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A planar pentacoordinate oxygen in the experimentally observed [Be5O6]2– dianion 在实验中观察到的[Be5O6]2 -离子中的一个平面五配位氧
IF 8.4 1区 化学
Chemical Science Pub Date : 2025-05-16 DOI: 10.1039/d5sc02361k
Rui Sun, Yang Yang, Xin Wu, Hua-Jin Zhai, Caixia Yuan, Yanbo Wu
{"title":"A planar pentacoordinate oxygen in the experimentally observed [Be5O6]2– dianion","authors":"Rui Sun, Yang Yang, Xin Wu, Hua-Jin Zhai, Caixia Yuan, Yanbo Wu","doi":"10.1039/d5sc02361k","DOIUrl":"https://doi.org/10.1039/d5sc02361k","url":null,"abstract":"Small multiply charged anions (SMCAs) are exceptionally challenging to generate in gas-phase experiments due to the spontaneous detachment of excess electrons. The [Be<small><sub>5</sub></small>O<small><sub>6</sub></small>]<small><sup>2–</sup></small> dianion, first produced in 2006 via electrospray ionization and initially proposed by a concurrent computational study to adopt a linear O-Be-alternating structure, stands as a rare experimentally observed SMCA. In this study, by applying our recently developed electron-compensation strategy, we designed a starlike <em>D</em><small><sub>5</sub></small><small><sub><em>h</em></sub></small> [O©Be<small><sub>5</sub></small>O<small><sub>5</sub></small>]<small><sup>2–</sup></small> cluster featuring a planar pentacoordinate oxygen (ppO), which intriguingly shares the molecular formula [Be<small><sub>5</sub></small>O<small><sub>6</sub></small>]<small><sup>2–</sup></small>. Remarkably, this ppO isomer is not only 55.8 kcal/mol more stable than the previously reported linear isomer but also the global energy minimum on the [Be<small><sub>5</sub></small>O<small><sub>6</sub></small>]<small><sup>2–</sup></small> potential energy surface. By adhering to the principles of the electron-compensation strategy, all Be atoms in the ppO isomer are electronically compensated and geometrically shielded by peripheral O atoms, resulting in a well-defined electronic structure. This is evidenced by a positive first vertical detachment energy of 2.44 eV, which effectively prevents the spontaneous loss of excess electrons. Thus, our work serendipitously uncovered and elaborately rationalized an experimentally unprecedented ppO within the previously generated SMCA [Be<small><sub>5</sub></small>O<small><sub>6</sub></small>]<small><sup>2–</sup></small>, marking a significant milestone in the field.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"16 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144066230","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
Precise Detection G-quadruplex in Living Systems: Principles, Applications, and Perspectives 生命系统中g -四重体的精确检测:原理、应用和前景
IF 8.4 1区 化学
Chemical Science Pub Date : 2025-05-16 DOI: 10.1039/d5sc00918a
Huanhuan Li, Zelong Jin, Shuxin Gao, Shi Kuang, Chunyang Lei, Zhou Nie
{"title":"Precise Detection G-quadruplex in Living Systems: Principles, Applications, and Perspectives","authors":"Huanhuan Li, Zelong Jin, Shuxin Gao, Shi Kuang, Chunyang Lei, Zhou Nie","doi":"10.1039/d5sc00918a","DOIUrl":"https://doi.org/10.1039/d5sc00918a","url":null,"abstract":"G-quadruplexes (G4s) are non-canonical nucleic acid secondary structures that play a crucial role in regulating essential cellular processes such as replication, transcription, and translation. The formation of G4s is dynamically controlled by the physiological state of the cell. Accurate detection of G4 structures in live cells, as well as studies of their dynamic changes and the kinetics of specific G4s, are essential for understanding their biological roles, exploring potential links between aberrant G4 expression and disease, and developing G4-targeted diagnostic and therapeutic strategies. This perspective briefly overviews G4 formation mechanisms and their known biological functions. We then summarize the leading techniques and methodologies available for G4 detection, discussing the principles and applications of each approach. In addition, we outline strategies for the global detection of intracellular G4s, methods for conformational recognition, and approaches for targeting specific sequences. Finally, we discuss the technical limitations and challenges currently facing the field of G4 detection and offer perspectives on potential future directions. We hope this review will inspire further research into the biological functions of G4s and their applications in disease diagnosis and therapy.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"96 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144066229","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
Targeted Recognition, Fluorescent Tracking and Augmented Killing of Multi-Bacterial Infection via Synergizing Magnetic Bead-Armored Phage Cocktail with Enzyme-Activated AIE Probes 磁珠-装甲噬菌体鸡尾酒与酶激活AIE探针协同作用对多细菌感染的靶向识别、荧光跟踪和增强杀伤
IF 8.4 1区 化学
Chemical Science Pub Date : 2025-05-15 DOI: 10.1039/d5sc01072a
Zhenyue Su, Ling-Hong Xiong, Jing Zhang, Ben Zhong Tang, Xuewen He
{"title":"Targeted Recognition, Fluorescent Tracking and Augmented Killing of Multi-Bacterial Infection via Synergizing Magnetic Bead-Armored Phage Cocktail with Enzyme-Activated AIE Probes","authors":"Zhenyue Su, Ling-Hong Xiong, Jing Zhang, Ben Zhong Tang, Xuewen He","doi":"10.1039/d5sc01072a","DOIUrl":"https://doi.org/10.1039/d5sc01072a","url":null,"abstract":"Accurate identification and elimination of multi-bacterial infections are critical due to their significant threat to human health, the complexity of synergistic pathogenic mechanisms and their pivotal role in accelerating antibiotic resistance. Here, we developed a multiplex phage-based fluorescence assay using encoded magnetic nanobeads and multifunctional alkaline phosphatase (ALP)-activatable aggregation-induced emission (AIE) probes for synchronously sensitive detection and efficient elimination of multiple pathogenic bacteria. Preselected phages were covalently conjugated to magnetic nanobeads to form phage cocktail recipe, enabling specific and precise separation of target bacteria from mixed samples. The high expression of ALP within bacteria triggers enzymatic cleavage of AIE probes, forming luminescent aggregates for sensitive detection, while quinone methide species generated in situ exhibit strong chemodynamic and photodynamic activities for enhanced bacterial killing. Combining the inherent bacteriolytic activity of phages on magnetic nanobeads, significantly boosted efficacy in killing multi-bacterial infections was achieved. Both in vitro and in vivo experiments demonstrated that this integrated system enables sensitive identification of multi-bacterial infections and augmented antibacterial efficiency, offering a novel strategy for the real-time, precise diagnosis and treatment of multi-bacterial infections.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"96 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143979888","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
Unifying Sequence-Structure Coding for Advanced Protein Engineering via a Multimodal Diffusion Transformer 基于多模态扩散变压器的高级蛋白质工程统一序列-结构编码
IF 8.4 1区 化学
Chemical Science Pub Date : 2025-05-15 DOI: 10.1039/d5sc02055g
Xiaohan Lin, Zhenyu Chen, Yanheng Li, Zicheng Ma, Chuanliu Fan, Ziqiang Cao, Shihao Feng, Jun Zhang, Yi Qin Gao
{"title":"Unifying Sequence-Structure Coding for Advanced Protein Engineering via a Multimodal Diffusion Transformer","authors":"Xiaohan Lin, Zhenyu Chen, Yanheng Li, Zicheng Ma, Chuanliu Fan, Ziqiang Cao, Shihao Feng, Jun Zhang, Yi Qin Gao","doi":"10.1039/d5sc02055g","DOIUrl":"https://doi.org/10.1039/d5sc02055g","url":null,"abstract":"Modern protein engineering demands integrated sequence-structure representations to tackle key challenges in designing, modifying, and evolving proteins for specific functions. While sequence-based methods are promising for generate novel proteins, incorporating structure-oriented information improves success rate and helps target corresponding functions. Therefore, rather than relying solely on sequence or structure-based approaches, a consensus strategy is essential. Here, we introduce ProTokens, machine-learned “amino acids” derived from structural databases via self-supervised learning, providing a compact yet information-rich representation that bridges sequence and structure modalities. Instead of treating sequences and structures separately, we build PT-DiT, a multimodal diffusion transformer-based model that integrates both into a unified representation, enabling protein engineering in a joint sequence–structure space, streamlining the design process and facilitating the efficient encoding of 3D folds, contextual protein design, sampling of metastable states, and directed evolution for diverse objectives. Therefore, as a unified solution for in-silico protein engineering, PT-DiT leverages sequence and structure insights to realize functional protein design.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"129 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143979883","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
Advancement in Supercapacitors: Breaking Barriers and Shaping into Amazing Applications 超级电容器的进展:打破障碍,形成惊人的应用
IF 8.4 1区 化学
Chemical Science Pub Date : 2025-05-15 DOI: 10.1039/d5sc01955a
Sidhanath V. Bhosale, Sheshanath V. Bhosale
{"title":"Advancement in Supercapacitors: Breaking Barriers and Shaping into Amazing Applications","authors":"Sidhanath V. Bhosale, Sheshanath V. Bhosale","doi":"10.1039/d5sc01955a","DOIUrl":"https://doi.org/10.1039/d5sc01955a","url":null,"abstract":"Supercapacitors (Scs) displayed intrinsic advantages such as high-power density and high-rate capability but lower energy density. The development of advanced pseudocapacitive electrode materials is crucial for advancement in supercapacitor technologies. Such electrode materials significantly influence the performance of supercapacitors in electrical energy storage (EES) systems with respective energy density and cycling stabily. In this review, we first discussed, the EES technologies and their development and types of SCs, followed by overview of the importance of organic electrode materials for pseudocapacitor (PSC) applications. We also present principle of different redox-active organic molecules design strategy and their theoretical calculations in order to understand their electrochemical characteristics. Furthermore, we have highlighted redox-active organic electrode materials role in achieving wider potential voltage window and in turn higher energy density that enhance the electrochemical performance of PSCs. We have also discussed the role of molecular structure, their composition with electronic conducting materials and their structural and electrochemical performance relationship and highlighted the advantages and disadvantages of organic materials compared with traditional transition-metal oxide inorganic materials for PSCs. We give brief discussion on the advances in small redox-active molecular architecture and their use in fabrication of novel electrode materials including polymers, covalent organic frameworks and metal organic frameworks. We provided in depth how such material development from small redox-active molecules advances the charge-storage field and their applications to illuminate light emitting diodes as their application part. We are hoping this review article will help to provide fundamental basis to design and develop next-generation pseudocapacitive electrode materials from the renewable sources for sustainable supercapacitor systems with higher charge-storage capability.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"55 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143979850","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
Van der Waals Heterostructure via Spontaneous Self-Restacked Assembling for Enhanced Water Oxidation 通过自发自堆叠组装的范德华异质结构增强水氧化
IF 8.4 1区 化学
Chemical Science Pub Date : 2025-05-15 DOI: 10.1039/d5sc02417j
Rui Wang, Shuhui Li, Yang Hu, Shanshan Wu, Jiamin Zhu, Li An, Pinxian Xi, Chun-Hua Yan
{"title":"Van der Waals Heterostructure via Spontaneous Self-Restacked Assembling for Enhanced Water Oxidation","authors":"Rui Wang, Shuhui Li, Yang Hu, Shanshan Wu, Jiamin Zhu, Li An, Pinxian Xi, Chun-Hua Yan","doi":"10.1039/d5sc02417j","DOIUrl":"https://doi.org/10.1039/d5sc02417j","url":null,"abstract":"The pursuit of sustainable energy solutions has identified water oxidation as a crucial reaction, with the oxygen evolution reaction (OER) serving as a decisive efficiency determinant in water-technologies. This study presents a novel van der Waals (vdW) heterostructure catalyst, synthesized through a spontaneous self-restacked of nickel-iron-based phosphorus-sulfur compounds (NiPS₃ and FePS₃). Density Functional Theory (DFT) calculations underpinned the thermodynamic spontaneity of the restacking process, uncovering a semiconductor-to-metallic electronic transition that significantly amplifies electrocatalytic functionality. The catalyst demonstrates a remarkable OER performance, achieving a low overpotential of 257 mV at 20 mA cm⁻², a Tafel slope of 49 mV dec⁻¹, and demonstrates remarkable durability sustaining 500 mA cm⁻² for 140 hours. In addition to its high performance, the material's rapid reconstruction facilitated by surface electron enrichment and the release of phosphate and sulfate during OER underscores a dual enhancement in both activity and stability. The universality of the synthesis method is further demonstrated by extending the approach to other MPS₃ materials (M = Mn, Co, Zn), establishing a generalized platform for developing high-performance OER catalysts. This work represents a significant advancement in the application of restacked vdW heterostructures as a foundation for advanced electrocatalytic materials.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"124 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143979851","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
Generation and UV-photolysis of N-methyleneformamide n -亚甲酰胺的生成与紫外光解
IF 8.4 1区 化学
Chemical Science Pub Date : 2025-05-15 DOI: 10.1039/d5sc02777b
Viktor Paczelt, Vladimir Drabkin, Daniel Kühn, André K. Eckhardt
{"title":"Generation and UV-photolysis of N-methyleneformamide","authors":"Viktor Paczelt, Vladimir Drabkin, Daniel Kühn, André K. Eckhardt","doi":"10.1039/d5sc02777b","DOIUrl":"https://doi.org/10.1039/d5sc02777b","url":null,"abstract":"Simple imines, including N-methyleneformamide, are key to larger biological compounds. This study revisits its formation via high-vacuum flash pyrolysis and characterizes it using cryogenic matrix isolation IR and UV/Vis spectroscopy. Its stability, decomposition products, and relevance to interstellar and prebiotic chemistry are supported by experiments and computational analysis.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"14 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143979885","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
Introduction of flavin anions into photoredox catalysis: Acid-base equilibria of lumichrome allows photoreductions with an anion of an elusive 10-unsubstituted isoalloxazine 黄素阴离子引入光氧化还原催化:光色的酸碱平衡允许光还原与一个难以捉摸的10-未取代异alloxazine阴离子
IF 8.4 1区 化学
Chemical Science Pub Date : 2025-05-15 DOI: 10.1039/d5sc01630d
Dorota Prukała, Ekaterina Zubova, Eva Svobodova, Ludmila Šimková, Naisargi Varma, Josef Chudoba, Jiri Ludvik, Gotard Burdzinski, Iwona Gulaczyk, Marek Sikorski, Radek Cibulka
{"title":"Introduction of flavin anions into photoredox catalysis: Acid-base equilibria of lumichrome allows photoreductions with an anion of an elusive 10-unsubstituted isoalloxazine","authors":"Dorota Prukała, Ekaterina Zubova, Eva Svobodova, Ludmila Šimková, Naisargi Varma, Josef Chudoba, Jiri Ludvik, Gotard Burdzinski, Iwona Gulaczyk, Marek Sikorski, Radek Cibulka","doi":"10.1039/d5sc01630d","DOIUrl":"https://doi.org/10.1039/d5sc01630d","url":null,"abstract":"Flavins have been established as effective catalysts in oxidative photoredox catalysis. Conversely, their use in reductive photocatalysis remains limited, mainly due to the relatively low stability of the transient flavin radicals (semiquinones), which are used in photoreductions. The fully reduced forms of flavins are also disadvantaged in photocatalysis because they absorb light in UV rather than in visible region. In this work, we present a new approach for reductive flavin photocatalysis that utilises a flavin (isoalloxazine) anion derived from the elusive 10-unsubstituted 3,7,8-trimethylisoalloxazine, an unstable tautomer of 3-methyllumichrome. We found the conditions under which this isoalloxazine anion is formed by in-situ deprotonation/isomerisation from the readily available 3-methyllumichrome and we subsequently used it as a photoredox catalyst in the reductive dehalogenation of activated bromoarenes and their C-P coupling reaction with trimethyl phosphite to form an arylphosphonate. Steady-state and transient spectroscopy, NMR and cyclic voltammetry investigations, together with quantum chemical calculations, showed that the anion of oxidised isoalloxazine has several advantages, compared to other forms of flavins used in photoreductions, such as high stability, even in the presence of oxygen, an absorption maximum in the visible region, thereby allowing the use of excitation light between 470 and 505 nm, and a relatively long-lived singlet excited-state.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"149 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143979887","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
Interrogating the Missing Links in Tandem CO2 Hydrogenation: Role of Intermediate Transfer, Active Site Proximity, and Ion Exchange in Zeolites 对串联CO2加氢过程中缺失环节的探究:沸石中中间体转移、活性位点接近和离子交换的作用
IF 8.4 1区 化学
Chemical Science Pub Date : 2025-05-15 DOI: 10.1039/d5sc01653c
Fatima Mahnaz, Andrew Iovine, Manish Shetty
{"title":"Interrogating the Missing Links in Tandem CO2 Hydrogenation: Role of Intermediate Transfer, Active Site Proximity, and Ion Exchange in Zeolites","authors":"Fatima Mahnaz, Andrew Iovine, Manish Shetty","doi":"10.1039/d5sc01653c","DOIUrl":"https://doi.org/10.1039/d5sc01653c","url":null,"abstract":"The tandem hydrogenation of CO2 to fuels and chemicals using bifunctional oxide/zeolite catalysts offers a promising strategy for reducing anthropogenic CO2 emissions while generating sustainable alternatives to fossil fuels. Despite significant advancements in this field, fundamental gaps remain in understanding the inflence of active site-proximity, intermediate transport rates, and the metal oxide migration and their ion-exchange with zeolitic Brønsted acid sites (BAS) on reaction rates and hydrocarbon (HC) product selectivities. Challenges also include high CO selectivity and understanding the complexities of hydrocarbon pool (HCP) propagation in zeolite pore channels. This perspective integrates insights from analogous bifunctional catalytic systems, such as alkane hydrocracking and isomerization, to refine our understanding of site-proximity and transport artifacts on reaction rates and product selectivities. We examine diffusion-reaction formalisms for elucidating site-proximity effects on rates and HC selectivity, discuss methods to suppress CO selectivity using surface organometallic chemistry (SOMC) approaches, and explore strategies for suppressing ion-exchange and tuning HCP dynamics. By addressing these challenges, we outline a conceptual roadmap for advancing tandem CO2 hydrogenation chemistry, providing potential strategies to enhance catalytic efficiency of bifunctional oxide/zeolite systems.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"199 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143979884","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
Atomic Ni-doped ZrO2 with subnanometric Fe clusters for tandem C–C bond cleavage and coupling 原子ni掺杂ZrO2与亚纳米铁簇的串联C-C键解理和偶联
IF 8.4 1区 化学
Chemical Science Pub Date : 2025-05-14 DOI: 10.1039/d5sc02215k
Xin Zhao, Jie Wen, Qiang Qian, Dawang Tang, Fengliang Wang, Ruiqi Fang, Changzhi Li, Yingwei Li
{"title":"Atomic Ni-doped ZrO2 with subnanometric Fe clusters for tandem C–C bond cleavage and coupling","authors":"Xin Zhao, Jie Wen, Qiang Qian, Dawang Tang, Fengliang Wang, Ruiqi Fang, Changzhi Li, Yingwei Li","doi":"10.1039/d5sc02215k","DOIUrl":"https://doi.org/10.1039/d5sc02215k","url":null,"abstract":"The sustainable valorization of lignin β-O-4 compounds into high-value natural products through one-pot tandem catalysis presents an urgent yet scientifically challenging frontier in biomass conversion. Herein, we report a mesoporous Fe3@Ni1-ZrO2 catalyst featuring subnanometric Fe-O clusters anchored on atomic Ni-doped ZrO2 nanosheets. This engineered architecture enables the one-pot tandem conversion of lignin β-O-4 segments to flavones under aerobic and base-free conditions, delivering 56.2% yield with a space-time yield (STY) of 3.3 g·gcat−1·h−1 in continuous flow operation. Moreover, the system demonstrates exceptional substrate versatility through efficient conversion of diverse lignin β-O-4 dimers and substituted 2’-phenoxyacetophenones into bioactive flavones. Mechanistic investigations combining controlled experiments and density functional theory (DFT) calculations reveal a cooperative catalytic mechanism, i.e., ZrO2 nanosheets mediate selective oxidative cleavage of C‒C bond in β-O-4 segments, and subnanometric Fe3 clusters activate aldol condensation of cleavage intermediates, while atomic Ni sites suppress competing pathways to govern the selectivity. This synergistic interplay within the Fe3@Ni1-ZrO2 framework establishes a robust catalytic microenvironment to enable the high-efficiency tandem process.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"52 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946011","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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