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Hall of Fame Article: Asymmetric Surface Engineering for Janus Membranes (Adv. Mater. Interfaces 7/2020)

Advanced Materials Interfaces 2020年第7期7卷

作者： Hao‐Nan Li Jing Yang Zhi‐Kang Xu MOE Key Laboratory of Macromolecular Synthesis and Functionalization Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China College of Materials Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 310036 China

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Janus‐Membranen: Erforschung ihrer Dualität für hochentwickelte Stofftrennungen

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Angewandte Chemie 2016年第43期128卷

作者： Hao‐Cheng Yang Jingwei Hou Vicki Chen Zhi‐Kang Xu MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou China UNESCO Centre for Membrane Science and Technology School of Chemical Engineering The University of New South Wales Sydney Australien

Janus‐Membranen sind eine neue Materialklasse mit “gegensätzlichen” Seiten, die selektive und oftmals neuartige Transportcharakteristiken zeigen. In diesem Kurzaufsatz schlagen wird eine Definition der Janus‐Membran vor, die über die Definition der Asymmetrie hinausgeht, und diskutieren gängige Herstellungsmethoden. Wir beschreiben aktuelle und potenzielle Anwendungen im gerichteten Stofftransport und in der schaltbaren Permeation und geben Hinweise zur Membranoptimierung mit detaillierten Mechanismen.

关键词： Hydrophober Effekt Grenzflächen Materialwissenschaften Membranen Oberflächenchemie

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Ppr/Epdm/Poe-G-Ma/Ommt Nanocomposites with Superior Low-Temperature Toughness Based on Embedded Ommt within Compound Rubber Dispersion Phase

SSRN

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SSRN 2024年

作者： Shangguan, Yonggang Qiu, Biwei Li, Zhi Chen, Feng Shi, Jiangao Zhang, Mingyu Zheng, Qiang School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai200093 China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou310027 China East China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Shanghai200090 China School of Chemistry and Chemical Engineering Northwestern Polytechnical University Xi’an710129 China College of Materials Science & Engineering Taiyuan University of Technology Taiyuan030024 China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan030024 China

A new approach to produce polypropylene random copolymer/ethylene propylene diene monomer/polyolefin elastomers modified with maleic anhydride/organic modified nanomontmorillonite (PPR/EPDM/POE-g-MA/OMMT) nanocomposites with superior low-temperature toughness was conducted. The brittle-ductile transition temperature (Tbd) of PPR/EPDM/POE-g-MA/OMMT nanocomposites reduced from -20 °C to -40 °C. The incorporation of POE-g-MA results in the distribution of OMMT changing from the interfacial distribution into dispersed inside rubber phase and a compound rubber dispersed phase in PPR/EPDM/POE-g-MA/OMMT nanocomposites was comprised of EPDM, POE-g-MA and embedded OMMT. The synergistic effect of POE-g-MA and OMMT was considered to result from the special compound rubber dispersed phase consisting of EPDM and POE-g-MA as well embedded OMMT, which led to the reduction in space between rubber domains and the increase in internal friction and ultimately brought about the remarkable enhancement in mechanical properties. © 2024, The Authors. All rights reserved.

关键词： Rubber

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Correction: Optical and electrical effects of plasmonic nanoparticles in high-efficiency hybrid solar cells

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Physical chemistry chemical physics : PCCP 2020年第38期22卷 22116页

作者： Wei-Fei Fu Xiaoqiang Chen Xi Yang Ling Wang Ye Shi Minmin Shi Han-Ying Li Alex K-Y Jen Jun-Wu Chen Yong Cao Hong-Zheng Chen State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and Functionalization & Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 P. R. China. hzchen@***. State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and Functionalization & Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 P. R. China. hzchen@*** and Department of Materials Science and Engineering University of Washington Seattle WA 98198 USA. Institute of Polymer Optoelectronic Materials & Devices State Key Laboratory of Optoelectronic Functional Materials & Devices South China University of Technology Guangzhou 510640 P. R. China.

Correction for 'Optical and electrical effects of plasmonic nanoparticles in high-efficiency hybrid solar cells' by Wei-Fei Fu et al., Phys. Chem. Chem. Phys., 2013, 15, 17105-17111, DOI: 10.1039/C3CP52723A.

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The Second Spacer Cation Assisted Growth of a 2D Perovskite Film with Oriented Large Grain for Highly Efficient and Stable Solar Cells

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Angewandte Chemie 2019年第28期131卷

作者： Xiaomei Lian Jiehuan Chen Minchao Qin Yingzhu Zhang Shuoxun Tian Xinhui Lu Gang Wu Hongzheng Chen MOE Key Laboratory of Macromolecular Synthesis and Functionalization State Key Laboratory of Silicon Materials Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China Department of Physics The Chinese University of Hong Kong New Territories 999077 Hong Kong P. R. China

The fabrication of high‐quality film with large grains oriented along the direction of film thickness is important for 2D Ruddlesden–Popper perovskite‐based solar cells (PVSCs). High‐quality 2D BA 2 MA n −1 Pb n I 3 n +1 (BA + =butylammonium, MA + =methylammonium, n =5) perovskite films were fabricated with a grain size of over 1 μm and preferential orientation growth by introducing a second spacer cation (SSC + ) into the precursor solution. Dynamic light scattering showed that SSC + addition can induce aggregation in the precursor solution. The precursor aggregates are favorable for the formation of large crystal grains by inducing nucleation and decreasing the nucleation sites. Applying phenylethylammonium as SSC + , the optimized inverted planar PVSCs presented a maximum PCE of 14.09 %, which is the highest value of the 2D BA 2 MA n −1 Pb n I 3 n +1 ( n =5) PVSCs. The unsealed device shows good moisture stability by maintaining around 90 % of its initially efficiency after 1000 h exposure to air (Hr=25±5 %).

关键词： Energieumwandlung Große Kristallkörner Precursor-Aggregation 2D-Perowskit-Solarzellen

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A Stable and Conductive Metallophthalocyanine Framework for Electrocatalytic Carbon Dioxide Reduction in Water

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Angewandte Chemie 2020年第38期132卷

作者： Huang N. Lee K.H. Yue Y. Xu X. Irle S. Jiang Q. Jiang D. Department of Chemistry Faculty of Science National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore MOE Key Laboratory of Macromolecular Synthesis and Functionalization State Key Laboratory of Silicon Materials Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China Bredesen Centre for Interdisciplinary Research and Graduate Education University of Tennessee Knoxville TN 37996 United States Computational Sciences and Engineering Division & Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37831 United States Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 China

Transformation of carbon dioxide to high value-added chemicals becomes a significant challenge for clean energy studies. Here a stable and conductive covalent organic framework was developed for electrocatalytic carbon dioxide reduction to carbon monoxide in aqueous solution. The cobalt(II) phthalocyanine catalysts are topologically connected via robust phenazine linkage into a two-dimensional tetragonal framework that is stable under boiling water, acid, or base conditions. The 2D lattice enables full π conjugation along x and y directions as well as π conduction along the z axis across the π columns. With these structural features, the electrocatalytic framework exhibits a faradaic efficiency of 96 %, an exceptional turnover number up to 320 000, and a long-term turnover frequency of 11 412 hour−1, which is a 32-fold improvement over molecular catalyst. The combination of catalytic activity, selectivity, efficiency, and durability is desirable for clean energy production. © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

关键词： 2D polymers CO2 reduction covalent organic frameworks electrocatalysis π conjugation

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Correction: Highly efficient and stable blue polymer light emitting diodes based on polysilafluorenes with pendent hole transporting groups

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Journal of Materials Chemistry C 2016年第5期4卷 1126-1126页

作者： Guangrong Jin Lianpeng Xia Zhe Liu Hong Lin Jun Ling Hongbin Wu Lintao Hou Yueqi Mo College of Materials Science and Engineering South China University of Technology Guangzhou 510640 China Siyuan Laboratory Department of Physics Jinan University Guangzhou 510632 China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China

Correction for ‘Highly efficient and stable blue polymer light emitting diodes based on polysilafluorenes with pendent hole transporting groups’ by Guangrong Jin et al., J. Mater. Chem. C, 2016, DOI: 10.1039/c5tc036...

Correction for ‘Highly efficient and stable blue polymer light emitting diodes based on polysilafluorenes with pendent hole transporting groups’ by Guangrong Jin et al., J. Mater. Chem. C, 2016, DOI: 10.1039/c5tc03665h.

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A Binary Silicon-Centered Organoboron Catalyst with Superior Performance to That of Its Bifunctional Analogue

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Angewandte Chemie 2023年第48期135卷

作者： Cheng-Kai Xu Guan-Wen Yang Chenjie Lu Prof. Dr. Guang-Peng Wu MOE Key Laboratory of Macromolecular Synthesis and Functionalization Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province Department of Polymer Science and Engineering Zhejiang University Yuhangtang Road 866 Hangzhou 310058 China College of Material Chemistry and Chemical Engineering Key Laboratory of Organosilicon Chemistry and Material Technology Ministry of Education Hangzhou Normal University Hangzhou 311121 China

This work reported that a silicon-centered alkyl borane/ammonium salt binary (two-component) catalyst exhibits much higher activity than its bifunctional analogue (one-component) for the ring-opening polymerization of propylene oxide, showing 7.3 times the activity of its bifunctional analogue at a low catalyst loading of 0.01 mol %, and even 15.3 times the activity at an extremely low loading of 0.002 mol %. By using 19 F NMR spectroscopy, control experiments, and theoretical calculation we discovered that the central silicon atom displays appropriate electron density and a larger intramolecular cavity, which is useful to co-activate the monomer and to deliver propagating chains, thus leading to a better intramolecular synergic effect than its bifunctional analogue. A unique two-pathway initiation mode was proposed to explain the unusual high activity of the binary catalytic system. This study breaks the traditional impression of the binary Lewis acid/nucleophilic catalyst with poor activity because of the increase in entropy.

关键词： Boron Catalysts Ethers Polymerization Silicon

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Dual-Emissive Platinum(II) Metallacage with a Sensitive Oxygen Response for Imaging of Hypoxia and Imaging-Guided Chemotherapy

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Angewandte Chemie 2020年第45期132卷

作者： Zhu H. Li Q. Shi B. Ge F. Liu Y. Mao Z. Wang S. Yu G. Huang F. Stang P.J. State Key Laboratory of Chemical Engineering Center for Chemistry of High-Performance & Novel Materials Department of Chemistry Zhejiang University Hangzhou 310027 China Department of Chemistry University of Utah Salt Lake City UT 84112 United States College of Pharmaceutical Science Zhejiang University Hangzhou 310058 China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China School of Life Sciences Tianjin University and Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology Tianjin 300072 China Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou 450001 China

Imaging of hypoxia in vivo helps with accurate cancer diagnosis and evaluation of therapeutic outcomes. A PtII metallacage with oxygen-responsive red phosphorescence and steady fluorescence for in vivo hypoxia imaging and chemotherapy is reported. The therapeutic agent and diagnostic probe were integrated into the metallacage through heteroligation-directed self-assembly. Nanoformulation by encapsulating the metallacage into nanoparticles greatly enhanced its stability the in physiological environment, rendering biomedical applications feasible. Apart from enhanced red phosphorescence upon hypoxia, the ratio between red and blue emissions, which only varies with intracellular oxygen level, provides a more precise standard for hypoxia imaging and detection. Moreover, in vivo explorations demonstrate the promising potential applications of the metallacage-loaded nanoparticles as theranostic agents for tumor hypoxia imaging and chemotherapy. © 2020 Wiley-VCH GmbH

关键词： hypoxia imaging metallacages platinum self-assembly supramolecular chemistry

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Anomalous Structural Transformation of Cu(I) Clusters into Multifunctional CuAg Nanoclusters

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Angewandte Chemie 2024年第36期136卷

作者： Yuqing Yao Wei Hao Jin Tang Kristin Kirschbaum Christopher G. Gianopoulos An Ren Liang Ma Letian Zheng Hanying Li Qi Li Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China Department of Chemistry and Biochemistry University of Toledo Toledo Ohio 43606 United States The State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical Engineering Zhejiang University Hangzhou 310027 China

We report an anomalous structural transformation of a Cu(I) cluster into two different types of copper-silver (CuAg) alloy nanoclusters. Different from previous reports, we demonstrate that under specifically designed reaction conditions, the Ag-doping could induce a substantial growth of the starting Cu 15 and a Ag 13 Cu 20 nanocluster was obtained via the unexpected insertion of an Ag 13 kernel inside the Cu(I)-S shell. Ag 13 Cu 20 demonstrates high activity to initiate the photopolymerization of previously hard-to-print inorganic polymers in 3D laser microprinting. Interestingly, a slight modification of the reaction condition leads to the formation of another Ag 18-x Cu x S (8≤x) nanocluster templated by a central S 2− anion, which possesses a unique electronic structure compared to conventional template-free CuAg nanoclusters. Overall, this work unveils the intriguing doping chemistry of Cu clusters, as well as their capability to create different types of alloy nanoclusters with previously unobtainable structures and multifunctionality.

关键词： nanocluster doping transformation 3D laser printing

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