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Tunable Excited State and its Effect on Photoluminescence and Electroluminescence Process in Tetraphenylpyrazine-Modified Anthracene-Based Derivatives

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SSRN 2022年

作者： Luo, Juanjuan Li, Ganggang Lou, Jingli Li, Baoxi Wang, Zhiming Tang, Ben Zhong Guangzhou510640 China MOE Key Laboratory of Macromolecular Synthesis and Functionalization China

Hot-exciton materials have drawn tremendous attention for their promising potential for organic light-emitting diodes (OLEDs). Anthracene (An) had become a popular building block for constructing high-performance blue emitters, but there are some confusions for in-deep understanding their key factors on triplet exciton utilization channels. Herein, TPP-An-based derivatives are systematically synthesized for discussing the effect of their excited state features and energy level distribution on exciton utilization channels in photoluminescence and electroluminescence process. Moderate CT components would be conducive to the transformation from TTA process to hot-exciton process, because its hRISC process has become easier. These results provide a guideline for regulating electroluminescence process for highly efficient OLEDs. © 2022, The Authors. All rights reserved.

关键词： Anthracene

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Inorganic-polymer composite coatings for biomedical devices

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Smart Materials in Medicine 2021年 2卷 1-14页

作者： Li, He-yang Huang, Dan-ni Ren, Ke-feng Ji, Jian MOE Key Laboratory of Macromolecule Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou310027 China

Medical coatings are now playing key roles in the practical use of biomedical devices. By fabricating coatings, the biocompatibility of the devices would be significantly improved, and their biofunctions would be multiplied. Biomedical devices can thus satisfy the clinical requirements to a better extent with the help of coatings. Polymers and inorganic materials are the most used components in the medical coatings, while they both show limitations. By combining polymers and inorganic materials, researchers can fabricate coatings with the advantages of both components. The inorganic-polymer composite coatings would be much more qualified to enhance biocompatibility and bioactivity of the medical devices, showing great potentials in biomedical applications. In this review, we summarize the inorganic-polymer composite biomedical coatings. We introduce metal and metal oxide-based, carbon-based, ceramic-based, and silica-based composite coatings. We illustrate that what materials were used, how they were designed and fabricated into coatings, and what goals the composite coatings realized. © 2020 The Authors

关键词： Composite coatings

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A graphitized expanded graphite cathode for aluminum-ion battery with excellent rate capability

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Journal of Energy Chemistry 2022年第3期31卷 38-44,I0002页

作者： Xiaozhong Dong Hao Chen Haiwen Lai Liyong Wang Jiaqing Wang Wenzhang Fang Chao Gao 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 310027ZhejiangChina Department of Materials Engineering Taiyuan Institute of TechnologyTaiyuan 030008ShanxiChina Hangzhou Gaoxi Technology Co.Ltd. Hangzhou 310000ZhejiangChina Hebei Normal University for Nationalities Chengde 067000HebeiChina

Aluminum-ion battery(AIB)is very promising for its safety and large current charge–***,it is challenging to build a high-performance AIB system based on low-cost materials especially cathode&*** the low-cost expanded graphite-triethylaminehydrochloride(EG-ET)system has been improved in cycle performance,its rate capability still remains a gap with the expensive graphene-alkylimidazoliumchloride AIB *** this work,we treated the cheap EG appropriately through an industrial high-temperature process,employed the obtained EG3K(treated at 3000℃)cathode with AlCl_(3)-ET electrolyte,and built a novel,high-rate capability and double-cheap AIB *** new EG3K-ET system achieved the cathode capacity of average 110 m Ah g^(-1)at 1 A g^(-1)with 18,000cycles,and retained the cathode capacity of 100 m Ah g^(-1)at 5 A g^(-1)with 27,500 cycles(fast charging of 72 s).Impressively,we demonstrated that a battery pack(EG3K-ET system,12 m Ah)had successfully driven the Model car running 100 m *** addition,it was confirmed that the improvement of rate capability in the EG3K-ET system was mainly derived by deposition,and its capacity contribution ratio was about 53.7%.This work further promoted the application potential of the low-cost EG-ET AIB system.

关键词： Aluminum-ion battery Expanded graphite Triethylamine hydrochloride

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synthesis of Well-defined Poly(tetrahydrofuran)-b-Poly(a-amino acid)s via Cationic Ring-opening Polymerization (ROP) of Tetrahydrofuran and Nucleophilic ROP of N-thiocarboxyanhydrides

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Chinese Journal of Polymer Science 2021年第6期39卷 702-708,I0006页

作者： Peng Zhou Xuan-Geng Dai Jie Kong Jun Ling Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi'an 710072China

The synthesis of block copolymers of poly(tetrahydrofuran)-b-poly(α-amino acid)(PTHF-b-PAA)is challenging since it is difficult to combine the two blocks produced via different/conflicting ring-opening polymerization(ROP)*** this contribution,the cationic ROP of THF is catalyzed by rare-earth triflate[RE(OTf)3]and terminated by 2-(t-butyloxycarbonyl-amino)ethanol(BAE).After the deprotection of t-butyloxycarbonyl(Boc)group,the chain end of PTHF is quantitatively changed to amino group which thereafter initiates the nucleophilic ROP ofα-amino acid N-thiocarboxyanhydrides(NTAs).Both polymerizations are well controlled,generating PTHF and PAA segments with designable molecular weights(MWs).PTHF-b-polylysine(PTHF-b-PLys)and PTHF-b-polysarcosine(PTHF-b-PSar)are obtained with MWs between 8.6 and 28.7 kg/*** above amphiphilic diblock copolymers form micelles in ***40-b-PSar32 acts as a surfactant to stabilize oil-in-water *** segments of PTHF-b-PAA are biocompatible and promising in the biomedical application.

关键词： anhydride polymerization carbonyl

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Diphenyl cyclopropenone-centered polymers for site-specific CO-releasing and chain dissociation

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Chinese Chemical Letters 2020年第1期31卷 299-302页

作者： Chenchen Shao Hanyi Duan Yuqin Min Xinghong Zhang MOE Key Laboratory of Macromolecular Synthesis and Functionalization.Department of Polymer Science and Engineering Zhejiang University

The synthesis and stimuli-responsiveness of a diphenyl cyclopropenone(DPCP)-centered poly(methyl acrylate)(PMA)are ***-centered PMA could release carbon monoxide(CO)upon UV light in a switched on-and-off *** CO-releasing process can be reported by the variations in photoluminescence *** addition,DPCP moiety covalently embedded in the crosslinked polyurethane could also release CO under UV *** special,DPCP-centered PMA in solution was selectively dissociated at the phenol ester bond under the ultrasound,and a force-induced hydrolyzation reaction was revealed by D20 exchanging^1 H NMR *** kinetic study reveals that small quantity of water could enhance the chain scission *** work provides a DPCP-centered polymer for sitespecific CO-releasing and chain dissociation.

关键词： Diphenyl cyclopropenone CO-release Chain dissociation Ultrasound UV light

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Implantable Thermal Therapeutic Device with Precise Temperature Control Enabled by Foldable Electronics and Heat-Insulating Pads

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Research 2022年第3期2022卷 297-307页

作者： Min Cai Huang Yang Liyin Shen Shuang Nie Zhengwei Mao Changyou Gao Yang Zhu Jizhou Song Department of Rehabilitation Medicine the First Affiliated Hospital College of MedicineZhejiang UniversityHangzhou 310003China Department of Engineering Mechanics Soft Matter Research Centerand Key Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceZhejiang UniversityHangzhou 310027China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China

Thermal therapy has continued to attract the attention of researchers and clinicians due to its important applications in tumor ablation,wound management,and drug *** lack of precise temperature control capability in traditional thermal treatment may cause the decrease of therapeutic effect and thermal damage to normal ***,we report an implantable thermal therapeutic device(ITTD),which offers precise closed loop heating,in situ temperature monitoring,and thermal *** ITTD features a multifunctional foldable electronics device wrapped on a heat-insulating composite *** and numerical studies reveal the fundamental aspects of the design,fabrication,and operation of the *** vivo experiments of the ITTD in thermal ablation for antitumor demonstrate that the proposed ITTD is capable of controlling the ablation temperature precisely in real time with a precision of at least 0.7℃ and providing effective thermal protection to normal *** proof-of-concept research creates a promising route to develop ITTD with precise temperature control capability,which is highly desired in thermal therapy and other disease diagnosis and treatments.

关键词： composite precise treatment

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Grafting Hyperbranched Polylysine to Polysulfone Porous Membrane: A Promising Route for Modulating Membrane Multi-Properties

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SSRN 2025年

作者： Cui, Ronglu Wang, Chuyao Zhu, Liheng Zhao, Zihao Zhao, Yu Xue, Yunyun Zhu, Ziran Zhu, Baoku Zhejiang University Hangzhou310058 China Center of Healthcare Materials Shaoxing Institute Zhejiang University Shaoxing312000 China MOE Key Laboratory of Macromolecular Synthesis and Functionalization China

Because of the hydrophobic characteristics of the surfaces of bio-ultrafiltration membranes, these membranes exhibit a propensity for the adhesion of contaminants and bacteria during the separation process, which severely impairing both the efficiency and longevity of the membranes. To address this pressing problem, this study introduces hyperbranched polylysine (HBPL) onto the surface of polysulfone ultrafiltration (PSF UF) membranes. This innovative approach significantly enhances the hydrophilicity of the membrane surface while endowing the membrane with robust antibacterial property. The results indicated that the modified UF membrane presented lower BSA adhesion (40.5% of the original PSF membrane), and higher flux recovery (79.6%) compared with the original PSF UF membrane. Additionally, the modified membranes were demonstrated to exhibit effective broad-spectrum antibacterial activity (95.2% against E. coil and 94.8% against S. aureus). Furthermore, the in vitro hemolytic activity assay and cytocompatibility test confirmed their non-toxicity and good biocompatibility. By controlling the surface grafting density of HBPL, a hydrophilic contact-killing surface with hydration repulsion was obtained, achieving synergistic antibacterial and anti-protein adhesion activity. The method of membrane fabrication employed in this study was found to be convenient and low-cost, suggesting its significant potential for application in practical settings. © 2025, The Authors. All rights reserved.

关键词： Grafting (chemical)

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Tissue Engineering in Neuroscience: Applications and Perspectives

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Biomedical Engineering Frontiers 2023年第1期4卷 247-259页

作者： Xiaoge Zhang Fuyao Liu Zhen Gu Liangzhu Laboratory Zhejiang University Medical CenterHangzhou 311121China Zhejiang Provincial Key Laboratory for Advanced Drug Delivery Systems College of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China Department of General Surgery Sir Run Run HospitalSchool of MedicineZhejiang UniversityHangzhou 310016China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang UniversityHangzhou 310027China Jinhua Institute of Zhejiang University Jinhua 321299China

Neurological disorders have always been a threat to human physical and mental health nowadays,which are closely related to the nonregeneration of neurons in the nervous system(NS).The damage to the NS is currently difficult to repair using conventional therapies,such as surgery and ***,repairing the damaged NS has always been a vast challenge in the area of *** engineering(TE),which integrates the cell biology and materials science to reconstruct or repair organs and tissues,has widespread applications in bone,periodontal tissue defects,skin repairs,and corneal ***,tremendous advances have been made in TE regarding *** this review,we summarize TE’s recent progress in neuroscience,including pathological mechanisms of various neurological disorders,the concepts and classification of TE,and the most recent development of TE in ***,we prospect the future directions and unresolved problems of TE in neuroscience.

关键词： organs directions repair

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Non-fused medium bandgap electron acceptors for efficient organic photovoltaics

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Journal of Energy Chemistry 2022年第7期31卷 576-582,I0014页

作者： Tian-Jiao Wen Jiale Xiang Nakul Jain Zhi-Xi Liu Zeng Chen Xinxin Xia Xinhui Lu Haiming Zhu Feng Gao Chang-Zhi Li State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina Department of Physics Chemistry and Biology(IFM) Link?ping UniversityLinköping SE-58183Sweden Department of Chemistry Zhejiang UniversityHangzhou 310027ZhejiangChina Department of Physics The Chinese University of Hong KongNew TerritoriesHong Kong 999077China

The cost-effective organic semiconductors are strongly needed in organic photovoltaics(OPVs). Herein,two medium bandgap(MBG) electron acceptors, TPT4F and TPT4Cl are developed via the new design of multi-noncovalent interaction assisted unfused core, flanked with two electron withdrawing end groups. These fullly non-fused MBG acceptors adapt the planar and rigid conformation in solid, therefore exhibiting the ordered face-on stacking and strong photoluminescence in films. As results, TPT4Cl^(-)based OPVs, upon blending with the PBDB-TF polymer donor, have achieved a power conversion efficiency of 10.16% with a low non-radiative loss of 0.27 e V, representing one of the best fullly non-fused medium bandgap acceptors with desirable cost-efficiency balance.

关键词： Organic photovoltaic Medium bandgap Electron withdrawing unit Non-covalent interaction

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Surface/Interfacial design and tailoring of polymeric membranes for liquid-phase separation

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2021年第2期22卷 85-93页

作者： Jia-qi LI Chuan-jie FANG Wei-lin FENG Jin-chao FANG Li-ping ZHU MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

Synthetic polymer membranes are widely used in many applications,including,among others,water purification,protein separation,and ***,the use of existing polymer membranes faces major challenges,such as the trade-off between permeability and selectivity,membrane fouling,and poor mechanical *** address these problems the authors have focused their research on surface/interfacial tailoring and the structure-property relationship of polymer membranes used in liquid separation *** has been made as follows:(1)a methodology for membrane surface functionalization and nanofiltration(NF)membrane preparation based on mussel-inspired catecholic chemistry was proposed and established;(2)a class of mechanically robust and environmentally-responsive composite membranes with hydrogel pore-filled in rigid macroporous supports was designed and developed;(3)a methodology for surface tailoring and antifouling modification of polymer membranes based on amphiphilic copolymers was created and the scientific implications for amphiphilic polymer membranes elaborated;(4)an adsorption membrane with both filtration and adsorption functions was designed and developed to achieve rapid removal of trace micropollutants,including heavy metal ions,organic dyes,plasticizer,antibiotics,and *** mini-review briefly summarizes this work.

关键词： Separation membranes Amphiphilic copolymer Catecholic chemistry Antifouling Adsorption membranes

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