Chinese Journal of Chemistry最新文献

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Photoredox-Catalyzed 1,2,2-Trifunctionalization of Alkenes with 1,7-Enynes and α-Bromocarbonyls 光氧化还原催化烯烃与1,7-炔和α-溴羰基的1,2,2-三官能化反应
IF 5.7 1区 化学
Chinese Journal of Chemistry Pub Date : 2026-11-01 Epub Date: 2026-09-23 DOI: 10.1002/cjoc.70769
Chengyi Jiang, Shangyu Mao, Yifei Luo, Wenli Xia, Mengli Yang, Xinyu Yu, Jianrui Zhou, Yao Jian, Siping Wei, Zi Yang, Wei Wei, Shiqi Zhang, Dong Yi
{"title":"Photoredox-Catalyzed 1,2,2-Trifunctionalization of Alkenes with 1,7-Enynes and α-Bromocarbonyls","authors":"Chengyi Jiang,&nbsp;Shangyu Mao,&nbsp;Yifei Luo,&nbsp;Wenli Xia,&nbsp;Mengli Yang,&nbsp;Xinyu Yu,&nbsp;Jianrui Zhou,&nbsp;Yao Jian,&nbsp;Siping Wei,&nbsp;Zi Yang,&nbsp;Wei Wei,&nbsp;Shiqi Zhang,&nbsp;Dong Yi","doi":"10.1002/cjoc.70769","DOIUrl":"https://doi.org/10.1002/cjoc.70769","url":null,"abstract":"<div>\u0000 \u0000 <p>Cyclopenta[<i>c</i>]quinoline derivatives represent privileged structural motifs that exhibit remarkable potential biological activities, which have prompted considerable interest in developing green, efficient and general synthetic strategies for constructing this scaffold. Despite significant advances, the currently available methods for the rapid assembly of cyclopenta[<i>c</i>]quinoline frameworks are predominantly limited to two-component reactions, and the development of multicomponent strategies that enable rapid diversification and complexity generation remains highly desirable. Herein, we report a novel visible-light photoredox-catalyzed three-component 1,2,2-trifunctionalization of alkenes with 1,7-enynes and α-bromocarbonyls, enabling rapid and efficient synthesis of structurally diverse cyclopenta[<i>c</i>]quinoline derivatives with excellent functional group tolerance. Notably, this strategy represents a rare example of 1,5-hydrogen atom transfer-enabled 1,2,2-trifunctionalization of alkenes. This mild and transition metal-free protocol operates under ambient conditions with visible light as the sole energy source and allows simultaneous construction of four C–C bonds in one pot, offering a step-economical and atom-efficient approach to complex polycyclic architectures. The reaction exhibits a broad substrate scope across all three coupling partners, including various substituted 1,7-enynes, cyclic and acyclic enamides, unactivated alkenes, and diverse activated alkyl bromides, delivering the desired products in up to 94% yield. Moreover, the synthetic utility of this method is highlighted by gram-scale synthesis and facile downstream transformations of the products. Mechanistic studies, including radical-trapping experiments, radical clock studies, Stern-Volmer fluorescence quenching analysis, and light on/off experiments, indicate that the reaction proceeds through a sequential cascade process involving reductive C–Br bond cleavage, sequential difunctionalization of alkenes, 1,5-hydrogen atom transfer, and intramolecular cyclization.</p>\u0000 <p>\u0000 \u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"44 23","pages":"3851-3858"},"PeriodicalIF":5.7,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149312344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inside Cover Picture 内页图片
IF 5.7 1区 化学
Chinese Journal of Chemistry Pub Date : 2026-11-01 DOI: 10.1002/cjoc.70851
{"title":"Inside Cover Picture","authors":"","doi":"10.1002/cjoc.70851","DOIUrl":"https://doi.org/10.1002/cjoc.70851","url":null,"abstract":"<p>Bicyclo[1.1.1]pentane (BCP) serves as an increasingly indispensable arene bioisostere in modern medicinal chemistry. In this cover feature, we disclose a visible-light-induced four-component reaction (4CR) that enables the convergent synthesis of diverse disubstituted BCP derivatives in a single pot. Notably, this protocol leverages an electron donor–acceptor (EDA) complex to initiate the transformation under catalyst-free conditions, eliminating the need for both transition metals and external photoredox catalysts. With its good functional-group tolerance and scalability, this methodology offers a practical toolbox for pharmaceutical discovery. More details are discussed in the article by Xu <i>et al</i>. on pages 3813—3822.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"44 23","pages":""},"PeriodicalIF":5.7,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cjoc.70851","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149310817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enantio-Complementary Reductive Aminases Enable Efficient and Stereo-Divergent Asymmetric Synthesis of Bulky Aromatic Secondary Amines 对映互补还原氨基酶使大体积芳香仲胺的高效和立体发散不对称合成成为可能
IF 5.7 1区 化学
Chinese Journal of Chemistry Pub Date : 2026-11-01 Epub Date: 2026-09-24 DOI: 10.1002/cjoc.70765
Di Sang, Yan Sun, Qingyu Shen, Bowen Wang, Yingna Kong, Chunhui Song, Lin Yang, Fen-Er Chen
{"title":"Enantio-Complementary Reductive Aminases Enable Efficient and Stereo-Divergent Asymmetric Synthesis of Bulky Aromatic Secondary Amines","authors":"Di Sang,&nbsp;Yan Sun,&nbsp;Qingyu Shen,&nbsp;Bowen Wang,&nbsp;Yingna Kong,&nbsp;Chunhui Song,&nbsp;Lin Yang,&nbsp;Fen-Er Chen","doi":"10.1002/cjoc.70765","DOIUrl":"https://doi.org/10.1002/cjoc.70765","url":null,"abstract":"<div>\u0000 \u0000 <p>Bulky aromatic chiral amines serve as the core structural fragments of numerous mainstream drugs, and the pharmacological activities of these drugs are highly dependent on the stereo configuration differences of chiral amines. In this paper, 20 types of conjugated monocyclic aromatic ketones were used as model substrates. Based on various amine donor systems, the catalytic applications of multiple newly discovered reductive aminases were explored, providing theoretical references and research ideas for the asymmetric catalytic synthesis of bulky aromatic chiral amines.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"44 23","pages":"3771-3783"},"PeriodicalIF":5.7,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149311907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Substituent-Effect Directed Assembly of 95-Nuclear 3d-4f Cluster {Co39RE56} with Potential for Photocatalytic CO2 Reduction to CO 具有光催化CO2还原成CO潜力的95核3d-4f簇{Co39RE56}的取代效应定向组装
IF 5.7 1区 化学
Chinese Journal of Chemistry Pub Date : 2026-11-01 Epub Date: 2026-09-28 DOI: 10.1002/cjoc.70787
Wei-Peng Chen, Kai-Peng Bai, Cai-Hong Fan, Man-Ting Lv, Shuai Ren, Ping Rong, Qi Yu, Yan-Zhen Zheng
{"title":"Substituent-Effect Directed Assembly of 95-Nuclear 3d-4f Cluster {Co39RE56} with Potential for Photocatalytic CO2 Reduction to CO","authors":"Wei-Peng Chen,&nbsp;Kai-Peng Bai,&nbsp;Cai-Hong Fan,&nbsp;Man-Ting Lv,&nbsp;Shuai Ren,&nbsp;Ping Rong,&nbsp;Qi Yu,&nbsp;Yan-Zhen Zheng","doi":"10.1002/cjoc.70787","DOIUrl":"https://doi.org/10.1002/cjoc.70787","url":null,"abstract":"<div>\u0000 \u0000 <p>The design and synthesis of structurally robust high-nuclearity 3d-4f clusters suitable for the photocatalytic reduction of CO<sub>2</sub> have consistently presented formidable challenges. In this study, we achieved a notable enhancement in the solubility of ligands in methanol by judiciously modifying the substituents on the N-donor of iminodiacetic acid ligand. This advancement empowered us to synthesize an innovative family of 3d-4f coordination clusters comprising 95 metal centers, specifically {Co<sub>39</sub>RE<sub>56</sub>} (where RE = La (<b>1</b>), Pr (<b>2</b>), and Nd (<b>3</b>)), under solvothermal conditions. To our knowledge, this represents one of the rare instances within high-nuclearity Co-RE clusters. Their exceptional solution stability and potential multi-site active centers render these clusters highly promising candidates for photocatalytic CO<sub>2</sub> reduction. Notably, cluster <b>1</b> achieves a comparable CO production rate (2887.2 μmol·g<sup>−1</sup>·h<sup>−1</sup>) and selectivity (94.4%) to those of many existing catalysts. Spin-polarized density functional theory calculations were conducted to elucidate the mechanisms underlying catalytic reactions. This work provides new insights into the design and assembly of nanoscale heterometallic 3d-4f cluster catalysts.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"44 23","pages":"3823-3830"},"PeriodicalIF":5.7,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149312422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Organic Electroreductive Transformations 有机电还原转化
IF 5.7 1区 化学
Chinese Journal of Chemistry Pub Date : 2026-11-01 Epub Date: 2026-10-13 DOI: 10.1002/cjoc.70742
Chao Gao, Pengfei Li, Anzai Shi, Xinyu Ma, Youai Qiu
{"title":"Organic Electroreductive Transformations","authors":"Chao Gao,&nbsp;Pengfei Li,&nbsp;Anzai Shi,&nbsp;Xinyu Ma,&nbsp;Youai Qiu","doi":"10.1002/cjoc.70742","DOIUrl":"https://doi.org/10.1002/cjoc.70742","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Comprehensive Summary</h3>\u0000 \u0000 <p>As a green and efficient organic synthesis strategy, electrochemical reduction reactions have become an important method for constructing carbon-carbon and carbon-heteroatom bonds, owing to their unique advantages, including electrons serving as clean reducing agents, mild reaction conditions, controllable and adjustable potential, and favorable atom economy. They exhibit broad application prospects in fields such as the total synthesis of natural products, the preparation of pharmaceutical intermediates, and the synthesis of functional materials. Compared with traditional thermochemical reduction reactions, electrochemically driven reduction reactions can achieve selective regulation of reaction pathways by precisely controlling the electrode potential, thereby effectively avoiding side reactions, environmental pollution, and product separation difficulties caused by external reducing agents. Meanwhile, it can activate inert chemical bonds and accomplish transformations that are challenging to realize via traditional methods. This review systematically summarizes the recent research progress in electrochemical reduction reactions. Classified by substrate types, it elaborates on the reaction mechanisms, catalytic system design, and reaction selectivity regulation strategies of electrochemical reduction reactions involving different substrates. Additionally, the current challenges and future development directions in this field are prospected, providing a reference for the development and application of novel electrochemical reduction reactions.</p>\u0000 \u0000 <p>\u0000 </p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Key Scientists</h3>\u0000 \u0000 <p>\u0000 </p>\u0000 </section>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"44 23","pages":"3882-3934"},"PeriodicalIF":5.7,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149311654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Molecular Ring-locking Strategy for Narrowband Ultraviolet Organic Electroluminescence with Negligible Efficiency Roll-Off 可忽略效率滚降的窄带紫外有机电致发光分子锁环策略
IF 5.7 1区 化学
Chinese Journal of Chemistry Pub Date : 2026-11-01 Epub Date: 2026-09-23 DOI: 10.1002/cjoc.70780
Rui Zhang, Runjie Ding, Shengnan Wang, Ling Peng, Yuchao Liu, Junjie Wang, Shaojuan Wang, Shouke Yan, Shian Ying
{"title":"Molecular Ring-locking Strategy for Narrowband Ultraviolet Organic Electroluminescence with Negligible Efficiency Roll-Off","authors":"Rui Zhang,&nbsp;Runjie Ding,&nbsp;Shengnan Wang,&nbsp;Ling Peng,&nbsp;Yuchao Liu,&nbsp;Junjie Wang,&nbsp;Shaojuan Wang,&nbsp;Shouke Yan,&nbsp;Shian Ying","doi":"10.1002/cjoc.70780","DOIUrl":"https://doi.org/10.1002/cjoc.70780","url":null,"abstract":"<div>\u0000 \u0000 <p>Donor-acceptor (D-A) type pure organic fluorophores are pivotal for cost-effective wide-color-gamut displays, yet they often suffer from spectral broadening and efficiency roll-off, especially in short-wavelength ultraviolet organic light-emitting diodes (UV-OLEDs). Here, we present a ring-locking strategy for the diphenylbenzimidazole acceptor via intramolecular covalent bonds to rigidify D-A emitters (mBGCz and mBGtbuCz) with a hybridized local and charge-transfer state. The resulting emitters exhibit narrowed ultraviolet emission with high photoluminescence quantum yields of 97%, together with extremely low non-radiative decay rates (&lt;10<sup>7</sup> s<sup>−1</sup>). The mBGCz- and mBGtbuCz-based devices achieve maximum external quantum efficiencies (EQEs) of 7.88% and 6.71% as well as stable narrowband ultraviolet emission with peak wavelengths at 385 and 389 nm, and color coordinates of (0.166, 0.024) and (0.166, 0.022), respectively. Remarkably, the mBGCz-based device maintains high EQEs of 7.88% and 7.67% at 500 and 1000 cd·m<sup>−2</sup>, respectively, and still delivers 7.28% at 1500 cd·m<sup>−2</sup>, corresponding to negligible efficiency roll-off. This work provides a viable design strategy to simultaneously overcome the trade-offs between low luminance, efficiency roll-off, and color purity in ultraviolet emitters, paving the way for UV-OLED applications in high-brightness scenarios.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"44 23","pages":"3791-3798"},"PeriodicalIF":5.7,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149312343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ultrastable and High-Capacity Aqueous Ammonium-Ion Storage in {Mo7}@CNTs via a Pseudocapacitive Hydrogen-Bonding Network 通过赝电容式氢键网络在{Mo7}@CNTs中实现超稳定和高容量的水铵离子存储
IF 5.7 1区 化学
Chinese Journal of Chemistry Pub Date : 2026-11-01 Epub Date: 2026-09-23 DOI: 10.1002/cjoc.70801
Yu Liang, Mengtian Huo, Xingzhe Guo, Wei Liu, Xiaowen Gu, Xinye Zhang, Chenyu Cui, Zihao Xing, Jinfa Chang
{"title":"Ultrastable and High-Capacity Aqueous Ammonium-Ion Storage in {Mo7}@CNTs via a Pseudocapacitive Hydrogen-Bonding Network","authors":"Yu Liang,&nbsp;Mengtian Huo,&nbsp;Xingzhe Guo,&nbsp;Wei Liu,&nbsp;Xiaowen Gu,&nbsp;Xinye Zhang,&nbsp;Chenyu Cui,&nbsp;Zihao Xing,&nbsp;Jinfa Chang","doi":"10.1002/cjoc.70801","DOIUrl":"https://doi.org/10.1002/cjoc.70801","url":null,"abstract":"<div>\u0000 \u0000 <p>Aqueous ammonium-ion (NH<sub>4</sub><sup>+</sup>) batteries (AAIBs) hold great promise for sustainable energy storage owing to their high safety, low cost, and dendrite-free characteristics. However, existing electrode materials generally suffer from insufficient active sites, poor structural stability, and sluggish charge-transfer kinetics. Here we report a composite {Mo<sub>7</sub>}@CNTs, in which heptamolybdate polyoxometalate ({Mo<sub>7</sub>}) clusters are uniformly anchored on the surface of carbon nanotubes (CNTs). The {Mo<sub>7</sub>} cluster, composed of seven MoO<sub>6</sub> octahedra, establishes an electron-delocalized network and provides abundant terminal oxygen (Mo=O<sub>t</sub>) sites that form reversible hydrogen bonds with NH<sub>4</sub><sup>+</sup>, enabling fast surface capacitance-dominated charge storage. The highly conductive CNTs network effectively suppresses the aggregation and dissolution of {Mo<sub>7</sub>} and reduces the kinetic barrier. The optimized {Mo<sub>7</sub>}@CNTs delivers a specific capacity of 325.1 mAh·g<sup>–1</sup>, with negligible capacity decay over 20,000 cycles and a Coulombic efficiency remaining at nearly 100%. An asymmetric full cell assembled with {Mo<sub>7</sub>}@CNTs as the anode and MoO<sub>3</sub> as the cathode achieves an energy density of 81.4 Wh·kg<sup>–1</sup> at an operating voltage of 1.6 V and retains nearly 100% of its initial capacity after 20,000 cycles at 10 A·g<sup>–1</sup>. This work provides a surface-interface synergy strategy for designing high-capacity, ultra-long-life aqueous non-metallic ion energy storage materials.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"44 23","pages":"3831-3839"},"PeriodicalIF":5.7,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149312345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Visible-Light-Promoted Four-Component Reaction Based on Catalytic EDA Complexes: Efficient Synthesis of C3-Functionalized Bicyclo[1.1.1]pentane Sulfones 基于催化EDA配合物的可见光促进四组分反应:c3功能化双环[1.1.1]戊烷砜的高效合成
IF 5.7 1区 化学
Chinese Journal of Chemistry Pub Date : 2026-11-01 Epub Date: 2026-09-25 DOI: 10.1002/cjoc.70766
Ruiyuan Xu, Yibo Wang, Zhihang Tan, Binye Cao, Zifei Xia, Yihan Gao, Wanmei Li, Jun Xu
{"title":"Visible-Light-Promoted Four-Component Reaction Based on Catalytic EDA Complexes: Efficient Synthesis of C3-Functionalized Bicyclo[1.1.1]pentane Sulfones","authors":"Ruiyuan Xu,&nbsp;Yibo Wang,&nbsp;Zhihang Tan,&nbsp;Binye Cao,&nbsp;Zifei Xia,&nbsp;Yihan Gao,&nbsp;Wanmei Li,&nbsp;Jun Xu","doi":"10.1002/cjoc.70766","DOIUrl":"https://doi.org/10.1002/cjoc.70766","url":null,"abstract":"<div>\u0000 \u0000 <p>Herein, we report a visible-light-mediated, transition-metal-free four-component protocol that synergistically combines the high efficiency of multicomponent reactions (MCRs) with the unique benefits of electron donor-acceptor (EDA) complex photochemistry. In this transformation, readily available sulfonyl chlorides serve as radical precursors, and thiuram disulfide species, generated <i>in situ</i> from the reaction of carbon disulfide with amines, act as effective radical acceptors. Subsequent radical tandem addition with [1.1.1]propellane, conducted in environmentally benign 2-methyltetrahydrofuran (2-MeTHF), delivers a diverse library of 1-sulfonyl-3-dialkylaminothiocarbonylthiol bicyclo[1.1.1]pentane (BCP) products. This protocol realizes the four-component difunctionalization of [1.1.1]propellane <i>via</i> EDA complex activation, a process that simultaneously forges two C(<i>sp</i><sup>3</sup>)–S bonds at the bridgehead positions with outstanding chemo- and regioselectivity. Beyond establishing a mild and green synthetic route to sulfur-containing BCP building blocks, this methodology provides a practical means to reduce the reliance of EDA photocatalytic systems on conventional aromatic electron donors. Accordingly, this work is of substantial significance to the advancement of BCP synthetic chemistry and holds considerable promise for applications in pharmaceutical and materials science.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"44 23","pages":"3813-3822"},"PeriodicalIF":5.7,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149312260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-Efficiency Deep-NIR Radical OLEDs via Suppression of Non-Radiative Loss† 抑制非辐射损耗的高效深近红外自由基oled
IF 5.7 1区 化学
Chinese Journal of Chemistry Pub Date : 2026-11-01 Epub Date: 2026-09-28 DOI: 10.1002/cjoc.70806
Zenghui Dai, Lingfeng Xiang, Shengxiang Gao, Chengyuan Zhao, Ming Zhang, Feng Li
{"title":"High-Efficiency Deep-NIR Radical OLEDs via Suppression of Non-Radiative Loss†","authors":"Zenghui Dai,&nbsp;Lingfeng Xiang,&nbsp;Shengxiang Gao,&nbsp;Chengyuan Zhao,&nbsp;Ming Zhang,&nbsp;Feng Li","doi":"10.1002/cjoc.70806","DOIUrl":"https://doi.org/10.1002/cjoc.70806","url":null,"abstract":"<div>\u0000 \u0000 <p>Efficient organic light-emitting diodes (OLEDs) operating in the deep near-infrared (NIR, &gt;800 nm) region remain fundamentally constrained by severe non-radiative losses dictated by the energy-gap law. Here, we report that introducing sterically demanding and weakly electron-donating methyl groups into radical emitters suppresses non-radiative decay, enabling efficient deep-NIR electroluminescence. Compared with conventional π-extension approaches, the introduction of methyl substituents, combined with a moderate reduction in donor π-conjugation, effectively restricts structural relaxation and attenuates low-frequency vibrational coupling, while preserving high-frequency vibrational decoupling, leading to further red-shifted emission without sacrificing radiative efficiency. Transient absorption spectroscopy reveals accelerated host–guest energy transfer, underpinning efficient exciton utilization. As a result, OLEDs based on the radical emitter deliver deep-NIR electroluminescence at 840 nm with a maximum EQE of 6.1%, representing a record performance for metal-free emitters beyond 800 nm. This work highlights the importance of excited-state relaxation management via steric modulation for deep-NIR organic optoelectronic materials.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"44 23","pages":"3753-3759"},"PeriodicalIF":5.7,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149312401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hypervalent Iodine Catalysis via Halogen-Bonding Activation: Achieving Record Turnover Numbers 通过卤素键激活的高价碘催化:实现创纪录的周转率
IF 5.7 1区 化学
Chinese Journal of Chemistry Pub Date : 2026-11-01 Epub Date: 2026-09-24 DOI: 10.1002/cjoc.70799
Dan-Dan Lin, Ze-Nan Hu, Feng-Huan Du, Chen-Yue Wang, Chi Zhang
{"title":"Hypervalent Iodine Catalysis via Halogen-Bonding Activation: Achieving Record Turnover Numbers","authors":"Dan-Dan Lin,&nbsp;Ze-Nan Hu,&nbsp;Feng-Huan Du,&nbsp;Chen-Yue Wang,&nbsp;Chi Zhang","doi":"10.1002/cjoc.70799","DOIUrl":"https://doi.org/10.1002/cjoc.70799","url":null,"abstract":"<div>\u0000 \u0000 <p>Hypervalent iodine reagents have emerged as versatile and environmentally benign tools in modern organic synthesis, enabling diverse transformations under mild reaction conditions. Despite their remarkable synthetic utility, these reagents are typically employed in stoichiometric amounts, and catalytic versions using hypervalent iodine species remain underdeveloped. Herein, we report a hypervalent iodine(III) reagent, (phenyliodonio)sulfamate (<b>PISA</b>), that acts as an efficient halogen-bond donor for the catalytic Knorr pyrazole synthesis. This method exhibits good functional group compatibility and allows for the efficient synthesis of a wide range of <i>N-</i>acyl- and <i>N-</i>sulfonyl-substituted pyrazole derivatives under mild conditions. Mechanistic studies, including isolation and characterization of key intermediates, kinetic profiling, as well as DFT calculations, reveal that <b>PISA</b> plays a dual role in this reaction: it activates acetylacetone via halogen-bonding interactions to accelerate cyclization, and critically facilitates the rate-determining dehydrative aromatization step, ensuring high overall efficiency. Therefore, this catalytic reaction achieves an ultrahigh turnover number (TON) of 12685, which not only sets a new record for hypervalent iodine catalysts in this reaction, but also represents the highest TON value reported for all hypervalent iodine-catalyzed reactions to date.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"44 23","pages":"3799-3805"},"PeriodicalIF":5.7,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149312250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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