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Perylene-Based Fluorescent Sizing Agent for Precise Evaluation of Permeability and Coating Property of Sizing Paste

Advanced Fiber Materials 2020年第5期2卷 279-290页

作者： Enqi Jin Zhengke Wang Qiaoling Hu Manli Li Jiugang Yuan MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China College of Textiles and Apparel Shaoxing UniversityShaoxing 312000China College of Textiles and Apparel Jiangnan UniversityWuxi 214122China

Warp sizing is considered as the most important process of weaving preparation in the textile *** quality of sized warp yarns is directly determined by the permeation and coating of sizing paste into/on warp ***,many significant flaws of the current method of permeability and coating property of sizing paste,such as low accuracy and narrow variety adaptability for sizing agents and warp yarns,have emerged in the evaluation *** order to eliminate the inherent flaws in the current method,the investigation chose chitosan(CS)as a representative of common sizing agents,introduced various amounts of perylene units onto molecular chains of the CS,and prepared a new functional sizing agent-fluorescent CS with different labeling degrees of ***,PVA-perylene was synthesized to evaluate the permeability and coating property of PVA sizing ***,three indexes to indicate the permeability and coating property of sizing paste,*** percentage,coating percentage and integrity percentage of sizing film,were evaluated using the CS-perylene and PVA-perylene derivatives *** to the fluorescence emitted by the perylene units,the three indexes can be determined accurately and conveniently depending on only fluorescent microscope and common image processing *** investigation efficiently solves the difficult problem of evaluating permeation and coating property of the pastes of both bio-based and petroleum-based sizing agents with appropriate degrees of labeling and has a significant guiding function on accurate determination of the quality of sized yarns.

关键词： Fluorescent sizing agent Perylene Chitosan PVA Permeability Coating property

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Correction: Near-infrared light triggered photothermal and photodynamic therapy with an oxygen-shuttle endoperoxide of anthracene against tumor hypoxia

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Polymer Chemistry 2024年第38期15卷 3925-3925页

作者： Zheng Yuan Shan Yu Fangyi Cao Zhengwei Mao Changyou Gao Jun Ling MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China zwmao@***

Correction for ‘Near-infrared light triggered photothermal and photodynamic therapy with an oxygen-shuttle endoperoxide of anthracene against tumor hypoxia’ by Zheng Yuan et al. , Polym. Chem. , 2018, 9 , 2124–2133...

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Electron-deficient core fused-ring based non-fullerene acceptor enables over 15% efficiency in single junction organic solar cells

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Science China Chemistry 2019年第4期62卷 403-404页

作者： Hongzheng Chen State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University

Organic solar cells(OSCs)are promising to access flexible,light weight and semi-transparent photovoltaic devices by low-cost solution ***,the fused-ring nonfullerene acceptors play an important role in promoting the research progress of the *** power conversion efficiencies(PCEs)have been rapidly boosted to over 14%in single junction OSCs with the development of new nonfullerene acceptors and the related devices[1-3].Although the PCEs of OSCs are still inferior to their inorganic counterparts,further improvement of the PCEs could be expected by the development of new photovoltaic materials.

关键词： Electron-deficient core single junction non-fullerene acceptor

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Polypropylene Separators with Robust Mussel-inspired Coatings for High Lithium-ion Battery Performances

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Chinese Journal of Polymer Science 2019年第10期37卷 1015-1022,I0005页

作者： Chao Zhang Hong-Qing Liang Jun-Ke Pi Guang-Peng Wu Zhi-Kang Xu Key Laboratory of Macromolecular Synthesis and Functionalization (Ministry of Education) and Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province Department of Polymer Science and Engineering Zhejiang University

The performances of lithium-ion batteries(LIBs)are dependent on the wettability and stability of porous *** coatings seem to be useful to improve the surface wettability of commercialized polyolefin ***,it is still a challenge to guarantee their stability under polar ***,we report a facile and versatile way to enhance the wettability and stability of polypropylene separators by constructing robust polydopamine(PDA)coatings triggered with CuSO4/*** coatings were conveniently deposited on the polypropylene separator surfaces and the PDA-coated separators exhibited the improved surface wettability and thermal *** electrolyte uptake increased nearly two folds from the pristine separator to the modified ***,the ionic conductivity also rose from 0.82 mS·cm^-1 to 1.30 mS·cm^-*** importantly,the CuSO4/H2O2-triggered PDA coatings were very stable under strong polar electrolytes,endowing the cells with excellent cycle performance and enhanced C-rate ***,the results unequivocally demonstrate that application of PDA coatings on polyolefin separator triggered by CuSO4/H2O2 is a facile and efficient method for improving the wettability and stability of separators for high LIBs performance.

关键词： Polypropylene separator Lithium-ion battery Surface wettability Dopamine Mussel-inspired coatings

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Macroencapsulation Devices for Cell Therapy

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Engineering 2022年第6期8卷 53-70页

作者： Wei Liu Yanfang Wang Jinqiang Wang Olivia LLanier Marissa EWechsler Nicholas A.Peppas Zhen Gu Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province College of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China Department of General Surgery Sir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhou 310016China Department of Biomedical Engineering The University of Texas at AustinAustinTX 78712USA Department of Biomedical Engineering and Chemical Engineering The University of Texas at San AntonioSan AntonioTX 78249USA Division of Molecular Pharmaceutics and Drug Delivery College of PharmacyThe University of Texas at AustinAustinTX 78712USA Zhejiang Laboratory of Systems and Precision Medicine Zhejiang University Medical CenterHangzhou 311121China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

Macroencapsulation has been widely used in cell therapy due to its capability to provide immune-privileged sites for implanted allogeneic or xenogeneic *** also serves to provide mechanical and physiochemical support for maintaining cell expansion and promoting therapeutic *** devices such as membrane-controlled release systems,hydrogels,micronee-dle(MN)array patches,and three-dimensional(3D)stents have shown promising in-lab and preclinical results in the maintenance of long-term cell survival and the strengthening of treatment *** studies focus on expanding the applications of these devices to new cell-based areas such as chimeric antigen receptor(CAR)-T cell delivery,cardiovascular disease therapy,and the exploration of new materials,construction methods,and working principles to augment treatment efficacy and prolong therapy ***,we survey innovative platforms and approaches,as well as translation outcomes,for advancing the performance and applications of macrodevices for cell-based therapies.A discussion and critique regarding future opportunities and challenges is also provided.

关键词： Drug delivery Cell encapsulation Cell therapy Cell transplantation Biomedical devices

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Migration of endothelial cells into photo-responsive hydrogels with tunable modulus under the presence of pro-inflammatory macrophages

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Regenerative Biomaterials 2019年第5期6卷 259-267页

作者： Wangbei Cao Xuguang Li Xingang Zuo Changyou Gao MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

Cell migration in three-dimensional environment is extremely important for tissue regeneration and other biological *** this work,a model system was developed to study how endothelial cells(ECs)migrate into photo-responsive hydrogels under the presence of pro-inflammatory *** hydrogel was synthesized from hyaluronic acid grafted with coumarin and methacrylate moieties by both carbon–carbon covalent linking and coumarin dimerization under UV irradiation at 365 *** structure of the hydrogel was conveniently modulated by UV irradiation at 254nm to decompose the coumarin dimers,leading to the significant decrease of modulus and increase of swelling ratio and mesh *** the presence of M1 macrophages,ECs were induced to migrate into the hydrogels with a different degree.A significant larger net displacement of ECs was found in the softer hydrogel obtained by irradiation with UV at 254nm than in the stiffer original one at day 7.

关键词： 3D cell migration immune-response hydrogel photo-responsive hyaluronic acid

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Manipulation of clusteroluminescence in carbonyl-based aliphatic polymers

Aggregate

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Aggregate 2022年第6期3卷 166-174页

作者： Ziteng Zhang Zuping Xiong Bo Chu Zhiming Zhang Yuan Xie Lei Wang Jing Zhi Sun Haoke Zhang Xing-Hong Zhang Ben Zhong Tang MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhouChina ZJU-Hangzhou Global Scientific and Technological Innovation Center HangzhouChina Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates South China University of TechnologyGuangzhouChina School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhenChina Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study The Hong Kong University of Science and TechnologyHong Kong SARChina Center for AIE Research College of Materials Science and EngineeringShenzhen UniversityShenzhenChina

Clusteroluminogens(CLgens),nonconjugated structures with visible luminescence at the clustering state,have recently received remarkable attention due to their great theoretical significance and practical *** carbonyl-based aliphatic polymers,(n,π*)transition of carbonyl groups and the through-space interactions have been demonstrated to play an important role in their clusteroluminescence(CL)properties,but it is still a big challenge to manipulate their CL at the molecular *** this work,six nonconjugated carbonyl-based polymers with different heteroatoms and steric hindrances were synthesized,and their photophysical properties were systematically *** polymers all showed CL but with different emission efficiency and *** and theoretical studies indicated that the CL properties could be manipulated by changing the electronic structures of carbonyl groups and the rigidity of polymer *** work not only gains further insights into the CL mechanism but also provides reliable strategies to design and manipulate non-conjugated luminescent materials.

关键词： clusteroluminescence through-space interactions (n,π*)transition

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Base-Gated Photochromism of C3-Symmetric Aiegens Through Multicyano-Sensitized Benzene Rings

SSRN

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SSRN 2022年

作者： Zhu, Yuqing Chen, Yangbing Xiong, Zuping Jiang, Mengyi Feng, Hui Qian, Zhaosheng College of Chemistry and Life Sciences Zhejiang Normal University Yingbin Road 688 Jinhua321004 China MOE Key Laboratory of Macromolecular Synthesis of Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou310027 China

It is extremely challenging but desirable to combine photoresponsive functions such as photochromism into aggregation-induced emission (AIE) molecules through a simple and low-cost strategy. Herein a series of C3-symmetric molecules with aggregation-induced emission and base-gated photochromism have been synthesized. The new compounds generally show excellent photophysical characteristics in solid-state with bright fluorescence and red-shifted emission by changing halogens and extending conjugation respectively. Compared with the more usual thiophene/furan-containing derivatives which show one-step discoloration, these C3-symmetric molecules which are constructed by low-cost benzene rings can only exhibit obvious photochromic behaviours in basic solutions, showing the great potential of detecting toxic organic bases and the base-gated function. Furthermore, we demonstrate this charming base-gated photochromism could be attributed to multicyano-sensitized benzene rings of these AIE luminogens through changing the number of cyano-vinylene bridges step-by-step. © 2022, The Authors. All rights reserved.

关键词： Photochromism

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Biomedical polymers: synthesis, properties, and applications

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Science China Chemistry 2022年第6期65卷 1010-1075页

作者： Wei-Hai Chen Qi-Wen Chen Qian Chen Chunyan Cui Shun Duan Yongyuan Kang Yang Liu Yun Liu Wali Muhammad Shiqun Shao Chengqiang Tang Jinqiang Wang Lei Wang Meng-Hua Xiong Lichen Yin Kuo Zhang Zhanzhan Zhang Xu Zhen Jun Feng Changyou Gao Zhen Gu Chaoliang He Jian Ji Xiqun Jiang Wenguang Liu Zhuang Liu Huisheng Peng Youqing Shen Linqi Shi Xuemei Sun Hao Wang Jun Wang Haihua Xiao Fu-Jian Xu Zhiyuan Zhong Xian-Zheng Zhang Xuesi Chen Key Laboratory of Biomedical Polymers of Ministry of Education&Department of Chemistry Wuhan UniversityWuhan430072China Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou215123China School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin300350China Key Laboratory of Biomedical Materials of Natural Macromolecules(Beijing University of Chemical Technology) Ministry of EducationBeijing Laboratory of Biomedical MaterialsCollege of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing100029China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou310027China State Key Laboratory of Medicinal Chemical Biology Key Laboratory of Functional Polymer Materials of Ministry of EducationCollege of ChemistryNankai UniversityTianjin300071China Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province College of Pharmaceutical SciencesZhejiang UniversityHangzhou310058China Jinhua Institute of Zhejiang University Jinhua321299China Zhejiang Key Laboratory of Smart BioMaterials and Center for Bionanoengineering College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027China ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou311215China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Laboratory of Advanced MaterialsFudan UniversityShanghai200438China CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety CAS Center for Excellence in Nano-scienceNational Center for Nanoscience and Technology(NCNST)Beijing100190China School of Biomedical Sciences and Engineering Guangzhou International CampusSouth China University of TechnologyGuangzhou510006China Institute of Functional Nano and So

Biomedical polymers have been extensively developed for promising applications in a lot of biomedical fields, such as therapeutic medicine delivery, disease detection and diagnosis, biosensing, regenerative medicine, and disease treatment. In this review, we summarize the most recent advances in the synthesis and application of biomedical polymers, and discuss the comprehensive understanding of their property-function relationship for corresponding biomedical applications. In particular, a few burgeoning bioactive polymers, such as peptide/biomembrane/microorganism/cell-based biomedical polymers, are also introduced and highlighted as the emerging biomaterials for cancer precision therapy. Furthermore, the foreseeable challenges and outlook of the development of more efficient, healthier and safer biomedical polymers are discussed. We wish this systemic and comprehensive review on highlighting frontier progress of biomedical polymers could inspire and promote new breakthrough in fundamental research and clinical translation.

关键词： biomedical polymer nanomedicine cancer therapy drug delivery bioimaging and biosensing tissue engineering regenerative medicine cytotoxicity biocompatibility

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Preparation of Pva/Cnts Film with High Humidity-Sensitive Performance Based on Multi-Process

SSRN

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SSRN 2024年

作者： Du, Miao Ni, Qingsheng Zhang, Dezhi Shan, Guorong Zheng, Qiang State Key Laboratory of Chemical Engineering College of Chemical and Biological Engineering Zhejiang University Hangzhou310027 China Institute of Zhejiang University-Quzhou Quzhou324000 China Hangzhou Applied Acoustics Research Institute Hangzhou310023 China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou310027 China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan030000 China

PVA (polyvinyl alcohol) is a common water-soluble polymer with a large number of hydroxyl groups on the side chain, which makes it hydrophilic. In this paper, a humidity-sensitive PVA film with high stability and a short equilibrium time was prepared by multimethod integration, i.e., crosslinking, foaming, spin coating and hydroxylated carbon nanotubes (CNTs) addition. The effects of crosslinking structure, pore structure, spin coating speed and CNTs content ( ) on humidity-sensitive performance were investigated in detail. The crosslinking of PVA chains enhances the stability under cyclic test conditions. The addition of a foaming agent can generate a pore structure to increase the water vapor exchange efficiency of the film in contact with the external environment, which improves the humidity response and recovery performance. The spin coating speed significantly influences the pore structure and thickness of the prepared films. CNTs promote the adsorption of water molecules in air through their high specific surface area and facilitate the dissociation of water through hole carriers and hydroxyl groups, which reduces the resistance of PVA/CNTs films and enlarges their humidity response range. The content of CNTs has a significant impact on the humidity-sensitive performance of the film by changing the viscosity of the precursor solution. The matching of spin coating speed and determines the final foaming structure and film thickness. By integrating multiple methods, we obtained a polymer-based humidity-sensitive film with an optimal pore structure and film thickness and, accordingly, outstanding humidity-sensitive performances, i.e., high stability and short response and equilibrium time. © 2024, The Authors. All rights reserved.

关键词： Carbon nanotubes

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