Angewandte Chemie最新文献

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Switchable Closed-Shell and Open-Shell Biradical States in Bis-Palladium Complexes of Tetrathiadodecaphyrin via Coordination Rearrangement 通过配位重排的四硫代葡萄蛋白双钯配合物中可切换的闭壳和开壳双基态
Angewandte Chemie Pub Date : 2025-04-08 DOI: 10.1002/ange.202504774
Chengming Li, Linfeng He, Gang Xu, Yongjie Zhou, Qiong Wu, Kaizhi Li, Jiayin Yang, Zhen Shen, Jingsong You
{"title":"Switchable Closed-Shell and Open-Shell Biradical States in Bis-Palladium Complexes of Tetrathiadodecaphyrin via Coordination Rearrangement","authors":"Chengming Li,&nbsp;Linfeng He,&nbsp;Gang Xu,&nbsp;Yongjie Zhou,&nbsp;Qiong Wu,&nbsp;Kaizhi Li,&nbsp;Jiayin Yang,&nbsp;Zhen Shen,&nbsp;Jingsong You","doi":"10.1002/ange.202504774","DOIUrl":"https://doi.org/10.1002/ange.202504774","url":null,"abstract":"<p>A figure-eight tetrathiadodecaphyrin (<b>1</b>), featuring two porphyrin-like sub-pockets separated by central carbazolylenes was synthesized. Metalation of the thiaporphyrinoid ligand with Pd(OAc)<sub>2</sub> produces two distinct bis-Pd(II) complexes with different coordination environments. Complex <b>2</b>, adopting an {NNCS} metalation mode, exhibits a closed-shell electronic structure, whereas complex <b>3</b>, with an {NNCC} coordination environment, exists as a ligand-centered organic biradicaloid with two magnetically independent spins (<i>S</i> = 1/2). Biradical formation is attributed to single-electron transfer from each ligand sub-pocket to the Pd(II) center accommodated in a d<sup>8</sup> square-planner coordination geometry. Notably, the complexes are interconvertible through doubly one-electron redox processes, demonstrating a reversible metal coordination rearrangement via thiophene ring flipping within a porphyrinoid framework. This work establishes the first example of such tunable metal coordination, offering a precise strategy for modulating closed-shell and open-shell biradical states. In addition, while complex <b>2</b> displays intense absorption and photoacoustic responses to the first near-infrared (NIR-I) light in water after encapsulation within nanoparticles, the nanocomposites encapsulating biradicaloid <b>3</b> exhibits enhanced responsiveness in the second near-infrared (NIR-II) region.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Solar-Driven Reversible Hydrogen Storage of Sodium Cyclohexanolate/Phenoxide Pair 太阳能驱动的环己酸钠/苯氧化合物对可逆储氢
Angewandte Chemie Pub Date : 2025-04-08 DOI: 10.1002/ange.202506275
Khai Chen Tan, Qijun Pei, Jiafeng Yu, Lin Liu, Jiayin Li, Li Han, Yang Yu, Zhao Li, Alexis Munyentwali, Jiaquan Guo, Yuting Wang, Li Rao, Teng He, Ping Chen
{"title":"Solar-Driven Reversible Hydrogen Storage of Sodium Cyclohexanolate/Phenoxide Pair","authors":"Khai Chen Tan,&nbsp;Qijun Pei,&nbsp;Jiafeng Yu,&nbsp;Lin Liu,&nbsp;Jiayin Li,&nbsp;Li Han,&nbsp;Yang Yu,&nbsp;Zhao Li,&nbsp;Alexis Munyentwali,&nbsp;Jiaquan Guo,&nbsp;Yuting Wang,&nbsp;Li Rao,&nbsp;Teng He,&nbsp;Ping Chen","doi":"10.1002/ange.202506275","DOIUrl":"https://doi.org/10.1002/ange.202506275","url":null,"abstract":"<p>Reversible hydrogen storage is a key challenge for the implementation of hydrogen energy, with dehydrogenation being particularly difficult because of its endothermic nature, slow kinetics, poor selectivity, etc. Solar energy-driven hydrogen uptake/release represents an interdisciplinary approach that provides an effective solution to those problems. Herein, we report the solar-driven reversible hydrogen uptake of 4.9 wt.% over sodium cyclohexanolate/phenoxide pair, achieving over 99.9% conversion and selectivity in both hydrogenation and dehydrogenation via photocatalysis without external heating. Notably, the initial dehydrogenation rate reaches 23.4 <span></span><math></math> that is ca. 2 orders of magnitude higher than thermocatalysis. The superior photocatalytic performance stems from the synergy between high- and low-frequency light, i.e., low-frequency light mainly provides heat, high-frequency light drives the desorption of product from the catalyst surface. This approach offers a path toward a sustainable solar-driven hydrogen energy system.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DNA Nanotubule-Based Nanodevices with ATP-Responsive Gating for Direct Cytosolic Delivery of Nucleic Acids and Proteins 基于DNA纳米管的纳米器件与atp响应门控,用于核酸和蛋白质的直接胞质递送
Angewandte Chemie Pub Date : 2025-04-08 DOI: 10.1002/ange.202505290
Di Gao, Ziqi Xu, Xiangli Li, Yuhan Zhao, Qianhao Min, Zixuan Chen, Qin Xu, Ye Tian, Junpeng Xu, Jun-Jie Zhu
{"title":"DNA Nanotubule-Based Nanodevices with ATP-Responsive Gating for Direct Cytosolic Delivery of Nucleic Acids and Proteins","authors":"Di Gao,&nbsp;Ziqi Xu,&nbsp;Xiangli Li,&nbsp;Yuhan Zhao,&nbsp;Qianhao Min,&nbsp;Zixuan Chen,&nbsp;Qin Xu,&nbsp;Ye Tian,&nbsp;Junpeng Xu,&nbsp;Jun-Jie Zhu","doi":"10.1002/ange.202505290","DOIUrl":"https://doi.org/10.1002/ange.202505290","url":null,"abstract":"<p>Delivering biomacromolecules to the cytosol remains a formidable challenge, as these molecules are predominantly sequestered within endosomes after endocytosis. The limited efficacy of current delivery systems in promoting reliable endosomal escape underscores the need for innovative strategies. Here, we report a DNA origami nanotubule to construct transmembrane delivery nanodevices with size-selective gating and ATP-responsive channel activation. By integrating unilamellar vesicles as large storage compartments, these nanodevices can encapsulate a wide range of macromolecules, including small interfering RNA, messenger RNA, plasmid DNA, and CRISPR-Cas9 ribonucleoprotein complexes. By bypassing traditional endocytic pathways, the nanotubules enable the delivery of substantial payload quantities directly across the plasma membrane. This approach provides a promising platform for delivering macromolecular therapeutics into the cytosol, advancing gene therapy strategies, and broadening their biomedical applications.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nitrogen Insertion via Asymmetric Condensation and Chirality Transfer: A Stereodivergent Entry to Cyanocyclopropanes 通过不对称缩合和手性转移的氮插入:氰环丙烷的立体发散入口
Angewandte Chemie Pub Date : 2025-04-08 DOI: 10.1002/ange.202503056
Marlene Arnold M.Sc., Jasmin Hammes M.Sc., Mike Ong, Christian Mück-Lichtenfeld, Johannes M. Wahl
{"title":"Nitrogen Insertion via Asymmetric Condensation and Chirality Transfer: A Stereodivergent Entry to Cyanocyclopropanes","authors":"Marlene Arnold M.Sc.,&nbsp;Jasmin Hammes M.Sc.,&nbsp;Mike Ong,&nbsp;Christian Mück-Lichtenfeld,&nbsp;Johannes M. Wahl","doi":"10.1002/ange.202503056","DOIUrl":"https://doi.org/10.1002/ange.202503056","url":null,"abstract":"<p>The condensation of prochiral cyclobutanones and diphenylphosphinyl hydroxylamine is achieved under Brønsted acid catalysis. Interestingly, the competing aza-Baeyer–Villiger reaction is completely suppressed and the axially chiral oxime esters can be isolated in excellent yield and selectivity (up to 96% yield, up to 97:3 er). Computational analysis highlights the crucial role of the Brønsted acid in facilitating a successful condensation. Building on the inherent reactivity of the corresponding oxime esters, a one-pot protocol toward cyanocyclopropanes was discovered, which establishes two consecutive stereocenters. This unusual ring contraction is triggered by strong base and permits an axial-to-point chirality transfer with good enantiospecificity (up to 98% es). Fine-tuning the reaction parameters enables stereodivergent access to both diastereomers of the cyanocyclopropanes, and the utility of this method is demonstrated through the formal synthesis of the drug tasimelteon.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ange.202503056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Selective Leaflet-Anchored DNA Nanoprobes for Simultaneous Monitoring of Juxta-Plasma Membrane Environments 同时监测近质膜环境的选择性小片锚定DNA纳米探针
Angewandte Chemie Pub Date : 2025-04-08 DOI: 10.1002/ange.202425335
Yao He, Jie Lin, Fandi Wu, Yong-Hao Ma, Zhaoyang Wang, Hui Wu, Zhimin Wang, Nachuan Wen, Yutong Zhang, Wenfei Guo, Yulin Du, Weihong Tan, Liping Qiu
{"title":"Selective Leaflet-Anchored DNA Nanoprobes for Simultaneous Monitoring of Juxta-Plasma Membrane Environments","authors":"Yao He,&nbsp;Jie Lin,&nbsp;Fandi Wu,&nbsp;Yong-Hao Ma,&nbsp;Zhaoyang Wang,&nbsp;Hui Wu,&nbsp;Zhimin Wang,&nbsp;Nachuan Wen,&nbsp;Yutong Zhang,&nbsp;Wenfei Guo,&nbsp;Yulin Du,&nbsp;Weihong Tan,&nbsp;Liping Qiu","doi":"10.1002/ange.202425335","DOIUrl":"https://doi.org/10.1002/ange.202425335","url":null,"abstract":"<p>The cell membrane functions as a bidirectional interface that coordinates the selective transport of substances and information between the interior and exterior of the cell. Simultaneous monitoring of both the inner and outer local environments surrounding this lipid bilayer is crucial for elucidating various cellular activities but significantly challenged by the lack of technologies capable of precisely engineering biosensing probes on both membrane leaflets. In this work, by developing fusogenic nanoliposomes with high cell fusion efficiency, we successfully anchored amphiphilic DNA tetrahedral probes onto the inner leaflet of the plasma membrane. By integrating this with the direct anchoring of amphiphilic probes on the outer leaflet, we achieved precise functionalization of both leaflets of the cell membrane, thus enabling simultaneous monitoring of localized targets within their respective juxta-plasma membrane environments, avoiding signal contamination caused by the optical diffraction limit. Using selectively dual-leaflet-anchored tetrahedral DNAzyme probes, we revealed that the transmembrane ion channel SLC41A1 synergistically modulated the influx of Na<sup>+</sup> and the efflux of Mg<sup>2+</sup> in live cells. With a modular design, this membrane-anchored DNA nanoplatform can be readily extended for the study of bilateral interface-dominant cellular processes, shifting the paradigm toward a more localized and subtle perspective.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Boron Doping-Induced Ultrahigh Ce3+ Ratio in Amorphous CeO2/GO Catalyst for Low-Concentration CO2 Photoreduction 硼掺杂诱导非晶态CeO2/GO催化剂中超高Ce3+比例的低浓度CO2光还原
Angewandte Chemie Pub Date : 2025-04-08 DOI: 10.1002/ange.202505668
Yanhong Li, Qian Yin, Binbin Jia, Huiqing Wang, Hongfei Gu, Qi Hu, Haosen Yang, Tianqi Guo, Pengfei Hu, Lidong Li, Li-Min Liu, Lin Guo
{"title":"Boron Doping-Induced Ultrahigh Ce3+ Ratio in Amorphous CeO2/GO Catalyst for Low-Concentration CO2 Photoreduction","authors":"Yanhong Li,&nbsp;Qian Yin,&nbsp;Binbin Jia,&nbsp;Huiqing Wang,&nbsp;Hongfei Gu,&nbsp;Qi Hu,&nbsp;Haosen Yang,&nbsp;Tianqi Guo,&nbsp;Pengfei Hu,&nbsp;Lidong Li,&nbsp;Li-Min Liu,&nbsp;Lin Guo","doi":"10.1002/ange.202505668","DOIUrl":"https://doi.org/10.1002/ange.202505668","url":null,"abstract":"<p>Direct utilization of diluted CO<sub>2</sub> enables sustainable CO<sub>2</sub> conversion into valuable products, with reduced CeO<sub>2</sub> emerging as an attractive candidate due to its exceptional redox flexibility. The catalytic efficacy of CeO<sub>2</sub> is intimately tied to the electronic structure of 4<i>f</i>, yet the persistent challenge lies in maintaining a high and stable concentration of Ce<sup>3+</sup>. In this study, we propose a symmetry-breaking-induced amorphization strategy to achieve an exceptionally high Ce<sup>3+</sup> ratio by B doping, which facilitates the reduction of Ce<sup>4+</sup> to Ce<sup>3+</sup> in amorphous CeO<sub>2</sub>. First-principles calculations and infrared spectroscopy reveal that B doping with three excess electrons induces the formation of planar triangular B–O₃ units by disrupting the original high-symmetry <span></span><math></math> structure of CeO<sub>2</sub>, facilitating the spontaneous transition to the amorphous phase. Electronic structure analysis confirms that even a modest 7.5% B doping can significantly elevate the Ce<sup>3+</sup> ratio to 85.7%. The resulting amorphous B-doped CeO<sub>2</sub>/GO shows a remarkable CO<sub>2</sub>-to-CO conversion rate of 249.33 µmol g<sup>−1</sup> h<sup>−1</sup>(under 15% CO<sub>2</sub>) and 103.4 µmol g<sup>−1</sup> h<sup>−1</sup>(under 1% CO<sub>2</sub>), with 100% selectivity in both cases. This performance highlights how amorphization stabilizes defect states, making amorphous CeO<sub>2</sub>/GO with high Ce<sup>3+</sup> an effective material for CO<sub>2</sub> photoreduction and addressing key challenges in CO<sub>2</sub> capture and utilization.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sprayed Microdroplets Architect a Polyoxometalate Framework 喷涂微滴构建多金属氧酸盐框架
Angewandte Chemie Pub Date : 2025-04-08 DOI: 10.1002/ange.202424745
Abhijit Nandy, Gajiram Murmu, Anitesh Rana, Sumit Saha, Shibdas Banerjee
{"title":"Sprayed Microdroplets Architect a Polyoxometalate Framework","authors":"Abhijit Nandy,&nbsp;Gajiram Murmu,&nbsp;Anitesh Rana,&nbsp;Sumit Saha,&nbsp;Shibdas Banerjee","doi":"10.1002/ange.202424745","DOIUrl":"https://doi.org/10.1002/ange.202424745","url":null,"abstract":"<p>Although many past attempts have utilized micron-sized droplets for breaking and forming organic bonds, their potential in promoting inorganic bond formation reactions remains largely unexplored. We report a promising approach to synthesizing a tungsten-based Lindqvist-type polyoxometalate (POM) in various organic and aqueous microdroplets under ambient conditions, eliminating the traditional need for hazardous or corrosive chemicals and high-boiling solvents. When aerosolized, a simple tungstate (WO<sub>4</sub><sup>2−</sup>) solution spontaneously produces a metal-oxo cluster (W<sub>6</sub>O<sub>19</sub><sup>2−</sup>), a valuable POM with broad applications, achieving yields up to 99% in less than a millisecond. Mass spectrometric detection of reactive intermediates unraveled the nucleation mechanism in microdroplets, leading to the formation of polyoxotungstate, which was then further characterized by X-ray crystallography. Empirical observations collectively suggest that rapid solvent evaporation and subsequent enrichment of reactants in the confined volume of microdroplets likely facilitate the growth of the POM through partial solvation at the air–liquid interface.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unprecedented “off-pathway” [2+2] Cycloaddition-Retroelectrocyclization Reaction Between an Unsymmetric Alkyne and Tetracyanoquinodimethane 不对称炔与四氰喹诺二甲烷间前所未有的“非通路”[2+2]环加成-反电环反应
Angewandte Chemie Pub Date : 2025-04-08 DOI: 10.1002/ange.202506536
Oscar Fernández-Vera, Luca Sagresti, Luis M. Mateo, Tomas Torres, Giuseppe Brancato, Giovanni Bottari
{"title":"Unprecedented “off-pathway” [2+2] Cycloaddition-Retroelectrocyclization Reaction Between an Unsymmetric Alkyne and Tetracyanoquinodimethane","authors":"Oscar Fernández-Vera,&nbsp;Luca Sagresti,&nbsp;Luis M. Mateo,&nbsp;Tomas Torres,&nbsp;Giuseppe Brancato,&nbsp;Giovanni Bottari","doi":"10.1002/ange.202506536","DOIUrl":"https://doi.org/10.1002/ange.202506536","url":null,"abstract":"<p>In recent years, the [2+2] cycloaddition-retroelectrocyclization (CA-RE) reaction between electron-rich alkynes and electron-deficient alkenes has emerged as one of the most effective synthetic routes to prepare a large variety of molecular and polymeric electron donor–acceptor systems. Besides its simplicity, fast rate, and high yield, this reaction may also display complete and predictable regioselectivity, as in the case when tetracyanoquinodimethane (TCNQ) is used in combination with unsymmetric, activated alkynes. Here, we report the first example of a [2+2] CA-RE reaction between TCNQ and an aniline-activated alkyne following an “inverted” regiochemistry, thus leading to the exclusive formation of an unexpected regioisomer in contrast to the expected one. A combined experimental and theoretical study helped us to unravel the peculiar reaction mechanism underlying the regioselectivity switching.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ange.202506536","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Predator–Prey Behavior of Droplets Propelling Through Self-Generated Channels in Crystalline Surfactant Layers 晶体表面活性剂层中水滴自生通道推进的捕食-被捕食行为
Angewandte Chemie Pub Date : 2025-04-08 DOI: 10.1002/ange.202502352
Priyanshu Singh, Peter A. Korevaar
{"title":"Predator–Prey Behavior of Droplets Propelling Through Self-Generated Channels in Crystalline Surfactant Layers","authors":"Priyanshu Singh,&nbsp;Peter A. Korevaar","doi":"10.1002/ange.202502352","DOIUrl":"https://doi.org/10.1002/ange.202502352","url":null,"abstract":"<p>Motile droplets provide an attractive platform for liquid matter-based applications and protocell analogues displaying life-like features. The functionality of collectively operating droplets increases by the advance of well-designed (physico)chemical systems directing droplet–droplet interactions. Here, we report a strategy based on crystalline surfactant layers at air/water interfaces, which sustain the propulsion of floating droplets and at the same time shape the paths for other droplets attracted by them. First, we show how decylamine forms a closed, crystalline layer that remains at the air/water interface. Second, we demonstrate how aldehyde-based oil droplets react to decylamine in the crystalline layer by forming an imine, causing the droplets to move through the layer while leaving behind an open channel (comparable to “Pac-Man”). Third, we introduce tri(ethylene glycol) monododecylether (C<sub>12</sub>E<sub>3</sub>) droplets in the crystalline layer. The crystalline layer suppresses the motion of the C<sub>12</sub>E<sub>3</sub> droplets, however, the aldehyde droplets create surface tension gradients upon depletion of surfactants from the air/water interface, thereby driving Marangoni flows that attract the C<sub>12</sub>E<sub>3</sub> droplets as well as the myelin filaments they grow: Causing the C<sub>12</sub>E<sub>3</sub> droplets to chase, and ultimately catch, the aldehyde droplets along the channels they have created, featuring a predator-prey analogy established at an air/water interface.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ange.202502352","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimizing Charge Separated Synergistic Binding Sites in Self-Healing Crystalline Porous Organic Salts for Benchmark Trace Alkyne/Alkene Separation 自愈晶体多孔有机盐中电荷分离协同结合位点的优化研究
Angewandte Chemie Pub Date : 2025-04-08 DOI: 10.1002/ange.202507442
Yunjia Jiang, Lingyao Wang, Guolong Xing, Changhong Liu, Guangzu Xiong, Danling Sun, Jianbo Hu, Weidong Zhu, Zonglin Gu, Banglin Chen, Teng Ben, Yuanbin Zhang
{"title":"Optimizing Charge Separated Synergistic Binding Sites in Self-Healing Crystalline Porous Organic Salts for Benchmark Trace Alkyne/Alkene Separation","authors":"Yunjia Jiang,&nbsp;Lingyao Wang,&nbsp;Guolong Xing,&nbsp;Changhong Liu,&nbsp;Guangzu Xiong,&nbsp;Danling Sun,&nbsp;Jianbo Hu,&nbsp;Weidong Zhu,&nbsp;Zonglin Gu,&nbsp;Banglin Chen,&nbsp;Teng Ben,&nbsp;Yuanbin Zhang","doi":"10.1002/ange.202507442","DOIUrl":"https://doi.org/10.1002/ange.202507442","url":null,"abstract":"<p>The separation of trace alkyne (C<sub>2</sub>H<sub>2</sub>/C<sub>3</sub>H<sub>4</sub>) impurities from alkenes (C<sub>2</sub>H<sub>4</sub>/C<sub>3</sub>H<sub>6</sub>) is a significant but challenging process to produce polymer-grade C<sub>2</sub>H<sub>4</sub> and C<sub>3</sub>H<sub>6</sub>. Herein, we reported an optimally designed charge-separated organic framework, crystalline porous organic salt (CPOS-1), with confined polar channels for highly efficient alkyne/alkene separation. CPOS-1 exhibits excellent stability, remarkably high C<sub>2</sub>H<sub>2</sub> (18.4 cm<sup>3</sup> g<sup>−1</sup>) and C<sub>3</sub>H<sub>4</sub> (20.9 cm<sup>3</sup> g<sup>−1</sup>) uptakes at 0.01 bar and 298 K, and benchmark C<sub>2</sub>H<sub>2</sub>/C<sub>2</sub>H<sub>4</sub> (25.1) and C<sub>3</sub>H<sub>4</sub>/C<sub>3</sub>H<sub>6</sub> (43.9) separation selectivities for 1/99 alkyne/alkene mixtures. The practical alkyne/alkene separation performance was completely identified by breakthrough-column experiments under various conditions with excellent cycle stability and high alkene productivities (C<sub>2</sub>H<sub>4</sub>: 216.6 L kg<sup>−1</sup>; C<sub>3</sub>H<sub>6</sub>: 162.4 L kg<sup>−1</sup>). Theoretical calculations indicated that pore aperture in CPOS-1 acts as a tailored single-molecule trap, where alkynes are captured by multiple synergistic electropositive and electronegative sites, thus enhancing alkyne recognition. Furthermore, the ease of rehealing facilitates its practical application, transcending the limitations of the metal-organic frameworks (MOFs) and covalent organic frameworks (COFs).</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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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