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Naphthyl Substituted Impurities Induce Efficient Room Temperature Phosphorescence

Angewandte Chemie 2023年第50期135卷

作者： Weiguo Qiao Ming Yao Jingwen Xu Haiyan Peng Jianlong Xia Xiaolin Xie Zhong'an Li Key Laboratory for Material Chemistry of Energy Conversion and Storage Ministry of Education School of Chemistry and Chemical Engineering State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology Wuhan 430074 China Contribution: Conceptualization (supporting) Investigation (lead) Methodology (equal) Resources (lead) Writing - original draft (lead) Writing - review & editing (supporting) Contribution: Investigation (supporting) Methodology (supporting) Resources (supporting) Writing - review & editing (supporting) School of Chemistry Chemical Engineering and Life Science State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Contribution: Investigation (supporting) Methodology (supporting) Writing - review & editing (supporting) Contribution: Investigation (supporting) Project administration (supporting) Supervision (supporting) Writing - review & editing (supporting) Contribution: Investigation (supporting) Project administration (supporting) Writing - review & editing (supporting) Contribution: Project administration (supporting) Resources (supporting) Writing - review & editing (supporting)

Accidentally, it was found that triphenylamine (TPA) from commercial sources shows ultralong yellow-green room temperature phosphorescence (RTP) like commercial carbazole, which however disappears for lab-synthesized TPA with high purity. Herein, we for the first time identify the impurity types that cause RTP of commercial TPA, which are two N , N -diphenyl-naphthylamine isomers. Due to similar molecular polarity and very trace amount (≈0.8 ‰, molar ratio), these naphthyl substituted impurities can be easily overlooked. We further show that even at an extremely low amount (1000000 : 1, mass ratio) of impurities, RTP emission is still generated, attributed to the triplet-to-triplet energy transfer mechanism. Notably, this doping strategy is also applicable to the triphenylphosphine and benzophenone host systems, of which strong RTP emission can be activated by simply doping the corresponding naphthyl substituted analogues into them. This work therefore provides a general and efficient host/guest strategy toward high performance and diverse organic RTP materials.

关键词： Host-Guest System Impurities Room Temperature Phosphorescence Triphenylamine Triplet-to-Triplet Energy Transfer

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Grain boundary effects on piezoelectric properties of the core–shell-structured BaTiO_(3)@TiO_(2) ceramics

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Journal of advanced Dielectrics 2018年第6期8卷 118-126页

作者： Xixi Li Zhonghua Yao Juan Xie Zongxin Li Hua Hao Minghe Cao Amjad Ullah Atta Ullah Abdul Manan Hanxing Liu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Material Science and Engineering Wuhan University of Technology Wuhan 430070P.R.China Department of Physics University of Science and Technology BannuKPKPakistan

Grain boundary effect on BaTiO_(3) has been widely investigated for several ***,all of them tailored the grain boundary by grain size of BaTiO_(3).In this case,a direct way was introduced to modify the grain boundary by coating technique to investigate the role of grain boundary in ferroelectric *** phase TiO_(2) was employed to investigate grain boundary effects on the electrical properties of BaTiO3 piezoelectric ***_(2) coating can result in the reduction of piezoelectric and ferroelectric properties and the annealing process in oxygen can increase piezoelectric behavior of pure BaTiO3 due to valence state of Ti ions while that remains for Ti-modified composition possibly due to the increased grain boundary effect by impedance *** with ferroelectric grain,grain boundary plays a critical role to impact the electrical properties of perovskite-type ferroelectric materials.

关键词： Piezoelectric properties ferroelectric properties BaTiO3 and titanates defects

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Preface to Special Issue for Chinese Symposium on Photocatalytic materials(CSPM)

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Chinese Journal of Catalysis 2019年第3期40卷 239-239页

作者：余家国李鑫李朝晖 State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology College of Forestry and Landscape Architecture Key Laboratory of Energy Plants Resource and Utilization Ministry of Agriculture South China Agricultural University State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University

The Chinese Symposium on Photocatalytic materials (CSPM) was held at the Wuhan University of technology, Wuhan, China on July 26-29, 2018. The CSPM symposium was jointly organized by Wuhan University of technology, Fuzhou University and Xuchang University, and was supported by National Natural Science Foundation of China (NSFC), Wuhan University of technology, Fuzhou University, Xuchang University, Beijing Perfectlight and others. More than 320 colleagues from four continents (Asia, America, Australia and Europe) participated in this symposium, and presented 10 plenary lectures, 13 keynote lectures, 35 invited lectures, 8 oral lectures and 144 posters. 10 best posters were selected.

关键词：光催化材料学术研讨会

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Author Correction: Reversely trapping atoms from a perovskite surface for high-performance and durable fuel cell cathodes

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Nature Catalysis 2024年 1244页

作者： Zechao Zhuang Jiarui Yang Dingsheng Wang Yadong Li Yihang Li Liangdong Fan Ruohan Yu Jinsong Wu Lixue Xia Yan Zhao Zhiquan Lang Jiexin Zhu Jiazhao Huang Jiaou Wang Yu Wang Department of Chemistry Tsinghua University Beijing P. R. China College of Chemistry and Environmental Engineering Shenzhen University Shenzhen P. R. China Interdisciplinary Research Center of Smart Sensors Academy of Advanced Interdisciplinary Research Xidian University Xi’an P. R. China Nanostructure Research Centre Wuhan University of Technology Wuhan P. R. China State Key Laboratory of Silicate Materials for Architectures International School of Materials Science and Engineering Wuhan University of Technology Wuhan P. R. China The Institute of Technological Sciences Wuhan University Wuhan P. R. China Center for Marine Materials Corrosion and Protection College of Materials Xiamen University Xiamen P. R. China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan P. R. China State Key Laboratory of Material Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan P. R. China Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences Beijing P. R. China Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai P. R. China

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Elimination of Voids at Interface of β-SiC Films and Si Substrate by Laser CVD

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Journal of Wuhan University of technology(materials Science) 2018年第2期33卷 356-362页

作者：朱佩佩 XU Qingfang GUO Han 涂溶 ZHANG Song YANG Meijun ZHANG Lianmeng GOTO Takashi YAN Jiasheng LI Shusen State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University oJ Technology Wuhan 430070 China International School of Material Science and Engineering Wuhan University of Technology Wuhan 430070 China Institute for Materials Research Tohoku University 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan Tech Semiconductors Ltd. Xiangyang 441021 China

Void-free β-SiC films were deposited on Si（001） substrates by laser chemical vapor deposition using hexamethyldisilane（HMDS） as the precursor. The effect of the time of introducing HMDS, i e, the substrate temperature when HMDS introduced（T_（in））, on the preferred orientation, surface microstructure and void was investigated. The orientation of the deposited SiC films changed from 〈001〉 to random to 〈111〉 with increasing T_（in）. The surface showed a layer-by-layer microstructure with voids above T_（in） ≥ 773 K, and then transformed into mosaic structure without voids at T_（in）= 298 K. The mechanism of the elimination of voids was discussed. At T_（in） =298 K, Si surface can be covered by an ultrathin SiC film, which inhibits the out-diffusion of Si atoms from substrate and prohibites the formation of the voids.

关键词： voids HMDS β-SiC laser CVD

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Continuous Modulation of Electrocatalytic Oxygen Reduction Activities of Single-Atom Catalysts throughp-nJunction Rectification

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Angewandte Chemie 2022年第5期135卷

作者： Dr. Zechao Zhuang Lixue Xia Jiazhao Huang Dr. Peng Zhu Dr. Yong Li Dr. Chenliang Ye Prof. Minggang Xia Ruohan Yu Zhiquan Lang Jiexin Zhu Prof. Lirong Zheng Prof. Yu Wang Prof. Tianyou Zhai Prof. Yan Zhao Prof. Shiqiang Wei Prof. Jun Li Prof. Dingsheng Wang Prof. Yadong Li Department of Chemistry Tsinghua University Beijing 100084 China State Key Laboratory of Silicate Materials for Architectures International School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Material Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China Institute of Applied and Physical Chemistry and Center for Environmental Research and Sustainable Technology University of Bremen 28359 Bremen Germany Department of Photoelectronic Information Science and Engineering School of Science Xi'an Jiaotong University Xi'an 710049 China Nanostructure Research Centre Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201204 China The Institute of Technological Sciences Wuhan University Wuhan 430072 China National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 China

Fine-tuning single-atom catalysts (SACs) to surpass their activity limit remains challenging at their atomic scale. Herein, we exploit p -type semiconducting character of SACs having a metal center coordinated to nitrogen donors (MeN x ) and rectify their local charge density by an n -type semiconductor support. With iron phthalocyanine (FePc) as a model SAC, introducing an n -type gallium monosulfide that features a low work function generates a space-charged region across the junction interface, and causes distortion of the FeN 4 moiety and spin-state transition in the Fe II center. This catalyst shows an over two-fold higher specific oxygen-reduction activity than that of pristine FePc. We further employ three other n -type metal chalcogenides of varying work function as supports, and discover a linear correlation between the activities of the supported FeN 4 and the rectification degrees, which clearly indicates that SACs can be continuously tuned by this rectification strategy.

关键词： Diode Rectification Oxygen Reduction Reaction Single-Atom Catalysis Two-Dimensional Metal Chalcogenide p-n Junction

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Protein-directed hierarchical porous Mn2O3 microcubes for high performance lithium-ion batteries

Protein-directed hierarchical porous Mn2O3 microcubes for hi...

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中国化学会第三届中国能源材料化学研讨会

作者： Liang Wu Yu Li Bao-Lian Su State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Laboratory of Inorganic Materials Chemistry (CMI) University of Namur

Manganese oxides are believed to be the most promising alternative anode materials for next generation LIBs,owing to their high specific theoretical capacity,low cost,and environmentally benign *** the manganese oxides,MnO has been attracted great attention due to low operating potentials（average charge and discharge voltages of 1.2 and 0.5 V versus Li/Li+,respectively）,

关键词： Protein-directed hierarchical porous Mn2O3 microcubes for high performance lithium-ion batteries

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Medical Additive Manufacturing: From a Frontier technology to the Research and Development of Products

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Engineering 2020年第11期6卷 1217-1221页

作者： Guixing Qiu Wenjiang Ding Wei Tian Ling Qin Yu Zhao Lianmeng Zhang Jian Lu Daijie Chen Guangyi Yuan Chengtie Wu Bingheng Lu Ruxu Du Jimin Chen Mo Elbestawi Zhongwei Gu Dichen Li Wei Sun Yuanjin Zhao Jie He Dadi Jin Bin Liu Kai Zhang Jianmo Li Kam WLeong Dewei Zhao Dingjun Hao Yingfang Ao Xuliang Deng Huilin Yang ShaoKeh Hsu Yingqi Chen Long Li Jianping Fan Guohui Nie Yun Chen Hui Zeng Wei Chen Yuxiao Lai Department of Orthopedics Peking Union Medical College HospitalChinese Academy of Medical Science 8 Peking Union Medical CollegeBejjing 100730.China National Engineering Research Center of Light Alloys Net Forming&State Key Laboratony of Metal Matrix Composite Shanghai Jiao Tong UniversityShanghai 200240China Notional Engineering Research Center of Mg Materials and Applicarions and School of Materials Science 8r Engineering.Shanghai Jlao Tong University Shanghai 200240China Department of Spine Surgery Beijing Jishuitan HospitalBeijing 100035China Center for Troanslational Medicine Research and Development Institute of Biomedical and Health EngineeringShenzhen Insitute of Advanced Technology.Chinese Academy of SciencesShenzhen 518055China Guangdong Engineering Laboratony of Biomaterials Additive Manufacturing Guangdong 518055China Musculoskeletal Research Laboratory of the Department of Orthopedics 8 Traumatology and Innovative Orthopedic Biomaterial and Drug Translational Research Laboratory Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong 999077.China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Center for Advanced Structural Materials City University of Hong Kong Shenzhen Research InstiuteShenzhen 518057.China Hong Kong Branch of National Precious Metals Material Engineering Research Center Department of Material Science and EngineeringCity Untiversity of Hong KongHong Kong 999077.China Department of Mechanical Engineering ity Untiversity of Hong Kong.Hong Kong 9977 China School of Pharmacy.Shanghai Jiao Tong University Shanghai 200240China China State Instute of Pharmaceutical Industry Shanghai Institute of Pharmaceutical IndustryShonghai 201203China Shanghai Innovation Instinute for Materials Shanghai 200444.China State Key Laboratory of High-Performance Ceramies and Superfine Microstructure Shanghai Institute of CeramicsChinese Acadermy 0f SciencesShanghai 200050Ch

*** and development(R&D)and the challenges of raw materials for medical additive manufacturing Raw materials for medical additive manufacturing have a wide range of commonalities that are also seen in many other fields,making them an important basis in the field of three-dimensional(3D)*** and challenges related to material types,powder properties,formability,viscoelasticity,and so forth also share common *** example,many metal materials are used in the field of aviation,while metals,polymers,and inorganic materials are used in the field of *** most widely used materials in biomedicine are *** homogeneous and non-homogeneous composites are also available for 3D printing,and impose an additional challenge in additive manufacturing;the use of heterogeneous composites in 3D printing is particularly challenging.

关键词： composites printing additive

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Novel Role of ER Stress and Mitochondria Stress in Serum-deprivation Induced Apoptosis of Rat Mesenchymal Stem Cells

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Current Medical Science 2018年第2期38卷 229-235页

作者： Tong QIU Yan-yan HE Xiao ZHANG Xiao-lin MA State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Biomedical Material and Engineering Center Wuhan University of Technology Wuhan 430070 China School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Biomedical Materials and Engineering Research Center of Hubei Province Wuhan University of Technology Wuhan 430070 China International School of Materials Science and Engineering Wuhan University of Techonology Wuhan 430070 China Hubei Key Laboratory of Purification and Application of Plant Anti-cancer Active Ingredients Hubei University of Education Wuhan 430205 China

The poor survival of mesenchymal stem cells （MSCs） compromises the efficacy of stem cell therapy. Growth factor deprivation is one of the important factors that have challenged the survival of donor MSCs in cell therapy. In this study, the aim was to evaluate the effect of serum deprivation on the cell death of MSCs and to investigate the underlying mechanisms. Apoptosis of MSCs was evaluated with Hoechst 33342/PI staining. Signaling pathways involved in serumdeprivation induced apoptosis were analyzed using Western blotting. The results revealed that serum deprivation induced apoptosis in MSCs within 72 h of treatment. Serum deprivation was shown to lead to protein expression alterations in Bax, Bcl-2, casepase-3, casepase-8, GRP78, and CHOP during experiments. The data suggested that the mitochondria death pathway, the extrinsic apoptotic pathway and the endoplastic reticulum（ER） stress pathway were all involved in MSCs apoptosis. The increase in expression of CHOP and the simultaneous decrease in Bcl- 2 expression suggest a synergistic effect in apoptosis induction in both the mitochondrion and the ER.

关键词： mesenchymal stem cells serum deprivation mitochondria pathway endoplasmicreticulum stress synergistic effects

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H2-free Semi-hydrogenation of Butadiene by the Atomic Sieving Effect of Pd Membrane with Tree-like Pd Dendrites Array

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Angewandte Chemie 2023年第38期135卷

作者： Yong-Qing Yan Zhao Wei Prof. Zhao Wang Yao Li Wei-Hao Wang Bo Jiang Prof. Bao-Lian Su Laboratory of Living Materials the State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Wuhan 430070 Hubei China Contribution: Data curation (lead) Formal analysis (lead) Investigation (lead) Methodology (lead) Writing - original draft (lead) Writing - review & editing (supporting) Contribution: Conceptualization (equal) Data curation (equal) Formal analysis (equal) Investigation (equal) Methodology (equal) Validation (equal) Writing - original draft (equal) Writing - review & editing (equal) Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Guangdong Laboratory Xianhu Hydrogen Valley Foshan 528200 P. R. China Contribution: Conceptualization (lead) Data curation (lead) Formal analysis (lead) Funding acquisition (lead) Investigation (lead) Methodology (lead) Project administration (lead) Resources (lead) Supervision (lead) Validation (lead) Visualization (lead) Writing - original draft (lead) Writing - review & editing (lead) Contribution: Data curation (supporting) Formal analysis (supporting) Investigation (supporting) Writing - original draft (supporting) Writing - review & editing (supporting) Contribution: Data curation (supporting) Formal analysis (supporting) Investigation (supporting) Writing - original draft (supporting) Laboratory of Inorganic Materials Chemistry (CMI) University of Namur 61 rue de Bruxelles 5000 Namur Belgium

H 2 -free semi-hydrogenation at room temperature shows great advantage for replacing the thermocatalytic process in industry owing to the high energy and resource saving, however, remains great challenges. Herein, a tree-like Pd dendrites array decorated Pd membrane was constructed as the core device in an electrochemistry assisted gas-fed membrane reactor for butadiene semi-hydrogenation. It reveals that hydrogen atomic sieving effect of this Pd-based membrane under electrochemical condition was the key for semi-hydrogenation. The configuration study of Pd nanostructured membrane demonstrates that the penetration of hydrogen atoms through Pd membrane from electrochemical side to chemical side is affected by the consumption of hydrogen atom in semi-hydrogenation step. Such atomic sieving property of nanostructured Pd membrane with 5.1 times increase in catalytic active surface area brings above 14 times higher in butadiene conversion than that of bare Pd foil, with ≈90 % of butenes selectivity at butadiene conversion ≈98 % over 300 h of H 2 -free reaction under 15 mA cm −2 .

关键词： 1,3-Butadiene Pd Membrane Semi-Hydrogenation Unsaturated Hydrocarbons Water Electrolysis

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