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Organic Host-Guest Materials with Bright Red Room-Temperature Phosphorescence for Persistent Bioimaging

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中国化学:英文版 2023年第13期41卷 1575-1582页

作者： Yueyue Si Yeyun Zhao Wenbo Dai Shisheng Cui Peng Sun Jianbing Shi Bin Tong Zhengxu Cai yuping dong Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing100081 China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing100081 China

Organic room-temperature phosphorescence(RTP)materials have attracted immense attention in bioimaging due to their long emission lifetime and large Stokes *** materials with long emission wavelength can improve the penetration depth for ***,the design of red persistent RTP materials is still *** this study,a fused-ring structure has been proposed to effectively decrease the triplet energy level,thus extending the emission wavelength of *** addition,the fused-ring structure exhibits a high molar extinction coefficient(ɛ)and high luminescence efficiency due to the rigid structure.A new class of crystalline hosts(iminodibenzyl,IDB)are developed to stabilize the triplet excitons that are generated from the fused-ring *** maximum RTP wavelength of doping materials can reach 635 nm with a lifetime of 9.35 ***-disperse nanoparticles are successfully prepared for in vivo time-resolved bioimaging,which eliminates the background fluorescence interference from biological *** reveal a delicate design strategy for the construction of long-wavelength emissive RTP materials for high-resolution bioimaging.

关键词： Room-temperature phosphorescence Fused-ring systems Long-wavelength emission High-resolution bioimaging Luminescence Nanoparticles

A stepwise-responsive editor integrated with three copper ions for the treatment of oral squamous cell carcinoma

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Nano Research 2024年第6期17卷 5424-5434页

作者： Jinna Ren Jingying Hu Fan dong Yan Xu Yang Peng yuping Qian Guanmeng Zhang Min Wang Yuguang Wang Department of Prosthodontics Hospital of StomatologyJilin UniversityChangchun 130021China Department of General Dentistry II Peking University School and Hospital of Stomatology&National Center for Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesBeijing 100081China Center of Digital Dentistry Peking University School and Hospital of Stomatology&National Center for Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesBeijing 100081China Department of Nursing Peking University School and Hospital of Stomatology&National Center for Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesBeijing 100081China The VIP Department School and Hospital of StomatologyChina Medical UniversityLiaoning Provincial Key Laboratory of Oral DiseasesShenyang 110002China

Cuprotosis,a new type of cell death,provides great opportunities for the treatment of oral squamous cell carcinoma,as nanocarriers of copper ions can induce cuprotosis and immunogenic ***,we studied an editor that enables production of a nanoparticle“storm”in oral squamous cell carcinoma,maximizing the toxic effect of these particles and reprogramming the tumor microenvironment;as a result,T cells and natural killer(NK)cells can infiltrate the tumor microenvironment to activate an antitumor immune *** this basis,the editor can be combined with optical therapy to improve patient *** this study,the metal ratio was regulated in response to the nanocarrier of acid response ***,in the presence of a specific copper ion content,the nanocarrier could change the permeability of the tumor cell *** on these results,the nanoparticles were cracked in an acidic environment and then released copper ***,the nanoparticles contributed to cuprotosis and immunogenic *** addition,the editor could inhibit murine oral cancer 1(MOC1)tumors in C57BL/6 without *** rate of tumor growth inhibition was as high as approximately 80%.This strategy provides a new idea for ***,it can improve the interaction between immunotherapy and the copper-induced death of oral squamous cell *** all,this study will provide a new opportunity for the effective treatment of oral squamous cell carcinoma.

关键词： cuprotosis immunogenic death photothermal therapy tumor microenvironment immunotherapy

Wide-range color-tunable afterglow emission by the modulation of triplet exciton transition processes based on buckybowl structure

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聚集体(英文)

聚集体(英文) 2023年第4期4卷 93-99页

作者： Yongfeng Zhang Chenchen Xiong Wenbo Wang Wenbo Dai Yue Ren Junming Xia Gengchen Li Jianbing Shi Bin Tong Xiaoyan Zheng Xiangfeng Shao Zhengxu Cai yuping dong Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijingChina State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhouChina Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of EducationSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijingChina

Buckybowl structures as non-uniform electrostatic potential distributions of poly-cyclic aromatic materials show a unique photoelectric *** this work,OTC was utilized for dynamic modulation of triplet exciton transition *** host molecules with different functional units were selected,thus providing dif-ferent intermolecular interactions in the host/guest ***,the delayed emissions were regulated from 536 to 624 nm via the tuning of the triplet exciton transition processes of OTC in different *** data and theoretical calculations revealed that the varied triplet transition behaviors resulted from the competition between the intersystem crossing(ISC)process of OTC-monomer and the reverse intersystem crossing(RISC)process of *** work proves the superior structure of buckybowl-based luminophore for controlling triplet exciton transition processes and supplies a new perspective for persistent afterglow luminophore design.

关键词： buckybowl structure dynamic modulation host/guest doping systems room temperature phosphores-cence triplet exciton transition processes

Red-Emissive Organic Room-Temperature Phosphorescence Material for Time-Resolved Luminescence Bioimaging

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CCS Chemistry 2022年第8期4卷 2550-2559页

作者： Wenbo Dai Yahui Zhang Xinghui Wu Shuai Guo Jieran Ma Jianbing Shi Bin Tong Zhengxu Cai Haiyan Xie yuping dong Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081 School of Life Science Advanced Research Institute of Multidisciplinary ScienceBeijing Institute of TechnologyBeijing 100081

Organic room-temperature phosphorescence(RTP)materials have been used in high-resolution ***,the development of long-wavelength-emis sion RTP materials in aqueous solution remains a ***,we report red-emissive RTP mate... 详细信息

关键词： red-emissive nanoparticle room-temperature phosphorescence fused-ring molecules dual channel imaging time-resolved luminescence imaging

The gene encoding flavonol synthase contributes to lesion mimic in wheat

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The Crop Journal 2024年第3期12卷 814-825页

作者： Tingting dong Hongchun Xiong Huijun Guo Yongdun Xie Linshu Zhao Jiayu Gu Huiyuan Li Shirong Zhao yuping Ding Xiyun Song Luxiang Liu College of Life Sciences Key Laboratory of Major Crop Germplasm Innovation and Application in QingdaoQingdao Agricultural UniversityQingdao 266109ShandongChina State Key Laboratory of Crop Gene Resources and Breeding/National Engineering Laboratory of Crop Molecular Breeding/CAEA Research and Development Centre on Nuclear Technology Applications for Irradiation Mutation Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China

Lesion mimic often exhibits leaf disease-like symptoms even in the absence of pathogen infection,and is characterized by a hypersensitive-response(HR)that closely linked to plant disease *** this,only a few lesion mimic genes have been identified in *** this investigation,a lesion mimic wheat mutant named je0297 was discovered,showing no alteration in yield components when compared to the wild type(WT).Segregation ratio analysis of the F_(2)individuals resulting from the cross between the WT and the mutant revealed that the lesion mimic was governed by a single recessive gene in *** Bulked segregant analysis(BSA)and exome capture sequencing,we mapped the lesion mimic gene designated as lm6 to chromosome *** gene fine mapping using 3315 F_(2)individuals delimited the lm6 within a 1.18 Mb *** this region,we identified 16 high-confidence genes,with only two displaying mutations in ***,one of the two genes,responsible for encoding flavonol synthase,exhibited altered expression *** phenotype analysis of TILLING mutants confirmed that the gene encoding flavonol synthase was indeed the causal gene for *** sequencing analysis revealed that the DEGs between the WT and mutant were significantly enriched in KEGG pathways related to flavonoid biosynthesis,including flavone and flavonol biosynthesis,isoflavonoid biosynthesis,and flavonoid biosynthesis ***,more than 30 pathogen infection-related(PR)genes exhibited upregulation in the *** to this expression pattern,the flavonoid content in je0297 showed a significant decrease in the 4^(th)leaf,accompanied by a notable accumulation of reactive oxygen,which likely contributed to the development of lesion mimic in the *** investigation enhances our comprehension of cell death signaling pathways and provides a valuable gene resource for the breeding of disease-resistant wheat.

关键词： Lesion mimic mutant Wheat Gene mapping Flavonol synthase gene Flavonoid

Composition, structure and mechanical properties of several natural cellular materials

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Chinese Science Bulletin 2007年第21期52卷 2903-2908页

作者： YIN Zuodong PAN ZeLin WANG Cai dong yuping OU YuXiang Beijing National Laboratory for Molecular Sciences (BNLMS) New Materials Laboratory Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China Beijing Institute of Technology Beijing 100081 China

The stem piths of sunflower, kaoliang and corn are natural cellular materials. In this paper, the contents of the compositions of these piths are determined and their cell shapes and structures are examined through scanning electron microscope (SEM) and optical microscope. Further research is conducted in the effects of the compositions and structures of the piths on the mechanical properties after testing the partial mechanical properties. The results show that the total cellulose, hemicelluloses and lignin content of each sample approaches 75% of the dry mass of its primary cell walls. With the fall of R value, a parameter relative to the contents of the main compositions, the flexibilities of the cellular piths de- scend while their stresses and rigidities increase. The basic cell shape making up the sunflower pith is approximately a tetrakaidehedron. The stem piths of kaoliang and corn are made up of cells close to hexangular prisms and a few tubular ones which can observably reinforce their mechanical properties in the axial directions.

关键词：天然泡沫合成物机械特征天然泡沫材料

An AIEE polyelectrolyte as a light-up fluorescent probe for heparin sensing in full detection range

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Science China Chemistry 2013年第9期56卷 1239-1246页

作者： CHEN dongYang SHI JianBing WU YanMei TONG Bin ZHI JunGe dong yuping School of Materials Science and Engineering Beijing Institute of Technology School of Chemistry Beijing Institute of Technology

Polyelectrolyte PTPEPyH, containing tetraphenylethene (TPE) and pyridinium, was synthesized. Its optical properties were investigated with spectroscopies and the results showed that there were two emission-enhanced stages in the interaction between positive-charged PTPEPyH and negative-charged biomacromolecule heparin. The mechanism was very different due to the reduced non-radiative energy loss and the change of surroundings. The polyelectrolyte PTPEPyH, compared with ChS and HA, also showed high selectivity for heparin in the buffer solution and could be used as a potential bio-probe for heparin quantification in the clinical full range.

关键词：聚电解质肝素检测范围荧光探针传感生物大分子硫酸软骨素光学特性

Carotenoid isomerase regulates rice tillering and grain productivity by its biosynthesis pathway

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Journal of Integrative Plant Biology 2024年第2期66卷 172-175页

作者： Chaoqing Ding Zhengji Shao yuping Yan Guangheng Zhang Dali Zeng Li Zhu Jiang Hu Zhenyu Gao Guojun dong Qian Qian Deyong Ren State Key Laboratory of Rice Biology and Breeding ChinaNational Rice Research InstituteHangzhou 310006China

Tillers are unique inflorescence-like branches in grasses,and their number determines the panicle number,plant architecture,and yield(Shang et al.,2021).Tiller formation mainly undergoes axillary meristem(AM)initiation and tiller bud outgrowth(Wang et al.,2018;Yan et al.,2023).The rice(Oryza sativa)KNOX gene OSH1 is expressed in AMs,and an osh1 mutant produces fewer tillers(Tanaka et al.,2015).

关键词： sativa Oryza panicle

Conformational sensitivity of tetraphenyl-1,3-butadiene derivatives with aggregation-induced emission characteristics

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Science China Chemistry 2019年第10期62卷 1393-1397页

作者： Yahui Zhang Huanyu Xu Weiquan Xu Chen Zhang Jianbing Shi Bin Tong Zhengxu Cai yuping dong Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of Technology

Organic dyes with conformational sensitivity can be used to probe weak interactions at the molecular ***,three molecules based on tetraphenyl-1,3-butadienes(TPBs)were synthesized and studied with respect to their synthesis,structural characterization and potential *** TPBs showed aggregation-induced emission(AIE)characteristics and sensitive conformational properties,in which the emission wavelengths could be changed in different *** TPBs single crystals revealed that the phenyl groups at the 4-position of the 1,3-butadienes contributed to their conformational ***,the potential application for monitoring the interactions among polyelectrolyte complexes and metal ions was explored,and the results showed that TPBs could be used for sensitively probing some weak interactions by changing the emission wavelengths due to their conformation-sensitive *** may become a new star in AIE research fields.

关键词： tetraphenyl-1 3-butadienes(TPBs) aggregation-induced emission(AIE) polyelectrolyte complexes(PEC) conformational sensitivity