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NIR-triggered on-site NO/ROS/RNS nanoreactor:Cascade-amplified photodynamic/photothermal therapy with local and systemic immune responses activation

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Opto-Electronic Advances 2024年第6期7卷 58-73页

作者： Ziqing Xu Yakun Kang Jie Zhang Jiajia Tang Hanyao Sun Yang Li Doudou He Xuan Sha Yuxia Tang Ziyi Fu Feiyun Wu Shouju Wang Laboratory of Molecular Imaging Department of RadiologyThe First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China Department of Breast Surgery The First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China Department of Women&Children Research Center The First Affiliated HospitalNanjing Medical UniversityNanjing 210029China

Photothermal and photodynamic therapies(PTT/PDT)hold promise for localized tumor treatment,yet their full potential is hampered by limitations such as the hypoxic tumor microenvironment and inadequate systemic immune *** these challenges,we present a novel near-infrared(NIR)-triggered RNS nanoreactor(PBNO-Ce6)to amplify the photodynamic and photothermal therapy efficacy against triple-negative breast cancer(TNBC).The designed PBNOCe6 combines sodium nitroprusside-doped Prussian Blue nanoparticles with Chlorin e6 to enable on-site RNS production through NIR-induced concurrent NO release and ROS *** not only enhances tumor cell eradication but also potentiates local and systemic antitumor immune responses,protecting mice from tumor *** in vivo evaluations revealed that treatment with PBNO-Ce6 leads to a remarkable 2.7-fold increase in cytotoxic T lymphocytes and a 62%decrease in regulatory T cells in comparison to the control PB-Ce6(Prussian Blue nanoparticles loaded with Chlorin e6),marking a substantial improvement over traditional PTT/*** such,the PBNO-Ce6 nanoreactor represents a transformative approach for improving outcomes in TNBC and potentially other malignancies affected by similar barriers.

关键词： photothermal therapy photodynamic therapy nitric oxide reactive nitrogen species triple-negative breast cancer immune response nanoreactor

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Spherical Polyelectrolyte Brush nanoreactor:Preparation of Hollow TiO_(2) Nanospheres and Characterization by Small Angle X-Ray Scattering

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Chinese Journal of Polymer Science 2024年第9期42卷 1393-1400,I0009页

作者： Yu-Hua Zhang Zi-Yu Zhang Xin Liu En-Guang Ma Jiang-Tao Guo Li Li Xu-Hong Guo State Key Laboratory of Chemical Engineering East China University of Science and TechnologyShanghai200237China Shandong Provincial Key Laboratory of Monocrystalline Silicon Semiconductor Materials and Technology College of Chemistry and Chemical EngineeringDezhou UniversityDezhou253023China Institute of Bast Fiber Crops&Center of Southern Economic Crops Chinese Academy of Agricultural SciencesChangsha410205China

Titanium dioxide(TiO_(2))hollow nanoparticles present significant potential for photocatalytic applications while their straightforward preparation with precise structure control is still *** work reports the approach to preparing tunable hollow TiO_(2) nanospheres by utilization of spherical polyelectrolyte brushes(SPB)as nanoreactors and *** the preparation,the evolution of the structure was characterized by small angle X-ray scattering(SAXS),and in combination with dynamic light scattering and transmission electron *** formation of TiO_(2) shell within the brush(SPB@TiO_(2))is confirmed by the significant increase of the electron density,and its internal structure has been analyzed by fitting SAXS data,which can be influenced by Titanium precursors and ammonia *** calcining SPB@TiO_(2) in a muffle furnace,hollow TiO_(2) nanospheres are produced,and their transition to the anatase crystal form is triggered,as confirmed by X-ray diffraction *** the advantages of their hollow structure,these TiO_(2) nanospheres exhibit exceptional catalytic degradation efficiency of methylene blue(MB),tetracycline(TC),and 2,4-dichlorophenoxyacetic acid(2,4-D),and also demonstrate excellent recyclability.

关键词： Spherical polyelectrolyte brush nanoreactor Hollow titanium dioxide X-ray scattering

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A confined growth strategy to construct 3DOM SiO_(2) nanoreactor insitu embedded Co_(3)O_(4) nanoparticles catalyst for the catalytic combustion of VOCs:Superior H_(2)O and SO_(2) resistance

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Nano Research 2024年第1期17卷 207-220页

作者： Weigao Han Shilin Wu Fang Dong Weiliang Han Yinghao Chu Linghui Su Zhicheng Tang State Key Laboratory for Oxo Synthesis and Selective Oxidation National Engineering Research Center for Fine Petrochemical IntermediatesLanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Dalian National Laboratory for Clean Energy Dalian 116023China College of Architecture and Environment Sichuan UniversityChengdu 610000China

SO_(2)poisoning is a common problem in the catalytic combustion of volatile organic compounds(VOCs).In this work,we took three-dimensionally ordered macroporous and mesoporous(3DOM)SiO_(2)as the nanoreactor to protect active sites from SO_(2)erosion in the catalytic combustion of ***,the confined growth of metal active nanoparticles in the multi-stage pore is also full of *** we successfully confined Co_(3)O_(4)nanoparticles(NPs)in macroporous and mesoporous ***,the precursors’growth in the pore was controlled and nanoreactors with different pore sizes were prepared by adjusting the loading amount and preparation *** is discovered that the Co_(3)O_(4)NPs confined in 3DOM SiO_(2)nanoreactor showed superior sulfur and water *** functional theory(DFT)calculations verified that the Co-Si catalyst had high SO_(2)adsorption energy(-0.48 eV),which illustrated that SO_(2)was hard to attach to the surface of the Co-Si *** SiO_(2)nanoreactor had low SO_(2)adsorption energy(-5.15 eV),which indicated that SO_(2)was easily absorbed on SiO_(2)*** illustrated that the SiO_(2)nanoreactor could protect effectively active sites from SO_(2)erosion.

关键词： zeolitic imidazolate frameworks(ZIFs) Co_(3)O_(4) benzene catalytic combustion nanoreactor sulfur and water resistance

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Nanovoid-confinement and click-activated nanoreactor for synchronous delivery of prodrug pairs and precise photodynamic therapy

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Nano Research 2022年第10期15卷 9264-9273页

作者： Peng Wang Fang Zhou Xia Yin Qingji Xie Guosheng Song Xiao-Bing Zhang Molecular Science and Biomedicine Laboratory State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China Key Laboratory of Chemical Biology and Traditional Chinese Medicine(Hunan Normal University) Ministry of EducationChangsha 410082China

Bioorthogonal cleavage reaction-triggered prodrug activation by the pretargeted methods can achieve accurate cancer ***,the click and release efficiency of these methods in vivo is limited by the space-time dislocation of bioorthogonal prodrug-trigger pairs within the tumor area,caused by their asynchronous administration and inconsistent accumulation for most delivery *** herein created a nanovoid-confinement and click-activated(NCCA)core–shell nanoreactor by incorporating prodrugs within zeolitic imidazolate framework-90(ZIF-90)as core and coating tetrazine-based covalent organic framework(COF)as *** surface modification of aptamer polymer,the NCCA nanoreactor enabled the sufficient delivery of photodynamic prodrugs within ***,the core of ZIF-90 was decomposed by tumor acidic environment,inducing the high-efficiency activation of photodynamic prodrugs via nanoconfined bioorthogonal reaction with tetrazine-based COF *** a result,such photodynamic agents are efficiently and safely accumulated into tumor and specifically activated for precise photodynamic therapy of cancer cells and tumor bearing mice with minimizing toxic side *** together,such NCCA nanoreactor clearly demonstrates the critical feasibility to realize the synchronous delivery of both prodrugs and triggers for precise treatment,which most of delivery systems are not able to afford.

关键词： nanoreactor covalent organic framework bioorthogonal reaction prodrug photodynamic therapy

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Plasmonic coupling-enhanced in situ photothermal nanoreactor with shape selective catalysis for C–C coupling reaction

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Nano Research 2020年第10期13卷 2812-2818页

作者： Zhenxing Li Yixuan Gong Xin Zhang Yangyang Wen Jiasai Yao Mingliang Hu Miao He Jiahao Liu Rui Li Fuqiang Wang Chuanxin Zhang Key Laboratory of Heary Oil Processing College of New Energy and MaterialsBeijing Key Laboratory of Biogas Upgrading UtilizationChina Universily of Petroleum(Beijing)Beijing 102249China School of New Energy Harbin Institute of Technology at Weihai2 West Wenhua RoadWeihai 264209China

Carbon-carbon(C–C)coupling reactions represent one of the most powerful tools for the synthesis of complex natural products,bioactive molecules developed as drugs and *** this work,a multifunctional nanoreactor for C–C coupling reaction was successfully fabricated via encapsulating the core-shell Cu@Ni nanocubes into ZIF-8(Cu@Ni@ZIF-8).In this nanoreactor,Ni shell of the core-shell Cu@Ni nanocubes was the catalytical active center,and Cu core was in situ heating source for the catalyst by absorbing the visible ***,benefiting from the plasmonic resonance effect between Cu@Ni nanocubes encapsulated in ZIF-8,the absorption range of nanoreactor was widened and the utilization rate of visible light was *** importantly,the microporous structure of ZIF-8 provided shape-selective of *** composite was used for the highly shape-selective and stable photocatalysed C–C coupling reaction of boric acid under visible light *** five cycles,the nanoreactor still remained high catalytical *** Cu@Ni@ZIF-8 nanoreactor opens a way for photocatalytic C–C coupling reactions with shape-selectivity.

关键词： nanoreactor metal-organic framework photocatalysis shape selective catalysis C–C coupling reaction

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The SBA-15/SO_3H nanoreactor as a highly efficient and reusable catalyst for diketene-based,four-component synthesis of polyhydroquinolines and dihydropyridines under neat conditions

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Chinese Chemical Letters 2013年第5期24卷 401-403页

作者： Sadegh Rostamnia Fatemeh Pourhassan Organic and Nano Group(ONG) Department of ChemistryFaculty of ScienceUniversity of Maragheh

An efficient diketene ring-opening synthesis of polyhydroquinoline derivatives using SBA-15 sulfonic acid modified mesoporous substrates a green and reusable catalyst in a single-pot four-component coupling reaction of diketene,alcohol,enamine,and aldehydes is *** derivatives based on neat adduct of diketene,alcohols and aldehydes using SBA-15/SO_3H nanoreactor as catalyst via a four-component reactions are also *** advantages of the present method include the use of a small amount catalyst,simple procedure with an easy filterable work-up,waste-free,green and direct synthetic method with an excellent yield of products with efficient use of catalyst and a short reaction time.

关键词： SBA-15/SO3H nanoreactor Diketene Polyhydroquinoline

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Controlled synthesis of Pt-loaded yolk-shell TiO_(2)@SiO_(2) nanoreactors as effective photocatalysts for hydrogen generation

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Frontiers of Materials Science 2022年第1期16卷 133-140页

作者： Min SHI Niannian HU Haimei LIU Cheng QIAN Chang LV Sheng WANG School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018China

Yolk-shell and hollow structures are powerful platforms for controlled release,confined nanocatalysis,and optical and electronic *** contribution describes a fabrication strategy for a yolk-shell nanoreactor(NR)using a post decoration *** widely studied yolk-shell structure of silica-coated TiO_(2)(TiO_(2)@SiO_(2))was used as a *** first,anatase TiO_(2) spheres were prepared,and subsequently were given a continuous coating of carbonaceous and silica ***,the carbonaceous layer was removed to produce a yolk-shell structure TiO_(2)@SiO_(2).By using an in-situ photodeposition method,Pt-encased spheres(Pt-TiO_(2)@SiO_(2))were synthesized with Pt nanoparticles grown on the surface of the TiO_(2) core,which contained void spaces suitable for use as *** NR showed enhanced hydrogen production with a rate of 24.56 mmol·g^(-1)·h^(-1) in the presence of a sacrificial agent under simulated *** strategy holds the potential to be extended for the synthesis of other yolk-shell photocatalytic NRs with different metal oxides.

关键词： nanoreactor TiO_(2) SiO_(2) photocatalyst hydrogen generation

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Core-Sheath CeO_(2)/SiO_(2) Nanofibers as nanoreactors for Stabilizing Sinter‑Resistant Pt,Enhanced Catalytic Oxidation and Water Remediation

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Advanced Fiber Materials 2022年第5期4卷 1278-1289页

作者： Yunpeng Wang Zhihui Li Wanlin Fu Yueming Sun Yunqian Dai School of Chemistry and Chemical Engineering Southeast UniversityNanjingJiangsu 211189People’s Republic of China

One-dimensional(1D)oxide nanofibers have attracted much attention in recent years but are still hampered by the difficulty in the expansion to 2D or 3D ***,ultrathin CeO_(2)/SiO_(2)nanofibers with intriguing core-sheath structures were simply fabricated by a facile single-spinneret electrospinning method and were subsequently integrated as 2D nanofi-brous mats and 3D *** secondary oxide(i.e.,SiO_(2))could induce a unique fine structure and further inhibit the sintering of CeO_(2)nanocrystals,endowing the resultant dual-oxide nanofibers with high porosity,good flexibility,and enriched oxygen *** from the core-sheath structure and dual-oxide component,the CeO_(2)/SiO_(2)nanofibers could stabilize 2.59 nm-Pt clusters against sintering at 600℃.Once assembled into a 2D mat,the nanofibers could efficiently decrease the soot oxidation temperature by 63℃.Moreover,the core-sheath CeO_(2)/SiO_(2)nanofibers can be readily integrated with graphene nanosheets into a 3D sponge via a gas foaming protocol,showing 218.5 mg/g of adsorption capacity toward Rhodamine B *** work shed lights on the versatile applications of oxide nanofibers toward clean energy ultili-zation and low-carbon development.

关键词： Core-sheath structure CeO_(2) Nanofiber nanoreactor

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Catalysis under shell： Improved CO oxidation reaction confined in Pt@h-BN core-shell nanoreactors

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Nano Research 2017年第4期10卷 1403-1412页

作者： Mengmeng Sun Qiang Fu Lijun Gao Yanping Zheng Yangyang Li Mingshu Chen Xinhe Bao State Key Laboratory of Catalysis iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China Department of Chemical Physics University of Science and Technology of China Hefei230026 China State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry Xiamen University Xiamen 361005 China

Core-shell nanostructures consisting of active metal cores and protective shells often exhibit enhanced catalytic performance, in which reactants can access a small part of the core surfaces through the pores in the shells. In this study, we show that Pt nanoparticles （NPs） can be embedded into few-layer hexagonal boron nitride （h-BN） overlayers, forming Pt@h-BN core-shell nanocatalysts. The h-BN shells not only protect the Pt NPs under harsh conditions but also allow gaseous molecules such as CO and 02 to access a large part of the Pt surfaces through a facile intercalation process. As a result, the Pt@h-BN nanostructures act as nanoreactors, and CO oxidation reactions with improved activity, selectivity, and stability occur at the core-shell interfaces. The confinement effect exerted by the h-BN shells promotes the Pt-catalyzed reactions. Our work suggests that two-dimensional shells can function as robust but flexible covers on nanocatalyst surfaces and tune the surface reactivity.

关键词： core-shell CO oxidation Pt hexagonal boron nitride nanoreactor

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Enhanced Catalytic Activity of Gold@Polydopamine nanoreactors with Multi-compartment Structure Under NIR Irradiation

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Nano-Micro Letters 2019年第4期11卷 469-484页

作者： Shilin Mei Zdravko Kochovski Rafael Roa Sasa Gu Xiaohui Xu Hongtao Yu Joachim Dzubiella Matthias Ballauff Yan Lu Soft Matter and Functional Materials Helmholtz-Zentrum Berlin für Materialien und EnergieHahn-Meitner Platz 114109 BerlinGermany Department of Applied Physics I University of Málaga29071 MálagaSpain College of Materials Science and Engineering Nanjing Tech UniversityNanjing 210000People’s Republic of China Institute of Physics University of Freiburg79104 FreiburgGermany Simulation of Energy Materials Helmholtz-Zentrum Berlin für Materialien und EnergieHahn-Meitner Platz 114109 BerlinGermany Institut für Physik Humboldt-Universitat zu BerlinNewtonstr.1512489 BerlinGermany Institute of Chemistry University of Potsdam14476 PotsdamGermany

Photothermal conversion(PTC)nanostructures have great potential for applications in many fields,and therefore,they have attracted tremendous ***,the construction of a PTC nanoreactor with multi-compartment structure to achieve the combination of unique chemical properties and structural feature is still challenging due to the synthetic ***,we designed and synthesized a catalytically active,PTC gold(Au)@polydopamine(PDA)nanoreactor driven by infrared irradiation using assembled PS-b-P2VP nanosphere as soft *** particles exhibit multi-compartment structure which is revealed by 3D electron tomography characterization *** feature permeable shells with tunable shell *** kinetics for the reduction reaction of 4-nitrophenol has been investigated using these particles as nanoreactors and compared with other reported ***,a remarkable acceleration of the catalytic reaction upon near-infrared irradiation is demonstrated,which reveals for the first time the importance of the synergistic effect of photothermal conversion and complex inner structure to the kinetics of the catalytic *** ease of synthesis and fresh insights into catalysis will promote a new platform for novel nanoreactor studies.

关键词： Gold@polydopamine 3D tomography nanoreactor Catalysis Photothermal conversion

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