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How can we improve the stability of organic solar cells from materials design to device engineering?

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Aggregate 2024年第5期5卷 109-134页

作者： Mingpeng Li Leilei Tian Feng He Shenzhen Grubbs Institute and department of chemistry Southern University of Science and TechnologyShenzhenGuangdongChina department of Materials Science and Engineering Southern University of Science and TechnologyShenzhenGuangdongChina guangdong provincial key laboratory of catalytic chemistry Southern University of Science and TechnologyShenzhenGuangdongChina

Among a promising photovoltaic technology for solar energy conversion,organic solar cells(OSCs)have been paid much attention,of which the power conversion efﬁciencies(PCEs)have rapidly surpassed over 20%,approaching the threshold for potential ***,the device stability of OSCs including storage stability,photostability and thermal stability,remains to be an enormous challenge when faced with practical *** major causes of device instability are rooted in the poor inherent properties of light-harvesting materials,metastable mor-phology,interfacial reactions and highly sensitive to external *** get rid of theseﬂaws,a comprehensive review is provided about recent strategies and meth-ods for improving the device stability from active layers,interfacial layers,device engineering and encapsulation techniques for high-performance OSC *** the end,prospectives for the next stage development of high-performance devices with satisfactory long-term stability are afforded for the solar community.

关键词： device engineering materials design organic solar cells stability

Atomically precise metal chalcogenide supertetrahedral clusters:frameworks to molecules,and structure to function

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National Science Review 2022年第1期9卷 128-143页

作者： Jiaxu Zhang Pingyun Feng Xianhui Bu Tao Wu College of chemistry Chemical Engineering and Material Science Soochow University department of chemistry University of California College of chemistry and Materials Science Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications Jinan University department of chemistry and Biochemistry California State University

Metal chalcogenide supertetrahedral clusters(MCSCs) are of significance for developing crystalline porous framework materials and atomically precise cluster *** research interest focused on the synthetic and structural chemistry of MCSC-based porous semiconductor materials with different cluster sizes/compositions and their applications in adsorption-based separation and *** recently,focus has shifted to the cluster chemistry of MCSCs to establish atomically precise structure-composition-property relationships,which are critical for regulating the properties and expanding the applications of ***,MCSCs are similar to Ⅱ-Ⅵ or Ⅰ-Ⅲ-Ⅵ semiconductor nanocrystals(also called quantum dots,QDs) but avoid their inherent size polydispersity and structural ***,discrete MCSCs,especially those that are solution-processable,could provide models for understanding various issues that cannot be easily clarified using *** review covers three decades of efforts on MCSCs,including advancements in MCSC-based open frameworks(reticular chemistry),the precise structure-property relationships of MCSCs(cluster chemistry),and the functionalization and applications of MCSC-based micro *** outlook on remaining problems to be solved and future trends is also presented.

关键词： metal chalcogenide nanocluster open framework semiconductor reticular chemistry atomically precise nanochemistry

Iridium and B(C_(6)F_(5))_(3) co-catalyzed chemoselective deoxygenative reduction of tertiary amides:application to the efficient synthesis and late-stage modification of pharmaceuticals

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Science China chemistry 2023年第4期66卷 1094-1100页

作者： Feng Han Guang-Sheng Lu Dong-Ping Wu Pei-Qiang Huang department of chemistry Fujian Provincial Key Laboratory of Chemical BiologyCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

The Vaska’s complex—tris(pentafluorophenyl)borane combination was found to be a highly efficient cooperative catalysis system for the hydrosilylative reduction of tertiary amides to yield amines under mild *** reaction shows high chemoselectivity,tolerating halide,phenolyl,alkenyl,nitro,nitrile,ester,azido,ketone,and enone functional *** unsubstituted cyclohexanone carboxamide,two variations were established to achieve either catalytic concomitant reduction of the two carbonyl groups or selective reduction of the amide *** protocol was applied to the efficient synthesis and latestage modification of several pharmaceuticals and ***,we showed that by simply prolonging reaction time to 24–28 h,the reaction can reach an exceptionally high efficiency with turnover number(TON)up to 9.8×10^(6) and turnover frequency(TOF)up to 408,333 at a quite low catalyst loading of 0.00001 mol%(S/C(Ir)=10,000,000).

关键词： amide reduction cooperative catalysis chemoselectivity hydrosilylation amines

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In-situ reconstruction of catalysts in cathodic electrocatalysis: New insights into active-site structures and working mechanisms

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Journal of Energy chemistry 2022年第7期31卷 414-436,I0011页

作者： Wenbiao Zhang Yang Yang Yi Tang Qingsheng Gao College of chemistry and Materials Science and Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and ApplicationsJinan UniversityGuangzhou 510632GuangdongChina department of chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsLaboratory of Advanced Materials and Collaborative Innovation Center of Chemistry for Energy Materials(iCHEM)Fudan UniversityShanghai 200433China

Cathodic electrocatalytic reactions, such as hydrogen evolution and CO_(2)/N_(2) reduction, are the key processes that store intermittent electricity into stable chemical energy. Although a great progress has been made to boost activity and selectivity via elaborative catalyst design, the structure–property relationships have not been sufficiently understood in the context of surface reconfiguration under working conditions. Recent efforts devoted to tracking dynamic evolution of electrocatalysts using in-situ and/or operando techniques gave new insights into the real structure and working mechanism of active sites,and provided principles to design better catalysts. The achievement of cathodic electrocatalysts in this subject is herein summarized, focusing on the correlations between reconstructed surface and electrocatalytic performance. Briefly, the thermodynamics of reconstruction at cathodes is discussed at first, and then the representative progresses in H_(2) evolution and CO_(2)/N_(2) reduction are introduced in sequence to acquire insights into electrochemical processes on in-situ reconfigured surfaces or interfaces. Finally, a perspective is offered to guide future investigations. This review is anticipated to shed some new light on in-depth understanding cathodic electrocatalysis and exploiting prominent electrocatalysts.

关键词： Hydrogen evolution reaction CO_(2)reduction reaction Nitrogen reduction reaction In-situ reconstruction Electronic configurations Valence states Topological changes

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Construction of a Metallacyclopentadiene Ring through the Attack of Carbanions to M≡C Bond Followed by C—H Activation

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Chinese Journal of chemistry 2024年第3期42卷 235-242页

作者： Chun Tang Shengjie Zhang Zhengyu Lu Qian Li Ming Luo Dafa Chen Haiping Xia State key laboratory of Physical chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringCollaborative Innovation Center of Chemistry for Energy MaterialsXiamen UniversityXiamenFujian361005 China Shenzhen Grubbs Institute and guangdong provincial key laboratory of Catalysis Department of ChemistrySouthern University of Science and TechnologyShenzhenGuangdong518055 China

Metallacyclopentadienes are important metallacycles and regarded as intermediates in many reactions,therefore,new methods to achieve them are *** this study,a formal[3+2]method,through the reactions of an osmapentalyne with benzyl carbanions,was *** reactions underwent a nucleophilic attack of carbanions to the Os≡C bond,followed by C—H activation to form the five-membered osmacyclopentadiene *** of the reactions were carried out at room temperature,the substituents on the aromatic rings of benzyl carbanions are diverse,and the resulting products contain an Os—H bond,representing a novel type of 10C-carbolong *** work provides a new convenient route to construct metallacyclopentadienes,which is expected to further promote the development of such a type of substances.

关键词： Metallacyclopentadiene Carbolong chemistry Osmium C–H activation Nucleophilic addition

Solid-liquid phase change materials microcapsules: Synthesis strategies,thermal storage and beyond

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Progress in Natural Science:Materials International 2024年第4期34卷 615-631页

作者： Yan Gao Huan Liu Haoguan Gui Chao Yao Guolin Zhang Fuxin Liang Jiangsu key laboratory of Advanced catalytic Materials and Technology School of Petrochemical Engineering Changzhou University department of Chemical Engineering Tsinghua University Liaoning provincial key laboratory for Green Synthesis and Preparative chemistry of Advanced Materials Liaoning University

Thermal energy storage is crucial in the context of achieving carbon neutrality. Phase change latent heat stands out among various thermal storage methods due to the high energy density of phase change materials(PCMs).PCMs possess unique characteristics such as tunable thermal storage or/and release processes, constant phasetransition temperatures, and changes in physical state. However, solid-liquid PCMs cannot be directly utilized due to the liquid leakage in their melted state. The encapsulation of PCM microcapsules(PCMMs) is essential for overcoming limitations and optimizing functionalities of the PCMs. Encapsulation strategies play a key role in considering factors like morphology, structure, physicochemical properties, and specific applications. Furthermore, PCMMs can expand their potential applications by incorporating functional nano-materials within their shells or introducing specific components into their cores during the synthesis process. This review examines various encapsulation strategies for PCMMs, including physical, physicochemical, and chemical methods. Various applications of PCMMs are summarized and analyzed with regards to the characteristics of PCMs in thermal storage, temperature control, and state transformation. Furthermore, the reinforcement strategies or/and design considerations of PCMMs are crucial for meeting specific requirements, such as conventional latent heat storage,thermal protection, and thermal-triggered intelligent materials. Finally, it discusses current challenges, proposed solutions, and future research directions in the field of PCMMs, particularly Janus particle modified PCMMs.

关键词： Controllable synthesis Controlled payload release Microcapsule Phase change materials Programmable mechanical behavior

Transfer of an Aluminum Atom:An Avenue to Aluminum Heterocycles

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CCS chemistry 2023年第9期5卷 2059-2068页

作者： Xin Zhang Hongyu Wang Xiaofang Lan Yanbo Mei David A.Ruiz Liu Leo Liu department of chemistry and guangdong provincial key laboratory of Catalysis Southern University of Science and TechnologyShenzhen 518055

Synthetic chemistry enables constructing molecular complexity using simple substrates through simple *** disclose an unprecedented Al-atom transfer strategy for the synthesis of aluminum heterocycles with high atom *** strategy involves an effective cycloaddition of a free carbazolyl-aluminylene with unsaturated hydrocarbons,followed by facile cleavage of the N-Al *** aluminylene formally behaves as a tetra-active ambiphilic[Al+]cation transfer reagent in a two-step manner,and the only byproduct is a carbazolide salt that can be utilized to regenerate the *** carbazolyl Al-heterocycles show unique luminescent properties,in which one exhibits dual *** approach not only has a significant impact on the future design of single-atom addition reactions but also paves the way for emissive materials based on Al-heterocycles.

关键词： aluminum heterocycles atom transfer dual emission alumole aluminylene

Electrocatalytic C0_(2) Reduction with Re-Based Spiro Bipyridine Complexes: Effects of the Local Proton in the Second Coordination Sphere

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Chinese Journal of chemistry 2021年第5期39卷 1281-1287页

作者： Yong Yang Ziyun Zhang Zhenyu Zhang Chao Tang Xiaoyong Chang Lele Duan department of chemistry Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Energy Materials for Electric PowerSouthern University of Science and TechnologyShenzhenGuangdong 518055China

We report herein a Re-based tricarbonyl catalyst[fac-Re(L1)(CO)_(3)Cl](Re1)bearing a spiro center and a phenol group as a local proton source in the second coordination *** to the large steric spiro group,dimerization of one-electron reduced species was completely eliminated,improving the stability of ***,the phenol group in the second coordination sphere improves the formation of an H-bonding chain that promotes the protonation of C0_(2) reduction intermediates,boosting the electrocatalytic C0_(2) reduction activity of *** studies reveal that the doubly reduced complex Re1b is active for C0_(2) addition.

关键词： Rhenium Homogeneous catalysis Second coordination sphere Electrochemistry CO_(2)reduction

Boron-Stereogenic Compounds:Synthetic Developments and Opportunities

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Chinese Journal of chemistry 2024年第19期42卷 2401-2411页

作者： Yonghong Guo Bing Zu Cadmus Du Chen Chuan He key laboratory of Medicinal chemistry and Molecular Diagnosis of the Ministry of Education Key Laboratory of Chemical Biology of Hebei ProvinceCollege of Chemistry and Materials ScienceHebei UniversityBaodingHebei 071002China Shenzhen Grubbs Institute and department of chemistry Guangdong Provincial Key Laboratory of CatalysisSouthern University of Science and TechnologyShenzhenGuangdong 518055China

Comprehensive Summary The 21st century has witnessed a continuous evolution in the development of boron-stereogenic *** the 1990s,various innovations for the synthesis of tetracoordinate boron-stereogenic compounds,which exhibited great potential applications,have been demonstrated by synthetic *** paper reviews the significant progress and recent advances towards the assembly of enantioenriched boron-stereogenic compounds,and hopes to shed light on new perspectives and inspire further research in this emerging field.

关键词： Chiral organoboron Boron-stereogenic compounds Chiral resolution Asymmetric synthesis Asymmetric catalysis Chirality Heterocycles Chelates