检索结果-内蒙古大学图书馆

Large-Area Crystalline Zeolitic Imidazolate Framework Thin Films

Angewandte Chemie 2021年第25期133卷

作者： Dr. Zhi Chen Dr. Rui Wang Dr. Tao Ma Dr. Jin-Long Wang Dr. Yu Duan Dr. Zhi-Zhan Dai Jie Xu Hui-Juan Wang Dr. Jiayin Yuan Prof. Hai-Long Jiang Prof. Yue-Wei Yin Prof. Xiao-Guang Li Prof. Min-Rui Gao Prof. Shu-Hong Yu Division of Nanomaterials & Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Institute of Energy Hefei Comprehensive National Science Center CAS Center for Excellence in Nanoscience Institute of Biomimetic Materials & Chemistry Anhui Engineering Laboratory of Biomimetic Materials Department of Chemistry University of Science and Technology of China Hefei 230026 China Shenzhen Key Laboratory for Functional Polymer College of Chemistry and Environment Engineering Shenzhen University Shenzhen Guangdong 518060 China Hefei National Laboratory for Physical Sciences at the Microscale Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics University of Science and Technology of China Hefei 230026 China Institute of Functional Nano and Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 China Experimental Center of Engineering and Material Science University of Science and Technology of China Hefei 230026 China Department of Materials and Environmental Chemistry Stockholm University 10691 Stockholm Sweden Collaborative Innovation Center of Advanced Microstructures Nanjing 210093 China

We report that continuous MOF films with highly controlled thickness (from 44 to 5100 nm) can be deposited over length scales greater than 80 centimeters by a facile, fast, and cost-effective spray-coating method. Such success relies on our discovery of unprecedented perfectly dispersed colloidal solutions consisting of amorphous MOF nanoparticles, which we adopted as precursors that readily converted to the crystalline films upon low-temperature in situ heating. The colloidal solutions allow for the fabrication of compact and uniform MOF films on a great deal of substrates such as fluorine-doped tin oxide, glass, SiO 2 , Al 2 O 3 , Si, Cu, and even flexible polycarbonate, widening their technological applications where substrates are essential. Despite the present work focuses on the fabrication of uniform cobalt-(2-methylimidazole) 2 and zinc-(2-methylimidazole) 2 films, our findings mark a great possibility in producing other high-quality MOF thin films on a large scale.

关键词： crystallization metal–organic frameworks thin films ZIF-67

来源：评论

学校读者我要写书评

暂无评论

Inhibition of the fibrillation of highly amyloidogenic human calcitonin by cucurbituril with improved bioactivity

引用

Acta biomaterialia 2018年 78卷 178-188页

作者： Hui Shang Anna Zhou Jian Jiang Yanpeng Liu Jing Xie Sheyu Li Yantao Chen Xiaofeng Zhu Hong Tan Jianshu Li Department of Biomedical Polymers and Artificial Organs College of Polymer Science and Engineering Sichuan University Chengdu 610065 China. College of Life Sciences Sichuan University Chengdu 610065 China. Department of Endocrinology and Metabolism West China Hospital Sichuan University Chengdu 610065 China. Shenzhen Key Laboratory of Functional Polymer College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 China. Electronic address: ytchen@***. College of Life Sciences Sichuan University Chengdu 610065 China. Electronic address: zhuxiaofeng@***. Department of Biomedical Polymers and Artificial Organs College of Polymer Science and Engineering Sichuan University Chengdu 610065 China State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China. Electronic address: jianshu_li@***.

Protein/peptide fibrillation is an important challenge for biotechnological drug development. Salmon calcitonin (sCT) is currently used in the clinical treatment of bone-related diseases such as osteoporosis and hypercalcemia, but it still has the risk of immune responses. Although human calcitonin (hCT) would be a better choice in terms of immunogenicity, it has a strong tendency to irreversibly aggregate in aqueous solutions and form long amyloid fibrils, which significantly reduces its bioavailability and therapeutic potency. Here, we demonstrate that cucurbit[7]uril (CB[7]) can inhibit hCT fibrillation by supramolecular interaction with its aromatic groups (affinity: Phe16 > Tyr12 > Phe19 > Phe22). The hCT-CB[7] complex exhibits low cytotoxicity, even promotes osteoblast proliferation and osteogenic capacity of MC3T3 cells. Meanwhile the hCT-CB[7] complexes shows higher bioactivity compared to hCT in reducing blood calcium levels in rats, and also decreases the immunogenicity of hCT. These results suggest that CB[7] has the potential to improve the therapeutic potency of amyloidogenic protein/peptide drugs such as hCT.

关键词： Amyloid beta-peptides Cucurbit[7]uril Human calcitonin Inhibitor Supramolecular chemistry

来源：评论

学校读者我要写书评

暂无评论

Metallo-Helicoid with Double Rims: polymerization Followed by Folding by Intramolecular Coordination

引用

Angewandte Chemie 2020年第3期133卷

作者： Dr. Guang-Qiang Yin Sneha Kandapal Chung-Hao Liu Dr. Heng Wang Dr. Jianxiang Huang Shu-Ting Jiang Tan Ji Yu Yan Sandra Khalife Dr. Ruhong Zhou Dr. Libin Ye Dr. Bingqian Xu Dr. Hai-Bo Yang Dr. Mu-Ping Nieh Dr. Xiaopeng Li College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518055 China Single Molecule Study Laboratory College of Engineering and Nanoscale Science and Engineering Center University of Georgia Athens GA 30602 USA Department of Chemical and Biomolecular Engineering University of Connecticut Storrs CT 06269 USA Institute of Quantitative Biology Zhejiang University Hangzhou Zhejiang 310027 China Shanghai Key Laboratory of Green Chemistry and Chemical Processes Department of Chemistry East China Normal University Shanghai 200062 China Department of Chemistry University of South Florida Tampa FL 33620 USA Department of Cell Biology Microbiology and Molecular Biology University of South Florida Tampa FL 33620 USA Polymer Program Institute of Material Science University of Connecticut Storrs CT 06269 USA

In this study, we established a feasible strategy to construct a new type of metallo-polymer with helicoidal structure through the combination of covalent polymerization and intramolecular coordination-driven self-assembly. In the design, a tetratopic monomer ( M ) was prepared with two terminal alkynes in the outer rim for polymerization, and two terpyridines (TPYs) in the inner rim for subsequent folding by selective intramolecular coordination. Then, the linear covalent polymer ( P ) was synthesized by polymerization of M via Glaser-Hay homocoupling reaction. Finally, intramolecular coordination interactions between TPYs and Zn(II) folded the backbone of P into a right- or left-handed metallo-helicoid ( H ) with double rims. Owing to multiple positive charges on the inner rim of helicoid, double-stranded DNA molecules (dsDNA) could interact with H through electrostatic interactions. Remarkably, dsDNA allowed exclusive formation of H with right handedness by means of chiral induction.

关键词： coordination-driven self-assembly helicoid metallo-polymers terpyridine tetraphenylethylene

来源：评论

学校读者我要写书评

暂无评论

MXenes based nano-heterojunctions and composites for advanced photocatalytic environmental detoxification and energy conversion: A review

引用

Chemosphere 2022年第PT 1期291卷 132923页

作者： Sunil Kumar Sharma Amit Kumar Gaurav Sharma Dai-Viet N Vo Alberto García-Peñas Omid Moradi Mika Sillanpää School of Advance Chemical Sciences Shoolini University Solan Himachal Pradesh India 173229. College of Materials Science and Engineering Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials Nanshan District Key Laboratory for Biopolymers and Safety Evaluation Shenzhen University Shenzhen 518060 PR China International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS) Shoolini University India 173229 School of Science and Technology Glocal University Saharanpur India. Electronic address: mittuchem83@***. International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS) Shoolini University India 173229. Electronic address: gaurav8777@***. Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN) Nguyen Tat Thanh University 300A Nguyen Tat Thanh District 4 Ho Chi Minh City 755414 Viet Nam. University Carlos III of Madrid Av. de la Universidad 3028911 Leganés Madrid Spain. Department of Chemistry Shahr-e-Qods Branch Islamic Azad University Tehran Iran. Environmental Engineering and Management Research Group Ton Duc Thang University Ho Chi Minh City Viet Nam Faculty of Environment and Labour Safety Ton Duc Thang University Ho Chi Minh City Viet Nam. Electronic address: mika.sillanpaa@tdtu.edu.vn.

Extensive research is being done to develop multifunctional advanced new materials for high performance photocatalytic applications in the field of energy production and environmental detoxification, MXenes have emerged as promising materials for enhancing photocatalytic performance owing to their excellent mechanical properties, appropriate Fermi levels, and adjustability of chemical composition. Numerous experimental and theoretical research works implied that the dimensions of MXenes have a significant impact on their performance. For photocatalysis to thrive in the future, we must understand the current state of the art for MXene in different dimensions. Using MXene co-catalysts in widely used in photocatalytic applications such as CO reduction, hydrogen production and organic pollutant oxidation, this study focuses on the most recent developments in MXenes based materials, structural modifications, innovations in reaction and material engineering. It has been reported that using 5 mg of CdS-MoS-MXene researchers were able to generate as high as 9679 μmol/g/h hydrogen under visible light. The MXenes based heterojunction photocatalyst CoO/MXene was utilized to degrade 95% bisphenol A micro-pollutant in just 7 min. Numerous novel materials, their preparations and performances have been discussed. Depending upon the nature of MXene-based materials, the synthesis techniques and photocatalytic mechanism of MXenes as co-catalyst are also summarized. Finally, some final thoughts and prospects for developing highly efficient MXene-based photocatalysts are provided which will indeed motivate researchers to design novel hybrid materials based on MXenes for sustainable solutions to energy and pollution issues.

关键词： Energy conversion Hazardous pollutants MXenes Photocatalysis Water pollution

来源：评论

学校读者我要写书评

暂无评论

Competition between delamination and fracture in multiple peeling problems

arXiv

引用

arXiv 2019年

作者： Brely, Lucas Bosia, Federico Dhinojwala, Ali Pugno, Nicola M. Department of Physics and "Nanostructured Interfaces and Surfaces" Inter-Departmental Centre Università di Torino Via P. Giuria 1 Torino10125 Italy Department of Polymer Science University of Akron AkronOH44325-3909 United States Laboratory of Bio-Inspired & Graphene Nanomechanics Department of Civil Environmental and Mechanical Engineering Università di Trento via Mesiano 77 TrentoI-38123 Italy School of Engineering and Materials Science Queen Mary University of London Mile End Road LondonE1 4NS KET Labs Edoardo Amaldi Foundation Via del Politecnico snc Rome00133 Italy

Adhesive attachment systems consisting of multiple tapes or strands are commonly found in nature, for example in spider web anchorages or in mussel byssal threads, and their structure has been found to be ingeniously architected in order to optimize mechanical properties, in particular to maximize dissipated energy before full detachment. These properties emerge from the complex interplay between mechanical and geometric parameters, including tape stiffness, adhesive energy, attached and detached lengths and peeling angles, which determine the occurrence of three main mechanisms: elastic deformation, interface delamination and tape fracture. In this paper, we introduce a formalism to evaluate the mechanical performance of multiple tape attachments in different parameter ranges, allowing to predict the corresponding detachment behaviour. We also introduce a numerical model to simulate the complex multiple peeling behaviour of complex structures, illustrating its predictions in the case of the staple-pin architecture. We expect the presented formalism and numerical model to provide important tools for the design of bioinspired adhesive systems with tunable or optimized detachment properties. Copyright © 2019, The Authors. All rights reserved.

关键词： Fracture

来源：评论

学校读者我要写书评

暂无评论

Double-Atom Catalysts: “More is Different:” Synergistic Effect and Structural engineering in Double-Atom Catalysts (Adv. Funct. Mater. 3/2021)

引用

Advanced Functional Materials 2021年第3期31卷

作者： Yiran Ying Xin Luo Jinli Qiao Haitao Huang Department of Applied Physics and Research Institute for Smart Energy The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong P. R. China State Key Laboratory of Optoelectronic Materials and Technologies Centre for Physical Mechanics and Biophysics School of Physics Sun Yat-sen University Guangzhou 510275 P. R. China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Environmental Science and Engineering Donghua University 2999 Renmin North Road Shanghai 201620 P. R. China

来源：评论

学校读者我要写书评

暂无评论

Laccase based de-inking of mixed office waste and evaluation of its impact on physico-optical properties of recycled fiber

引用

environmental Sustainability 2018年第3期1卷 233-244页

作者： Shankar, Shiv Shikha Bhan, Chandra Chandra, Rajesh Tyagi, Sanjay Department of Environmental Science School for Environmental Sciences Babasaheb Bhimrao Ambedkar University (A Central University) Lucknow India Department of Polymer and Process Engineering Indian Institute of Technology (I.I.T.) Roorkee IIT Roorkee Campus Saharanpur India Paper Testing Division Central Pulp and Paper Research Institute Saharanpur Saharanpur India

The de-inking ability of the crude laccase (benzenediol: oxygen oxidoreductase, EC 1.10.3.2) produced by a white rot fungus Peniophora sp. (NFCCI-2131) was tested using mixed office waste pa...

The de-inking ability of the crude laccase (benzenediol: oxygen oxidoreductase, EC 1.10.3.2) produced by a white rot fungus Peniophora sp. (NFCCI-2131) was tested using mixed office waste paper. In addition, the impact on physical and optical properties of the de-inked pulp, and the chemical load of the effluent generated during laccase based de-inking process was also analyzed. In the present study, 2.5 U/ml laccase was produced by the fungus under submerged culture conditions. Laccase (10 U/g of air dried pulp) was found to improve the tensile strength of recycled pulp by 1.7-fold, de-inking efficiency by 1.5-fold, opacity by 3.84%, and brightness by 5.83%. Scanning electron microscopy analysis revealed less rupturing of cellulose fibers and increased detachment of ink particles from the surface of the fibers in comparison to chemical de-inking. Fourier-transform infrared spectroscopy analysis of laccase treated pulp revealed degradation of the guaiacyl group and a high degree of deformation in methyl group of lignin. The biochemical and chemical oxygen demand (BOD and COD) were found to be reduced by 52 and 36% respectively, in the effluent generated after crude laccase based de-inking of mixed office waste.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Double-Cable Conjugated polymers with Pendent Near-Infrared Electron Acceptors for Single-Component Organic Solar Cells

引用

Angewandte Chemie 2022年第35期134卷

作者： Shijie Liang Baiqiao Liu Dr. Safakath Karuthedath Jing Wang Dr. Yakun He Wen Liang Tan Hao Li Prof. Yunhua Xu Prof. Ning Li Prof. Jianhui Hou Prof. Zheng Tang Prof. Frédéric Laquai Prof. Christopher R. McNeill Prof. Christoph J. Brabec Prof. Weiwei Li Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China Contribution: Data curation (lead) Formal analysis (lead) Investigation (equal) Writing - original draft (supporting) Writing - review & editing (supporting) Department of Chemistry School of Science Beijing Jiaotong University Beijing 100044 P. R. China KAUST Solar Center (KSC) Physical Sciences and Engineering Division (PSE) Material Science and Engineering Program (MSE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Kingdom of Saudi Arabia Contribution: Data curation (supporting) Formal analysis (supporting) Investigation (supporting) Writing - original draft (supporting) Writing - review & editing (supporting) Center for Advanced Low-dimension Materials College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China Contribution: Data curation (supporting) Formal analysis (supporting) Investigation (supporting) Methodology (supporting) Writing - review & editing (supporting) Institute of Materials for Electronics and Energy Technology (i-MEET) Friedrich-Alexander-Universität Erlangen-Nürnberg Martensstrasse 7 91058 Erlangen Germany Contribution: Data curation (supporting) Formal analysis (supporting) Investigation (supporting) Methodology (supporting) Writing - original draft (supporting) Writing - review & editing (supporting) Department of Materials Science and Engineering Monash University Wellington Road Clayton Victoria 3800 Australia State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China Contribution: Data curation (supporting) Formal analysis (supporting) Writing - review & editing (supporting) Contribution: Funding acquisition (supporting) Writing - review & editing (supportin

Double-cable conjugated polymers with near-infrared (NIR) electron acceptors are synthesized for use in single-component organic solar cells (SCOSCs). Through the development of a judicious synthetic pathway, the highly sensitive nature of the 2-(3-oxo-2,3-dihydroinden-1-ylidene)malononitrile (IC)-based electron acceptors in basic and protonic solvents is overcome. In addition, an asymmetric design motif is adopted to optimize the packing of donor and acceptor segments, enhancing charge separation efficiency. As such, the new double-cable polymers are successfully applied in SCOSCs, providing an efficiency of over 10 % with a broad photo response from 300 to 850 nm and exhibiting excellent thermal/light stability. These results demonstrate the powerful design of NIR-acceptor-based double-cable polymers and will enable SCOSCs to enter a new stage.

关键词： Double-Cable Conjugated polymers Electron Acceptors Near Infrared Single Component Solar Cells

来源：评论

学校读者我要写书评

暂无评论

Charge Transport: Enhanced Vertical Charge Transport of Homo‐ and Blended Semiconducting polymers by Nanoconfinement (Adv. Mater. 10/2020)

引用

Advanced Materials 2020年第10期32卷

作者： Jongkuk Ko Youngkeol Kim Jin Soo Kang Rüdiger Berger Hyunsik Yoon Kookheon Char The National Creative Research Initiative Center for Intelligent Hybrids The WCU Program of Chemical Convergence for Energy and Environment School of Chemical and Biological Engineering Seoul National University Seoul 08826 Korea Research Laboratory of Electronics Massachusetts Institute of Technology Cambridge MA 02139 USA Max Planck Institute for Polymer Research Ackermannweg 10 Mainz D‐55128 Germany Department of Chemical and Biomolecular Engineering Seoul National University of Science and Technology Seoul 01811 Korea

来源：评论

学校读者我要写书评

暂无评论

Sodium-Ion Batteries: In Situ Fabrication of Branched TiO2/C Nanofibers as Binder-Free and Free-Standing Anodes for High-Performance Sodium-Ion Batteries (Small 30/2019)

引用

Small 2019年第30期15卷

作者： Ling Wang Guorui Yang Jianan Wang Silan Wang Caiyun Wang Shengjie Peng Wei Yan Seeram Ramakrishna Department of Environmental Science & Engineering State Key of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 China ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute University of Wollongong New South Wales 2522 Australia Department of Mechanical Engineering National University of Singapore Singapore 117574 Singapore

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：