检索结果-南通市图书馆

High-loading single cobalt atoms on ultrathin MOF nanosheets for efficient photocatalytic CO_(2) reduction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2023年第2期66卷 570-577页

作者： Quan Zuo Rui Cui Lei Wang Yuling Wang Chunyang Yu Liang Wu Yiyong Mai yongfeng zhou School of Packaging and Materials Engineering Hunan University of TechnologyZhuzhou412007China School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesState Key Laboratory of Metal Matrix CompositesShanghai Key Laboratory of Electrical Insulation and Thermal AgeingShanghai Jiao Tong UniversityShanghai200240China

Based on suitable scaffolds,constructing high-loading single-atom catalysts is a promising strategy to achieve highly efficient ***,using ultrathin metal-organic framework(MOF)nanosheets(2.4±0.5 nm)as the support,single-atom catalysts with high cobalt loading(6.0 wt%)were constructed(denoted as Co-MNSs)by a simple bottom-up synthetic *** catalytic system of Co-MNSs exhibited an outstanding photocatalytic CO_(2)-to-CO evolution rate of 7,041μmol g^(-1)h^(-1)and a selectivity of 86%in aqueous media under visible-light irradiation,which has reached the top level of the reported MOF-based *** control experiments and theoretical calculation revealed that the Co-N_(4)moiety in the MOF nanosheets acted as the active site for the photocatalytic CO_(2)-to-CO *** boosted photocatalytic performance could be ascribed to the high aspect-ratio of layered Co-MNSs providing abundant accessible active sites on their surfaces,which reduced the energy barrier,improved the charge separation efficiency,and also facilitated the adsorption of CO_(2)to form the reactive radicals of**** study provides an appealing strategy for constructing high-loading single-atom catalysts and demonstrates the significance of 2D ultrathin MOF nanosheets as the support in boosting CO_(2)photoreduction efficiency.

关键词： two-dimensional material single-atom catalyst metal-organic framework photocatalysis CO_(2)reduction

H_(2)O_(2)-responsive polymer prodrug nanoparticles with glutathione scavenger for enhanced chemo-photodynamic synergistic cancer therapy

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Bioactive Materials 2023年第7期25卷 189-200页

作者： Guanchun Wang Yue Su Xinliang Chen yongfeng zhou Ping Huang Wei Huang Deyue Yan School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai200240China The International Peace Maternity and Child Health Hospital School of MedicineShanghai Jiao Tong UniversityShanghaiChina

The combination of chemotherapy and photodynamic therapy(PDT)based on nanoparticles(NPs)has been extensively developed to improve the therapeutic effect and decrease the systemic toxicity of current ***,overexpressed glutathione(GSH)in tumor cells efficiently scavenges singlet oxygens(^(1)O_(2))generated from photosensitizers and results in the unsatisfactory efficacy of *** address this obstacle,here we design H_(2)O_(2)-responsive polymer prodrug NPs with GSH-scavenger(Ce6@P(EG-a-CPBE)NPs)for chemo-photodynamic synergistic cancer *** are constructed by the co-self-assembly of photosensitizer chlorin e6(Ce6)and amphiphilic polymer prodrug P(EG-a-CPBE),which is synthesized from a hydrophilic alternating copolymer P(EG-a-PD)by conjugating hydrophobic anticancer drug chlorambucil(CB)via an H_(2)O_(2)-cleavable linker 4-(hydroxymethyl)phenylboronic acid(PBA).Ce6@P(EG-a-CPBE)NPs can efficiently prevent premature drug leakage in blood circulation because of the high stability of the PBA linker under the physiological environment and facilitate the delivery of Ce6 and CB to the tumor site after intravenous *** internalization of Ce6@P(EG-a-CPBE)NPs by tumor cells,PBA is cleaved rapidly triggered by endogenous H_(2)O_(2)to release CB and ***6 can effectively generate abundant^(1)O_(2)under 660 nm light irradiation to synergistically kill cancer cells with ***,PBA can be transformed into a GSH-scavenger(quinine methide,QM)under intracellular H_(2)O_(2)and prevent the depletion of^(1)O_(2),which induces the cooperatively strong oxidative stress and enhanced cancer cell ***,such H_(2)O_(2)-responsive polymer prodrug NPs loaded with photosensitizer provide a feasible approach to enhance chemo-photodynamic synergistic cancer treatment.

关键词： H_(2)O_(2)-responsiveness Alternating copolymer prodrug GSH-scavenger Photosensitizer Chemo-photodynamic synergistic cancer therapy

Telomere-to-telomere haplotype-resolved reference genome reveals subgenome divergence and disease resistance in triploid Cavendish banana

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Horticulture Research 2023年第9期10卷 85-97页

作者： Hui-Run Huang Xin Liu Rida Arshad Xu Wang Wei-Ming Li yongfeng zhou Xue-Jun Ge Key Laboratory of Plant Resources Conservation and Sustainable Utilization South China Botanical GardenChinese Academy of SciencesGuangzhou 510650China South China National Botanical Garden Guangzhou 510650China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Tropical Crop Breeding Shenzhen BranchGuangdong Laboratory of Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyMinistry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China School of Marine Sciences and Biotechnology Guangxi University for NationalitiesNanning 530008China State Key Laboratory of Tropical Crop Breeding Tropical Crops Genetic Resources InstituteChinese Academy of Tropical Agricultural SciencesHaikou 571101China

Banana is one of the most important crops of the ***-type bananas,which have a monospecific Musa acuminata origin(AAA),account for around half of the global banana production,thereby are of great significance for human ***,until now,the high-quality haplotype-resolved reference genome was still undecoded for banana ***,we reported the telomere-to-telomere(T2T)and haplotype-resolved reference genome of‘Baxijiao’(Cavendish)consisting of three haploid *** sizes of the three haploid assemblies were estimated to be 477.16 Mb,477.18 Mb,and 469.57 Mb,*** with monospecific origins,the three haploid assemblies showed great differences with low levels of sequence *** large reciprocal translocations were identified among chromosomes 1,4,and *** expansion of gene families that might affect fruit quality and aroma was detected,such as those belonging to sucrose/disaccharide/oligosaccharide catabolic processes,sucrose metabolic process,starch metabolic process,and aromatic compound biosynthetic ***,an expansion of gene families related to anther and pollen development was observed,which could be associated with parthenocarpy and sterility of the Cavendish ***,much fewer resistance genes were identified in‘Baxijiao’than in ***,particularly in the gene clusters in chromosomes 3 and 10,providing potential targets to explore for molecular analysis of disease resistance in *** T2T haplotype-resolved reference genome will thus be a valuable genetic resource for biological studies,molecular breeding,and genetic improvement of banana.

关键词： cultivar breeding crops

Facile Preparation of Water-Soluble and Cytocompatible Small-Sized Chitosan-Polydopamine Nanoparticles

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2017年第6期35卷 931-937页

作者： Yunzhou Ni Feng Chen Leilei Shi Gangsheng Tong Jie Wang Huimei Li Chunyang Yu yongfeng zhou School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai 200240 China Instrumental Analysis Center Shanghai Jiao Tong University Shanghai 200240 China

In this paper, a kind of novel water-soluble chitosan-polydopamine （CHT-PDA） nanoparticles with a hydrody- namic diameter （Dh） around 10 nm were reported by the combination of self-polymerization of PDA and electro- static complexation between PDA and CHT in water/DMSO （W/D） mixture at the molar fraction of DMSO （XDMSO =0.37）. The preparation method was efficient with a yield of 98% around. The as-prepared water-soluble CHT-PDA nanoparticles exhibited effective UV-screen ability, enhanced visible-light transmittance and good cyto- compatibility via MTT assay, which might be used in transparent formulation for UV protection usage, especially in biological field including sun care application.

关键词： chitosan polydopamine nanoparticles UV-screen visible-light transmittance

Interfacial Reaction of Ti6Al4V Lattice Structure-Reinforced VW92 Alloy Matrix Composites

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2024年第3期37卷 570-576页

作者： Haijun Wang Renju Cheng Xianhua Chen Mingbo Yang Daiyi Deng Lirui Liu yongfeng zhou Yanlong Ma Kaihong Zheng Fusheng Pan College of Materials Science and Engineering Chongqing University of TechnologyChongqing 400054China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Institute of New Materials Guangdong Academy of SciencesGuangzhou 510650China

A novel melting infiltration by ultrasonic vibration was investigated and applied to fabricate Ti6Al4V(TC4)lattice structure-reinforced Mg-10Gd-2Y-1Zn-xZr(refer to VW92 hereafter,x=0,0.5 wt%)alloy matrix *** edge-to-edge matching model indicates that the well-matching and possible orientation relationships(ORs)between theα-Mg andα-Ti,[10-10]_(α-Mg)//[11-23]_(α-Ti) in(0002)_(α-Mg)//(10-10)_(α-Ti) possesses the smallest misfit of 0.4%(f_(r)),and thus theα-Mg grains can nucleate on the TC4 lattice *** reaction occurred in the TC4/VW92+0.5 wt%Zr composites,and the reaction product was confirmed to be Al_(2)Zr_(3),AlZr_(2) andα-Ti(Zr)particles formed by continuous solution of *** the interfacial products,the AlZr_(2) phase is a brittle phase with high-volume fraction,which is not conducive to the load *** generally speaking,theα-Ti(Zr)and theα-Mg tend to form a coherent interface,which is beneficial for improving the interfacial bonding strength of composites.

关键词： TC4 VW92 composites TC4 lattice structure Interfacial reaction Mismatch

ROS-responsive thioether-containing hyperbranchede polymer micelles for light-triggered drug releas

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

SmartMat 2022年第3期3卷 522-531页

作者： Guanchun Wang Ping Huang Lei Wang Xinliang Chen yongfeng zhou Wei Huang Deyue Yan School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghaiChina The International Peace Maternity and Child Health Hospital School of MedicineShanghai Jiao Tong UniversityShanghaiChina

As a kind of promising drug carriers,smart polymers have attracted much attention due to the effective and controlled drug release in target ***,a reactive oxygen species(ROS)-responsive thioether-containing amphiphilic hyperbranched polymer prepared from MTPA and TMPTGE(HBPMT)is synthesized from 3-(methylthio)propylamine(MTPA)and trimethylolpropane triglycidyl ether(TMPTGE)by the amine-epoxy click reaction via A2+B3 onepot *** from its inherent amphiphilic nature,HBPMT can selfassemble into stable micelles in *** by H_(2)O_(2),these micelles can be dissociated rapidly because hydrophobic thioether segments in their cores are oxidized into hydrophilic sulfoxide or sulfone ***,the ROS produced by photosensitizer under light irradiation can also play the same role of H_(2)O_(2).Such HBPMT micelles can be utilized to encapsulate anticancer drug paclitaxel(PTX)and photosensitizer chlorin e6(Ce6)simultaneously for drug delivery and control *** methyl thiazolyl tetrazolium assay toward MCF-7 tumor cells(a human breast adenocarcinoma cell line)indicates that these micelles encapsulated with PTX and Ce6 exhibit a significant combinational efficacy of cell proliferation inhibition,which means the promising potential for synergistic chemo-photodynamic cancer *** a novel nanocarrier based on amphiphilic to hydrophilic transition would provide a candidate for controlled drug release and cancer combination therapy.

关键词： drug delivery hyperbranched polymer photosensitizer ROS-responsiveness triggered drug release

Single-Metal-Atom Polymeric Unimolecular Micelles for Switchable Photocatalytic H_(2) Evolution

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CCS Chemistry 2021年第7期3卷 1963-1971页

作者： Quan Zuo Kun Feng Jun Zhong Yiyong Mai yongfeng zhou School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesState Key Laboratory of Metal Matrix CompositesShanghai Key Laboratory of Electrical Insulation and Thermal AgeingShanghai Jiao Tong UniversityShanghai 200240 Institute of Functional Nano and Soft Materials Laboratory(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123

Developing“green”catalytic systems with desirable performance such as good water solubility,recyclability,and switchability is a great ***,to address this challenge,we extend the concept of polymeric unimolecular micelles(a typical selfassembled structure)to the construction of a stimuli-responsive and recoverable molecular catalyst with single-metal atoms that exhibits switchable photocatalytic activity for water splitting.

关键词： polymer self-assembly unimolecular micelle stimuli-responsiveness photocatalyst water splitting

Supramolecular self-assembly and controllable drug release of thermosensitive hyperbranched multiarm copolymers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2010年第3期53卷 487-494页

作者： GUO Bo,SUN XiaoYi,zhou yongfeng & YAN DeYue College of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China College of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai China

A novel temperature-responsive hyperbranched multiarm copolymer with a hydrophobic hyperbranched poly(3-ethyl-3-(hydroxymethyl)oxetane)(HBPO) core and thermosensitive poly(N-isopropylacrylamide)(PNIPAM) arms was synthesized via the atom transfer radical polymerization(ATRP) of NIPAM monomers from a hyperbranched HBPO *** was found that HBPO-star-PNIPAM self-assembled into multimolecular micelles(around 60 nm) in water at room temperature according to pyrene probe fluorescence spectrometry,1H NMR,TEM,and DLS *** micelle solution showed a reversible thermosensitive phase transition at a lower critical solution temperature(LCST)(around 32°C) observed by variable temperature optical absorbance *** temperature NMR and DLS analyses demonstrated that the LCST transition originated from the secondary aggregation of the micelles driven by increasing hydrophobic interaction due to the dehydration of PNIPAM shells upon *** drug loading and release properties of HBPO-star-PNIPAM micelles were also investigated using prednisone acetate as a model *** micelles showed a much improved drug encapsulation efficiency and temperature-dependent sustainable release behavior due to the special micellar *** micelles exhibited no apparent cytotoxicity against human HeLa cells.

关键词： hyperbranched polymers thermosensitive copolymer supramolecular self-assembly ATRP drug delivery

The haplotype-resolved T2T genome of teinturier cultivar Yan73 reveals the genetic basis of anthocyanin biosynthesis in grapes

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Horticulture Research 2023年第11期10卷 180-192页

作者： Kekun Zhang Mengrui Du Hongyan Zhang Xiaoqian Zhang Shuo Cao Xu Wang Wenrui Wang Xueqiang Guan Penghui zhou Jin Li Wenguang Jiang Meiling Tang Qiuling Zheng Muming Cao yongfeng zhou Keqin Chen Zhongjie Liu Yulin Fang College of Enology Heyang Viti-Viniculture StationNingxia Helan Mountain’s East Foothill Wine Experiment and Demonstration StationNorthwest A&F UniversityYangling 712100China National Key Laboratory of Tropical Crop Breeding Shenzhen BranchGuangdong Laboratory of Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyMinistry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen518120China College of Agriculture Shanxi Agricultural UniversityTaigu 030801China Shandong Grape Research Institute Shanda South RoadJinan 250199China Shandong Technology Innovation Center of Wine Grape and Wine COFCO Great Wall Wine(Penglai)Co.Ltd.Yantai 265600China Yantai Changyu Group Co. Ltd.Yantai 264001China Yantai Academy of Agricultural Sciences Gangcheng West StreetYantai 264000China Viticulture and Wine Research Institute Guangxi Academy of Agricultural SciencesNanning 530007China National Key Laboratory of Tropical Crop Breeding Tropical Crops Genetic Resources InstituteChinese Academy of Tropical Agricultural SciencesHaikou 570100China

Teinturier grapes are characterized by the typical accumulation of anthocyanins in grape skin,flesh,and vegetative tissues,endowing them with high utility value in red wine blending and nutrient-enriched foods ***,due to the lack of genome information,the mechanism involved in regulating teinturier grape coloring has not yet been elucidated and their genetic utilization research is still ***,the cultivar‘Yan73’was used for assembling the telomere-to-telomere(T2T)genome of teinturier grapes by combining the High Fidelity(HiFi),Hi-C and ultralong Oxford Nanopore Technologies(ONT)*** haplotype genomes were assembled,at the sizes of 501.68 Mb and 493.38 Mb,*** the haplotype 1 genome,the transposable elements(TEs)contained 32.77%of long terminal repeats(LTRs),while in the haplotype 2 genome,31.53%of LTRs were detected in ***,obvious inversions were identified in chromosome 18 between the two *** profiling suggested that the gene expression patterns in‘Cabernet Sauvignon’and‘Yan73’were diverse depending on tissues,developmental stages,and *** transcription program of genes in the anthocyanins biosynthesis pathway between the two cultivars exhibited high similarity in different tissues and developmental stages,whereas the expression levels of numerous genes showed significant *** with other genes,the expression levels of VvMYBA1 and VvUFGT4 in all samples,VvCHS2 except in young shoots and VvPAL9 except in the E-L23 stage of‘Yan73’were higher than those of‘Cabernet Sauvignon’.Further sequence alignments revealed potential variant gene loci and structure variations of anthocyanins biosynthesis related genes and a 816 bp sequence insertion was found in the promoter of VvMYBA1 of‘Yan73’haplotype 2 ***‘Yan73’T2T genome assembly and comparative analysis provided valuable foundations for further revealing the coloring mechanism of teinturier grapes and the genetic imp

关键词： coloring resolved similarity