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Mitochondria-targeted Janus mesoporous nanoplatform for tumor photodynamic therapy

Chinese chemical Letters 2024年第2期35卷 544-547页

作者： Min Dong Rui Tang Jing Li Jiajia Zhao Yu Wang Lin Ouyang Wei Lu Jun Tao Meng Dang Yuxia Tang Zhaogang Teng Key Laboratory for Organic Electronics & Information Displays and Jiangsu Key Laboratory for Biosensors Institute of Advanced MaterialsJiangsu National Synergetic Innovation Centre for Advanced MaterialsNanjing University of Post and TelecommunicationsNanjing 210023China Laboratory of Molecular Imaging Department of RadiologyThe First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China Department of Radiology The 909th HospitalSoutheast HospitalSchool of MedicineXiamen UniversityZhangzhou 363000China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringInstitute of Functional MaterialsDonghua UniversityShanghai 201620China

Photodynamic therapy(PDT)is an effective treatment method for *** the specifically accumulated of photosensitizer was very difficult in the tumor site,which greatly limited the efficacy of ***,mitochondria-targeted Janus mesoporous nanoplatform(JPMO-Pt-CTPP-ZnPc)for PDT was prepared,the nanoplatform has uniform size(275 nm)and good dispersion and *** confocal laser scanning microscopy(CLSM)revealed the signal of ZnPc of JPMO-Pt-CTPP-ZnPc were higher than JPMO-Pt-ZnPc in tumor cells,and flow cytometry results showed the cell uptake efficiency of JPMO-Pt-CTPP-ZnPc was 2.5-fold higher than that of *** revealed the modification of CTPP significantly improves the targeting ability of the *** vitro anti-tumor experiment showed the JPMO-Pt-CTPP-ZnPc significantly inhibited the growth of tumor cells upon the irradiation of low-power laser,and the survival rate of cells incubated with 60μg/mL JPMO-Pt-CTPP-ZnPc was only 3%.Simultaneously,compared with JPMO-Pt-ZnPc(not modified with mitochondria targeting molecules CTPP),the PDT efficacy of JPMO-Pt-CTPP-ZnPc was significantly better,as it has targeted mitochondria in cells.

关键词： Mesoporous materials Janus particle Photodynamic therapy Mitochondria targeting Tumor treatment

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Achieving a high dielectric tunability in strain-engineered tetragonal K_(0.5)Na_(0.5)NbO_(3) films

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npj Computational materials 2021年第1期7卷 571-579页

作者： Lanxia Hao Yali Yang Yu Huan Hongbo Cheng Yu-Yao Zhao Yingying Wang Jing Yan Wei Ren Jun Ouyang Key Laboratory for Liquid-Solid Structure Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJinanChina Institute of Advanced Energy Materials and Chemistry Shandong Provincial Key Laboratory of Molecular EngineeringSchool of Chemistry and Chemical EngineeringQilu University of Technology(Shandong Academy of Sciences)JinanChina International Centre for Quantum and Molecular Structures Department of PhysicsShanghai UniversityShanghaiChina School of Materials Science and Engineering University of JinanJinanChina

Using a modified Landau-Devonshire type thermodynamic potential,we show that dielectric tunabilityηof a tetragonal ferroelectric film can be analytically *** a given electric field E,ηis a function of the remnant polarization(P_(0)^(f))and the smallfield relative dielectric permittivity(χ_(0)^(f)),which are commonly measured material *** a survey of materials,a largeη~80%is predicted to be achievable in a(001)-oriented tetragonal(K_(0.5),Na_(0.5))NbO_(3)*** strain-stabilized tetragonal phase is verified by density functional theory(DFT)calculations.(K_(0.5),Na_(0.5))NbO_(3)films based on this design were successfully prepared via a sputtering deposition process on SrRuO_(3)-buffered(100)SrTiO_(3) *** resulted epitaxial films showed a sizable Pf0(~0.21C m^(−2))and a largeχ_(0)^(f)(~830–860),as well as a largeηclose to the theoretical *** measured dielectric tunabilities as functions of E are well described by the theoreticalη(E)curves,validating our integrated approach rooted in a theoretical understanding.

关键词： properties value film

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Crystal-phase engineering of PdCu nanoalloys facilitates selective hydrodeoxygenation at room temperature

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The Innovation 2022年第1期3卷 31-37页

作者： Shaopeng Li Minghua Dong Mi Peng Qingqing Mei Yanyan Wang Junjuan Yang Youdi Yang Bingfeng Chen Shulin Liu Dequan Xiao Huizhen Liu Ding Ma Buxing Han Beijing National Laboratory for Molecular Sciences Key Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Science University of Chinese Academy of SciencesBeijing 100049China Beijing National Laboratory for Molecular Engineering College of Chemistry and Molecular Engineering and College of EngineeringBIC-ESATPeking UniversityBeijing 100871China Center for Integrative Materials Discovery Department of Chemistry and Chemical EngineeringUniversity of New HavenWest HavenCT 06516USA

Selective hydrodeoxygenation of biomass-derived aromatic alcohols to value-added chemical or fuel is of great importance for sustainable biomass upgrading,and hydrodeoxygenation of 5-hydroxymethylfurfural(HMF)to 2,5-dimethylfuran(DMF)is one of the most attractive *** the conversion of HMF to DMF using H_(2)at ambient temperature is *** this work,we used PdCu nanoalloys to catalyze the selective hydrodeoxygenation reaction of HMF to DMF using H_(2)as the reducing *** reaction path and the product selectivity are governed by the crystallographic phase of the PdCu *** was discovered that body-centered cubic(BCC)PdCu nanoalloys supported on activated carbon(AC)exhibited outstanding performance with 93.6%yield of DMF at room temperature(PdCu/AC-BCC).A combination of experimental and density functional theory(DFT)studies showed that the tilted adsorption modes of furanic intermediates on PdCu-BCC nanoalloy surfaces accounted for the high selectivity of DMF;however,furan ring was activated on PdCu face-centered cubic(FCC)nanoalloy ***,PdCu/AC-BCC could also catalyze the hydrodeoxygenation of other aromatic alcohols at room temperature while maintaining the aromatic *** work opens the way for selective hydrodeoxygenation of the aromatic alcohols at room temperature with the aromatic ring intact.

关键词： alcohols aromatic selectivity

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In situ interphase engineering for all-solid-state Li batteries: a case study on the LiNi0.5Mn1.5O4/Li0.33La0.55TiO3 composite cathode guided by ab initio calculations

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Journal of materials Chemistry A 2024年第16期12卷 9438-9453页

作者： Lin, Che-An Ihrig, Martin Kung, Kuan-Chen Chen, Hsiang-Ching Finsterbusch, Martin Guillon, Olivier Lin, Shih-Kang Department of Materials Science and Engineering National Cheng Kung University Tainan70101 Taiwan Department of Chemical Engineering National Taiwan University of Science and Technology Taipei106 Taiwan Forschungszentrum Jülich GmbH Jülich52425 Germany Research Center National Cheng Kung University Tainan70101 Taiwan Program on Smart and Sustainable Manufacturing Academy of Innovative Semiconductor and Sustainable Manufacturing National Cheng Kung University Tainan70101 Taiwan Core Facility Center National Cheng Kung University Tainan70101 Taiwan

The sinterability and interfacial stability issues in the composite cathode have been the main bottlenecks of oxide-based all-solid-state Li battery development. The interfacial reaction between the electrode and electrolyte plays an important role in the sinterability and interfacial stability of a composite cathode. A suitable interfacial reaction can not only improve the sinterability by providing an additional driving force for chemical bond formation, but it can also stabilize the electrode/electrolyte interface by forming interfacial reaction products which remain stable during operation of the cell. In this work, a suitable dopant that can induce the formation of the desired interphase between the LiNi0.5Mn1.5O4 cathode and Li0.33La0.55TiO3 electrolyte was obtained through ab inito computational screening. Experimental verification was carried out by field-assisted sintering technology/spark plasma sintering (FAST/SPS) for obtaining mechanically stable composite cathode pellets and heat treatment for inducing the interfacial reaction. The dopant identified by computation was proven to induce the in situ formation of a stable protective layer. A successful method of simultaneously improving sinterability and interfacial stability in an oxide-based composite cathode is demonstrated in this work. © 2024 The Royal Society of Chemistry.

关键词： Spark plasma sintering

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Effect of Concentration and Residence Time of Joncryl■ADR4368 on Melt Processability of Poly(3-hydroxybutyrate)

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Journal of Renewable materials 2024年第12期12卷 2079-2094页

作者： Jéssica da Silva Chagas JoséElson Soares Filho Natália Fernanda Inocêncio Silva Marcelo Massayoshi Ueki Eliton Souto de Medeiros Renate Maria Ramos Wellen Mauricio Pinheiro de Oliveira Gelsoneide da Silva Gois Yêda Medeiros Bastos de Almeida Amélia S.F.Santos Post-Graduation Program in Materials Engineering(PPCEM) Federal University of Paraíba(UFPB)João PessoaPB 58051-900Brazil Laboratory of Materials and Biosystems(LAMAB) Federal University of Paraíba(UFPB)João PessoaPB 58051-900Brazil Department of Materials Engineering Federal University of Sergipe(UFS)Jardim Rosa ElzeSão CristóvãoSE 49100-000Brazil Institute of Science and Technology Federal University of São Paulo(UNIFESP)São Josédos CamposSP 12231-280Brazil Department of Chemical Engineering Federal University of Pernambuco(UFPE)Cidade UniversitáriaRecifePE 50670-901Brazil

Poly(3-hydroxybutyrate)(PHB)is a biothechnological and biodegradable thermoplastic polymer from the polyhydroxyalkanoates(PHAs)family,whose chain regularity,high molecular weight,and physical and mechanical properties comparable to polypropylene(PP)are characteristics that have made PHB a prominent commercial ***,its susceptibility to thermal degradation and hydrolysis has limited many *** address the challenges associated with processing,a random copolymer of 95.86 mol%3-hydroxybutyrate and 4.14 mol%3-hydroxyvalerate(referred as PHB)was compounded without(neat PHB)and with 0.25,0.5,1,and 1.5 wt%of chain extender(Joncryl■ADR 4368),consisting of multifunctional epoxy groups,and melt mixed in an internal mixer at 170℃,50 rpm,and residence times of 5,10,and 15 *** effect of chain extender concentration and residence time on the effectiveness of Joncryl■ADR 4368 to recover the pristine PHB properties were investigated through torque rheometry,melt flow index(MFI),differential scanning calorimetry(DSC),tensile testing,and thermogravimetric *** results indicated that an increase in residence time strongly influenced the prevalence of thermomechanical degradation reactions over chain extension reactions of PHB during processing in the molten *** residence times favored chain extension,while longer times favored chain *** trend led to no enhancement of PHB mechanical properties processed for 10 and 15 min,regardless of additive content *** flow index,thermogravimetric analysis and tensile strength exhibited an asymptotic behavior with the increase in additive concentration,exhibiting a noteworthy improvement in tensile strength and temperature at the highest rate of thermal degradation(TMAX),and a decrease in melt flow index of neat PHB with only 0.25 wt%of additive mixed for 5 *** results found in this work allow additional data for processing PHB by manipulating the ratios of multifunctional chain

关键词： PHB chain extender degradation epoxy groups viscosity

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Hydrogen radical-based prodrug photoactivation by modulating bond dissociation energy of a phenolic photosensitizer

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science China Chemistry 2025年

作者： Jian Sun Jinlei Peng Junwei Zhou Xiaoran Zhang Chuanwei Zhu Rong Wang Fude Feng Shu Wang Key Laboratory of High Performance Polymer Material and Technology of Ministry of Education Department of Polymer Science & EngineeringSchool of Chemistry & Chemical EngineeringNanjing University Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of Sciences State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic MaterialsChemistry and Biomedicine Innovation CenterSchool of Chemistry and Chemical EngineeringNanjing University

Phenols are extremely difficult to release the hydrogen radical （H·） due to the disfavored O–H bond dissociation energy（BDE） and undergo O–H homolysis under strong ultraviolet-C （UVC） *** this work,we provided a method to modulate the O–H BDE of phenols byπ-conjugation to electron-donating *** on a phenol-cored photosensitizer（BTP-1） revealed drastic declines of O–H BDE (80.5 vs.28.1 kcal mol-1) by comparing the ground state （S0） and triplet excited state （T1）.Consequently,BTP-1 was sensitive to visible light and generated H·after O–H *** glutathione （GSH）serving as an ultimate H·*donor,the BTP-1-based photosystem was efficient in catalyzing H·generation under physiological *** kind of hydrogen atom-based photochemistry is distinct from traditional type I/II photosensitizing pathways that are electron or energy *** applied the photosystem to solve the obstacle in hypoxia-activated prodrugs （HAPs）that face a dilemma with the heterogeneously hypoxic level of *** vitro studies demonstrated that the photosystem boosted the chemotherapy performance of TH-302 （a representative HAP） under moderate *** the capability to target redox bonds in HAPs and good compatibility with near-infrared two-photon laser,the photosystem is promising for cancer precision therapy.

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Synthesis of Fe-doped carbon hybrid composed of CNT/flake-like carbon for catalyzing oxygen reduction

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Nano Research 2022年第7期15卷 6670-6677页

作者： Fangfang Tang Wei Xia Hongjuan Zhang Lingling Zheng Yingji Zhao Jianping Ge Jing Tang School of Chemistry and Molecular Engineering Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesEast China Normal UniversityShanghai 200062China Department of Nanoscience and Nanoengineering Faculty of Science and EngineeringWaseda UniversityShinjukuTokyo 169-8555Japan JST-ERATO Yamauchi Materials Space-Tectonics Project Kagami Memorial Research Institute for Materials Science and TechnologyWaseda UniversityShinjukuTokyo 169-0051Japan Institute of Eco-Chongming Shanghai 202162China

Carbon-based materials with tunable properties have emerged as promising candidates to replace Pt-based catalysts for accelerating oxygen reduction reaction(ORR)in fuel cells or metal-air *** this work,we constructed a carbon hybrid which consists of one-dimensional(1D)carbon nanotubes and flake-like carbons by pyrolysis of leaf-like metal-organic *** optimal hybrid electrocatalyst of Fe_(7%)-L-CNT-900 possesses the desired features for ORR,including active Fe species,high degree of graphitization,large specific surface area,and hierarchical porous ***,Fe_(7%)-L-CNT900 performs a high electrocatalytic activity for ORR with a half-wave potential of 0.88 V,which is comparable to that of Pt/C(20 wt.%).This strategy provides an insight into the investigation of highly efficient and low-cost composite electrocatalyst for oxygen reduction reaction.

关键词： metal-organic frameworks porous carbon/CNT composites Fe-based active sites electrocatalyst oxygen reduction reaction

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Quasi-2D Perovskite with Ligand engineering to Improve the Stability of Phototransistor Memory with a Floating Gate

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Advanced Optical materials 2024年第21期12卷

作者： Chang, Sung-Te Chen, Wei-Cheng Lin, Chen-Fu Yu, Pei-Zhen Tsai, Cheng‑Hang Cho, Chia-Jung Lin, Yan-Cheng Chen, Wen-Chang Kuo, Chi-Ching Department of Molecular Science and Engineering Institute of Organic and Polymeric Materials National Taipei University of Technology Taipei10608 Taiwan Department of Chemical Engineering and Advanced Research Center for Green Materials Science and Technology National Taiwan University Taipei10617 Taiwan Institute of Biotechnology and Chemical Engineering I-Shou University Kaohsiung84001 Taiwan Department of Chemical Engineering National Cheng Kung University Tainan70101 Taiwan

Quasi-2D(two dimentional) perovskite is one of the potential materials in optoelectronic applications due to the scalable solution processes and low binding energy. Recent studies employing diverse spacer ligands of mono- and di-amine functional groups to form Ruddlesden-Popper (RP) and Dion-Jacobson (DJ) phase perovskites efficiently manipulate the perovskite microstructure. However, there is a notable gap in investigating the performance of photomemory devices based on perovskites using different ligands and the accommodability in polymer matrixes. Herein, the perovskite with phenethylammonium bromide (PEABr) or p-xylylenediamine (PDMA) ligands and methacrylate polymers comprising varied pendent groups (benzene and pyrene) are designed to investigate their effect. The results show that RP-phase perovskite with polymer-conferred pyrene group presented an excellent crystalline orientation, fewer grain boundaries, and higher charge transfer efficiency, attributed to superior accommodation between ligands and polymers and appropriate aggregation of pyrene groups. It demonstrates superior memory device characteristics of a high ON/OFF current ratio (2.68 × 104), low operational voltage (−0.1 V), short illumination times (0.1 s), and maintains its decent performance even under thermal environments. This work highlights that leveraging the steric hindrance of ligands and functional polymers to control the microstructure of perovskite is a prospective strategy to promote the photomemory's development. © 2024 Wiley-VCH GmbH.

关键词： Perovskite

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Highly Selective Acidic CO2 Electroreduction with Large Current on Polypyrrole-Modified Ag Catalyst by Local Microenvironment Modulation

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Advanced Energy materials 2025年第0期15卷

作者： Wang, Zhenhui Wang, Weizhou Yang, Qin Geng, Yanling Du, Yunmei Liu, Kang Wu, Zexing Lai, Jianping Li, Bin Li, Hongdong Zheng, Gengfeng Wang, Lei Key Laboratory of Eco-Chemical Engineering Ministry of Education International Science and Technology Cooperation Base of Eco-Chemical Engineering and Green Manufacturing Qingdao University of Science and Technology Qingdao266042 China College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao266042 China Laboratory of Advanced Materials Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Faculty of Chemistry and Materials Science Fudan University Shanghai200438 China

Electrocatalytic carbon dioxide reduction (CO2RR) holds great promise for carbon capture and utilization. In acidic media, CO2RR enables efficient CO2 conversion, but with low selectivity due to the competitive hydrogen evolution reaction (HER) and catalyst corrosion. Herein, conductive polymer polypyrrole (PPy) coated Ag nanoparticles (NPs) catalysts (Ag@PPy) with different thicknesses are designed and synthesized, which could create a hydrophobic environment that reduces the accessibility of H2O to the Ag NPs thereby inhibiting HER. The coating of the PPy layer also protects the catalysts from corrosion and improves the stability of the system. Among them, Ag@PPy-2 with the appropriate thickness showed up to 91.7% for the electrocatalytic reduction of CO2 to CO and high durability in acidic electrolyte at −300 mA cm−2. Density functional theory (DFT) calculation shows that Ag nanoparticles coated with PPy not only inhibit the competitive HER, but also reduce the CO2RR energy barrier, and improve the efficiency of CO2 to CO. This study may provide some new ideas for the design of advanced selective electrocatalytic CO2 reduction catalysts by local microenvironmental engineering. © 2025 Wiley-VCH GmbH.

关键词： Carbon capture and utilization

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Asymmetric dearomatization enabled by chiral Bronsted acid activation of ynamides

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science China Chemistry 2022年第1期65卷 3-4页

作者： Xingguang Li Jianwei Sun Department of Chemistry the Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SARChina Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic ChemistryState Key Laboratory of Chemical EngineeringSchool of Chemistry and Molecular EngineeringEast China University of Science&TechnologyShanghai 200237China

Chiral Bronsted acid catalysis has evolved into a powerful synthetic tool in asymmetric synthesis in the past two decades or ***,despite the broad scope of reactions achieved by chiral Bronsted acid catalysis,they onl... 详细信息

关键词： chiral activation catalysis

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