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Anisotropic Plasmon Resonance Enables Spatially Controlled Photothermal and Photochemical Effects in Hot Carrier-Driven Catalysis

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Chinese Journal of Chemistry 2024年第16期42卷 1877-1885页

作者： Jiaqi Wang Zhijie Zhu Kai Feng Shuang Liu Yuxuan Zhou Ifra Urooj Jiari He Zhiyi Wu Jiahui Shen Xu Hu Zhijie chen Xudong Dong Manzar Sohail Yanyun Ma jinxing chen Chaoran Li Xingda An Le He Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhouJiangsu 215123China Jiangsu Key Laboratory ofAdvanced Negative Carbon Technologies Soochow UniversitySuzhouJiangsu 215123China Jiangsu Key Laboratory for Carbon-Based Functional Materials&Devices Soochow UniversitySuzhouJiangsu 215123China Department of Chemistry School of Natural SciencesNational University of Sciences and TechnologyIslamabad 44000Pakistan

Localized surface plasmon resonance has been demonstrated to provide effective photophysical enhancement mechanisms in plasmonic ***,it remains highly challenging for distinct mechanisms to function in synergy for a collective gain in catalysis due to the lack of spatiotemporal control of their ***,the anisotropic plasmon resonance nature of Au nanorods was exploited to achieve distinct functionality towards synergistic *** and photochemical effects were enabled by the longitudinal and transverse plasmon resonance modes,respectively,and were enhanced by partial coating of silica nanoshells and epitaxial growth of a reactor *** excitation leads to a synergistic gain in photothermal-mediated hot carrier-driven hydrogen evolution *** approach provides important design principles for plasmonic photocatalysts in achieving spatiotemporal modulation of distinct photophysical enhancement *** also effectively broadens the sunlight response range and increases the efficacy of distinct plasmonic enhancement pathways towards solar energy harvesting and conversion.

关键词： Plasmon resonance Photothermal effect Photochemistry Photocatalysis Metal nanoparticles Charge carrier injection Heterogeneous catalysis Photoelectrochemistry

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云南疟疾及防治的医学人类学研究

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医学与哲学 2024年第14期45卷 55-59页

作者：李萍陈金星昆明医科大学马克思主义学院云南昆明650500

疟疾在云南的边疆少数民族地区长期肆虐有着深刻的多元文化背景。民族文化的因素是云南疟疾难以防治的重要原因,普遍存在的鬼神观念和巫师的仪式治疗对疟疾防治极其不利,使得少数民族群体对疟疾的致病因素、治疗和预防、择医习惯、社会... 详细信息

疟疾在云南的边疆少数民族地区长期肆虐有着深刻的多元文化背景。民族文化的因素是云南疟疾难以防治的重要原因,普遍存在的鬼神观念和巫师的仪式治疗对疟疾防治极其不利,使得少数民族群体对疟疾的致病因素、治疗和预防、择医习惯、社会应对等产生了认知偏差,这是造成云南疟疾防治“最困难”的原因之一。这种现象的背后是人的利益、权力以及文化上的特性等因素在发挥作用,所以云南的疟疾防治除了在给予常规医疗和特效药物之外,还要注重医疗的文化适应性,破除疟疾的神秘性。

关键词：云南疟疾医学人类学神秘性巫师

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废弃塑料与CO_(2)同步回收策略

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科学通报 2024年第17期69卷 2318-2320页

作者：李盛铭汤德昌陈金星谢页平苏州大学功能纳米与软物质研究院苏州215123 中盐安徽红四方股份有限公司合肥230022

预计到2050年,全球塑料年产量将增至5亿吨[1~3].然而,塑料产量爆发式的增长与其较低回收率间的失衡导致了严重的环境污染.因此,迫切需要进行废弃塑料污染处理与防治.近几年,塑料的化学回收取得了快速的发展,通过设计高效的催化体系,可... 详细信息

预计到2050年,全球塑料年产量将增至5亿吨[1~3].然而,塑料产量爆发式的增长与其较低回收率间的失衡导致了严重的环境污染.因此,迫切需要进行废弃塑料污染处理与防治.近几年,塑料的化学回收取得了快速的发展,通过设计高效的催化体系,可将废弃塑料转化为高附加值燃料或化学品[4,5].在众多化学回收策略中,塑料与CO_(2)共升级回收能够实现“双废”协同转化,对解决塑料环境污染、减少碳排放都具有重要的意义(图1).然而,CO_(2)自身结构稳定,且存在热力学转化极限,严重制约了共回收体系的发展.基于上述挑战,本文对现有的CO_(2)串联聚酯或聚烯烃塑料的反应体系进行了总结,并对反应机理以及催化剂的“构效关系”进行了讨论,从催化剂设计以及技术经济分析(TEA)两方面对共回收体系进行了展望.

关键词：聚烯烃塑料催化剂设计废弃塑料构效关系高附加值燃料回收体系反应机理环境污染

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超敏C反应蛋白、白细胞计数、中性粒细胞百分比与社区获得性肺炎的相关性分析

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中国医药指南 2024年第7期22卷 112-114页

作者：陈金星永泰县医院检验科福州350700

目的观察超敏C反应蛋白(hs-CRP)、白细胞计数(WBC)、中性粒细胞百分比与社区获得性肺炎(CAP)的相关性。方法选取2021年1月至2022年12月收治的社区获得性肺炎患者共计90例为研究对象,回顾性分析,根据肺炎严重程度指数(PSI)不同,将患者... 详细信息

目的观察超敏C反应蛋白(hs-CRP)、白细胞计数(WBC)、中性粒细胞百分比与社区获得性肺炎(CAP)的相关性。方法选取2021年1月至2022年12月收治的社区获得性肺炎患者共计90例为研究对象,回顾性分析,根据肺炎严重程度指数(PSI)不同,将患者分为三组,轻度组(30例)、中度组(30例)、重度组(30例),所有患者均进行hs-CRP、WBC、中性粒细胞百分比检测,观察检验结果差异,对hs-CRP、WBC、中性粒细胞百分比同社区获得性肺炎的相关性进行分析。并持续跟踪90例患者治疗情况,分析hs-CRP、WBC、中性粒细胞百分比同初始治疗效果的相关性。结果治疗前,三组hs-CRP、WBC、中性粒细胞百分比对比差异有统计学意义(P 0.05)。轻度组初始治疗有效率高于中度组、重度组(P <0.05)。多因素Logistic回归分析显示治疗3 d的hs-CRP、治疗3 d的WBC为初始治疗失败的危险因素(P <0.05)。结论 CAP严重程度同hs-CRP、WBC、中性粒细胞百分比具有一定相关性,可通过观察患者hs-CRP水平指导初始治疗。

关键词：社区获得性肺炎超敏C反应蛋白白细胞计数中性粒细胞百分比

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Visual dual chemodynamic/photothermal therapeutic nanoplatform based on superoxide dismutase plus Prussian blue

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Nano Research 2019年第5期12卷 1071-1082页

作者： Shan Lei jinxing chen Kun Zeng Mozhen Wang Xuewu Ge CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China

Enzyme-based anticancer therapy is more attractive for the less side effect than conventional ***,the poor stability and low membrane permeability of enzymes during the intracellular delivery are constraints for its practical *** this work,we synthesized novel near-infrared (NIR)-responsive core-shell-structured Prussian blue@fibrous SiO2 (PBFS) nanoparticles as the carrier of superoxide dismutase (SOD) and a glutathione (GSH)-activated Fenton reagent (DiFe).The PBFS nanoparticles are further modified with aGSH-responsive cationic polymer (poly(2-(acryloyloxy)-N,N-dimethyl-N-(4-(((2-((2-(((4-methyl-2-oxo-2H-chromen-7-yl)carbamoyl)oxy)ethyl)disulfaneyl)ethoxy)carbonyl)amino)benzyl)ethan-1-aminium,PSS) containing disulfide bonds and *** SOD and DiFe are loaded on the PBFS-PSS nanoparticles,dual chemodynamic/photothermal therapeutic nanoparticulate systems (PBFS-PSS/DiFe/SOD) are *** vitro experiments show that PBFS-PSS/DiFe/SOD nanoparticles have good biocompatibility and can be tracked under fluorescence microscope during the intracellular delivery process in MCF-7 tumor cells due to the GSH-activated release of *** also exhibit high efficiency in NIR photothermal conversion and GSH-activated Fenton reaction in tumor cells,thus achieving high-efficient killing effect of tumor cells based on the combination of photothermal and chemodynamic therapeutic performance (PTT and CDT).This work offers a novel pathway to construct a visual multifunctional nanomedicine platform for future cancer therapy.

关键词： copper-zinc superoxide dismutase Fenton reagent Prussian blue near-infrared (NIR) photothermal therapy fluorescence

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Ultrastable and ultrasensitive pH-switchable carbon dots with high quantum yield for water quality identification,glucose detection,and two starch-based solid-state fluorescence materials

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Nano Research 2020年第11期13卷 3012-3018页

作者： Daiyong Chao jinxing chen Qing Dong Weiwei Wu Desheng Qi Shaojun Dong College of Chemistry Jilin UniversityChangchun130012China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China

It is attractive and encouraging to develop new fluorescent carbon dots(CDs)with excellent optical properties and promising applications ***,highly-efficient green emissive CDs(m-CDs)with a high quantum yield(QY)of 71.7%in water are prepared through a facile solvothermal ***,the m-CDs exhibit excellent fluorescence stability in the pH range of 1–***,the fluorescence intensity of the m-CDs is almost completely quenched as the pH is increased from 9 to *** mechanism of the unique pH-responsive behavior is discussed in detail and a plausible mechanism is *** to the unique pH-responsive behavior,the m-CDs are used as a on-off fluorescent probe for water quality *** combining the reversible pH-ultrasensitive optical properties of the m-CDs in the pH range of 9–10 with the glucose oxidase-mimicking(GOx-mimicking)ability of Au nanoparticles(AuNPs),glucose can be quantitatively ***,two environment-friendly starch-based solid-state fluorescence materials(powder and film)are developed through green preparation routes.

关键词： carbon dot high quantum yield pH-ultrasensitive optical properties water quality identification glucose detection solid-state fluorescence materials

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Engineering surface strain for site-selective island growth of Au on anisotropic Au nanostructures

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Nano Research 2023年第4期16卷 5873-5879页

作者： Fan Yang Ji Feng jinxing chen Zuyang Ye Jihua chen Dale KHensley Yadong Yin Department of Chemistry University of CaliforniaRiversideCalifornia 92521USA Center for Nanophase Materials Sciences Oak Ridge National LaboratoryOak RidgeTennessee 37831-6494USA Institute of Functional Nano&Soft Materials Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China

Controlled growth of islands on plasmonic metal nanoparticles represents a novel strategy in creating unique morphologies that are difficult to achieve by conventional colloidal synthesis processes,where the nanoparticle morphologies are typically determined by the preferential development of certain crystal *** work exploits an effective surface-engineering strategy for site-selective island growth of Au on anisotropic Au *** ligand modification is first employed to direct the site-selective deposition of a thin transition layer of a secondary metal,e.g.,Pd,which has a considerable lattice mismatch with *** selective deposition of Pd on the original seeds produces a high contrast in the surface strain that guides the subsequent site-selective growth of Au *** strategy proves effective in not only inducing the island growth of Au on Au nanostructures but also manipulating the location of grown *** taking advantage of the iodide-assisted oxidative ripening process and the surface strain profile on Au nanostructures,we further demonstrate the precise control of the islands’number,coverage,and wetting degree,allowing fine-tuning of nanoparticles’optical properties.

关键词： plasmonic Au nanorods island growth seed-mediated growth site-selective

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Catalase-imprinted Fe3O4/Fe@fibrous SiO2/polydopamine nanoparticles： An integrated nanoplatform of magnetic targeting, magnetic resonance imaging, and dual-mode cancer therapy

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Nano Research 2017年第7期10卷 2351-2363页

作者： jinxing chen Shan Lei Kun Zeng Mozhen Wang Anila Asif Xuewu Ge CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230016 China Interdisciplinary Research Centre in Biomedical Materials (IRCSM) COMSATS Institute of Information Technology Lahore 54000 Pakistan

Recent advances in the research on the molecular mechanism of cell death and methods for preparation of nanomaterials make the integration of various therapeutic approaches, targeting, and imaging modes into a single nanoscale complex a new trend for the development of future nanotherapeutics. Hence, a novel ellipsoidal composite nanoplatform composed of a magnetic Fe3O4/Fe nanorod core （-120 nm） enwrapped by a catalase （CAT）-imprinted fibrous SiO2/ polydopamine （F-SiO2/PDA） shell with thickness 70 nm was prepared in this work. In vitro experiments showed that the Fe3O4/Fe@F-SiO2/PDA nanoparticles can selectively inhibit the bioactivity of CAT in tumor cells by the molecular imprinting technique. As a result, the H2O2 level in tumor cells was elevated dramatically. At the same time, the Fe304FFe core released Fe ions to catalyze the conversion of H2O2 to ＊OH in tumor cells. Eventually, the concentration of ＊OH in tumor cells rapidly rose to a lethal level thus triggering apoptosis. Combined with the remarkable near-infrared light （NIR） photothermal effect of the CAT- imprinted PDA layer, the Fe3O4/Fe@F-SiO2/PDA nanoparticles can effectively kill MCF-7, HeLa, and 293T tumor cells but are not toxic to nontumor cells. Furthermore, these nanoparticles show good capacity for magnetic targeting and suitability for magnetic resonance imaging （MRI）. Therefore, the integrated multifunctional nanoplatform opens up new possibilities for high-efficiency visual targeted nonchemo therapy for cancer.

关键词： molecular imprintednanoparticles reactive oxygen species NIR photothermal therapy magnetic targeting magnetic resonanceimaging (MRI)

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Diatomic Fe-Fe catalyst enhances the ability to degrade organic contaminants by nonradical peroxymonosulfate activation system

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Nano Research 2023年第4期16卷 4678-4684页

作者： Minghua Li jinxing chen Weiwei Wu Shuangli Wu Lili Xu Shaojun Dong College of Chemistry Jilin UniversityChangchun 130012China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China University of Science and Technology of China Hefei 230026China

Atomically dispersed catalysts have been widely studied due to their high catalytic activity and atom ***-atom catalysts have achieved breakthrough progress in the degradation of emerging organic contaminants(EOCs)by activating peroxymonosulfate(PMS).However,the construction of atomically dispersed catalysts with diatomic/multiatomic metal active sites by activating PMS to degrade pollutants is still seldom reported,despite the unique merits of atom-pair in synergistic electronic modulation and breaking stubborn restriction of scaling relations on catalytic *** have synthesized Fe1-N-C,Fe_(2)-N-C,and Fe_(3)-N-C catalysts with monoatomic iron,diatomic iron,and triatomic iron active center,*** results show that the catalytic degradation activity of Fe_(2)-N-C is twice that of Fe1-N-C and Fe_(3)-N-C due to its unique Fe_(2)N6 coordination structure,which fulfilled the complete degradation of rhodamine B(RhB),bisphenol A(BPA),and 2,4-dichlorophenol(2,4-DP)within 2 *** paramagnetic resonance(EPR)and radical quenching experiments confirmed that the reaction was a nonradical reaction on the catalyst *** singlet oxygen and Fe(IV)are the key active species.

关键词： diatomic catalyst peroxymonosulfate nonradical contaminant

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Self-templated formation of cobalt-embedded hollow N-doped carbon spheres for efficient oxygen reduction

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Nano Research 2021年第8期14卷 2819-2825页

作者： Ayaz Mahsud Jianian chen Xiaolei Yuan Fenglei Lyu Qixuan Zhong jinxing chen Yadong Yin Qiao Zhang Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesJoint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow University199 Ren’ai RoadSuzhou 215123China School of Chemistry and Chemical Engineering Nantong UniversityNantong9 Seyuan RoadNantong226019China Department of Chemistry Materials Science and Engineering programand UCR Center for CatalysisUniversity of CaliforniaRiversideCA 92521USA

The slow kinetics at the cathode of oxygen reduction reaction(ORR)seriously limits the efficiencies of fuel cells and metal-air ***,the state-of-the-art ORR electrocatalyst,suffers from high cost,low earth abundance,and poor *** a self-templated strategy based on metal-organic frameworks(MOFs)is proposed for the fabrication of hollow nitrogen-doped carbon spheres that are embedded with cobalt nanoparticles(Co/HNC).The Co/HNC manifests better ORR activities,methanol tolerance,and stability than commercial Pt/*** high ORR performance of Co/NHC can be attributed to the hollow structure which provides enlarged electrochemically active surface area,the formation of more Co-N species,and the introduction of *** work highlights the significance of rational engineering of MOFs for enhanced ORR activity and stability and offers new routes to the design and synthesis of high-performance electrocatalysts.

关键词： cobalt self-templated metal organic framework hollow sphere oxygen reduction reaction

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