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Construction of Naphthalenediimide Lanthanide(Ⅲ)-MOFs and Composites Incorporated Electron-Rich Pyrene Derivative as Multifunctional Fluorescence Sensing for Nitro Aromatic Compounds and Aldehydes

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Chinese Journal of Chemistry 2024年第3期42卷 283-293页

作者： Rong Huo Ting Zhang Guang Zeng Chen wang Yong Heng Xing Feng ying Bai College of Chemistry and Chemical Engineering Liaoning Normal UniversityDalianLiaoning116029 China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023 China

The development of host-guest MOF luminescent composites has attracted considerable attention. However,it is still a challenge to reasonably design large scale conjugated polycarboxylic acids metal-organic framework (MOF) and modulate donor-acceptor interaction. Herein,a series of isostructural 3D porous lanthanide MOF [Ln_(2)(BINDI)0.5(NO_(3))(DMA)(H_(2)O)]∙DMA∙2.5H_(2)O (Ln = La (1),Ce (2),Pr (3) and Nd (4);H_(4)BINDI (N,N’-bis(5-isophthalic acid)-1,4,5,8-naphthalenediimide) were synthesized. Considering the electron-deficient performances of Ln-BINDI MOFs,D-A type composites Ln-MOFs (1—4@H_(4)TBAPy) were prepared via the incorporation of electron-rich H_(4)TBAPy (1,3,6,8-tetrakis(p-benzoic acid) pyrene),which more improved the luminescence performance of complexes 1—4 and can be used as fluorescence sensors for the detection of nitro compounds and aldehydes. High sensitivity of 1@H_(4)TBAPy towards pNBA,pNA PNP,DNP,and TNP could be achieved through hydrogen bond interactions between MOF and analytes,as well as the π-π interaction between H_(4)TBAPy and the naphthalene ring of BINDI,thus the fluorescence quenching efficiency of 1@H_(4)TBAPy was better than that of the complex 1. In addition,it is found that 1@H_(4)TBAPy has high selectivity and sensitivity to aromatic aldehyde sa,5-Mesal and HMBA. Such strategy to enhance the emission of NDI based Ln-BINDI MOFs,will open up an avenue to obtain more fluorescent MOFs for sensing.

关键词： Ln-MOF Pyrene molecule NACs Aldehydes Fluorescence sensing Carboxylate ligands Charge transfer Donor-acceptor systems

Polyoxometalate-based flexible conductive materials with superionic conductivity

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Science China Chemistry 2024年第10期67卷 3299-3309页

作者： Yuxin wang Shuping Xue Jun Geng ying Lu Teng Li Xiaozheng Duan Xue Bai Yanli Yang Jingqi Yang Shuxia Liu Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education College of ChemistryNortheast Normal UniversityChangchun 130024China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

Flexible ion-conductive materials exhibit intriguing advantages for applications in flexible electronic ***,the further enhancement of their conductivity within environmental limitations is an urgent demand for the development of flexible electronic devices,yet remains as a great ***,we report a“dual-acid”strategy,via the encapsulation of two acids,H_(3)PW_(12)O_(40)(HPW) and NH_(2)SO_(3)H(sa),with synergistic interaction into poly(vinyl alcohol)-glycerol(PVA-Gly) hydrogel,to achieve polyoxometalate(POM)-based flexible materials with superionic conductivity under various environmental *** a representative example,the prepared PVA-Gly/HPW-sa-20% hydrogel presents an ultrahigh proton conductivity ranging from -30℃(3.33×10^(-2)S cm^(-1)) to room temperature(2.78×10^(-1)S cm^(-1)) under ambient ***,the PVA-Gly/HPW-sa-20% hydrogel exhibits remarkable advantages in anti-freezing,mechanical flexibility and self-adhesiveness,making it a promising multifunctional electrolyte for flexible electronic *** experimental results and molecular dynamics(MD) simulations jointly demonstrate that sa bridges HPW clusters to form a dense proton transport pathway induced by multiple electrostatic and hydrogen bonding interactions between sa and HPW counterparts,which contributes to the high-level proton conductivity of the PVA-Gly/HPW-sa-20% *** work provides new insights into the design of POM-based flexible materials with superionic conductivity.

关键词： polyoxometalates proton conduction dual-acid effect hydrogel molecular dynamics simulation

Icariin Ameliorates D-galactose-induced Cell Injury in Neuron-like PC12 Cells by Inhibiting MPTP Opening

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当代医学科学（英文） 2024年第4期44卷 748-758页

作者： Shan-shan HU Tong-yao wang Lu NI Fan-xin HU Bo-wen YUE ying ZHENG Tian-lun wang Abhishek KUMAR Yan-yan wang Jin-e wang Zhi-yong ZHOU Third-grade Pharmacological Laboratory of Traditional Chinese Medicine State Administration of Traditional Chinese MedicineChina Three Gorges UniversityYichang 443002China College of Medicine and Health Sciences China Three Gorges UniversityYichang 443002China Third-grade Pharmacological Laboratory of Traditional Chinese Medicine State Administration of Traditional Chinese MedicineChina Three Gorges UniversityYichang 443002China College of Basic Medical Science China Three Gorges UniversityYichang 443002China

Objective:Icariin(ICA)has a good neuroprotective effect and can upregulate neuronal basal autophagy in naturally aging *** dysfunction is associated with brain aging-related neurodegenerative *** opening of the mitochondrial permeability transition pore(mPTP)is a crucial factor in mitochondrial dysfunction and is associated with excessive *** study aimed to explore that ICA protects against neuronal injury by blocking the mPTP opening and down-regulating autophagy levels in a D-galactose(D-gal)-induced cell injury ***:A cell model of neuronal injury was established in rat pheochromocytoma cells(PC 12 cells)treated with 200 mmol/L D-gal for 48 *** this cell model,PC12 cells were pre-treated with different concentrations of ICA for 24 *** was used to detect cell *** associated β-galactosidase(sa-β-Gal)staining was used to observe cell *** blot analysis was performed to detect the expression levels of a senescence-related protein(p21),autophagy markers(LC3B,p62,Atg7,Atg5 and Beclin 1),mitochondrial fission and fusion-related proteins(Drp1,Mfn2 and Opa1),and mitophagy markers(Pink1 and Parkin).The changes of autophagic flow were detected by using mRFP-GFP-LC3 *** intracellular ultrastructure was observed by transmission electron *** was used to detect mPTP,mitochondrial membrane potential(MMP),mitochondrial reactive oxygen species(mtROS)and ROS *** and apoptosis levels were detected by flow ***:D-gal treatment significantly decreased the viability of PC12 cells,and markedly increased the sa-β-Gal positive cells as compared to the control *** the D-gal stimulation,the expression of p21 was significantly ***,D-gal stimulation resulted in an elevated LC3B Ⅱ/Ⅰ ratio and decreased p62 ***,autophagosomes and autolysosomes were significantly increased,indicating abnormal activation of autopha

关键词： autophagy icariin mitochondrial dysfunction mitochondrial permeability transition pore neuronal injury

Arabidopsis WRKY1 promotes monocarpic senescence by integrative regulation of flowering,leaf senescence,and nitrogen remobilization

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Molecular Plant 2024年第8期17卷 1289-1306页

作者： Wei Zhang Shufei Tang Xuying Li Yuanyuan Chen Jiajia Li Yuyang wang Ruichao Bian ying Jin Xiaoxian Zhu Kewei Zhang Zhejiang Provincial Key Laboratory of Biotechnology on Specialty Economic Plants College of Life SciencesZhejiang Normal UniversityJinhuaZhejiang 321004P.R.China

Monocarpic senescence,characterized by whole-plant senescence following a single flowering phase,is widespread in seed plants,particularly in crops,determining seed harvest time and ***,how external and internal signals are systemically integrated into monocarpic senescence remains largely ***,we report that the Arabidopsis thaliana transcription factor WRKY1 plays essential roles in multiple key steps of monocarpic ***1 expression is induced by age,salicylic acid(sa),and nitrogen(N)*** and leaf senescence are accelerated in the WRKY1 overexpression lines but are delayed in the wrky1 *** combined DNA affinity purification sequencing and RNA sequencing analyses uncover the direct target genes of *** studies show that WRKY1 coordinately regulates three processes in monocarpic senescence:(1)suppressing FLOWERING LOCUS C gene expression to initiate flowering,(2)inducing sa biosynthesis genes to promote leaf senescence,and(3)activating the N assimilation and transport genes to trigger N *** summary,our study reveals how one stress-responsive transcription factor,WRKY1,integrates flowering,leaf senescence,and N remobilization processes into monocarpic senescence,providing important insights into plant lifetime regulation.

关键词： monocarpic senescence leaf senescence flowering time nitrogen remobilization salicylic acid WRKY transcription factor

Characteristics of rural domestic sewage discharge and their driving mechanisms: evidence from the Northern Region, China

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Frontiers of Environmental Science & Engineering 2024年第7期18卷 47-58页

作者： Jianguo Liu Ziyu Zhou Pengyu Li Zixuan wang ying Yan Xuezheng Yu Wenkai Li Tianlong Zheng yingnan Cao Wenjun Wu Wenqian Cai Zhining Shi Junxin Liu Key Laboratory of Environmental Pollution Control and Remediation at Universities of Inner Mongolia Autonomous Region College of Resources and Environmental EngineeringInner Mongolia University of TechnologyHohhot 010051China State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China SCEGC No.12 Construction Engineering Group Co. Ltd.Ankang 725000China State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation Chinese Academy of Environmental PlanningBeijing 100041China Technical Centre for Soil Agriculture and Rural Ecology and EnvironmentMinistry of Ecology and EnvironmentBeijing 100012China Sustainable Infrastructure and Resource Management(SIRM) UniSA STEMUniversity of South AustraliaSouth AustraliaMawson LakesSA 5095Australia

The traits of rural domestic sewage emission are unclear,negatively affecting rural domestic sewage treatment and sewage *** study used data from the Second National Pollution Source Census Bulletin to establish a data *** spatial distribution characteristics and main factors influencing rural sewage discharge in the Northern Region were studied using spatial autocorrelation analysis and structural *** findings demonstrated that(l)a significant Spearman correlation between drainage water volume(DwV),chemical oxygen demand(COD),ammonia nitrogen(NH_(3)-N),total nitrogen(TN),and total phosphorus(TP)and that the correlation coefficients between DWV and COD,NH,-N,TNand TP were 0.87**,1.0**,0.99**,0.99**,respectively;(2)rural sewage discharge showed spatial autocorrelation,and rural domestic sewage discharge in the districts and counties with an administration was significantly higher than in the surrounding areas;and(3)social development was the main driver rural domestic sewage changes(path coefficient was 0.407**),and the main factors influencing rural domestic sewage discharge were the urbanization rate,years of education,and population age *** study obtained the spatial variation law and clarified the main influencing factors of rural domestic sewage to provide data support and a theoretical basis for subsequent rural sewage collection and *** of the Inner Mongolia Autonomous Region in northern China as a typical case,provides a theoretical foundation for scientific decision-making on rural domestic sewage treatment at the national and regional levels and offers new perspectives for managing pollutants.

关键词： Rural domestic sewage Emission characteristics Spatial autocorrelation analysis Influencing factors

基于开放数据的云南迪庆藏族自治州综合交通优势度

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科学技术与工程 2024年第21期24卷 9132-9140页

作者：王晓云撒莹李志英杨晓辉云南大学建筑与规划学院昆明650500 云南金田建筑规划设计有限公司昆明650032

国土空间规划中科学评价规划区域的交通基础设施发展水平,对提高规划科学性具有现实意义。利用低成本开放数据,从交通本质出发,构建由4个因子组成的评价模型,在云南迪庆藏族自治州国土空间规划中进行综合交通优势度研究。结果表明:利用... 详细信息

国土空间规划中科学评价规划区域的交通基础设施发展水平,对提高规划科学性具有现实意义。利用低成本开放数据,从交通本质出发,构建由4个因子组成的评价模型,在云南迪庆藏族自治州国土空间规划中进行综合交通优势度研究。结果表明:利用开放数据可降低模型应用难度,提高评价精度和可靠性;评价显示迪庆藏族自治州综合交通优势度与其自然地理空间分布特征吻合,呈明显的“带”状分布,因此未来应优先提升澜沧江带的优势度;基于数据分析利于布局时“以流定形”,分析表明缺乏快速道路体系是迪庆藏族自治州交通供给侧的最大短板,在城市网络中其对外交通在西藏、四川方向优势度较弱,通道建设亟待加强。研究结果可为数慧赋能实现交通系统与“三生空间”融合发展和在地市级国土空间规划中应用综合交通优势理论提供参考价值。

关键词：综合交通优势度开放数据交通成本城市网络

Identification of origin of insulating polymer maneuvered photoredox catalysis

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Chinese Journal of Catalysis 2024年第8期63卷 109-123页

作者： Qiao-Ling Mo Rui Xiong Jun-Hao Dong Bai-Sheng sa Jing-ying Zheng Qing Chen Yue Wu Fang-Xing Xiao College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108FujianChina

Solid non-conjugated polymers have long been regarded as insulators due to deficiency of delocalizedπelectrons along the molecular chain *** to date,origin of insulating polymer regulated charge transfer has not yet been *** this work,we unleash the root origin of charge transport capability of insulating polymer in *** ascertain that insulating polymer plays crucial roles in fine tuning of electronic structure of transition metal chalcogenides(TMCs),which mainly include altering surface electron density of TMCs for accelerating charge transport kinetics,triggering the generation of defect over TMCs for prolonging carrier lifetime,and acting as hole-trapping mediator for retarding charge *** synergistic roles contribute to the charge transfer of insulating *** work opens a new vista of utilizing solid insulating polymers for maneuvering charge transfer toward solar energy conversion.

关键词： Insulating polymer Charge transfer Photoredox catalysis Polyelectrolyte Self-assembly

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高等农业院校课程思政建设的五重维度

沈阳大学学报（社会科学版） 2024年第1期26卷 80-87页

作者：章洪丽王颖张飒沈阳农业大学马克思主义学院辽宁沈阳110866 沈阳农业大学农学院辽宁沈阳110866

阐释了高等农业院校要结合院校自身的特点,创造性地开展具有农业特色和地方特色相结合的课程思政育人体系;指出要全面推进高等农业院校的课程思政建设工作可以从课程思政建设的工作体系、教学体系、重点内容、课程思政能力、教育教学方... 详细信息

阐释了高等农业院校要结合院校自身的特点,创造性地开展具有农业特色和地方特色相结合的课程思政育人体系;指出要全面推进高等农业院校的课程思政建设工作可以从课程思政建设的工作体系、教学体系、重点内容、课程思政能力、教育教学方法等五个维度进行探索,充分挖掘各类专业课程中的思想政治教育元素,使各类课程与思想政治教育有机融合、同向同行,形成协同育人效应。

关键词：农业院校课程思政思想政治教育教学内容

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The Influence of Chemical Admixtures on the Fluidity,Viscosity and Rheological Properties of Ultra-High Performance Concrete

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Fluid Dynamics & Materials Processing 2024年第10期20卷 2163-2181页

作者： Jin Yang Hailong Zhao Jingyi Zeng ying Su Mengdi Zhu Xingyang He School of Civil Engineering Architecture and EnvironmentHubei University of TechnologyWuhan430068China Building Waterproof Engineering and Technology Research Center of Hubei Province Hubei University of TechnologyWuhan430068China

To achieve higher strength and better durability,ultra-high performance concrete(UHPC)typically employs a relatively small water-binder ***,this generally leads to an undesired increase in the paste *** this study,the effects of liquid and powder polycarboxylate superplasticizers(PCE)on UHPC are compared and critically ***,the following influential factors are considered:air-entraining agents(AE),slump retaining agents(sa),and defoaming agents(DF)and the resulting flow characteristics,mechanical properties,and hydration properties are evaluated assuming UHPC containing 8‰powder PCE(PCE-based UHPC).It is found that the spread diameter of powder PCE is 5%higher than that of liquid *** the chemical admixtures studied,AEs have the best effect on improving UHPC workability,while DFs have the worst *** the addition of AE and sa is 1.25‰and 14.7%of PCE,paste viscosity reduces by 35%and 19%,respectively compared to the paste with only 8‰PCE.A low AE dosage(1.25‰)decreases compressive strength by 4.1%,while sa(8.1%)increases UHPC compressive strength by 9.1%.Both AE and sa significantly delay the UHPC hydration process,reducing the hydration heat release peaks by 76%and 27%,respectively.

关键词： Ultra-high performance concrete polycarboxylate superplasticizer air-entraining agent slump retaining agent rheological properties