

关键词： silk fibroin hierarchical structure top-down exfoliation crystalline nanosheet reversible self-assembly

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Interface engineering of Zn meal anodes using electrochemically inert Al_(2)O_(3)protective nanocoatings

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Nano Research 2022年第8期15卷 7227-7233页

作者： Rui Wang Qiongfei Wu Minjie Wu Jiaxian Zheng Jian Cui Qi Kang Zhengbing Qi JiDong Ma Zhoucheng Wang Hanfeng Liang State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Key Laboratory of Functional Materials and Applications of Fujian Province School of Materials Science and EngineeringXiamen University of TechnologyXiamen 361024China Department of Polymer Science and Engineering Shanghai Key Laboratory of Electrical Insulation and Thermal AgeingShanghai Jiao Tong UniversityShanghai 200240China

Aqueous rechargeable Zn-ion batteries are regarded as a promising alternative to lithium-ion batteries owing to their high energy density,low cost,and high ***,their commercialization is severely restricted by the Zn dendrite formation and side ***,we propose that these issues can be minimized by modifying the interfacial properties through introducing electrochemically inert Al_(2)O_(3)nanocoatings on Zn meal anodes(Al_(2)O_(3)@Zn).The Al_(2)O_(3)nanocoatings can effectively suppress both the dendrite growth and side *** a result,the Al_(2)O_(3)@Zn symmetric cells show excellent electrochemical performance with a long lifespan of more than 4,000 h at 1 mA·cm^(−2)and 1 mAh·cm^(−2).Meanwhile,the assembled Al_(2)O_(3)@Zn//V_(2)O_(5)full cells can deliver a high capacity(236.2 mAh·g^(−1))and long lifespan with a capacity retention of 76.11%after 1,000 cycles at 4 A·g^(−1).

关键词： aqueous Zn-ion batteries Zn dendrites side reactions Al2O3 protective nanocoatings interface engineering

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Bioceramic-mediated chondrocyte hypertrophy promotes calcified cartilage formation for rabbit osteochondral defect repair

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Bioactive Materials 2024年第10期40卷 306-317页

作者： Rachel H.Koh Junhee Kim Jeong-Uk Kim Seunghyun L.Kim Arun Kumar Rajendran Seunghun SLee Heesoo Lee Joo Hyun Kim Ji Hoon Jeong Yongsung Hwang Jong Woo Bae Nathaniel S.Hwang School of Chemical and Biological Engineering Institute of Chemical ProcessesSeoul National UniversitySeoul08826South Korea Interdisciplinary Program in Bioengineering Seoul National UniversitySeoul08826South Korea Department of Biomedical Engineering Dongguk UniversitySeoul10326South Korea Soonchunhyang Institute of Medi-bio Science(SIMS) Soonchunhyang UniversityCheonan31151South Korea Department of Integrated Biomedical Science Soonchunhyang UniversityAsan31538South Korea Department of Orthopaedic Surgery Konkuk University Chungju HospitalKonkuk University School of MedicineChungju27376South Korea BioMAX Institute Seoul National UniversitySeoul08826South Korea

Osteochondral tissue is a highly specialized and complex tissue composed of articular cartilage and subchondral bone that are separated by a calcified cartilage *** or gradient scaffolds,often in conjunction with stem cells and growth factors,have been developed to mimic the respective layers for osteochondral defect *** this study,we designed a hyaline cartilage-hypertrophic cartilage bilayer graft(RGD/RGDW)with ***,we demonstrated that RGD peptide-modified chondroitin sulfate cryogel(RGD group)is chondro-conductive and capable of hyaline cartilage ***,we incorporated whitlockite(WH),a Mg^(2+)-containing calcium phosphate,into RGD cryogel(RGDW group)to induce chondrocyte hypertrophy and form collagen X-rich hypertrophic *** is the first study to use WH to produce hypertrophic ***-laden RGDW cryogel exhibited significantly upregulated expression of hypertrophy markers in vitro and formed ectopic hypertrophic cartilage in vivo,which mineralized into calcified cartilage in bone ***,RGD cryogel and RGDW cryogel were combined into bilayer(RGD/RGDW group)and implanted into rabbit osteochondral defect,where RGD layer supports hyaline cartilage regeneration and bioceramic-containing RGDW layer promotes calcified cartilage *** the RGD group(monolayer)formed hyaline-like neotissue that extends into the subchondral bone,the RGD/RGDW group(bilayer)regenerated hyaline cartilage tissue confined to its respective layer and promoted osseointegration for integrative defect repair.

关键词： Bioceramic Whitlockite Bilayer scaffold Chondrocyte hypertrophy Osteochondral defect repair

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Fabrication of versatile poly(xylitol sebacate)-co-poly(ethylene glycol) hydrogels through multifunctional crosslinkers and dynamic bonds for wound healing

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Acta Biomaterialia 2023年 170卷 344-359页

作者： Yeh, Ying-Yu Lin, Yi-Yun Wang, Ting-Teng Yeh, Yu-Jia Chiu, Ting-Hsiang Wang, Reuben Bai, Meng-Yi Yeh, Yi-Cheun Institute of Polymer Science and Engineering National Taiwan University Taipei Taiwan Institute of Biomedical Engineering National Taiwan University Taipei Taiwan Biomedical Engineering Program Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei Taiwan Institute of Food Safety and Health National Taiwan University Taipei Taiwan Graduate Institute of Biomedical Engineering National Taiwan University of Science and Technology Taipei Taiwan Adjunct Appointment to the Department of Biomedical Engineering National Defense Medical Center Taipei Taiwan Program National Taiwan University Taipei Taiwan GIP-TRIAD Master's Degree in Agro-Biomedical Science National Taiwan University Taipei Taiwan

Poly(polyol sebacate) (PPS) polymer family has been recognized as promising biomaterials for biomedical applications with their characteristics of easy production, elasticity, biodegradation, and cytocompatibility. Poly(xylitol sebacate)-co-poly(ethylene glycol) (PXS-co-PEG) has been developed to fabricate PPS-based hydrogels;however, current PXS-co-PEG hydrogels presented limited properties and functions due to the limitations of the crosslinkers and crosslinking chemistry used in the hydrogel formation. Here, we fabricate a new type of PXS-co-PEG hydrogels through the use of multifunctional crosslinkers as well as dynamic bonds. In our design, polyethyleneimine-polydopamine (PEI-PDA) macromers are utilized to crosslink aldehyde-functionalized PXS-co-PEG (APP) through imine bonds and hydrogen bonds. PEI-PDA/APP hydrogels present multiple functional properties (e.g., fluorescent, elastomeric, biodegradable, self-healing, bioadhesive, antioxidant, and antibacterial behaviors). These properties of PEI-PDA/APP hydrogels can be fine-tuned by changing the PDA grafting degrees in the PEI-PDA crosslinkers. Most importantly, PEI-PDA/APP hydrogels are considered promising wound dressings to promote tissue remodeling and prevent bacterial infection in vivo. Taken together, PEI-PDA/APP hydrogels have been demonstrated as versatile biomaterials to provide multiple tailorable properties and desirable functions to expand the utility of PPS-based hydrogels for advanced biomedical applications. Statement of significance: Various strategies have been developed to fabricate poly(polyol sebacate) (PPS)-based hydrogels. However, current PPS-based hydrogels present limited properties and functions due to the limitations of the crosslinkers and crosslinking chemistry used in the hydrogel formation. This work describes that co-engineering crosslinkers and interfacial crosslinking is a promising approach to synthesizing a new type of poly(xylitol sebacate)-co-poly(ethylene glycol) (PXS-co-

关键词： Polyols

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