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Near-infrared organic photosensitizers with aggregation-induced emission and switchable fluorescence for fungal infection therapy

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Science China Chemistry 2025年

作者： Xinzhe Yang Zixuan Huang Keke ding Huili Yang Lirong Wang Qing Xia Rong Hu Guang shi Bingjia Xu Anjun Qin School of Chemistry South China Normal University State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates Center for Aggregation-Induced Emission AIE Institute South China University of Technology Department of Urology The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College) School of Chemistry and Chemical Engineering University of South China

The development of near-infrared (NIR) photosensitizers with aggregation-induced emission (AIE) properties,switchable luminescence colors,and satisfactory photodynamic therapy (PDT) effects on the treatment of fungal infection is of great importance but very ***,two ionic organic luminogens are constructed by employing diphenylamine,diphenylacrylonitrile/1,2-diphenylethene,and methylated quinoline cation as building *** is found that the resulting compounds TCQF and TQF show apparent AIE properties and produce intense fluorescence with high photoluminescence quantum yields of up to 31.2%in the solid *** the meantime,their emission colors can be switched between red and NIR and in the NIR region by mechanical force and solvent vapor,respectively,thereby enabling remarkable and reversible mechanochromism with emission variations of up to 104 *** excitingly,TCQF and TQF can efficiently generate ROS under the illumination of white light and show excellent antimicrobial activities and satisfactory PDT *** by the unique anti-fungus properties,TCQF is employed as a biocompatible NIR photosensitizer for treating wound infection with ***,and apparent PDT effects are *** work provides a new direction for the development of multifunctional NIR materials with AIE properties.

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miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

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Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng Cong jing-jing Hu Yan Yu Xiao-Li Li Xiao-Ting Sun Li-Ting Wang Xia Wu Ling-Jie Zhu Xiao-Jia Yang Qian-Ru He Fei ding Hai-Yan shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

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Boosting aqueous nickel-zinc battery stability with bimetallic ion-integrated 1D metal-organic nanowires

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Science China Chemistry 2025年

作者： Yihao Chen jin Liang Yichun Su Guoyin Zhu Hengyue Xu Hongye ding Guangxun Zhang Dianheng Yu Zizhou Shen Yizhou Zhang Wei Huang Huan Pang School of Chemistry and Chemical Engineering Yangzhou University Key Laboratory of Flexible Electronics (KLoFE) & Institute of Advanced Materials (IAM) School of Flexible Electronics (Future Technologies) Nanjing Tech University (NanjingTech) Institute of Advanced Materials and Flexible Electronics (IAMFE) School of Chemistry and Materials Science Nanjing University of Information Science & Technology Department of Chemistry Tsinghua University State Key Laboratory of Coordination Chemistry Nanjing University

Limited by low conductivity,designing cathode materials with excellent electron transfer efficiency for high-performance nickel-zinc batteries （NZBs） remains *** this study,a series of bimetallic metal-organic nanowires were fabricated by doping M ions in NiNTA,resulting in NiMNTA (M=Mg2+,Mn2+,Co2+,Zn2+,Ag+),and NixCo6-xNTA （x=1,2,3,4,5）.The proportions and types of metal ions can be modified without altering the initial coordination structure.X-ray absorption fine structure spectroscopy （XAFS） revealed that only M–O bonds,not metal bonds,were present in the *** performance of Ni2Co4NTA as the cathode for aqueous NZBs was significantly improved,achieving the maximum energy density of 279.17Wh kg-1with the high cycle stability （retention rate of 72.0%after 1,000 cycles）.The flexible Ni2Co4NTA//Zn@carbon cloth battery employing gel electrolyte also exhibits the excellent Coulombic efficiency of 96%after 350 *** approach shows considerable potential for designing one-dimensional materials with bimetallic modifications,providing new strategies for developing cathode materials for NZBs with high specific capacity and cycle stability.

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SnO高压结构稳定性和电学性能研究

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光谱学与光谱分析 2025年第1期45卷 82-87页

作者：刘涛黄宇轩高金金王世霞上海理工大学材料与化学学院上海200093

近年来氧化亚锡(SnO)在光、电等方面的应用日益广泛,为了拓宽SnO的应用范围,采用拉曼光谱原位测试和第一性原理计算对高压条件下SnO的结构性能和电子性质进行研究。SnO表征结果:扫描电子显微镜结果显示,所选取SnO样品为具有横向尺寸的... 详细信息

近年来氧化亚锡(SnO)在光、电等方面的应用日益广泛,为了拓宽SnO的应用范围,采用拉曼光谱原位测试和第一性原理计算对高压条件下SnO的结构性能和电子性质进行研究。SnO表征结果:扫描电子显微镜结果显示,所选取SnO样品为具有横向尺寸的片状堆叠,整体呈花状;X射线衍射图谱表明,SnO样品在常温常压下晶体结构为四方晶系结构(空间群P4/nmm)。采用Mao-Bell型金刚石压腔结合原位拉曼光谱探究了SnO样品在高压下的结构性能变化,结果显示:SnO在常压有四种拉曼振动模式(A_(1g)、B_(1g)、E_(1g)和E_(2g)),分别位于211、350、113和460 cm^(-1)波数附近,其中113和211 cm^(-1)为SnO拉曼特征峰。随SnO样品体系加压至12.5 GPa,压力使Sn分子间和原子间距不断减小,导致Sn-O键长缩短,当原子发生伸缩振动时,缩短的键长使得键能增大,因此活性拉曼振动模(E_(1g)和A_(1g))均向高频方向移动;随着体系压力的继续增大,晶格发生畸变进而使得非弹性散射强度降低,峰型宽化;当加压至8 GPa时,125和216 cm^(-1)附近振动模峰急剧减小;加压至10 GPa时两个特征峰完全消失,在非静水压环境下8~10 GPa时该物质发生了非晶化;当体系加压至12.5 GPa时,谱图中仍未出现新峰,表明高压下非晶化状态稳定。随后体系进行卸压,卸压至3 GPa后SnO的E_(1g)和A_(1g)模重新出现表明样品恢复低压下的晶体结构,卸至常压特征峰强度明显分别为110和209 cm^(-1)处与加压前吻合,证明了SnO高压相变行为具有可逆性。为进一步了解压力对SnO电学性能影响,使用第一性原理方法计算了SnO在常压和实验非晶化压力(8 GPa)下的电子性质,通过非晶化前后SnO的带隙宽度变化,探究压力对SnO导电性能的影响。结果显示,在常压下SnO为具有0.43 eV带隙的间接带隙半导体,在费米能级附近态密度没有发生重叠,8 GPa时SnO显示金属性质,由于SnO O-p、Sn-s和Sn-p轨道的态密度在费米能级处重叠,导致带隙的闭合,材料发生金属化。研究结果表明SnO高压下可能产生非晶化及压力所导致的非晶化行为可逆,同时高压导致SnO发生半导体到金属的转变,拓展了SnO高压结构和电学性质的探究,为SnO高压下的应用提供进一步帮助。

关键词： SnO 拉曼光谱金刚石压腔第一性原理电子性质

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鱼菜共生技术及其系统装备的研究现状与展望

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南京农业大学学报 2025年第1期48卷 85-96页

作者：李天沛汪小旵施印炎丁为民南京农业大学工学院江苏南京210031 江苏省现代设施农业技术与装备工程实验室江苏南京210031

中国淡水养殖产量稳居世界第一位,但过量投饲和养殖模式落后带来的水体富营养化、生产效率低下以及水产品质量无法得到保障等问题严重制约了水产养殖业的健康发展,因此发展鱼菜共生等生态种养模式是加快发展生态循环农业并最终实现农业... 详细信息

中国淡水养殖产量稳居世界第一位,但过量投饲和养殖模式落后带来的水体富营养化、生产效率低下以及水产品质量无法得到保障等问题严重制约了水产养殖业的健康发展,因此发展鱼菜共生等生态种养模式是加快发展生态循环农业并最终实现农业绿色可持续发展的重要途径。鱼菜共生技术可实现氮素和水资源的高利用率,生产农产品的同时生态效益也很显著。鱼菜共生系统包含水产养殖、养殖尾水预处理、微生物降解转化、作物栽培等农艺环节,涉及多种农业生产过程和装备。本文总结了国内外现代鱼菜共生技术的发展现状,介绍了鱼菜共生系统的装备组成和模式特点,分析了鱼菜共生技术及其装备存在的问题和挑战,提出鱼菜共生技术未来发展趋势与建议。

关键词：鱼菜共生种养装备水产养殖无土栽培尾水处理氮素循环

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Anisotropic transport properties and topological Hall effect in the annealed kagome antiferromagnet FeGe

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Science China(Physics,Mechanics & Astronomy) 2025年

作者： Jiajun Ma Chenfei shi Yantao Cao Yuwei Zhang Yazhou Li Jiaxing Liao Jialu Wang Wenhe Jiao Hanjie Guo Chenchao Xu shixun Cao Jianhui Dai jin-Ke Bao Yuke Li School of Physics Hangzhou Key Laboratory of Quantum Matters Hangzhou Normal University Department of Physics Materials Genome Institute and International Center for Quantum and Molecular StructuresShanghai University Songshan Lake Materials Laboratory School of Physical Science and Technology Lanzhou University Key Laboratory of Quantum Precision Measurement of Zhejiang Province Department of Applied PhysicsZhejiang University of Technology

Electron correlation often gives birth to various orders in quantum materials. Recently, a strongly correlated kagome antiferromagnet FeGe is discovered to undergo a charge density wave transition inside the A-type antiferromagnetic state, providing an opportunity to explore the interplay between charge order and magnetism. Here, we reported the observation of anisotropic resistivity and Hall effect, along with a topological Hall effect, in the annealed FeGe crystals. As the current flows along the abplane, the temperature dependence of ρabexhibits a distinct resistivity loop related to a first-order transition at Tcdw. The applied magnetic fields do not alter Tcdwbut can induce a spin-flop transition at Hsf. Consequently, a field-induced large topological Hall effect is observed in the canting antiferromagnetic（CAFM） state below Tcant, which is possibly attributed to the non-trivial spin texture during the spin-flop process. Whereas, as current is parallel to c-axis, both the field-induced transitions in ρcand χcdisappear. Instead, the Hall resistivity in the annealed FeGe significantly exhibits a deviation from the linear *** findings provide valuable insight into revealing the interplay among magnetism, charge order and topology in the kagome magnets.

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Structure of Micro-nano WC-10Co4Cr Coating and Cavitation Erosion Resistance in NaCl Solution

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Chinese Journal of Mechanical Engineering 2017年第5期30卷 1239-1247页

作者： Xiang ding Xu-Dong Cheng Cheng-Qing Yuan jin shi Zhang-Xiong ding State Key Laboratory of Advanced Technology for Materials and Processing Wuhan University of Technology School of Energy and Power Engineering Wuhan University of Technology

Cavitation erosion （CE） is the predominant cause for the failure of overflow components in fluid machinery. Advanced coatings have provided an effective solution to cavitation erosion due to the rapid development of surface engineering techniques. However, the influence of coating structures on CE resistance has not been sys- tematically studied. To better understand their relationship, micro-nano and conventional WC-10Co4Cr cermet coat- ings are deposited by high velocity oxygen fuel spray- ing（HVOF）, and their microstructures are analyzed by OM, SEM and XRD. Meanwhile, characterizations of mechan- ical and electrochemical properties of the coatings are carried out, as well as the coatings＇ resistance to CE in 3.5 wt % NaC1 solution, and the cavitation mechanisms are explored. Results show that micro-nano WC-10Co4Cr coating possesses dense microstructure, excellent mechanical and electrochemical properties, with very low porosity of 0.26 4-0.07% and extraordinary fracture toughness of 5.58 4-0.51 MPa.m1/2. Moreover, the CE resistance of micro-nano coating is enhanced above 50% than conventional coating at the steady CE period in 3.5 wt % NaC1 solution. The superior CE resistance of micro- nano WC-10Co4Cr coating may originate from the unique micro-nano structure and properties, which can effectively obstruct the formation and propagation of CE crack. Thus,a new method is proposed to enhance the CE resistance of WC-10Co4Cr coating by manipulating the microstructure.

关键词： Cavitation erosion resistance Micro-nanostructure - WC- 10Co4Cr coating HVOF

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Curcumin Reduces Cardiac Fibrosis by Inhibiting Myofibroblast Differentiation and Decreasing Transforming Growth Factor β1 and Matrix Metalloproteinase 9/Tissue Inhibitor of Metalloproteinase 1

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Chinese Journal of Integrative Medicine 2017年第5期23卷 362-369页

作者： MA jin MA shi-yu ding Chun-hua Cardiac Electrophysiology Research Lab Guangdong Provincial Academy of Chinese Medical Sciences Guangzhou 510006 China Department of Critical Care Medicine Guangdong Provincial Hospital of Chinese Medicine Guangzhou 510006 China Arrhythmia Center Guangdong Provincial Hospital of Chinese Medicine Guangzhou 510006 China

Objective： To study the effect of curcumin on fibroblasts in rats with cardiac fibrosis. Methods： The rats were randomly divided into 4 groups（n=12 in each group）： the normal control, isoproterenol（ISO）, ISO combined with low-dose curcumin（ISO＋Cur-L）, and ISO combined with high-dose curcumin（ISO＋Cur-H） groups. ISO＋Cur-L and ISO＋Cur-H groups were treated with curcumin（150 or 300 mg·kg-1·day-1） for 28 days. The primary culture of rat cardiac fibroblast was processed by trypsin digestion method in vitro. The 3rd to 5th generation were used for experiment. Western blot method was used to test the expression of collagen type Ⅰ/Ⅲ, α-smooth muscle actin（α-SMA）, transforming growth factor（TGF）-β1, matrix metalloproteinase（MMP）-9 and tissue inhibitor of metalloproteinase（TIMP）-1. 3-（4,5-Dimethylthiazol-2-yl）-2,5-diphenyltetr-azolium bromide（MTT） assay was applied to test the proliferation of fibroblast. Result： Curcumin significantly decreased interstitial and perivascular myocardial collagen deposition and cardiac weight index with reducing protein expression of collagen type Ⅰ/Ⅲ in hearts（P〈0.05）. In addition, curcumin directly inhibited angiotensin（Ang） Ⅱ-induced fibroblast proliferation and collagen type Ⅰ/Ⅲ expression in cardiac fibroblasts（P〈0.05）. Curcumin also inhibited fibrosis by inhibiting myofibroblast differentiation, decreased TGF-β1, MMP-9 and TIMP-1 expression（P〈0.05） but had no effects on Smad3 in Ang Ⅱ incubated cardiac fibroblasts. Conclusions： Curcumin reduces cardiac fibrosis in rats and Ang Ⅱ-induced fibroblast proliferation by inhibiting myofibroblast differentiation, decreasing collagen synthesis and accelerating collagen degradation through reduction of TGF-β1, MMPs/TIMPs. The present findings also provided novel insights into the role of curcumin as an anti-fibrotic agent for the treatment of cardiac fibrosis.

关键词： curcumin fibrosis myofibroblast transforming growth factor matrix metalloproteinase

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Fast Compass Alignment for Strapdown Inertial Navigation System

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Computers, Materials & Continua 2020年第11期65卷 1349-1360页

作者： jin Sun Dengyin Zhang Xiaoye shi Fei ding School of Internet of Things Nanjing University of Posts and TelecommunicationNanjing21003China Department of Electronic and Electrical Engineering University College LondonLondonWC1E 6BTUK

Initial alignment is the precondition for strapdown inertial navigation system(SINS)to *** two important indexes are accuracy and rapidity,the accuracy of the initial alignment is directly related to the working accuracy of SINS,but in self-alignment,the two indexes are often *** view of the limitations of conventional data processing algorithms,a novel method of compass alignment based on stored data and repeated navigation calculation for SINS is *** means of data storage,the same data is used in different stages of the initial alignment,which is beneficial to shorten the initial alignment time and improve the alignment *** order to verify the correctness of the compass algorithm based on stored data and repeated navigation calculation,the simulation experiment was *** summary,when the computer performance is sufficiently high,the compass alignment method based on the stored data and the forward and reverse navigation calculation can effectively improve the alignment speed and improve the alignment accuracy.

关键词： Strapdown Inertial Navigation System(SINS) compass alignment data storage reverse navigation calculation forward navigation calculation

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3D打印技术在食品中的研究进展

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南京农业大学学报 2025年第1期48卷 70-84页

作者：丁可盈金晶任玉金鹏郑永华吴正国南京农业大学食品科学技术学院江苏南京210095

3D打印技术是一种新兴的制造技术,其可以利用数字模型实现精准制造。近年来,3D打印技术已经被广泛应用于各个领域,包括食品、生物医药等。3D食品打印的优势在于能够制作复杂的食品模型、设计独特的图案以及精准定制。3D食品打印技术由... 详细信息

3D打印技术是一种新兴的制造技术,其可以利用数字模型实现精准制造。近年来,3D打印技术已经被广泛应用于各个领域,包括食品、生物医药等。3D食品打印的优势在于能够制作复杂的食品模型、设计独特的图案以及精准定制。3D食品打印技术由挤出式打印、黏结剂喷射和喷墨打印组成,其利用食品材料,基于逐层堆积的方式设计造型。本文重点介绍了3D打印技术在食品中的最新研究进展,深入总结了3D打印技术在不同类型食品应用中的特点和局限性。同时,通过介绍食品的精准营养递送、贮藏保鲜、食品加工、生物制造等方面,详细分析了3D打印在食品行业的应用现状。最后展望了未来食品3D打印技术的发展,以期为3D打印与食品产业的深度融合提供理论指导。

关键词： 3D打印食品加工精准营养食品包装

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