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Luminescent gold(Ⅲ)exciplexes enable efficient multicolor electroluminescence

Science China Chemistry 2023年第11期66卷 3213-3222页

作者： Lisi Zhan Tianhao Chen Cheng Zhong Xiaosong Cao Yuewei Zhang yang zou Zhengyang Bin Jingsong You Dongdong Zhang Lian Duan Chuluo yang Shaolong Gong Department of Chemistry Hubei Key Laboratory on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan 430072China Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China Shenzhen Research Institute of Wuhan University Shenzhen 518057China Key Laboratory of Green Chemistry and Technology of Ministry of Education College of ChemistrySichuan UniversityChengdu 610064China Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China

The control of excited states and related emissive properties of gold(Ⅲ)complexes mainly depends on the modulation of intramolecular electronic interactions among gold(Ⅲ)metal center,chelating ligands and/or peripheral ***,luminescent gold(Ⅲ)systems based on intermolecular electronic interactions have never been *** we report a series of proof-of-concept gold(Ⅲ)exciplexes using a simple gold(Ⅲ)complex,AuDPPy,as an electron *** emissive properties of gold(Ⅲ)exciplexes can be regulated by combining AuDPPy with different ***,these gold(Ⅲ)exciplexes have donor-dependent emission mechanisms:dominant phosphorescence or dual radiative channels of thermally activated delayed fluorescence(TADF)and ***,these gold(Ⅲ)exciplexes deliver green-to-red electroluminescence with external quantum efficiencies(EQEs)of up to 10.1%.More importantly,using these gold(Ⅲ)exciplexes to host multi-resonance TADF emitters results in narrowband yellow,orange,and deep-red electroluminescence with high EQEs of 23.5%,24.4%,and 27.4%,respectively,competitive to the highest values for gold(Ⅲ)OLEDs in similar color gamut.

关键词： gold(Ⅲ)complex exciplexes thermally activated delayed fluorescence phosphorescence organic light-emitting diodes

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Formation Mechanism of Micropores on the Surface of Pure Aluminum Induced by High-Current Pulsed Electron Beam Irradiation

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Chinese Physics Letters 2011年第11期28卷 174-177页

作者： zou yang CAI Jie WAN Ming-Zhen LV Peng GUAN Qing-Feng College of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013

The mechanism of micropores formed on the surface of polycrystalline pure aluminum under high-current pulsed electron beam(HCPEB)irradiation is *** is discovered that dispersed micropores with sizes of 0.1–1μm on the irradiated surface of pure aluminum can be successfully fabricated after HCPEB *** dominant formation mechanism of the surface micropores should be attributed to the formation of supersaturation vacancies within the near surface during the HCPEB irradiation and the migration of vacancies along grain boundaries and/or dislocations towards the irradiated *** is expected that the HCPEB technique will become a new method for the rapid synthesis of surface porous materials.

关键词： pores surface mechanism

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Synthesis and Bioactivities of Novel N-（4-（2-Aryloxythiazol- 5-yl）but-3-yn-2-yl）benzamides

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Chinese Journal of Chemistry 2013年第2期31卷 173-181页

作者： Youquan Zhu Pei Liu Danyang Wang Jin Zhang Jie Cheng Yuan Ma Xiaomao zou Huazheng yang State Key Laboratory of Elemento-organic Chemistry Institute of Elemento-organic Chemistry Nankai University Tianjin 300071 China

A series of novel N-（4-（2-aryloxythiazol-5-yl）but-3-yn-2-yl）benzamide derivatives were designed and synthesized. Their structures were identified by IH NMR and elemental analyses. Preliminary bioassays indicated that some title compounds provided 〉 80% control of Selerotinia selerotiorum at 50 μg/mL and 〉 70% herbicidal activities against B. campestris at 100 μg/mL. Their structure-activities relationships were also discussed.

关键词： fungicides benzamide ACCase aryloxythiazole herbicide

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EffectS of sequence of nylon bags rumen incubation on kinetics of degradation in some commonly used feedstuffs in dairy rations

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Journal of Integrative Agriculture 2017年第1期16卷 162-168页

作者： DONG Shuang-zhao Arash Azarfar zou yang LI Sheng-li WANG Ya-jing CAO Zhi-jun State Key Laboratory of Animal Nutrition Beijing Engineering Technology Research Center of Raw Milk Quality and Safety Control/College of Animal Science and Technology China Agricultural University Beijing 100193 P.R.China Department of Animal Science Faculty of Agriculture Lorestan University Khorramabad PO Box 465 Iran

Nowadays, most available information on the degradative behaviour of feeds in ruminants is based on in situ incubation in the rumen, and it is adopted by many feed evaluation systems currently in use for ruminants. However, the outcome *** technique might be affected by many factors such as sequence of nylon bags incubation in the rumen. The objective of current study was to investigate effects of sequence of nylon bag incubation on degradative behavior of dry matter （DM）, crude protein （CP）, neutral detergent fiber （NDF） and acid detergent fiber （ADF） in some feed ingredients commonly used in dairy rations, including alfalfa haylage, corn silage, corn grain and soybean meal. Four multiparous Holstein lactating cows fitted with permanent ruminal cannulas were used. The nylon bags containing feed samples either were placed in the rumen at once and removed at designated time intervals （all in-gradually out method; AG） or were placed in the rumen at designated time points and retrieved at once （gradually in-all out method; GA）. Fractional rate of degradation of potentially degradable fraction, lag time and effective rumen degradability （ED） of DM and CP were significantly higher in the AG compared to the GA method （P〈0.05）. Fractional rates of DM and CP degradation was higher in alfalfa haylage samples incubated in the rumen using the AG method compared to that using the GA method （0.138 h-1 vs. 0.073 h-1 and 0.002 h-1 vs. 0.1125 h-1, for DM and CP, respectively; P〈0.05）. Due to a higher fractional rate of degradation （Kd） of DM and CP, the ED of DM and CP at different fractional passage rates were higher in the AG than those in the GA method （P〈0.05）. Potentially degradable fraction and lag time of NDF were higher in the AG method compared to the GA method （P〈0.05）. Placing all bags in the rumen at once and removing them at designated time intervals compared with introduction of bags in reverse sequence and removing them all at once led to a lower undegradable fra

关键词： in situ technique sequence of bag incubation feedstuffs degradative behavior

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Differences in the Efficiency of Potassium(K) Uptake and Use in Five Apple Rootstock Genotypes

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Journal of Integrative Agriculture 2014年第9期13卷 1934-1942页

作者： CHANG Cong LI Chao LI Cui-ying KANG Xiao-yu zou yang-jun MA Feng-wang State Key Laboratory of Crop Stress Biology for Arid Areas College of Horticulture Northwest A&F University

Plants that grow well while accumulating and transporting less potassium（K） perform better than more-sensitive plants when under deficiency conditions, which makes low-K-input and environmentally friendly agriculture possible. We conducted hydroponics and sand culture experiments to evaluate the efficiency of various apple（Malus domestica Borkh） rootstocks in their K uptake and utilization. Five genotypes were selected which are widely used in China- M. hupehensis Rehd, M. prunifolia Borkh, M. robusta Rehd, M. sieversii Roem, and M. rockii Rehd. Plant heights, root and shoot dry weights, and K concentrations were recorded. These genotypes differed markedly in dry weights, absolute and relative K concentrations, absolute and relative K accumulations, and their K efficiency ratio under deficient K conditions. The last parameter, expressed as relative shoot dry weight, was strongly and positively correlated with the other four parameters in each genotype. Therefore, we suggest that this parameter could serve as an index when selecting K-efficient genotypes. In this study, we have determined that M. sieversiiand M. rockii are K-inefficient genotypes; M. prunifolia is K-efficient genotype; M. hupehensis and M. robusta have moderate levels of potassium efficiency.

关键词： apple rootstock genotypes potassium efficiency genotype difference potassium uptake potassium utilization

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Study on dynamic characteristics of fission products in 2 MW molten salt reactor

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Nuclear Science and Techniques 2020年第2期31卷 42-54页

作者： Bo Zhou Xiao-Han Yu yang zou Pu yang Shi-He Yu Ya-Fen Liu Xu-Zhong Kang Gui-Feng Zhu Rui Yan Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

In this study,a numerical flow model of the fission products(FPs)in the primary loop system of a molten salt reactor(MSR)was established and solved using Mathematica *** simulation results were compared with those of the ORIGEN-S program in the static burnup mode,and the deviation was found to be less than 10%,which indicates that the results are in good ***,the FPs distribution in the primary loop system under normal operating conditions of the 2 MW MSR was quantitatively *** addition,the distribution phenomenon of the FPs under different flow rate conditions was *** the end of life,the FPs activity in the core region(including active region,and upper and lower plenum regions)accounted for 77.3%,and that in the hot leg #1,main pump,hot leg #2,heat exchanger,and cold leg region accounted for 1.2%,16.15%,0.99%,2.5%,and 1.9%,respectively,of the total FPs in the primary loop under normal operating *** proportion of FPs in the core decreased with the increase in flow rate in the range of 2.24-22,400 cm^3 s^-*** established analytical method and conclusions of this study can provide an important basis for radiation safety design of the primary loop,radioactive source management design,thermal-hydraulic safety analysis,and radiochemical analysis of FPs of 2 MW MSRs.

关键词： Molten salt reactor Fission products Radioactive source term Primary loop system Flow model

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基于不同ENDF格式数据库的MCNP温度相关中子截面库研究

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核动力工程 2012年第3期33卷 12-16页

作者：邹旸中国原子能科学研究院北京102413

使用截面加工程序NJOY生成以针对最新释放的ENDF/B-VII和CENDL-3.1评价核数据截面库为基础库的2个ACE格式的温度相关中子截面库。使用压水堆多普勒数值基准题对生成的2个ACE格式截面库进行基准验算。验算结果表明,所生成的2个温度截面... 详细信息

使用截面加工程序NJOY生成以针对最新释放的ENDF/B-VII和CENDL-3.1评价核数据截面库为基础库的2个ACE格式的温度相关中子截面库。使用压水堆多普勒数值基准题对生成的2个ACE格式截面库进行基准验算。验算结果表明,所生成的2个温度截面库在有效增殖系数、多普勒反应性亏损、多普勒反应性系数方面均与原基准题吻合良好,说明评价核数据截面库ENDF/B-VII和CENDL-3.1能很好地应用于ACE格式的截面库的制作。

关键词： ENDF/B-VII CENDL-3.1 温度相关截面库基准验算

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Study on the production characteristics of(131)^I and(90)^Sr isotopes in a molten salt reactor

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Nuclear Science and Techniques 2021年第3期32卷 120-128页

作者： Liang Chen Rui Yan Xu-Zhong Kang Gui-Feng Zhu Bo Zhou Liao-Yuan He yang zou Hong-Jie Xu Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China University of Chinese Academy of Sciences Beijing 100049China

The production of radionuclides(90)^Sr and(131)^I in molten salt reactors is an attractive option to address the global shortage of *** study evaluated the production characteristics of(90)^Sr and(131)^I in a modular molten salt reactor,such as equilibrium time,yield,and cooling time of isotopic *** fuel burn-up of a small modular molten salt reactor was analyzed by the Triton module of the scale program,and the variation in the fission yields of the two nuclides and their precursors with burn-up *** yield of(131)^I and~(131)Te has been increasing during the lifetime.131 I has an equilibrium time of about 40 days,a saturation activity of about 40,300 TBq,and while~(131)Te takes 250 min to reach equilibrium,the equilibrium activity was about 38,000 *** yields of90 Sr and~(90)Kr decreased gradually,the equilibrium time of90 Kr was short,and(90)^Sr could not reach *** on the experimental data of molten salt reactor experiment,the amount of nuclide migration to the tail gas and the corresponding cooling time of the isotope impurities under different extraction methods were *** the HF-H_2 bubbling method,3.49×10^(5)TBq of(131)^I can be extracted from molten salt every year,and after13 days of cooling,the impurity content meets the medical *** the electric field method,1296 TBq of(131)^I can be extracted from the off-gas system(its cooling time is 11 days)and 109 TBq of(90)^*** yields per unit power for(131)^I and(90)^Sr is approximately 1350 TBq/MW and 530 TBq/MW,respectively,which shows that molten salt reactors have a high economic value.

关键词： Molten salt reactor (131)^I (90)^Sr Nuclide production

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A multifunctional biomedical patch based on hyperbranched epoxy polymer and MXene

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Science China(Technological Sciences) 2021年第12期64卷 2744-2754页

作者： zou yang JIN Xin ZHANG XiaoPing KONG XiaoLing ZHANG Qian XIE XianHua LIU ChangJun KE LinNan LIU WenGuang WANG Wei School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin 300350China Institutes for Food and Drug Control Beijing 100050China

Biomedical patches play fundamental roles in various applications such as wound closure and tissue *** hybrid patches integrating versatile properties will prominently improve the therapeutic effects in clinical ***,an epoxy network loading curcumin and Ti3 C2 TxMXenes were developed as a hybrid biomedical *** hybrid patch was basically prepared through an epoxy/thiol curing chemistry,and its topological structure can be destructed and rearranged as a vitrimer does due to the active transesterification at high *** resulted hybrid patch exhibits shape-morphing capability,multi-substrate adhesion,self-healing ability,and photothermal effects under 980 nm near infrared(NIR).Additionally,the asprepared hybrid patch possesses strong UV-shielding,excellent oxidation resistance(ROS scavenging efficiency was 89.3%in3 min),highly effective antibacterial vitality(more than 99%)against *** and ***,and good *** a proof of concept,the present multifunctional hybrid patch broadens the potential applications in the biomedical field.

关键词： biomedical patch MXenes photothermal processability antioxidation antibacterial activity

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Burnup optimization of once-through molten salt reactors using enriched uranium and thorium

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Nuclear Science and Techniques 2022年第1期33卷 44-59页

作者： Meng-Lu Tan Gui-Feng Zhu Zheng-De Zhang yang zou Xiao-Han Yu Cheng-Gang Yu Ye Dai Rui Yan Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Shanghai Jiao Tong University Shanghai 200240China

The advantages of once-through molten salt reactors include readily available fuel,low nuclear proliferation risk,and low technical *** is potentially the most easily commercialized fuel cycle mode for molten salt ***,there are some problems in the parameter selection of once-through molten salt reactors,and the relevant burnup optimization work requires further *** study examined once-through graphitemoderated molten salt reactor using enriched uranium and *** fuel volume fraction(VF),initial heavy nuclei concentration(HN_(0)),feeding uranium enrichment(E_(FU)),volume of the reactor core,and fuel type were changed to obtain the optimal conditions for *** found an optimal region for VF and HN_(0) in each scheme,and the location and size of the optimal region changed with the degree of E_(FU),core volume,and fuel *** recommended core schemes provide a reference for the core design of a once-through molten salt reactor.

关键词： Once-through fuel cycle Molten salt reactor Enriched uranium Thorium

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