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Improving interfacial and electrical properties of HfO_(2)/SiO_(2)/p-Si stacks with N_(2)-plasma-treated SiO_(2) interfacial layer

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Rare Metals 2023年第6期42卷 2081-2086页

作者： xiao-qiang chen Yu-Hua Xiong Jun Du Feng Wei Hong-Bin Zhao Qing-Zhu Zhang Wen-qiang Zhang xiao-Ping Liang Advanced Electronic Materials Institute General Research Institute for Nonferrous MetalsBeijing100088China State Key Laboratory of Advanced Materials for Smart Sensing General Research Institute for Nonferrous MetalsBeijing100088China Key Laboratory of Microelectronics Devices and Integrated Technology Institute of MicroelectronicsChinese Academy of SciencesBeijing100029China

The effect of N_(2)-plasma-treated SiO_(2) interfacial layer on the interfacial and electrical characteristics of HfO_(2)/SiO_(2)/p-Si stacks grown by atomic layer deposition(ALD) was *** microstructure and interfacial chemical bonding configuration of the HfO_(2)/SiO_(2)/Si stacks were also examined by high-resolution transmission electron microscopy(HRTEM) and X-ray photoelectron spectroscopy(XPS).Compared with the samples without N2-plasma treatment,it is found that the samples with N2-plasma treatment have less oxygen vacancy density for SiO_(2) interfacial layer and better HfO_(2)/SiO_(2) *** agreement with XPS analyses,electrical measurements of the samples with N2-plasma treatment show better interfacial quality,including lower interface-state density(Dit,9.3 × 1011 cm^(-2)·eV^(-1) near midgap) and lower oxidecharge density(Q_(ox),2.5 × 1012 cm^(-2)),than those of the samples without N_(2)-plasma ***,the samples with N_(2)-plasma treatment have better electrical performances,including higher saturation capacitance density(1.49 μF·cm^(-2)) and lower leakage current density(3.2 × 10^(-6) A·cm^(-2) at V_(g)=V_(fb)-1 V).Furthermore,constant voltage stress was applied on the gate electrode to investigate the reliability of these *** shows that the samples with N_(2)-plasma treatment have better electrical stability than the samples without N_(2)-plasma treatment.

关键词： Metal-oxide-semiconductor High-k Atomic layer deposited N_(2)-plasma treatment Interfacial characteristic Reliability

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Meat quality traits of four Chinese indigenous chicken breeds and one commercial broiler stock

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第10期14卷 896-902页

作者： Rong-fa GUAN Fei LYU xiao-qiang chen Jie-qing MA Han JIANG Chao-geng xiao Zhejiang Provincial Key Laboratory of Biometrology and Inspection and Quarantine China Jiliang University College of Biological and Environmental Engineering Zhejiang University of Technology Hubei University of Technology Food Science Institute Zhejiang Academy of Agricultural Sciences

Meat quality traits of four genotypes of Chinese indigenous chicken [Ninghai chicken(NC),frizzle chicken(FC),Ninghai xiang chicken(XC),and Zhenning loquat chicken(LC)] and one genotype of commercial broiler [Arbor Acres plus broiler(AAB)] were *** indigenous chickens were raised before the commercial chickens in order to achieve the same final processed *** chickens of NC,FC,XC,and LC showed significantly higher inosine-5′-monophosphate(IMP) content,shorter fiber diameter,and lower shear force than those of AAB(P0.05).The indigenous chickens from FC displayed the highest total lipid content in the five bird genotypes(P<0.05).Significant differences of pH,color values of L* and a*,and drip loss for the five genotypes of birds were also *** conclusion,there were significant differences in the meat quality traits of the bird breeds selected in this study,and the indigenous chickens,especially the NC genotype,produced better quality meat as far as the IMP content,fiber diameters,and shear forces were concerned.

关键词： Indigenous chicken Commercial broiler Meat quality Fiber diameter Inosine-5′-monophosphate

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Synthesis and DNA cleavage activity of diiron(Ⅲ) complex bearing pyrene group

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Chinese Chemical Letters 2008年第3期19卷 342-344页

作者： xiao qiang chen Jing Yun Wang Tong Yan Zhang Li Zhu Zhang xiao Jun Peng State Key Laboratory of Fine Chemicals. Dalian University of Technoloev. Dalian 116012. China Department of Bioscience and Biotechnology Dalian University of Technology Dalian 116023 China

As DNA cleavage agent, a new diiron（Ⅲ） complex （Fe2Lb）, in which a DNA-intercalator （pyrene） is covalently linked to a diferric moiety, has been synthesized and characterized. The DNA-binding property and DNA c... 详细信息

关键词： Diiron(Ⅲ) complex Intercalator Pyrene DNA cleavage

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Causal effects of circulating vitamin levels on the risk of heart failure:a Mendelian randomization study

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Journal of Geriatric Cardiology 2023年第3期20卷 195-204页

作者： Bo GUAN xiao-qiang chen Yan LIU Hui ZHOU Ming-Yan YANG Hong-Wei ZHENG Shi-Jun LI Jian CAO Medical School of Chinese PLA General Hospital BeijingChina Department of Cardiology Shanghai General HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina Xiangya School of Nursing Central South UniversityChangshaHunanChina Department of Cardiology Tangshan Gongren Hospital Affiliated to Hebei Medical UniversityTangshanChina Geriatric Cardiology Department of the Second Medical Center and National Clinical Research Center for Geriatric Diseases Chinese PLA General HospitalBeijingChina

BACKGROUND Observational studies suggest inverse associations between serum vitamin levels and the risk of heart failure(HF). However, the causal effects of vitamins on HF have not been fully elucidated. Here, we conducted a Mendelian randomization(MR) study to investigate the causal associations between genetically determined vitamin levels and *** Genetic instrumental variables for circulating vitamin levels, including vitamins A, B, C, D, and E, which were assessed as either absolute or metabolite levels were obtained from public genome-wide association studies. Summary statistics for single-nucleotide-polymorphisms and HF associations were retrieved from the HERMES Consortium(47,309 cases and 930,014controls) and FinnGen Study(30,098 cases and 229,612 controls). Two-sample MR analyses were implemented to assess the causality between vitamin levels and HF per outcome database, and the results were subsequently combined by *** Our MR study did not find significant associations between genetically determined circulating vitamin levels and HF risk. For absolute vitamin levels, the odds ratio for HF ranged from 0.97(95% confidence interval [CI]: 0.85–1.09, P = 0.41) for vitamin C to 1.05(95% CI: 0.61–1.82, P = 0.85) for vitamin A. For vitamin metabolites, the odds ratio ranged between 0.94(95% CI:0.75–1.19, P = 0.62) for α-tocopherol and 1.11(95% CI: 0.98–1.26, P = 0.09) for γ-*** Evidence from our study does not support the causal effects of circulating vitamin levels on HF. Therefore,there may be no direct beneficial effects of vitamin intake on the prevention of primary HF.

关键词： vitamin prevention absolute

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Chemical vapor deposition growth and transport properties of MoS_(2)-2H thin layers using molybdenum and sulfur as precursors

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Rare Metals 2022年第10期41卷 3574-3578页

作者： Zhi-Tian Shi Hong-Bin Zhao xiao-qiang chen Ge-Ming Wu Feng Wei Hai-Ling Tu Advanced Electronic Materials Institute General Research Institute for Nonferrous MetalsBeijing100088China National Engineering Research Center for Semiconductor Materials General Research Institute for Nonferrous MetalsBeijing100088China

This paper introduces a feasible process to achieve the molybdenum disulfide atomic layers using chemical vapor deposition(CVD) method,with molybdenum thin film and solid sulfur as *** some improvements were made to reduce the amount of metastable MoS_(2)-3 *** morphology of the acquired MoS_(2) layers,existing as triangular flakes or large-area continuous films,can be controlled by adjusting the synthesis time and reacting *** characterization results show that the monolayer MoS_(2) flakes reveal a(002)-oriented growth on SiO_(2)/Si substrates,and its crystalline domain size is approximately 30 μm,and the thickness is 0.65 *** the synthesis of MoS_(2)-3 R is restrained,the electronic transport properties of MoS_(2) with different layers were investigated,revealing that those properties equal with those of MoS_(2) samples prepared by exfoliation methods.

关键词： Molybdenum disulfide Chemical vapor deposition Raman spectra Atomic force microscope Electronic transport properties

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Water Soluble Amino Grafted Silicon Nanoparticles and Their Use in Polymer Solar Cells

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Chinese Journal of Polymer Science 2014年第4期32卷 395-401页

作者： Quan-xiang Yan Zhuo-wei Gu Qi Li Wei-fei Fu xiao-qiang chen Wen-qing Liu Hong-bin Pan Mang Wang 陈红征 State Key Lab of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang University

Stable aqueous amino-grafted silicon nanoparticles （SiNPs-NH2） were prepared via one-pot solution method. By grafting amino groups on the particle surface, the dispersion of SiNPs in water became very stable and clear aqueous solutions could be obtained. By incorporating SiNPs-NH2 into the hole transport layer of poly（3,4- ethylenedioxythiophene）/polystyrene sulfonic acid （PEDOT＇PSS）, the performance of polymer solar cells composed of poly[2-methoxy,5-（2＇-ethylhexyloxy）-1,4-phenylene vinylene] （MEH-PPV）：[6,6]-phenyl-C61-butyric acid methyl ester （PCBM） as active layer can be improved. SiNPs-NH2 are dispersed uniformly in the PEDOT：PSS solution and help form morphologies with small-sized domains in the PEDOT：PSS film. SiNPs-NH2 serve as screens between conducting polymer PEDOT and ionomer PSS to improve the phase separation and charge transport of the hole transport layer. As a result, the sheet resistance of PEDOT：PSS thin films is decreased from （93 ±5） × 10^5 to （13 ± 3） × 10^5 Ω/□. The power conversion efficiency （PCE） of polymer solar cells was thus improved by 9.8% for devices fabricated with PEDOT＇PSS containing 1 wt% of SiNPs-NH2, compared with the devices fabricated by original PEDOT：PSS.

关键词： SiNPs-NH2 Water-soluble Phase separation Polymer solar cells Transport.

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Synthesis and Photochemical Properties of a New Substituted Phenol Covalently Linked to Ruthenium (Ⅱ) Tris-bipyridine Containing Four Ester Groups as Sensitizer

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Chinese Chemical Letters 2004年第12期15卷 1407-1410页

作者： Feng SHI Hong Yang LI xiao Jun PENG Rong ZHANG xiao qiang chen Jiang Li FAN Li cheng SUN State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012 State Key Lab. of Fine Chemicals Dalian University of Technology Dalian 116012 China

As photosensitizer for solar cell, a new ruthenium (Ⅱ) complex with four ester groups hadbeen synthesized, in which a phenol substituted by {[(2-hydroxy-5-tert-butylbenzyl)(pyridyl-2-methyl)amino]methyl} is covalently linked to ruthenium (Ⅱ) tris-bipyridine. The structures ofthe new compounds were confirmed by NMR and ESI-MS spectra. The electrochemical andphotochemical properties were also studied.

关键词： Photosensitizer ruthenium complex phenolate ligand nanocryatalline TiO_2, solar cell.

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PERFORMANCE ENHANCEMENT OF CdS NANOROD ARRAYS/P3HT HYBRID SOLAR CELLS VIA N719 DYE INTERFACE MODIFICATION

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Chinese Journal of Polymer Science 2013年第6期31卷 879-884页

作者： Ya-xiong Nan Jun-jie Li Wei-fei Fu Wei-ming Qiu Li-jian Zuo Hong-bin Pan Quan-xiang Yan xiao-qiang chen 陈红征 State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and Functionalization and Department of Polymer Science and Engineering Zhejiang University

Improved hybrid solar cells consisting of vertical aligned cadmium sulfide （CdS） nanorod arrays and interpenetrating polythiophene （P3HT） have been achieved via modification of CdS nanorod surface by using conjugated N719 dye. The complete infiltration of P3HT between CdS nanorods interspacing was verified by scanning electron microscopy. By employing absorption and photoluminescence spectra, and current-voltage characterization the interaction between N719 molecules and CdS nanorods/P3HT interface was explored, and the role of N719 dye on the improvement of device performance was discussed.

关键词： CdS nanorods Hybrid solar cells N719 Interface modification.

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Emerging progress: photochemical transformation of nitroso compounds

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Science China Chemistry 2025年第1期68卷 118-133页

作者： Ze-Le chen qiang-qiang Li Armido Studer Jun Xuan Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials School of Chemistry & Chemical Engineering Anhui University Organisch-Chemisches Institut Universitat Münster

Nitroso compounds have emerged as highly valuable reaction partners or reagents in organic synthesis due to their rich *** versatile profile of these compounds allows them to function as electrophiles, nucleophiles, diradicals, and radical acceptors in diverse transformations. In recent years, notable progress has been made in harnessing photochemical reactions with nitroso compounds to prepare N,O-containing structures using mild and eco-friendly conditions. Various nitroso compounds like nitrosoarenes, acyloxy nitroso compounds, N-nitrosoamines and nitrites have received significant attention for their ability to introduce NO moieties into complex molecules that are otherwise difficult to access. In this review, we provide an overview of the recent advancements in the visible light-induced conversion of nitroso compounds, with particular emphasis on their role as bifunctional reagents and acceptors of radicals, carbenes and nitrenes.

关键词： nitroso compounds photochemistry radical reaction carbene transformation nitrosoarenes

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Three new triterpenoids from Rubia schumanniana

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Natural Products and Bioprospecting 2012年第4期2卷 166-169页

作者： Bin KUANG Jing HAN Guang-Zhi ZENG xiao-qiang chen Wen-Jun HE Ning-Hua TAN State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Graduate University of Chinese Academy of Sciences Beijing 100049China

Three new triterpenoids,3β-hydroxy-urs-30-p-Z-hydroxycinnamoyl-12-en-28-oic-acid(1),3β-hydroxy-olean-30-p-E-hydroxycinnamoyl-12-en-28-oic-acid(2)and 3β,6α-dihydroxy-urs-14-en-12-one(3),together with seven known triterpenoids,were isolated from the roots of Rubia *** structures were established by means of spectroscopic *** compounds were evaluated for cytotoxic activity,and compounds 2-6 showed cytotoxicity with the IC50 values of 10.75~18.87μg/mL.

关键词： Rubia schumanniana triterpenoid cytotoxicity

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