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Book review of“Enzyme engineering:Selective catalysts for applications in biotechnology,organic chemistry,and life science”

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绿色合成与催化(英文) 2023年第2期4卷 77-77页

作者： Manfred T.Reetz Zhoutong Sun Ge Qu Tianjin institute of Industrial Biotechnology Chinese Academy of SciencesTianjin 300308China Biocatalysis Section Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 1Mülheiman der Ruhr 45470Germany

This book[1]begins with an introductory chapter in which the history of directed enzyme evolution is briefly presented and the different gene mutagenesis techniques are outlined,followed by a comprehensive chapter des... 详细信息

关键词： Directed evolution Rational design Enzyme engineering Methodology Biocatalysis

Highly Diastereo-and Enantioselective Synthesis of Quinuclidine Derivatives by an Iridium-Catalyzed Intramolecular Allylic Dearomatization Reaction

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CCS Chemistry 2019年第1期1卷 106-116页

作者： Lin Huang Yue Cai Hui-Jun Zhang Chao Zheng Li-Xin Dai Shu-Li You State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032China Collaborative Innovation Center of Chemical Science and Engineering TianjinChina

Asymmetric construction of quinuclidine derivatives has been realized by an iridium-catalyzed allylic dearomatization *** catalytic system,derived from[Ir(cod)Cl]2 and the Feringa ligand,tolerates a broad range of substrates.A large array of quinuclidine derivatives can be obtained under mild conditions in good to excellent yields(68%–96%),diastereoselectivity(up to>20/1 dr),and enantioselectivity(up to>99%ee).These pro-ducts feature versatile functional group diversity and can undergo diverse transformations.A model that accounts for the origin of the stereoselectivity has been proposed based on density functional theory(DFT)calculations.

关键词： asymmetric catalysis dearomatization indole iridium

Synthesis and Structure of Ferrocenol Esters

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International Journal of Organic Chemistry 2016年第2期6卷 107-116页

作者： Mikhail Denisov Aleksey Gorbunov Maksim V. Dmitriev Pavel Slepukhin Vladimir Glushkov institute of Technical Chemistry Urals Branch of the Russian Academy of Sciences Perm Russia Perm State National Research University Perm Russia I. Ya. Postovsky institute of Organic Synthesis Urals Branch of the Russian Academy of Sciences Ekaterinburg Russia Ural Federal University Ekaterinburg Russia

N-Heterocyclic carbene-catalyzed oxidative esterification of ferroceneboronic acid by aromatic and heteroaromatic aldehydes affords the new ferrocenol hetaryl and aryl esters 1 - 4, 6 - 8 and 9 - 11. The reaction take... 详细信息

关键词： Hydroxyferrocene Ferroceneboronic Acid N-Heterocyclic Carbene Esterification catalysis

Hydrogen Evolution from Water under Visible-Light Irradiation Using Keggin-Type Platinum(II)-Coordinated Phospho-, Silico-, and Germanotungstates as Co-Catalysts

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Modern Research in catalysis 2016年第4期5卷 103-129页

作者： Chika Nozaki Kato Shunsaku Suzuki Yuki Ihara Koki Aono Rie Yamashita Keisuke Kikuchi Tetsuji Okamoto Hidemitsu Uno Department of Chemistry Shizuoka University Shizuoka Japan Green Chemistry Research Division Research Institute of Green Science and Technology Shizuoka University Shizuoka Japan Industrial Research institute of Shizuoka Prefecture Shizuoka Japan Department of Chemistry and Biology Graduate School of Science and Engineering Ehime University Matsuyama Japan

The tetramethylammonium salts of diplatinum(II) complexes composed of mono-lacunary Keggin-type silico and germanotungstates, [(CH3)4N]4[α-SiW11O39{cis-Pt(NH3)2}2]·13H2O (TMA-Si-Pt) and [(CH3)4N]4[α-GeW11O39{cis-Pt(NH3)2}2]·11H2O (TMA-Ge-Pt), were synthesized and crystallized. Single crystals of a tetramethylammonium salt of Keggin-type diplatinum(II)-coordinated phosphotungstate [(CH3)4N]3[α-PW11O39{cis-Pt(NH3)2}2]×10H2O (TMA-P-Pt) were also obtained. The X-ray structural analyses revealed that the two cis-platinum(II) moieties, [cis-Pt(NH3)2]2+, were each coordinated to two oxygen atoms in a mono-vacant site of [XW11O39](12-n)- (Xn+ = Si4+, Ge4+, P5+). FTIR spectra of TMA-Si-Pt and TMA-Ge-Pt also suggested that the two platinum(II) moieties were coordinated to the vacant site of [SiW11O39]8- and [GeW11O39]8-. The 1H NMR spectra in DMSO-d6 of TMA-Si-Pt and TMA-Ge-Pt showed signals assigned to the two sets of NH3 ligands coordinated to the platinum sites. These three platinum compounds showed hydrogen evolution from aqueous triethanolamine solution under visible light irradiation (λ ≥ 400 nm) in the presence of eosin Y, α-Keggin mono-aluminum-substituted silicotungstate, and titanium dioxide. The catalytic activities were influenced by the central atoms, and TMA-P-Pt showed the highest activities among the three platinum compounds.

关键词： Polyoxometalates Diplatinum(II) Complex Hydrogen Evolution Visible Light X-Ray Crystallography

An integrated cathode with bi-functional catalytic effect for excellent-performance lithium-sulfur batteries

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Nano Research 2019年第5期12卷 1017-1024页

作者： Mengmeng Zhen Xintao Zuo Juan Wang Cheng Wang Tianjin Key Laboratory of Advanced Functional Porous Materials and Center far Electron Microscopy Institute for New Energy Materials & Low-Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300071China Tianjin Key Laboratory of Clean Energy and Pollution Control School of Energy and Environmental EngineeringHebei University of TechnologyTianjin 300401China

The high energy density of lithium-sulfur batteries (Lsbs) is mainly based on the complex redox reactions and phase *** sluggish redox kinetics and the large accumulation of soluble polysulfides in the electrolyte leads to low sulfur utilization and serious shuttle ***,an integrated sulfur cathode is constructed through a facile and large-scale *** is composed of sulfur-N,S doped bamboo like CNTs@Co3S4 (NSC@Co3S4) composites on polypropylene *** immobilized polysulfides on the NSC@Co3S4 surface are further reduced/oxidized during the discharge/charge process via the efficient bi-functional catalytic effect of NSC@Co3S4,resulting in the rapid conversion of ***,the integrated sulfur cathode delivers a high initial reversible capacity of 1,473.6 mAh·g^-1 at 0.2 C and a high specific capacity of 979 mAh·g^-1 at 1 C after 500 cycles as well as excellent cycling stability for 1,000 cycles with a high specific capacity of 362.5 mAh·g^-1 at 5 C,which are superior to reported similar host materials.

关键词： bi-fufictional catalysis polysulfides redox reaction chemical adsorption lithium-sulfur batteries

可控氧化方法制备的锰氧化物中隐藏的金属-绝缘体转变研究（英文）

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Science China Materials 2019年第4期62卷 577-585页

作者：宋创业 Iftikhar Ahmed Malik 李梦蕾张庆华王立辰王静陈荣艳郑仁奎董帅谷林段文晖南策文张金星 Department of physics Beijing Normal University Department of Physics Capital Normal University institute of physics Chinese Academy of Sciences School of Materials Science and Engineering Tsinghua University Center for Advanced Quantum Studies Beijing Normal University State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences School of Physics Southeast University Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics Tsinghua University

氧在调节复杂氧化物中的相结构和功能方面扮演着重要的角色,比如高温超导体、庞磁电阻、催化等,人们急需在这些功能氧化物中实现有效且可控的氧含量调控.在此工作中我们通过改变气体氛围温度来精确的调控氧化活性,从而实现一种新的化学... 详细信息

氧在调节复杂氧化物中的相结构和功能方面扮演着重要的角色,比如高温超导体、庞磁电阻、催化等,人们急需在这些功能氧化物中实现有效且可控的氧含量调控.在此工作中我们通过改变气体氛围温度来精确的调控氧化活性,从而实现一种新的化学辅助的高质量外延薄膜的制备方法.以钙钛矿锰氧化物La_(0.5)Sr_(0.5)MnO_3(LSMO)为例,通过调控薄膜样品中氧的化学计量比,我们首次发现了该体系中隐藏的由相竞争产生的金属-绝缘体转变.氧组分引起的Mn离子间的交换相互作用以及载流子浓度的变化可能是此相转变产生的原因,这与第一性原理计算十分符合.不同于传统的阳离子掺杂,有效的阴离子(O^(2-), S^(2-)等)调节提供了一种新的实现复杂氧化物外延薄膜中调控相结构和功能的技术手段.

关键词： oxidative-activity oxygen-content manganites hidden metal-insulator transition

基于热管理策略实现负载型铂纳米颗粒的抗烧结

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Science China Materials 2021年第8期64卷 1930-1938页

作者：王淑婷李子安杨明李宇明李然家余长春王雅君姜尧李涛刘进勋张航赵震徐春明姜桂元 State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijingBeijing 102249China Beijing National Laboratory for Condensed Matter Physics and institute of Physics Chinese Academy of SciencesBeijing 100190China institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Department of Chemical Physics School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026China

抑制催化剂在高温条件下的烧结仍是目前多相催化领域的一个巨大挑战.本文报道了高热导率六方氮化硼可作为γ-Al_(2)O_(3)负载型铂纳米粒子优异的抗烧结材料.在升温条件下,六方氮化硼的高热导率能够确保铂纳米粒子到γ-Al_(2)O_(3)的有... 详细信息

抑制催化剂在高温条件下的烧结仍是目前多相催化领域的一个巨大挑战.本文报道了高热导率六方氮化硼可作为γ-Al_(2)O_(3)负载型铂纳米粒子优异的抗烧结材料.在升温条件下,六方氮化硼的高热导率能够确保铂纳米粒子到γ-Al_(2)O_(3)的有效散热,从而实现铂纳米粒子Ostwald熟化烧结和颗粒碰撞烧结均被抑制.TiO_(2)负载的铂纳米粒子在引入六方氮化硼后,铂纳米粒子的烧结同样被抑制.本工作提出了一种基于热管理实现抗烧结的通用策略,为在多相催化中广泛应用的抗烧结材料和其结构设计提供了新的思路.

关键词：六方氮化硼铂纳米粒子 Ostwald熟化多相催化铂纳米颗粒颗粒碰撞高热导率结构设计

Access to Stereodefined Multifunctionalizedβ,γ-Unsaturated Ketones via Chemo,Regio-and Diastereoselective Copper-Catalyzed Diborylation of Cross-Conjugated Enynones

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Chinese Journal of Chemistry 2021年第3期39卷 590-596页

作者： Shuai Zhang Xinhua Duan Pengfei Li Frontier institute of Science and Technology Xi'an Jiaotong UniversityXi'anShaanxi 710054China School of Chemistry Xi'an Jiaotong UniversityXi'anShaanxi 710049China State Key Laboratory of Elemento-Organic Chemistry Nankai UniversityTianjin 300071China Xi'an Key Laboratory of Sustainable Energy Materials Chemistry Xi'an Jiaotong UniversityXi'anShaanxi 710049China

Main observation and conclusion Stereodefinedβ,γ-unsaturated carbony|compounds are important yet synthetically challenging units in natural products and *** herein is a mild,rapid copper-catalyzed diborylation reaction of cross-conjugated enynones as a step-economic and modular approach to stereodefined multifunctionalizedβ,γ-unsaturated ketones by fine control of chemo-,regio-,Z/E and *** substrate scope was examined and a possible catalytic cycle was proposed to explain the multifaceted selectivity.

关键词： Stereoselectivity β,γ-Unsaturated ketones Copper catalysis Borylation Cross-conjugated enynones

Recent Advances in the Chemistry of N-Heterocyclic-Carbene-Functionalized Metal-Nanoparticles and Their Applications

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Chinese Journal of Chemistry 2019年第1期37卷 76-87页

作者： Yuan-Yuan An Jian-Gang Yu Ying-Feng Han Key Laboratory of Synthetic and Natural Functional Molecule Chemistry College of Chemistry and Materials ScienceNorthwest UniversityXi'anShaanxi 710127China College of Chemical and Material Engineering Quzhou UniversityQuzhouZhejiang 924000China state Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002China

Metal-nanoparticles (M-NPs)have been widely applied in catalysis,imaging,sensing and *** particularly active area of this research is the modification of the surface of the nanoparticles to prevent aggregation through the coordination of ligands.N-Heterocyclic carbenes (NHCs)have emerged as suitable ligands for this purpose due to their affinity to the metals and their strongly electron donating nature.

关键词： M-NPs research nature