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Eco-friendly multifunctional CeO 2 /ZnMn 2 O 4 heterojunction with robust photocatalysis for rapid bacteria-killing and highly effective eradication of formaldehyde simultaneously

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Journal of Environmental Chemical Engineering 2025年第3期13卷

作者： Caihui Huang Congyang Mao Shuilin Wu Yajun Liu Dafu Chen Chaofeng Wang Khin Wee Lai Yufeng Zheng Hanpeng Liu Zhaoyang Li Shengli Zhu Hui Jiang Zhenduo Cui Xiangmei Liu School of Materials Science & Engineering Biomedical Materials Engineering Research Center Hubei Key Laboratory of Polymer Materials Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials State Key Laboratory of Biocatalysis and Enzyme Engineering Hubei University Wuhan 430062 China School of Materials Science & Engineering Peking University Beijing 100871 China Department of Spine Surgery Beijing Jishuitan Hospital Capital Medical University No.31 Xinjiekou Xicheng District Beijing 100035 PR China Laboratory of Bone Tissue Engineering Beijing Research Institute of Traumatology and Orthopaedics Beijing Jishuitan Hospital Capital Medical University No.31 Xinjiekou Xicheng District Beijing 100035 PR China School of Health Science & Biomedical Engineering Hebei University of Technology Tianjin 300401 China Department of Biomedical Engineering Faculty of Engineering Universiti Malaya Kuala Lumpur 57000 Malaysia School of Materials Science & Engineering the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China Tianjin University Tianjin 300072 China

Pathogenic infections and volatile organic compounds (VOCs) with low concentration but high toxicity imperil heavily the health of people. Herein, we developed a green and eco-friendly photocatalytic multifunctional material of CeO 2 /ZnMn 2 O 4 by in-situ hydrothermal growth of ZnMn 2 O 4 on CeO 2 , which can not only kill bacteria rapidly but also eradicate formaldehyde effectively. In vitro antibacterial test disclosed that after 35 min of irradiation with 300 W xenon lamp, CeO 2 /ZnMn 2 O 4 composite can kill 99.85 % Staphylococcus aureus ( S. aureus ) and 97.84 % Escherichia coli ( E. coli ). Meanwhile, the synthesized CeO 2 /ZnMn 2 O 4 composite can degrade 91.35 % formaldehyde within 60 min under simulated light irradiation (0.1 W/cm 2 ). The underlying mechanism stems from the heterojunction interface formed between CeO 2 and ZnMn 2 O 4 , which accelerates the transfer and separation of photo-excited electron-hole pairs, thereby enhancing reactive oxygen species (ROS) generation. Driven by the heterojunction's synergistic photothermal-oxidative mechanisms, the generated ROS disrupt bacterial membranes via oxidative damage, achieving effective bactericidal efficacy. Simultaneously under light activation, formaldehyde adsorbed on the composite surface undergoes ROS-mediated mineralization, converting this toxic pollutant into innocuous byproducts such as CO 2 and H 2 O.

关键词： Escherichia coli

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Aggregation-Induced Emission-Based Ionic Liquids for Bacterial Killing, Imaging, Cell Labelling and Bacterial Detection in Blood Cells

SSRN

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SSRN 2019年

作者： Shi, Jie Wang, Mengyao Sun, Zhe Liu, Yangyang Guo, Jiangna Mao, Hailei Yan, Feng Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application Department of Polymer Science and Engineering College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou215123 China Department of Anesthesiology and Critical Care Medicine Zhongshan Hospital Fudan University Shanghai200032 China

A series of aggregation-induced emission (AIE)-based imidazolium type ionic liquids (ILs) were designed and synthesized for bacterial killing and imaging, cell labelling and bacterial detection in blood cells. The AIE-based ILs showed antibacterial activities against both E. coli and S. aureus. The carbon chain length of substitution at the N3 position of the imidazolium cations highly affect the antibacterial properties of ILs. Due to their AIE characteristics, the ILs could selectively fluorescent image dead bacteria while killing the bacteria. The fluorescence intensity varied with the concentration of bacteria, indicating that the AIE-based ILs would be an excellent antibacterial material as well as an efficient probe for bacterial viability assay. In addition, the synthesized AIE-based ILs exhibit relatively low cytotoxicity and hemolysis rate, and therefore potential for cell labelling, as well as bacterial detection in blood cells. © 2019, The Authors. All rights reserved.

关键词： Ionic liquids

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Precise Molecular Weight Determination and Structure Characterization of End-functionalized polymers:An NMR Approach via Combination of One-dimensional and Two-dimensional Techniques

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Chinese Journal of polymer Science 2017年第5期35卷 681-692页

作者： dong-xue chen ling-feng gao 李晓虹屠迎锋 Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationState and Local Joint Engineering Laboratory for Novel Functional Polymeric MaterialsCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China

We present here the application of one-dimensional and two-dimensional NMR techniques to characterize the structure of methoxyl end-functionalized polystyrenes （PS）. The peaks in 1H-NMR spectra corresponding to main-chain, side-chain and chain-end groups are assigned by 1H-1H gCOSY, 1H-13C gHSQC and gHMBC spectra. For the first time, the spin-lattice relaxation time （T1） of protons of the chain-ends is revealed to be affected more by polymer molecular weight （MW） than by the protons of the main-chains and the side-chains （almost independent from MW）. As a result, a much higher delay time （dl） for chain-ends （d1〉 20T1） is needed for quantitative NMR measurement when using end-group estimation method to obtain the MW of PS, which is in accordance with the value estimated by GPC. An improved method for the polymer MW determination is established, by combination of different NMR techniques to distinguish the peaks, and a large dl setting to achieve quantitative NMR analysis.

关键词： NMR spectroscopy Molecular weight determination Quantitative NMR analysis 2D NMR

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Effect of Sequence Structure on Wetting Behaviors of Fluorinated Methacrylate polymers Based on Perfluorohexylethyl Methacrylate and Stearyl Acrylate

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Chinese Journal of polymer Science 2017年第9期35卷 1061-1072页

作者： zi-xu gu jun cheng ming-zu zhang jin-lin he 倪沛红 College of Chemistry Chemical Engineering and Materials Science State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis Soochow University Suzhou 215123 China

Due to the non-crystalline properties of short chain perfluoroalkyl groups, using short chain perfluoroalkyl to stabilize low surface free energy polymers has been a challenging task. In this study, we prepare a series of random copolymers poly（perfluorohexylethyl methacrylate）-co-poly（stearyl acrylate）（P13FMA-co-PSA） and block copolymers poly（perfluorohexylethyl methacrylate）-b-poly（stearyl acrylate）（P13FMA-b-PSA）, and systematically investigate the effects of the sequence structure and the content of 13FMA of the fluorinated copolymers on surface free energy and surface reorganization. Static/dynamic contact angle goniometry and water/oil repellency analyses demonstrate that the random polymer P13FMA-co-PSA could not achieve low surface free energy and low surface reorganization at the same time. In contrast, for the block copolymer P13FMA-b-PSA, both low surface free energy and low surface reorganization are acquired simultaneously. The results of X-ray photoelectron spectroscopy （XPS）, dynamic contact angle goniometry and differential scanning calorimetry （DSC） reveal the above-mentioned properties. The consecutive 13FMA segments improve the surface fluorine density, while the consecutive SA chains enhance the crystallinity of the SA segments, and further hinder the surface reorganization of the perfluoroalkyl groups. Therefore, P13FMA-b-PSA exhibits a higher utilization efficiency of fluorine atoms and a better structural stability than P13FMA-co-PSA.

关键词： Surface free energy Surface reorganization Perfluorohexylethyl methacrylate （13FMA） Stearyl acrylate （SA） Water/oil repellency

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Synthesis of Cyclic Oligo(ethylene adipate)s and Their Melt polymerization to Poly(ethylene adipate)

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Chinese Journal of polymer Science 2017年第9期35卷 1051-1060页

作者： min lu xiang zhu xiao-hong li xiao-ming yang 屠迎锋 Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 China

We present here the first synthesis of cyclic oligo（ethylene adipate）s （COEAs） via pseudo-high dilution condensation reaction of adipoyl chloride with ethylene glycol, and the synthesis of corresponding poly（ethylene adipate）（PEA） via the melt polymerization of COEAs. The structure of COEAs was characterized and proved by 1H-NMR and MALDI-TOF mass measurements. The effects of organic base, reaction temperature and the ratio of adipoyl chloride to ethylene glycol on the yield of COEAs were studied, and the optimum reaction condition was revealed. PEA, a diacid and diol based semi-crystalline green aliphatic polyester, was synthesized by the melt polymerization of COEAs using Ti（n-C4H90）4 as catalyst and 1,10-decanediol as initiator at 200 ℃, which follows the polycondensation-coupling ring- opening polymerization method. Our strategy should be applicable to the synthesis of versatile aliphatic polyesters based on diacid and diol monomers, which have potential applications as biocompatible and biodegradable materials.

关键词： Cyclic oligoesters Pseudo-high dilution reaction condition Polycondensation-coupling ring-openingpolymerization Aliphatic polyesters

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Recent Advances of CuAAC Click Reaction in Building Cyclic polymer

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Chinese Journal of polymer Science 2017年第3期35卷 317-341页

作者： zhi-hao huang yan-yan zhou zi-mu wang ying li wei zhang nian-chen zhou 张正彪朱秀林 State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 China

Cyclic polymers have attracted more and more attentions in recent years because of their unique topological structures and characteristic properties in both solution and bulk state. There are relatively few reports on cyclic polymers, partly because of the more demanding synthetic procedures. In recent years, 'click' reaction, especially Cu(I)-catalyzed azide-alkyne cycloaddition(CuAAC), has been widely utilized in the synthesis of cyclic polymer materials because of its high efficiency and low susceptibility to side reactions. In this review, we will focus on three aspects:(1) Constructions of monocyclic polymer using CuAAC 'click' chemistry;(2) Formation of complex cyclic polymer topologies through CuAAC reactions;(3) Using CuAAC 'click' reaction in the precise synthesis of molecularly defined macrocycles. We believe that the CuAAC click reaction is playing an important role in the design and synthesis of functional cyclic polymers.

关键词： Cu(I)-catalyzed azide-alkyne cycloaddition(CuAAC) 'Click' chemistry Cyclic polymer Reversible deactivation radical polymerization(RDRP) Atom transfer radical polymerization(ATRP) Reversible addition fragmentation chain transfer polymerization(RAFT)

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design and intelligent colour regulation of luminescent silk chemically bonded with Eu(III) and Eu(III)/Tb(III)

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COLORATION TECHNOLOGY 2018年第5期134卷 373-380页

作者： Xiao, Xingfang Ren, Lipei Zhang, Yawei Zhang, Qian Zhao, Sanping Liu, Ruina Xu, Weilin College of Material Science and Engineering Wuhan Institute of Technology Wuhan China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education Hubei Key Laboratory of Polymer Materials School of Materials Science and Engineering Hubei University Wuhan China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China

design and successful synthesis of a series of novel luminescent silk chemically modified with europium(III) [Eu(III)] and europium(III)/terbium(III) [Eu(III)/Tb(III)] is reported. The modified silk specimens were characterised by infrared spectroscopy, fluorescence spectroscopy, scanning electron microscopy, and evaluated for their colour fastness. The rare earth ions were linked to the silk fibre via chemical bonds with the aid of tetracarboxylic acids used as the bridging ligands. Therefore, the modified silk had excellent luminescent stability and colour fastness to water and sunlight. Based on the blue fluorescence of silk along with the red and green luminescence of Eu(III) and Tb(III), respectively, under ultraviolet irradiation intelligent colour regulation was easily achieved by adjusting either the amount of Eu(III) or the ratio of Eu(III)/Tb(III). The Commission International de l'Eclairage chromaticity co-ordinates calculated from the emission spectra also confirm the colour changes. Benefiting from the tunable colour and high stability, the modified silk could be an excellent candidate for applications in anti-counterfeiting and flexible tunable light- emitting materials.

关键词： silks Silk rare earth ion carburizing Color emission spectrum Remainder of a Series Textiles-Color fastness Sunlight chemical bond resin bonding Telescoping a series

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Ag2[email protected]2Heterostructure for Rapid Bacteria-Killing Using Near-Infrared Light

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ACS Sustainable Chemistry & Engineering 2019年第17期7卷 14982-14990页

作者： Yunfan Lin Donglin Han Yuan Li Lei Tan Xiangmei Liu Zhenduo Cui Xianjin Yang Zhaoyang Li Yanqin Liang Shengli Zhu Shuilin Wu Hubei Key Laboratory of Polymer Materials Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials School of Materials Science & Engineering Hubei University NO. 368 Youyi Avenue Wuchang District Wuhan 430062 China School of Materials Science & Engineering The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China Tianjin University NO. 91 Weijin Road Nankai District Tianjin 300072 China

On a global scale, bacterial infection has become a huge threat to human health. Taking into consideration the increasing drug-resistance bacteria, it is urgent to develop novel nonantibiotics strategies to kill bacteria rapidly. Herein, Ag2[email protected]2was developed as a new kind of antibacterial agent, where exfoliated WS2nanosheets were decorated with Ag2S nanoparticles through in situ growth. Under near-infrared (NIR) light irradiation (808 nm), the tight contact between Ag2S and WS2endowed the composite with outstanding photocatalytic property, which was attributed to effective separation of photoactivated electronics and holes. Because of the synergistic effect of photocatalytic and photothermal properties, highly effective antibacterial efficacy could be achieved for Ag2[email protected]2within 20 min NIR light irradiation, that is, 99.93% towardStaphylococcus aureusand 99.84% towardEscherichia coli. Moreover, the in vitro cell culture test showed that the synthesized Ag2[email protected]2was noncytotoxic. These results demonstrate that Ag2[email protected]2can be a promising material for rapid and highly effective disinfection under NIR irradiation.

关键词： Composites Bacteria Two dimensional materials Infrared light Irradiation

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Biodegradable polymersomes with Structure Inherent Fluorescence and Targeting Capacity for Enhanced Photo-Dynamic Therapy

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Angewandte Chemie 2021年第32期133卷

作者： Dr. Shoupeng Cao Yifeng Xia Dr. Jingxin Shao Beibei Guo Yangyang Dong Dr. Imke A. B. Pijpers Prof. Dr. Zhiyuan Zhong Prof. Dr. Fenghua Meng Dr. Loai K. E. A. Abdelmohsen Dr. David S. Williams Prof. Dr. Jan C. M. van Hest Bio-Organic Chemistry Institute for Complex Molecular Systems Eindhoven University of Technology P.O. Box 513 (STO 3.41) 5600 MB Eindhoven The Netherlands Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 P. R. China School of Cellular and Molecular Medicine University of Bristol Bristol UK

Biodegradable nanostructures displaying aggregation-induced emission (AIE) are desirable from a biomedical point of view, due to the advantageous features of loading capacity, emission brightness, and fluorescence stability. Herein, biodegradable polymers comprising poly (ethylene glycol)-block-poly(caprolactone-gradient-trimethylene carbonate) (PEG-P(CLgTMC)), with tetraphenylethylene pyridinium-TMC (PAIE) side chains have been developed, which self-assembled into well-defined polymersomes. The resultant AIEgenic polymersomes are intrinsically fluorescent delivery vehicles. The presence of the pyridinium moiety endows the polymersomes with mitochondrial targeting ability, which improves the efficiency of co-encapsulated photosensitizers and improves therapeutic index against cancer cells both in vitro and in vivo. This contribution showcases the ability to engineer AIEgenic polymersomes with structure inherent fluorescence and targeting capacity for enhanced photodynamic therapy.

关键词： aggregation-induced emission biodegradable polymersomes mitochondria targeting photo-dynamic therapy polycarbonates

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Polylipopeptide-based multifunctional nanomedicines for targeted cancer delivery

Polylipopeptide-based multifunctional nanomedicines for targ...

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The 3rd International Conference on Nanomedicine of China（ChinaNanomedicine 2018）

作者： Chao Deng Min Qiu Jian Zhang Huanli Sun Fenghua Meng Ru Cheng Zhiyuan Zhong Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of ChemistryChemical Engineering and Materials ScienceSoochow University

Poly(ethylene glycol)-b-polypeptide copolymers with excellent safety,are one of the most clinically studied materials for anticancer drug delivery[1].For example,paclitaxel(PTX),doxorubicin(Dox),and cisplatin-loaded polypeptidebased nanotherapeutics have proceeded into phase Ⅱ and Ⅲ clinical trials,and achieved enhanced therapeutic efficacy against intractable tumors and reduced side effects in comparison with free *** should be noted,however,that these nanoformulations,mostly based on hydrophilic polypeptides,usually involve multistep synthesis,including protection and deprotection of functional groups and drug *** based on hydrophobic polypeptide often plagued with low drug loading and insufficient in vivo *** this end,we designed and prepared a series of poly(a-aminopalmitic acid)-based nanoplatforms,including micelles and polymersomes for targeted delivery of small anti-cancer drugs,protein,and siRNA[2-3].

关键词： Polylipopeptide-based multifunctional nanomedicines for targeted cancer delivery

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