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New Avenues for Organic Redox Materials as Sustainable Lithium-ion Battery Cathodes 有机氧化还原材料作为可持续锂离子电池阴极的新途径
Pub Date : 2022-08-24 DOI: 10.1055/s-0042-1757981
Deepak Gupta, Shilpasubhashini Gupta, A. Vlad
As the demand for electrification of means of transportation and storage of electrical energy for later use is skyrocketing, rechargeable Li-ion batteries (LIBs) are at the heart of this revolution. Acknowledging the carbon footprints, environmental concerns and cost of the commercial cathode materials, this is the high time to advocate sustainable alternatives. This review aims at establishing the potential of organic redox-active molecules as a burgeoning class of sustainable solid cathode materials for LIBs. The materials are classified according to their structural features (molecules, metallo-organic complexes, and organic/metal–organic frameworks) and electrochemical performance to lay emphasis on practical applications and bottlenecks in commercialization. However, these materials are still in early stages of development, and new frontiers have been explored in the last five years.
随着对交通工具电气化和电能存储的需求急剧增长,可充电锂离子电池(lib)是这场革命的核心。考虑到碳足迹、环境问题和商业阴极材料的成本,现在是倡导可持续替代品的时候了。本文综述了有机氧化活性分子作为一种新兴的可持续发展的锂离子电池固体正极材料的潜力。根据材料的结构特征(分子,金属有机配合物,有机/金属有机框架)和电化学性能对材料进行分类,重点关注实际应用和商业化瓶颈。然而,这些材料仍处于早期发展阶段,在过去的五年里已经探索了新的领域。
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引用次数: 2
Guest Encapsulation Scope of a Triptycene-Based Pd 2 L 4 Coordination Cage 基于三联烯的Pd2L4配位笼的客体包封范围
Pub Date : 2022-08-16 DOI: 10.1055/a-1953-0155
S. Hasegawa, Ananya Baksi, Bin Chen, G. Clever
The scope of a lantern-shaped, triptycene-based Pd2L4 coordination cage to encapsulate various carbon-rich guests was investigated. The cage was found to bind two molecules of corannulene and a variety of C60 derivatives in moderate to quantitative yields. Non-disruptive extraction of encapsulated fullerene derivative PC61BM from the cage was demonstrated by the simple addition of CS2 into an acetonitrile solution of the host-guest complex. This process can be accomplished in a layer-to-layer fashion, and thus, the recovered cage can be further utilized in a recycling process. As this self-assembled host is readily synthesized and able to transfer fullerenes and a range of its derivatives into polar organic solvents, it allows to facilitate purification, chemical modification and solid-state processing of fullerenes for a range of materials applications.
研究了灯笼形状的基于三联烯的Pd2L4配位笼包封各种富含碳的客体的范围。该笼被发现以中等到定量的产率结合两分子珊瑚烯和各种C60衍生物。通过将CS2简单添加到主-客体复合物的乙腈溶液中,证明了从笼中无破坏地提取包封的富勒烯衍生物PC61BM。这个过程可以以逐层的方式完成,因此,回收的笼子可以进一步用于回收过程。由于这种自组装主体易于合成,并且能够将富勒烯及其一系列衍生物转移到极性有机溶剂中,因此有助于富勒烯的纯化、化学改性和固态加工,用于各种材料应用。
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引用次数: 1
Broadly Applicable Synthesis of Heteroarylated Dithieno[3,2- b :2′,3′- d ]pyrroles for Advanced Organic Materials – Part 1: Conducting Electropolymers 先进有机材料中广泛应用的杂芳化二噻吩[3,2- b:2 ',3 ' - d]吡咯的合成-第1部分:导电电聚合物
Pub Date : 2022-08-12 DOI: 10.1055/a-1972-5895
Christoph Lorenz, Astrid Vogt, J. Millán, E. Mena‐Osteritz, P. Bäuerle
Herein, a novel and versatile method for the synthesis of N-heteroarylated dithieno[3,2-b:2,3’-d]pyrroles (DTP) is reported. By microwave-assisted Cu-catalyzed coupling of parent H-DTP 1 with 5- and 6-membered heteroaromatic halides a variety of novel N-functionalized DTPs was obtained. Supported by quantum chemical calculations and X-ray structure analysis, structural and optoelectronic properties of the π-conjugated systems were investigated and led to valuable structure-property relationships. Selected derivatives were electropolymerized to corresponding conducting DTP-polymers.
本文报道了一种合成n -杂芳化二噻吩[3,2-b:2,3 ' -d]吡咯(DTP)的新方法。通过微波辅助cu催化H-DTP - 1与5元和6元杂芳烃卤化物的偶联,得到了多种新型n功能化dtp。在量子化学计算和x射线结构分析的支持下,研究了π共轭体系的结构和光电子性质,并得出了有价值的结构-性质关系。选择的衍生物电聚合成相应的导电dtp聚合物。
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引用次数: 2
Broadly Applicable Synthesis of Heteroarylated Dithieno[3,2- b :2′,3′- d ]pyrroles for Advanced Organic Materials – Part 2: Hole-Transporting Materials for Perovskite Solar Cells 先进有机材料中广泛应用的杂芳化二噻吩[3,2- b:2 ',3 ' - d]吡咯的合成-第2部分:钙钛矿太阳能电池的空穴传输材料
Pub Date : 2022-08-12 DOI: 10.1055/a-1972-5978
Masaud Almalki, Christoph Lorenz, Astrid Vogt, A. Alanazi, Jing Gao, S. Zakeeruddin, P. Bäuerle, F. Eickemeyer, M. Grätzel
Functionalization of heteroarylated dithieno[3,2-b:2’,3’-d]pyrroles (DTP) by triarylamines was elaborated to result in novel hole transport materials (HTMs) for perovskite solar cells. The new HTMs showed promising photovoltaic performance with efficiencies exceeding 18%. A thorough investigation of the electronic and opto-electronic properties revealed that the main efficiency loss mechanisms are not related to the pristine HTM materials but to the suboptimal interface passivation and HTM doping. We provide an optimization strategy for those device fabrication factors, which could render these new materials a potential replacement of current state-of-the-art HTMs.
本文阐述了三芳胺对杂芳化二噻吩[3,2-b:2 ',3 ' -d]吡咯(DTP)的功能化,以制备钙钛矿太阳能电池的新型空穴传输材料(HTMs)。新的HTMs显示出有希望的光电性能,效率超过18%。对其电子和光电性质的深入研究表明,主要的效率损失机制与原始HTM材料无关,而与次优界面钝化和HTM掺杂有关。我们为这些器件制造因素提供了优化策略,这可能使这些新材料成为当前最先进的HTMs的潜在替代品。
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引用次数: 0
Pyrene-Based Macrocrosslinkers with Supramolecular Mechanochromism for Elastic Deformation Sensing in Hydrogel Networks 水凝胶网络弹性变形传感中具有超分子机械色的芘基大交联剂
Pub Date : 2022-08-12 DOI: 10.1055/s-0042-1757972
Dustin Rasch, Robert Göstl
Excimer-containing polymers with supramolecular mechanochromism are an attractive and well-investigated class of mechanoresponsive materials. However, only recently steps toward mechanophore-like mechanochromic systems that are anchored within the parent polymer structure and that show defined optical transitions on the molecular scale have been reported. However, the multi-step syntheses of these constructs are tedious. Here we report the development of a series of pyrene-based macrocrosslinkers that display supramolecular mechanochromism and are readily synthesized from mostly commercial reagents. We incorporate the water-soluble macrocrosslinkers in hydrogel networks and demonstrate their reversible mechanochromic behavior in the elastic deformation regime.
具有超分子机械变色性的含准分子聚合物是一类有吸引力且研究充分的机械响应材料。然而,直到最近,才报道了锚定在母体聚合物结构内并在分子尺度上显示出明确的光学跃迁的类似机械电泳的机械变色系统的步骤。然而,这些构造的多步骤合成是乏味的。在这里,我们报道了一系列基于芘的大交联剂的开发,这些大交联剂显示出超分子机械变色性,并且很容易由大多数商业试剂合成。我们在水凝胶网络中加入了水溶性大交联剂,并证明了它们在弹性变形状态下的可逆机械变色行为。
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引用次数: 4
Stereoselective Copolymerization of Olefin with Polar Monomers to Access Stereoregular Functionalized Polyolefins 烯烃与极性单体的立体选择性共聚制备立体规整官能化聚烯烃
Pub Date : 2022-08-11 DOI: 10.1055/a-1945-0777
Hongliang Mu, Zhongbao Jian
Introducing polar functionalities to polyolefin such as polyethylene and polypropylene is highly desired for improving physical properties of the otherwise non-polar material. The synthesis of stereoregular functionalized polyolefins, however, has been a relatively underdeveloped area compared to that of functionalized polyethylene because of the lack of suitable catalysts that tolerate polar groups while possessing stereoselectivity. This review summarizes recent advances concerning the access to stereoregular functionalized polyolefins, including synthetic strategies such as post-functionalization, chain transfer and direct copolymerization methods. The focus of the review lies in the copolymerization approach, in which various polar comonomers and versatile stereoselective polymerization catalysts based on both early and late transition metals are involved. Polymer properties and potential applications for these materials are simply discussed.
在聚烯烃如聚乙烯和聚丙烯中引入极性官能团对于改善非极性材料的物理性能是非常期望的。然而,与官能化聚乙烯相比,立体规则官能化聚烯烃的合成一直是一个相对不发达的领域,因为缺乏合适的催化剂来耐受极性基团同时具有立体选择性。本文综述了近年来立体规整官能化聚烯烃的研究进展,包括后官能化、链转移和直接共聚等合成策略。综述的重点在于共聚方法,其中涉及各种极性共聚单体和基于早期和晚期过渡金属的多功能立体选择性聚合催化剂。简单讨论了这些材料的聚合物性质和潜在应用。
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引用次数: 2
Click Chemistry-Inspired Synthesis and Photophysical Studies of Calix[4]arene-Cored Galactosylated and Mannosylated Glycodendrimers 杯萼芳烃核半乳糖基化和甘露糖基化糖枝大分子的化学合成和光物理研究
Pub Date : 2022-08-02 DOI: 10.1055/a-2063-1445
Sunil Kumar, Mangal S Yadav, Tarkeshwar Maddeshiya, surabhi asthana, M. Jaiswal, V. Tiwari, Mrituanjay D. Pandey
A prompt and modular Cupper (I) Catalyzed Azide-Alkyne Cycloaddition (CuAAC) ‘click’ approach has been exploited for the synthesis of galactose- and mannose-coated calixarene-cored G1 generation glycodendrimers. The developed calixarene glycodendrimers were characterized by using spectral techniques (1H NMR, 13C NMR and IR). In photophysical evaluation, UV and fluorescence spectra of developed compounds were recorded in the CH3CN/ H2O.
一种快速模块化Cupper(I)催化叠氮化物-炔烃环加成(CuAAC)“点击”方法已被用于合成半乳糖和甘露糖包被的杯芳烃核G1代糖树状大分子。利用光谱技术(1H NMR、13C NMR和IR)对所开发的杯芳烃糖树枝状聚合物进行了表征。在光物理评价中,在CH3CN/H2O中记录了所开发化合物的紫外光谱和荧光光谱。
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引用次数: 0
Temperature-Dependent Dual Fluorescence from Small Organic Molecules 小有机分子的温度依赖性双荧光
Pub Date : 2022-07-25 DOI: 10.1055/a-1953-0322
Min Wang, Runxin Wang, Cui‐Hua Zhao
The temperature-dependent dual fluorescence from a single component of small organic molecules (SOMs) is very promising for the ratiometric fluorescence sensing of temperature. However, the SOM-based fluorophores typically only show one fluorescence band. It is thus very challenging to achieve dual fluorescence, let alone the dual fluorescence that is sensitive to temperature. Herein, in this short review, we briefly summarized the examples of SOM-based fluorophores exhibiting temperature-dependent dual fluorescence. Through representative examples, we mainly focus on the illustration of the intrinsic mechanisms of this unusual phenomenon, which may take place because of the presence of two local minimum conformations that are thermally equilibrated in the ground state, the presence of two local minimum conformations in the first excited state as the result of significant structural relaxation upon excitation, or the presence of thermal equilibrium between the first and second excited states. Hopefully, the discussions in this short review will provide some important guidelines for the further rational molecular design of such fluorophores.
来自小有机分子(SOMs)的单个组分的温度依赖性双荧光对于比率荧光感测温度是非常有前途的。然而,基于SOM的荧光团通常仅显示一个荧光带。因此,实现双荧光是非常具有挑战性的,更不用说对温度敏感的双荧光了。在此,在这篇简短的综述中,我们简要总结了基于SOM的荧光团表现出温度依赖性双荧光的例子。通过代表性的例子,我们主要集中于说明这种不寻常现象的内在机制,这可能是因为存在两个在基态热平衡的局部最小构象,在第一激发态中存在两个局部最小构象是激发时显著结构弛豫的结果,或者在第一和第二激发态之间存在热平衡。希望这篇简短综述中的讨论将为这种荧光团的进一步合理分子设计提供一些重要的指导。
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引用次数: 2
A Review on the Milestones of Blue Light-Emitting Materials in India 印度蓝色发光材料发展历程回顾
Pub Date : 2022-07-23 DOI: 10.1055/s-0042-1757980
Nisha Odedara, Niteen Borane, R. Patel, Rajamouli Boddula
Since 1987 in the field of optoelectronics, organic light-emitting diodes (OLEDs) have secured their position because of their extreme use in panels of lighting applications such as TV and smartphone displays. At present, OLEDs are at top-notch position in the lighting market for their promising features. The field of OLEDs is rapidly growing day by day in academia and industry due to the success of OLEDs in the form of excellent efficiency, feasible methods, excellent lifetime, color purity, and superb device architecture. As a result, OLEDs are new profitable leading devices of the 21st century. However, the OLED industry has evolved in optoelectronics in the last 30 years and is advancing rapidly just because of the development in OLED materials (fluorescent, phosphorescent, thermally activated delayed fluorescent, and blue light-emitting materials). Blue light-emitting materials have achieved incredible popularity nationally and internationally. At the international level, USA, Japan, Korea, and Germany are at the top of the list in the production of OLEDs. India has also seen rapid progress in OLED development in the last 12 years and details of research in blue OLEDs by key players of India are involved in this report.1 Introduction1.1 OLED Construction1.2 Working of OLED2 OLED Development2.1 Historical Background of OLED2.1.1 International Status2.1.2 National Status3 Progress of Blue Emitters in India4 Present Scenario of Blue OLEDs5 Conclusions and Outlook
自1987年以来,在光电子领域,有机发光二极管(oled)由于其在电视和智能手机显示器等照明应用面板中的极端使用而获得了其地位。目前,oled以其优异的性能在照明市场上处于领先地位。由于oled以优异的效率、可行的方法、优异的寿命、颜色纯度和卓越的器件结构等形式取得了成功,因此oled领域在学术界和工业界日益迅速发展。因此,oled是21世纪新的有利可图的领先器件。然而,在过去的30年里,OLED产业在光电子领域得到了发展,并且由于OLED材料(荧光、磷光、热激活延迟荧光和蓝色发光材料)的发展而迅速发展。蓝色发光材料在国内和国际上都取得了令人难以置信的普及。在国际上,美国、日本、韩国和德国在oled生产方面名列前茅。在过去的12年里,印度在有机发光二极管的发展方面也取得了迅速的进展,本报告涉及印度主要参与者在蓝色有机发光二极管方面的研究细节引言1.1 OLED的构造1.2 OLED的工作原理2 OLED的发展2.1 OLED的历史背景2.1.1国际现状2.1.2国内现状3印度蓝色发射体的研究进展4蓝色OLED的发展现状5结论与展望
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引用次数: 1
Characterization of the Interaction of Nerve Agent Mimics with Selected Synthetic Receptors 神经毒剂模拟物与选定的合成受体相互作用的表征
Pub Date : 2022-07-21 DOI: 10.1055/a-1939-6455
Carolina Braga Barbosa, Patrick Gass, Daniel J. Hamsch, Stefan Kubik
Qualitative NMR spectroscopic and quantitative calorimetric binding studies were performed to characterize the interaction of nontoxic mimics of the V-type nerve agent VX and the Novichok nerve agent A-234 with a series of receptors in 100 mM aqueous phosphate buffer at pH 7.4 and 37 °C. These investigations provided information about the preferred geometry with which the nerve agent mimics are included into the receptor cavities and about the stability of the complexes formed. According to the results, the positively charged VX mimic prefers to bind to cation receptors such as sulfonated calixarenes and an acyclic cucurbituril but does not noticeably interact with cyclodextrins. While binding to the acyclic cucurbituril is stronger than that to calixarenes, the mode of inclusion into the sulfonatocalix[4]arene cavity is better suited for the development of scavengers that bind and detoxify V-type nerve agents. The neutral Novichok mimic, on the other hand, only interacts with the acyclic cucurbituril with a strength required for scavenger development. These binding studies thus provided guidelines for the further development of nerve agent scavengers.
定性核磁共振波谱和定量量热结合研究表征了v型神经毒剂VX和诺维乔克神经毒剂a -234的无毒模拟物与一系列受体在pH 7.4和37°C的100 mM磷酸水缓冲液中的相互作用。这些研究提供了有关神经毒剂模拟物进入受体腔的首选几何形状以及形成的复合物的稳定性的信息。结果表明,带正电荷的VX模拟物倾向于与磺化杯芳烃和无环葫芦脲等阳离子受体结合,但与环糊精没有明显的相互作用。虽然与无环葫芦脲的结合强于与杯芳烃的结合,但包裹入磺环环芳烃腔的方式更适合于开发结合和解毒v型神经毒剂的清除剂。另一方面,中性的诺维乔克模拟物仅与无环葫芦脲相互作用,其强度要求清道夫发展。这些结合研究为神经毒剂清除剂的进一步开发提供了指导。
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引用次数: 1
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Organic Materials
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