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Supramolecular catalysis enabled by chiral molecular cages with anion-π interaction capability 具有阴离子-π相互作用能力的手性分子笼实现了超分子催化
IF 8.9 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-09-06 DOI: 10.1016/j.cclet.2025.111796
Jinchen Li , Tangxin Xiao , Kai Diao , Zhouyu Wang , Leyong Wang
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引用次数: 0
Linear paired electrolysis enables redox-neutral benzylation of N-heteroarenes with benzyl halides using ion resin as the recyclable electrolyte 采用离子树脂作为可循环电解质,实现了n -杂芳烃与卤苄的氧化还原-中性苄基化反应
IF 8.9 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-09-06 DOI: 10.1016/j.cclet.2025.111795
Yan-Cui Wen , Jia-Cheng Hou , Qian Zhou , Sheng-Hua Wang , Jun Jiang , Zi Yang , Hai-Tao Zhu , Zu-Li Wang , Wei-Min He
Herein, we have developed a sustainable linear paired electrolysis strategy for the redox-neutral benzylation of N-heteroarenes with benzyl halides using solid ion resin as the recyclable electrolyte. This method sufficiently utilizes both cathodic and anodic reactions to produce a variety of benzylated N-heteroarenes, features high atom- and step-economy, excellent energy efficiency, operational simplicity, good functional group tolerance, mild conditions and no requirement of sacrifice reagent and base additive. Importantly, the inexpensive and commercially available solid ion resin electrolyte was validated in both gram-scale synthesis and electrolyte cycling experiment. We hope this strategy not only provides a sustainable synthetic strategy for benzylated compounds but also develops the further utilization of ion resin in electrosynthesis as well as linear paired electrolysis.
在此,我们开发了一种可持续的线性配对电解策略,用于n -杂芳烃与苄基卤化物的氧化还原-中性苄基化,使用固体离子树脂作为可回收电解质。该方法充分利用阴极和阳极反应制备多种苄基化n -杂芳烃,具有原子经济性和阶梯经济性高、能源效率优异、操作简单、官能团耐受性好、条件温和、不需要牺牲试剂和碱添加剂等特点。重要的是,廉价且可商用的固体离子树脂电解质在克级合成和电解质循环实验中得到了验证。我们希望这一策略不仅为苯基化化合物的可持续合成提供了一种策略,而且也为离子树脂在电合成和线性配对电解中的进一步利用提供了途径。
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引用次数: 0
Digital microfluidics actuated multiplexed heterogeneous immunoassay with enhanced automation and efficiency 数字微流体驱动多路异质免疫分析,提高自动化和效率
IF 8.9 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-09-05 DOI: 10.1016/j.cclet.2025.111788
Mengyuan Zhao , Xianming Liu , Haiyue Ye , Dachuan Ma , Yue Hou , Hongyu Dong , Yangyang Long , Ningning Liu , Xiaoxu Wang , Xiaodan Yu , Yahong Chen , Xinmiao Liang , Yao Lu
Digital microfluidics (DMF) shows great promise in addressing the need for miniaturization and automation in immunoassay detection. Despite recent advances, an automatically operated, multiplexed heterogeneous immunoassay platform powered by DMF remains underdeveloped. Here we present a DMF platform for automated and multiplexed heterogeneous immunoassay detection by coupling spatial barcoding with automatic and uniform droplet dispensing. FluoroPel was selected as a robust hydrophobic reagent for coating the DMF top plate, and it also served as the substrate for the immuno-reaction. Its mechanical robustness was further enhanced with a Cytop CTL-809A adhesive layer under the top hydrophobic layer. Hourglass-shaped electrode patterns ensured consistent and uniform distribution of immunoassay reagents, with volume variation down to 1.0 %. The analysis duration was significantly reduced from 75 min to 20 min after a heating module was integrated to elevate the immuno-reaction temperature to 37 °C. Utilizing a compact instrument featuring a multi-droplet manipulation protocol, we successfully implemented fully operated, multi-sample, multiplexed immunoassays using recombinant proteins on cell culture supernatants on the DMF platform. This innovative platform significantly enhances the efficiency, reliability, and degree of automation of DMF-actuated multiplexed heterogeneous immunoassays, potentially providing a viable solution for field deployment and multi-sample parallel diagnosis.
数字微流控技术(DMF)在解决免疫分析检测小型化和自动化的需求方面显示出巨大的前景。尽管最近取得了一些进展,但由DMF驱动的自动操作、多路异构免疫分析平台仍然不发达。在这里,我们提出了一个DMF平台,通过耦合空间条形码和自动均匀的液滴分配,实现自动化和多路异构免疫分析检测。选用FluoroPel作为涂覆DMF顶板的强力疏水性试剂,同时也作为免疫反应的底物。在顶部疏水层下添加Cytop CTL-809A胶粘剂层,进一步增强了其机械坚固性。沙漏形电极图案保证了免疫测定试剂的均匀分布,体积变化可达1.0 %。在集成加热模块将免疫反应温度提高到37 °C后,分析时间从75 min显著减少到20 min。利用具有多液滴操作协议的紧凑仪器,我们成功地在DMF平台上的细胞培养上清液上使用重组蛋白进行了全操作、多样本、多路免疫分析。这个创新的平台显著提高了dmf驱动的多路异构免疫分析的效率、可靠性和自动化程度,可能为现场部署和多样本并行诊断提供可行的解决方案。
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引用次数: 0
Asymmetric catalysis for the synthesis of planar chiral ferrocene derivatives 平面手性二茂铁衍生物的不对称催化合成
IF 8.9 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-09-05 DOI: 10.1016/j.cclet.2025.111793
Haitao Liu, Youlin Deng, Dan Ling, Lingzhu Chen, Zhichao Jin
The asymmetric catalytic synthesis of planar chiral ferrocene derivatives has received dramatic attention in recent years. Transition metal-catalyzed asymmetric cross-coupling reactions and CH functionalization reactions have played significant roles in the stereoselective construction of planar chiral ferrocene derivatives. Transition metals such as copper, palladium, rhodium, iridium, gold, and platinum have been adopted as the effective catalysts in combination with various chiral ligands to achieve satisfactory yields and stereoselectivity. Organic catalysts have also shown great potential in the synthesis of planar chiral ferrocenes. Chiral amines and N-heterocyclic carbenes (NHCs) have been the key catalysts for facile access to multi-functional ferrocene derivatives. Some of the planar chiral ferrocene molecules obtained from the above methods have demonstrated promising applications in the development of novel ligands for asymmetric synthesis and pesticides for plant protection. This review provides an overview on the key progresses in the catalytic synthesis of planar chiral ferrocene derivatives using transition metal catalysts and organic catalysts. The merits, challenges and potential directions in the future development within this highly active research field are also discussed at the end of this review.
不对称催化合成平面手性二茂铁衍生物是近年来研究的热点。过渡金属催化的不对称交叉偶联反应和CH功能化反应在平面手性二茂铁衍生物的立体选择性构建中起着重要作用。铜、钯、铑、铱、金、铂等过渡金属与各种手性配体结合作为有效催化剂,获得了满意的产率和立体选择性。有机催化剂在平面手性二茂铁的合成中也显示出巨大的潜力。手性胺和n -杂环碳烯是制备多功能二茂铁衍生物的关键催化剂。通过上述方法获得的一些平面手性二茂铁分子在开发新型不对称合成配体和植物保护用农药方面具有广阔的应用前景。综述了过渡金属催化剂和有机催化剂催化合成平面手性二茂铁衍生物的研究进展。最后对这一活跃研究领域的优点、面临的挑战和未来发展的潜在方向进行了讨论。
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引用次数: 0
Enhancing photovoltaic performance via γ-positioned side-chains engineering of Y-series non-fullerene acceptors 通过y系列非富勒烯受体的γ定位侧链工程提高光伏性能
IF 8.9 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-09-05 DOI: 10.1016/j.cclet.2025.111787
Ruixiang Fang , Yilan Zhai , Huijuan Bi , Caixuan Wang , Ailing Tang , Shiming Zhang , Zhixiang Wei , Kun Lu
In the field of organic solar cells (OSCs), side-chain engineering is a key strategy for developing high-performance non-fullerene small molecule acceptors (SMAs), which could adjust the material solubility and modulate the intermolecular stacking properties, profoundly impacting the film morphology and thus acting on the final power conversion efficiency (PCE) of the materials. In this study, two asymmetric acceptor molecules, Qx-PhBr-BO and Qx-PhBr-X, were synthesized by migrating the branching site of the outer side chain from the β-site to the γ-site. The branching site located at the γ-site could reduce the steric-hindrance effect and enhance the molecular aggregation behavior, giving rise to redshifted absorption and tight π-π stacking. Morphology analysis shows that the Qx-PhBr-X-based devices have smoother surfaces and a phase-separated structure, which is more favorable for charge transport and extraction. The Qx-PhBr-X-based devices exhibit balanced hole-electron mobility, efficient exciton dissociation, and low charge recombination. As a result, Qx-PhBr-X with γ-site branching exhibits superior photovoltaic performance with a PCE of 17.16 %, which is significantly higher than that of Qx-PhBr-BO at 16.28 %. These results highlight the importance of side-chain modifications for optimizing OSC efficiency and provide an important reference for precise tuning of side-chain structures in future molecular design.
在有机太阳能电池(OSCs)领域,侧链工程是开发高性能非富勒烯小分子受体(SMAs)的关键策略,它可以调节材料的溶解度和分子间的堆叠特性,深刻影响薄膜的形态,从而影响材料的最终功率转换效率(PCE)。本研究将Qx-PhBr-BO和Qx-PhBr-X两个不对称受体分子通过将外侧链的分支位点从β-位点迁移到γ-位点合成。位于γ-位点的支化位点降低了空间位阻效应,增强了分子的聚集行为,产生了红移吸收和紧密的π-π堆积。形貌分析表明,qx - phbr - x基器件表面光滑,具有相分离结构,更有利于电荷输运和萃取。基于qx - phbr - x的器件具有平衡的空穴电子迁移率,高效的激子解离和低电荷复合。结果表明,具有γ-位点支化的Qx-PhBr-X的PCE为17.16 %,显著高于Qx-PhBr-BO的16.28 %。这些结果突出了侧链修饰对优化盐碳效率的重要性,并为未来分子设计中侧链结构的精确调整提供了重要参考。
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引用次数: 0
Thermo-photocatalytic CO2 conversion with H2O to C2 products in a continuous process by ZIF-67/biochar composites ZIF-67/生物炭复合材料热光催化CO2与H2O连续转化为C2产物
IF 8.9 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-09-02 DOI: 10.1016/j.cclet.2025.111781
Xia Jiang , Yan-Xin Chen , Rui Chen , Hao-Yan Shi , Ke-Xian Li , Wen-Ya Zhong , Jian-Feng Li , Can-Zhong Lu
Thermo-photocatalytic CO2 conversion to C2 products exhibits high research value and industrial potential. Enhancing the catalyst’s adsorption activation for CO2 and H2O, along with multistep proton-coupled electron transfer (PCET) and C-C coupling, is crucial for achieving thermo-photocatalytic CO2 reduction conversion to C2 products with H2O as a proton source in a continuous process. In this paper, we explore a novel approach utilizing biochar to obtain catalysts with more defects and combine reducing biochar with MOF Materials (ZIF-67) to get a composite (ZIF-67/PC) with substantial CO2 and H2O adsorption activation capabilities and electron density gradients. Compared to PC and ZIF-67, the ZIF-67/PC exhibited excellent catalytic performance, particularly in obtaining a certain amount of C2 products (yield 5.59 µmol g-1 h-1, selectivity 55.96%). We also investigated the structure-function relationship of the catalyst and the contributions of thermal and light effects to the catalytic reaction, aiming to guide the establishment of efficient, high-throughput catalytic CO2 conversion technologies.
热光催化CO2转化为C2产品具有很高的研究价值和工业潜力。提高催化剂对CO2和H2O的吸附活性,以及多步质子耦合电子转移(PCET)和C-C耦合,是实现以H2O为质子源的连续过程中热光催化CO2还原转化为C2产物的关键。在本文中,我们探索了一种利用生物炭获得缺陷更多的催化剂的新方法,并将还原性生物炭与MOF材料(ZIF-67)结合,得到具有较强的CO2和H2O吸附活化能力和电子密度梯度的复合材料(ZIF-67/PC)。与PC和ZIF-67相比,ZIF-67/PC表现出优异的催化性能,特别是在获得一定量的C2产物时(产率5.59µmol g-1 h-1,选择性55.96%)。我们还研究了催化剂的结构-功能关系以及热效应和光效应对催化反应的贡献,旨在指导建立高效、高通量的催化CO2转化技术。
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引用次数: 0
Covalent organic framework ionomers enable synergistic efficient transport of protons and oxygen in medium-temperature proton exchange membrane fuel cells 共价有机骨架离聚体在中温质子交换膜燃料电池中实现了质子和氧的协同高效传输
IF 8.9 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-09-02 DOI: 10.1016/j.cclet.2025.111784
Zijie Lin, Qing Li
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引用次数: 0
Enantioconvergent reductive amidation of benzyl ammonium salts for synthesis of α-chiral amides 苄基铵盐的对映收敛还原酰胺化合成α-手性酰胺
IF 8.9 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-09-01 DOI: 10.1016/j.cclet.2025.111779
Saima Perveen , Xicheng Wang , Tao Li , Linghua Wang , Shuai Zhang , Yizhao Ouyang , Xue Zhao , Liang Xu , Pengfei Li
α-Chiral amides are common in pharmaceuticals, agrochemicals, natural products, and peptides, prompting the need for new synthetic methods. Here, we introduce a nickel-catalyzed asymmetric reductive amidation method to synthesize α-chiral amides from benzyl ammonium salts and isocyanates. The key to success is using a chiral 2,2′-bipyridine ligand (-)-Ph-SBpy, enabling high yield (up to 95 %) and enantiomeric ratio (up to 98:2 er) under mild conditions. Addition of phenol prevents isocyanate polymerization by reversibly forming a carbamate intermediate, enhancing selectivity and efficiency. The synthetic utility is showcased through transformations of the enantioenriched amides, and the mechanism and enantioselectivity are supported by experimental and computational studies.
α-手性酰胺在医药、农用化学品、天然产物和多肽中都很常见,这促使人们需要新的合成方法。本文介绍了以苯基铵盐和异氰酸酯为原料,镍催化不对称还原酰胺化合成α-手性酰胺的方法。成功的关键是使用手性2,2 ' -联吡啶配体(-)- ph - sbpy,在温和的条件下实现高收率(高达95% %)和对映体比(高达98:2 er)。苯酚的加入通过可逆地形成氨基甲酸酯中间体来防止异氰酸酯聚合,提高了选择性和效率。通过对映体富集酰胺的转化,展示了其合成效用,并通过实验和计算研究支持了其机理和对映体选择性。
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引用次数: 0
Decatungstate-photocatalyzed heterogeneous direct benzylation of N-heterocycles with benzaldehydes 十钨酸盐光催化n -杂环与苯甲醛的非均相直接苄基化反应
IF 8.9 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-08-31 DOI: 10.1016/j.cclet.2025.111776
Yan-Yan Zeng , Jun Jiang , Yan-Cui Wen , Chun-Lin Zhuang , Li-Juan Ou , Zi Yang , Hai-Tao Zhu , Zu-Li Wang , Wei-Min He
The first example of heterogeneous direct benzylation of N-heterocycles (quinoxalin-2(1H)-ones and quinoxalines) with benzaldehydes has been accomplished via the sequence of a NaDT-photocatalyzed HAT, a single electron transfer reduction and a proton transfer, a spin-center shift and a back-HAT. Utilizing this strategy, a diverse array of benzylated N-heterocycles (29 examples) can be produced with high yields. Importantly, the DT-photocatalyzed direct benzylation with benzaldehydes would be a useful complement to the more extensively studied DT-photocatalyzed acylation and hydroxyalkylation, expanding the scope of DT photocatalysis.
通过nadt光催化的HAT、单电子转移还原和质子转移、自旋中心移位和反向HAT,实现了n-杂环(喹啉-2(1H)-ones和喹啉)与苯甲醛的非均相直接苄基化的第一个例子。利用这一策略,可以以高收率生产各种各样的苯基化n -杂环(29个例子)。重要的是,DT光催化与苯甲醛的直接苄基化将是对更广泛研究的DT光催化酰化和羟烷基化的有益补充,扩大了DT光催化的范围。
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引用次数: 0
One-step synthesis of trimetallic PdCuNi porous nanoflowers for enhanced alcohol oxidation 一步法合成三金属PdCuNi多孔纳米花增强醇氧化
IF 8.9 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-08-26 DOI: 10.1016/j.cclet.2025.111756
Xinyu Gu , Jun Yu , Huiyu Sun , Nannan Zhang , Zhengying Wu , Yukou Du
The three-dimensional (3D) Pd-based nanoflower structures, assembled from two-dimensional (2D) nanosheets, are characterized by their stable and ordered configurations. These structures have been extensively designed as anode materials for fuel cells. However, the exploration of trimetallic nanoflowers with porous architectures remains limited. In this study, we present a straightforward one-step solvothermal method for the synthesis of trimetallic PdCuNi porous nanoflowers (PNFs). Leveraging several unique advantages, such as an open superstructure, high porosity, and enhanced electronic interactions among the trimetals, the resulting PdCuNi PNFs demonstrate significantly improved electrochemical performance, with mass activities reaching 5.94 and 10.14 A/mg for the ethanol oxidation reaction (EOR) and the ethylene glycol oxidation reaction (EGOR), respectively. Furthermore, the PdCuNi PNFs exhibit optimized d-band centers and the most negative onset oxidation potential, indicating enhanced antitoxicity and stability. This study not only provides a novel perspective on the synthesis of 3D porous nanomaterials but also highlights the potential application value of trimetallic nanoalloys in catalysis.
三维(3D)基于pd的纳米花结构,由二维(2D)纳米片组装而成,具有稳定有序的结构特征。这些结构已被广泛设计为燃料电池的阳极材料。然而,具有多孔结构的三金属纳米花的探索仍然有限。在这项研究中,我们提出了一种简单的一步溶剂热合成三金属PdCuNi多孔纳米花(PNFs)的方法。利用开放的上层结构、高孔隙度和增强的三金属之间的电子相互作用等独特优势,所制得的PdCuNi PNFs具有显著提高的电化学性能,在乙醇氧化反应(EOR)和乙二醇氧化反应(EGOR)中分别达到5.94和10.14 A/mg的质量活性。此外,PdCuNi PNFs具有优化的d波段中心和最负的氧化电位,表明其抗毒性和稳定性增强。该研究不仅为三维多孔纳米材料的合成提供了新的视角,而且突出了三金属纳米合金在催化方面的潜在应用价值。
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引用次数: 0
期刊
Chinese Chemical Letters
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