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Achieving Intrinsic Dual-Band Excitonic Luminescence from a Single Three-Dimensional Perovskite Nanoparticle Through Ni^(2+)-Mediated Halide Anion Exchange

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CCS Chemistry 2024年第2期6卷 415-426页

作者： Licheng Yu Youchao Wei yuanchao lei Caiping Liu Yongsheng Liu Maochun Hong State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002 Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China FuzhouFujian 350108 School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210

Rapid halide anion exchange easily occurring in metal-halide perovskite nanoparticles(NPs)makes it nearly impossible to create a single three-dimensional(3D)CsPbX_(3)(X=Cl,Br,I)NP that simultaneously comprises two separate perovskite *** circumvent this problem,we first propose a Ni^(2+)-mediated halide anion-exchange strategy in zero-dimensional(0D)Ni^(2+)-doped Cs_(4)PbBr_(6)(Cs_(4)PbBr_(6):Ni)perovskites to achieve ultra-stable 3D CsPbX_(3)NPs with two coexisting different perovskite individuals of CsPbCl_(3)and/or CsPbBr_(3).By combining the experimental results with first-principles calculations,we confirm that the completely isolated[PbBr_(6)]4−octahedra in 0D Cs_(4)PbBr_(6):Ni NPs can restrict rapid halide anion exchange and the anion diffusion preferentially proceeds in the proximity of substitutional NiPb centers,namely[NiBr_(6)]4−octahedra in a meta-stable state,rather than in the 0D Cs_(4)PbBr_(6)and residual 3D CsPbBr_(3)regions,thereby delivering intrinsic dual-band excitonic luminescence from a single 3D CsPbX_(3)NP with a more stable and efficient CsPbCl_(3)component as compared to its counterparts synthesized using conventional *** new insights regarding the precise control of halide anion exchange enable the preparation of a new type of high-efficiency perovskite materials with suppressed anion interdiffusion for prospective optoelectronic devices.

关键词： excitonic luminescence three-dimensional CsPbX_(3) perovskite nanoparticle halide anion exchange impurity doping

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Breaking the concentration quenching limit of lanthanide emitter through multi-coupling of confined quasi-0D & 2D energy migration

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Science China Chemistry 2024年

作者： yuanchao lei Shanshan Zhou Jianxi Ke Licheng Yu Youchao Wei Yongsheng Liu Maochun Hong State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences School of Physical Science and Technology Shanghai Tech University Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China

The widespread applications of lanthanide-doped materials have fuelled a growing demand for precise control over the luminescence characteristics of these materials. However, the limitation imposed by concentration quenching remains a major obstacle in achieving efficient luminescence from lanthanide-doped materials. Herein, a novel strategy utilizing Sc2O3:Ln3+microflowers to enable confined energy migration in both microscopic quasi-zero-dimensional（0D） and mesoscopic twodimensional（2D） multi-coupling systems is proposed to overcome the concentration quenching limit of lanthanide emitters and achieve a remarkable doping amount of 48.14% on a single particle without resorting to complex core/multishell *** studies reveal that the multi-confinement structure effectively restricts the range of energy migration and significantly reduces excitation energy migration to defects. Based on these highly doped Sc2O3microflowers, full spectrum and power-dependent tunable multi-color lanthanide emission in a single particle is successfully achieved. Furthermore, the 2Dencoded patterns derived from these microflowers hold great promise for anti-counterfeiting applications. Our findings emphasize the multi-coupling of confined quasi-0D & 2D energy migration within a well-designed structure, providing valuable insights into concentration quenching mechanisms. This also opens up new opportunities for multi-level anti-counterfeiting systems and information security.

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论地学实践的结构

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陕西师大学报（自然科学版） 1989年第4期17卷 66-70页

作者：雷援朝西北大学

在自然科学领域中,地学有着独具特色的研究内容和实践结构.本文分析了地学实践结构的物质、动态、精神、管理诸因素,特别是提出了地学实践场和地学实践场力的概念,目的是为进一步讨论地学思维的机理作准备。

关键词：地学哲学实践结构

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西方地学知识在陕西的传播

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西北大学学报(自然科学版) 1988年第4期 108-110页

作者：石河子雷援朝

本文主要介绍西方地学知识传入陕西的历史,并涉及到西方学者在陕西所做的地质调查、地理地貌和石油勘探等方面的研究情况。

关键词：自然科学史地质学陕西

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Microbe-derived non-necrotic glycoside hydrolase family 12 proteins act as immunogenic signatures triggering plant defenses

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Journal of Integrative Plant Biology 2022年第10期64卷 1966-1978页

作者： Lan Wang Hanmei Liu Mingmei Zhang Yu Ye lei Wang Jinyi Zhu Zhaodan Chen Xiaobo Zheng Yan Wang yuanchao Wang Department of Plant Pathology Nanjing Agricultural UniversityNanjing 210095China Key Laboratory of Soybean Disease and Pest Control(Ministry of Agriculture and Rural Affairs) Nanjing Agricultural University210095NanjingChina The Key Laboratory of Plant Immunity Nanjing Agricultural UniversityNanjing 210095China

Plant pattern recognition receptors(PRRs)are sentinels at the cell surface sensing microbial invasion and activating innate immune *** infection,certain microbial apoplastic effectors can be recognized by plant PRRs,culminating in immune responses accompanied by cell ***,the intricated relationships between the activation of immune responses and cell death are ***,we studied the glycoside hydrolase family12(GH12)protein,Ps109281,secreted by Phytophthora sojae into the plant apoplast during ***109281 exhibits xyloglucanase activity,and promotes *** infection in a manner dependent on the enzyme ***109281 is recognized by the membranelocalized receptor-like protein RXEG1 and triggers immune responses in various plant *** other characterized GH12 members,Ps109281 fails to trigger cell death in *** loss of cell death induction activity is closely linked to a sequence polymorphism at the *** sequence polymorphism does not affect the in planta interaction of Ps109281 with the recognition receptor RXEG1,indicating that cell death and immune response activation are determined using different regions of the GH12 *** GH12 protein also exists in other Phytophthora and fungal *** together,these results unravel the evolution of effector sequences underpinning different immune outputs.

关键词： apoplastic effector cell death glycoside hydrolases immune recognition immune responses

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Chromosome-scale genome assembly of Cucumis hystrix-a wild species interspecifically cross-compatible with cultivated cucumber

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Horticulture Research 2021年第1期8卷 655-668页

作者： Xiaodong Qin Zhonghua Zhang Qunfeng Lou lei Xia Ji Li Mengxue Li Junguo Zhou Xiaokun Zhao yuanchao Xu Qing Li Shuqiong Yang Xiaqing Yu Chunyan Cheng Sanwen Huang Jinfeng Chen State Key Laboratory of Crop Genetics and Germplasm Enhancement Nanjing Agricultural University210095 NanjingChina College of Horticulture Qingdao Agricultural University266109 QingdaoChina Institute of Vegetables and Flowers Chinese Academy of Agricultural Sciences100081 BeijingChina College of Horticulture and Landscape Henan Institute of Science and Technology453003 XinxiangChina Agricultural Genomics Institute Chinese Academy of Agricultural Sciences518120 ShenzhenChina

Cucumis hystrix Chakr.(2n=2x=24)is a wild species that can hybridize with cultivated cucumber(*** L.,2n=2x=14),a globally important vegetable ***,cucumber breeding is hindered by its narrow genetic ***,introgression from *** has been anticipated to bring a breakthrough in cucumber ***,we report the chromosome-scale assembly of *** genome(289 Mb).Scaffold N50 reached 14.1 *** 90%of the sequences were anchored onto 12 chromosomes.A total of 23,864 genes were annotated using a hybrid ***,we conducted a comprehensive comparative genomic analysis of cucumber,***,and melon(*** L.,2n=2x=24).Whole-genome comparisons revealed that *** is phylogenetically closer to cucumber than to melon,providing a molecular basis for the success of its hybridization with ***,expanded gene families of *** were significantly enriched in“defense response,”and *** harbored 104 nucleotide-binding site-encoding disease resistance gene ***,121 genes were positively selected,and 12(9.9%)of these were involved in responses to biotic stimuli,which might explain the high disease resistance of *** alignment of whole *** genome with cucumber genome and self-alignment revealed 45,417 chromosome-specific sequences evenly distributed on *** ***,we developed four *** alien addition lines and identified the exact introgressed chromosome using molecular and cytological *** assembled *** genome can serve as a valuable resource for studies on Cucumis evolution and interspecific introgression breeding of cucumber.

关键词： breeding alignment closer

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TRIZ理论及其在袋装饲料智能装车机中的应用

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饲料工业 2015年第15期36卷 6-9页

作者：黄蕾邓援超湖北工业大学机械学院湖北武汉430068

文章简单介绍TRIZ理论的来源及其解决创新问题的模式,结合饲料智能装车机上的码垛装置问题举例说明了运用TRIZ理论解决问题的具体流程,从解决方案的模型中得到实际方案和概念方案,为产品的创新设计提出了依据,并将得到的方案应用在实物... 详细信息

文章简单介绍TRIZ理论的来源及其解决创新问题的模式,结合饲料智能装车机上的码垛装置问题举例说明了运用TRIZ理论解决问题的具体流程,从解决方案的模型中得到实际方案和概念方案,为产品的创新设计提出了依据,并将得到的方案应用在实物样机中,取得了理想的结果。

关键词：饲料智能装车机 TRIZ理论组件分析创新原理技术矛盾矛盾矩阵

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An in situ chemically and physically confined sulfur-polymer composite for lithium sulfur battery with carbonate-based electrolyte

An in situ chemically and physically confined sulfur-polymer...

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河南省化学会2018年学术年会

作者： Jingjing Ma Zhiqing Lu lei Xue yuanchao Li Guangri Xu College of Chemistry and Chemical Engineering Henan Institute of Science and Technology

Lithium sulfur(Li-S)battery has been considered as one of the most promising energy storage systems for its high theoretical energy density(～2600 Wh kg)and the low cost of ***,its application is still hindered by som... 详细信息

关键词： Lithium sulfur battery sulfur-polymer composite carbonate-based electrolyte

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RNA in situ conformation sequencing reveals the architecture and regulation of the human transcriptome

RNA in situ conformation sequencing reveals the architecture...

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中国生物化学与分子生物学会第十二届全国会员代表大会暨2018年全国学术会议

作者： Zhaokui Cai Changchang Cao lei Ji Di Wang Rong Ye lei Wang yuanchao Xue Key laboratory of RNA biology Institute of BiophysicsChinese Academy of Sciences University of Chinese Academy of Sciences

RNAs are highly structured and intertwined with each other to regulate critical biological processes, yet their in situ higher-order organization and regulation remain unknown. By coupling in situ proximity ligation with massively parallel sequencing, we report RNA in situ conformation sequencing (RICseq), a method that is used to probe the three-dimensional (3D) architecture and regulations of the whole

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Northwestern Junggar Basin,Xiemisitai Mountains,China:A geochemical and geochronological approach

Northwestern Junggar Basin,Xiemisitai Mountains,China:A geoc...

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中国科学院地质与地球物理研究所2012年度（第12届）学术年会

作者： Ping Shen yuanchao Shen Xian-Hua Li Hongdi Pan Heping Zhu lei Meng Huawu Dai Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of Sciences Collage of Earth Sciences Chang'an University

We report SIMS U-Pb zircon,elemental and Nd-Sr-Pb isotopic data for the volcanic rocks and their subvolcanic units from the Xiemisitai Mountains in the West Junggar Region(Xinjiang,China),aiming to determine their ages,source regions and tectonic *** U-Pb dating results of the volcanic rocks(422.5±1.9 Ma-411.2±2.9 Ma) indicate that the volcanic strata occurred in the Xiemisitai Mountains at Late Silurian -Early Devonian time rather than Middle Devonian as suggested *** are probably the eastern extension of the early Paleozoic(Cambrian-Silurian) Boshchekul-Chingiz volcanic arc of East Kazakhstan in China. The Xiemisitai volcanic rocks include andesite,rhyolite,and their pyroclastic *** subvolcanic units are felsite and granite *** is moderately LREE-enriched,with a marked negative Nb anomaly and Th/***,felsite and granite porphyry are enriched in LREE and Th and depleted *** initial Sr isotope values of the Xiemisitai volcanic rocks and their subvolcanic units range from 0.702294 to 0.704456,ε(420 Ma) from +0.19 to + 1.88 with Nd model ages ranging from 600 Lo 803 *** Pb isotope ratios(Pb/Pb) are 17.77-17.96,(Pb/Pb) are 15.49-15.54 and(Pb/ Pb) are *** features suggest that the Xiemisitai volcanic rocks and their subvolcanic units derived from a mantle wedge significant mixed by subducted material(EMI) in a subduction zone. They also indicate significant involvement of Neoproterozoic primitive crust in the formation of the Xiemisitai *** racks are associated with a Late Silurian-Early Devonian southward subduction of the oceanic lithosphere in Lhe norLhern West Junggar *** gives rise Lo an EW-Lrending BoshchekulChingiz volcanic arc and associated metallogenic belt in the northern West Junggar Region and adjacent Kazakhstan.

关键词： Volcanic rocks Sr-Nd-Pb isotopes SIMS zircon U-Pb dating Xiemisitai Mountains West Junggar Region Xinjiang

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