检索结果-内蒙古大学图书馆

Correction: Efficiently increasing the radiative rate of TADF material with metal coordination

Chemical communications (Cambridge, England) 2022年第84期58卷 11871页

作者： Xian-Bao Cai Dong Liang Mingxue Yang Xiao-Yuan Wu Can-Zhong Lu Rongmin Yu College of Chemical Engineering Fuzhou University Fuzhou 350116 P. R. China. rongminyu@***. CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China. University of Chinese Academy of Sciences Beijing 100049 China.

Correction for 'Efficiently increasing the radiative rate of TADF material with metal coordination' by Xian-Bao Cai , , 2022, , 8970-8973, https://***/10.1039/D2CC02930H.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Polyoxometalate–Organic Hybrid “Calixarenes” as Supramolecular Hosts

引用

Angewandte Chemie 2023年第4期136卷

作者： Yuan Gao Dr. Ji Guo Yuyan Lai Jiaheng Lin Junrui Liu Jianming Ji Prof. Dr. Panchao Yin Prof. Dr. Wei Wang Prof. Dr. Hongmei Zhao Prof. Dr. Guanying Chen Prof. Dr. Lei Wang Prof. Dr. Xikui Fang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China South China Advanced Institute for Soft Matter Science and Technology State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China State Key Laboratory of Information Photonics and Optical Communications School of Science Beijing University of Posts and Telecommunications Beijing 100876 China

Calixarenes are among the most useful and versatile macrocycles in supramolecular chemistry. The one thing that has not changed in the 80 years since their discovery, despite numerous derivatizations, is their fully organic, covalent scaffolds. Here, we report a new type of organic–inorganic hybrid “calixarenes” constructed by means of coordination-driven assembly. Replacing acetate ligands on the {SiW 10 Cr 2 (OAc) 2 } clusters with 5-hydroxyisophthalates allows these 95° inorganic building blocks to be linked into bowl-shaped, hybrid “calix[ n ]arenes” ( n =3, 4). With a large concave cavity, the metal–organic calix[4]arene can accommodate nanometer-sized polyoxoanions in an entropically driven process. The development of hybrid variants of calixarenes is expected to expand the scope of their physicochemical properties, guest/substrate binding, and applications on multiple fronts.

关键词： Calixarenes Host–Guest Systems Macrocycles Polyoxometalates Supramolecular Chemistry

来源：评论

学校读者我要写书评

暂无评论

Controlling disorder in host lattice by hetero-valence ion doping to manipulate luminescence in spinel solid solution phosphors

引用

Science China Chemistry 2018年第12期61卷 1624-1629页

作者： Qinqin Ma Jie Wang Wei Zheng Qian Wang Zhiheng Li Hengjiang Cong Huijun Liu Xueyuan Chen Quan Yuan Key Laboratory of Analytical Chemistry for Biology and Medicine(Ministry of Education) College of Chemistry and Molecular SciencesWuhan University CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Key Laboratory of Artificial Micro-and Nano-Structures of Ministry of Education and School of Physics and Technology Wuhan University

Phosphor materials have been rapidly developed in the past decades. Developing phosphors with desired properties including strong luminescence intensity and long lifetime has attracted widespread attention. Herein, we show that hetero-valence ion doping can serve as a potent strategy to manipulate luminescence in persistent phosphors by controlling disorder in the host lattice. Specifically, spinel phosphor Zn(Ga_(1-x)Zn_x)(Ga_(1-x)Ge_x)O_4:Cr is developed by doping ZnGa_2O_4:Cr with tetravalent Ge^(^(4+)).Compared to the original ZnGa_2O_4:Cr, the doped Zn(Ga_(1-x)Zn_x)(Ga_(1-x)Ge_x)O_4:Cr possesses significantly enhanced persistent luminescence intensity and prolonged decay time. Rietveld refinements show that Ge^(4+)enters into octahedral sites to substitute Ga^(3+), which leads to the co-substitution of Ga^(3+) by Zn^(2+) for charge compensation. The hetero-valence substitution of Ga^(3+) by Ge^(4+)and Zn^(2+) enriches the charged defects in Zn(Ga_(1-x)Zn_x)(Ga_(1-x)Ge_x)O_4:Cr, making it possible to trap large amounts of charge carriers within the defects during excitation. Electron paramagnetic resonance measurement further confirms that the amount of Cr^(3+) neighboring charged defects increases with Ge^(4+)doping. Thus charge carriers released from defects can readily combine with the neighboring Cr^(3+) to produce bright persistent luminescence after excitation ceases. The hetero-valence ion doping strategy can further be employed to develop many other phosphors and contributes to lighting, photocatalysis and bioimaging.

关键词： persistent luminescence nanoparticle defect doping

来源：评论

学校读者我要写书评

暂无评论

In situ Observation of Porosity Formation in Porous Single-crystalline TiO2Monolith for Enhanced and Stable Catalytic CO Oxidation

引用

Angewandte Chemie 2023年第12期135卷

作者： Fangyuan Cheng Jie Zhang Prof. Kui Xie Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China Advanced Energy Science and Technology Guangdong Laboratory 29 Sanxin North Road Huizhou Guangdong 116023 China University of Chinese Academy of Sciences Beijing 100049 China Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou Fujian 350108 China Key Laboratory of Design & Assembly of Functional Nanostructures Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China

Introducing pores in single crystals creates a new type of porous materials that incorporate porosity and structural coherence. Herein, we use in situ transmission electron microscopy to disclose the porosity formation by converting KTiOPO 4 (KTP) single crystals into porous single-crystalline (PSC) TiO 2 monoliths in a solid-solid transformation. The isolated crystalline nuclei of TiO 2 clusters with identical lattice orientation on KTP surface moves TiO 2 /KTP interface toward mother phase for growing PSC TiO 2 monoliths. The relative density in PSC TiO 2 monoliths dominates porosity while the macroscopic dimensions remain unchanged in the transformation. The single-crystalline nature of porous architecture stabilizes oxygen vacancy to activate lattice oxygen while the three-dimensional percolation enhances species diffusion. PSC TiO 2 monoliths with deposited Pt clusters show enhanced and stable catalytic CO oxidation in air at ∼75 °C for 200 hours of operation.

关键词： Porous single crystal TiO2 In situ TEM Solid-solid transformation CO oxidation

来源：评论

学校读者我要写书评

暂无评论

TiO2-Ti3C2 Composites with Pt Decoration as Efficient Photocatalysts for Ethylene Oxidation under Near Infrared Light Irradiation

引用

Chinese Journal of Structural Chemistry 2018年第9期37卷 1457-1469页

作者：张留贤潘晓阳王广涛龙霞易志国 College of Physics and Materials Science Henan Normal University CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences University of Chinese Academy of Sciences

Efficient utilization of solar energy is highly desirable in the field of photocatalysis. However, the near-infrared part of the solar spectrum, which constitutes about 44% of sunlight, has rarely been used. Herein, we report that the TiO2 coupled with MXene Ti3C2 nanosheets shows promising photoactivity for ethylene oxidation under near infrared light（NIR） irradiation. Moreover, the Pt nanoparticle decoration can dramatically improve the performance of TiO2–Ti3C2 nanocomposites. Within 15 minutes irradiation of the NIR light, 444 ppm of C2 H4 is completely removed over 1 wt%Pt–TiO2–Ti3C2 and the catalyst exhibits excellent stability. It is expected that our work could provide useful information for the design and synthesis of efficient and stable NIR active photocatalyst for the target applications.

关键词： MXene layered Ti3C2 plasmonic ethylene degradation NIR photocatalysis

来源：评论

学校读者我要写书评

暂无评论

Efficient Near-Infrared Luminescence in Lanthanide-Doped Vacancy-Ordered Double Perovskite Cs2ZrCl6Phosphors via Te4+Sensitization

引用

Angewandte Chemie 2022年第26期134卷

作者： Jinyue Sun Prof. Wei Zheng Prof. Ping Huang Meiran Zhang Wen Zhang Dr. Zhonghua Deng Dr. Shaohua Yu Mengyao Jin Prof. Xueyuan Chen CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials and State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China Fujian College University of Chinese Academy of Sciences Beijing 100049 China Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou Fujian 350108 China

All-inorganic lead-free perovskite-derivative metal halides have shown great promise in optoelectronics, however, it remains challenging to realize efficient near-infrared (NIR) luminescence in these materials. Herein, we report a novel strategy based on Te 4+ /Ln 3+ (Ln=Er, Nd, and Yb) co-doping to achieve efficient NIR luminescence in vacancy-ordered double perovskite Cs 2 ZrCl 6 phosphors, which are excitable by a low-cost near-ultraviolet light-emitting diode (LED) chip. Through sensitization by the spin-orbital allowed 1 S 0 → 3 P 1 transition of Te 4+ , intense and multi-wavelength NIR luminescence originating from the 4f→4f transitions of Er 3+ , Nd 3+ , and Yb 3+ was acquired, with a quantum yield of 6.1 % for the Er 3+ emission. These findings provide a general approach to achieve efficient NIR emission in lead-free metal halides through ns 2 -metal and lanthanide ion co-doping, thereby opening up a new avenue for exploring NIR-emitting perovskite derivatives towards versatile applications such as NIR-LEDs and bioimaging.

关键词： Energy Transfer Lanthanide Metal Halide Near-Infrared Luminescence Tellurium

来源：评论

学校读者我要写书评

暂无评论

Versatile drug carrier of two-dimensional supramolecular assemblies

引用

Journal of Molecular Structure 2025年 1343卷

作者： Peng, Zhong-Yu Chen, Ting Shen, Chuanqi Xu, Shaun Liu, Kuan-Guan Wang, Wei Zhuo, Zhu Cao, Ling-Yun Xu, Hao Liu, Yong-Sheng Xie, Zhaoxiong Jiang, Qiaorong Nan, Zi-Ang Huang, You-Gui CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China College of Chemistry Fuzhou University Fujian Fuzhou350108 China Xiamen Institute of Rare Earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen361021 China Fujian College University of Chinese Academy of Sciences Fujian Fuzhou350002 China Department of Chemistry University of British Columbia VancouverBCV6T1Z1 Canada State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering and Ningxia Key Laboratory for Photovoltaic Materials Ningxia University Yinchuan Ningxia750021 China College of Chemistry and Chemical Engineering Xiamen University Xiamen361005 China

This article reports three versatile drug carriers based on two-dimensional supramolecular crystal sponges of ([(H2O)ML]²⁺, M=Co, Zn, Cu), which self-assemble through hydrogen bonding and π-π stacking to form layered structures with controllable hexagonal pores. Three parent crystal sponges ([(H2O)CoL]·(ClO4)2·(H2O)6·(CH3OH) (1), [(H2O)ZnL]·(ClO4)2·(H2O)5·(CH3OH) (2), and [(H2O)CuL]·(ClO4)2·(H2O)3(CH3OH)3 (3)) were successfully synthesized via the coordination reaction between metal salt M(ClO₄)₂ and tris (2-benzimidazolylmethyl) amine ligand (L). The pore sizes and symmetries of these sponges are variable depending on the metal ions. These materials can selectively accommodate guest molecules of different sizes through hydrogen bonding, including methanol and large drug molecules such as ibuprofen (HIbu), ibuprofen methyl ester (MeOIbu), and indomethacin methyl ester (MeOInd). The accommodation of drug molecules in the cavities may alter the host layered structures. The configuration of [(H2O)CoL]²⁺ in [(H2O)CoL]·(HIbu)0.5·(ClO4)2·(H2O)1(CH3OH)1.33 (4) which accommodates HIbu is slightly different from that in 1. The structures of [(H2O)CoL]·(MeOIbu)0.5·(ClO4)2·(CH3OH)0.75 (5) and [(H2O)ZnL]·(MeOIbu)0.5·(ClO4)2·(H2O)0.5·(CH3OH) (6) that accommodate MeOIbu are almost the same to those of 1 and 2, respectively, while the stacking of the host layered structures in [(H2O)CuL]2·(MeOIbu)·(ClO4)4·(H2O)6 (7) and [(H2O)CuL]2·(MeOIbu)·(ClO4)4·(H2O)8 (8) that also accommodate MeOIbu are completely different from that of 3. Despite that the structure of [(H2O)ZnL]2·(MeOInd)·(ClO4)4·(H2O)3·(CH3OH)2 (9) which carries MeOInd is the same to that of 3, the stacking of the host layered structure of [(H2O)CuL]2·(MeOInd)·(ClO4)4·(H2O)5·(CH3OH) (10) carrying MeOInd is different from that of 3. Our results developed a new type of supramolecular self-assemblies for drug carrying and delivery, and may provide important insights into the design of supramolecular drug carriers. © 2025

关键词： Molecular recognition

来源：评论

学校读者我要写书评

暂无评论

From a Metal–Organic Square to a Robust and Regenerable Supramolecular Self-assembly for Methane Purification

引用

Angewandte Chemie 2022年第48期134卷

作者： Zhong-Min Cao Dr. Guo-Ling Li Dr. Zheng-Yi Di Dr. Cheng Chen Prof. Dr. Ling-Yi Meng Prof. Dr. Mingyan Wu Prof. Dr. Wei Wang Dr. Zhu Zhuo Prof. Dr. Xiang-Jian Kong Prof. Dr. Maochun Hong Prof. Dr. You-Gui Huang CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen Fujian 361021 China State Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China State Key Laboratory of Physical Chemistry of Solid Surfaces Xiamen University Xiamen Fujian 361005 China

Porous supramolecular assemblies constructed by noncovalent interactions are promising for adsorptive purification of methane because of their easy regeneration. However, the poor stability arising from the weak noncovalent interactions has obstructed their practical applications. Here, we report a robust and easily regenerated polyhedron-based cationic framework assembled from a metal–organic square. This material exhibits a very low affinity for CH 4 and N 2 , but captures other competing gases (e.g. C 2 H 6 , C 3 H 8 , and CO 2 ) with a moderate affinity. These results underpin highly selective separation of a range of gas mixtures that are relevant to natural gas and industrial off-gas. Dynamic breakthrough studies demonstrate its practical separation for C 2 H 6 /CH 4 , C 3 H 8 /CH 4 , CO 2 /N 2 , and CO 2 /CH 4 . Particularly, the separation time is ≈11 min g −1 for the C 2 H 6 /CH 4 (15/85 v/v) mixture and ≈49 min g −1 for the C 3 H 8 /CH 4 (15/85 v/v) mixture (under a flow of 2.0 mL min −1 ), respectively, enabling its capability for CH 4 purification from light alkanes.

关键词： Alkanes Separation CO2 Capture Metal–Organic Square Polyhedral Cavity Supramolecular assembly

来源：评论

学校读者我要写书评

暂无评论

Energy-Efficient Co-production of Benzoquinone and H2Using Waste Phenol in a Hybrid Alkali/Acid Flow Cell

引用

Angewandte Chemie 2024年第31期136卷

作者： Chengchao He Duo Pan Kai Chen Dr. Junxiang Chen Qinlong Zhang Dr. Hao Zhang Prof. Zhifang Zhang Prof. Zhenhai Wen Value-Added Utilization of Carbocoal Derivative Liquid-Shaanxi University Engineering Research Center Yulin University Yulin 719000 P. R. China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Materials and Techniques toward Hydrogen Energy Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 P. R. China Chemistry Research Laboratory University of Oxford Oxford OX1 3TA UK Shaanxi Yuanda Zhengbei Energy Technology Co. Ltd. Research and Development Department Yulin 719000 P. R. China

In both the manufacturing and chemical industries, benzoquinone is a crucial chemical product. A perfect and economical method for making benzoquinone is the electrochemical oxidation of phenol, thanks to the traditional thermal catalytic oxidation of phenol process requires high cost, serious pollution and harsh reaction conditions. Here, a unique heterostructure electrocatalyst on nickel foam (NF) consisting of nickel sulfide and nickel oxide (Ni 9 S 8 -Ni 15 O 16 /NF) was produced, and this catalyst exhibited a low overpotential (1.35 V vs. RHE) and prominent selectivity (99 %) for electrochemical phenol oxidation reaction (EOP). Ni 9 S 8 -Ni 15 O 16 /NF is beneficial for lowering the reaction energy barrier and boosting reactivity in the EOP process according to density functional theory (DFT) calculations. Additionally, an alkali/acid hybrid flow cell was successfully established by connecting Ni 9 S 8 -Ni 15 O 16 /NF and commercial RuIr/Ti in series to catalyze phenol oxidation in an alkaline medium and hydrogen evolution in an acid medium, respectively. A cell voltage of only 0.60 V was applied to produce a current density of 10 mA cm −2 . Meanwhile, the system continued to operate at 0.90 V for 12 days, showing remarkable long-term stability. The unique configuration of the acid-base hybrid flow cell electrolyzer provides valuable guidance for the efficient and environmentally friendly electrooxidation of phenol to benzoquinone.

关键词： electrocatalysis phenol oxidation acid-base hybrid flow cell electrolytic cell hydrogen evolution

来源：评论

学校读者我要写书评

暂无评论

Photo-Driven Ammonia Synthesis via a Proton-Mediated Photoelectrochemical Device

引用

Angewandte Chemie 2025年第8期137卷

作者： Wan Lin Jiajie Chen Xiang Zhang Jing Lin Fuwen Lin ShenXia Huang Prof. Yaobing Wang CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of Nanomaterials State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 Fujian P. R. China University of Chinese Academy of Sciences Beijing 100049 P. R. China Fujian College University of Chinese Academy of Sciences Fuzhou 350002 P. R. China College of Chemistry Fuzhou University Fuzhou 350116 Fujian P. R. China. Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108 Fujian P. R. China College of Chemistry and Materials Science Fujian Normal University Fuzhou 350007 China

N 2 reduction reaction (NRR) by light is an energy-saving and sustainable ammonia (NH 3 ) synthesis technology. However, it faces significant challenges, including high energy barriers of N 2 activation and unclear catalytic active sites. Herein, we propose a strategy of photo-driven ammonia synthesis via a proton-mediated photoelectrochemical device. We used redox-catalysis covalent organic framework (COF), with a redox site (−C=O) for H + reversible storage and a catalytic site (porphyrin Au) for NRR. In the proton-mediated photoelectrochemical device, the COF can successfully store e − and H + generated by hydrogen oxidation reaction, forming COF−H. Then, these stored e − and H + can be used for photo-driven NRR (108.97 umol g −1 ) under low proton concentration promoted by the H-bond network formed between −OH in COF−H and N 2 on Au, which enabled N 2 hydrogenation and NH 3 production, establishing basis for advancing artificial photosynthesis and enhancing ammonia synthesis technology.

关键词： Photo-driven ammonia synthesis Proton-mediated N2 reduction reaction Covalent organic framework Photoelectrochemical device

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：