Science China Chemistry最新文献_第9页

3D porous polymer framework induced by molecular bridging reaction enables quasi-solid zinc-ion batteries 通过分子桥接反应诱导三维多孔聚合物框架，制备准固体锌离子电池

IF 9.7 1区化学

Science China Chemistry Pub Date : 2026-03-26 DOI: 10.1007/s11426-025-3224-x

Yi Zhang, Tengxuan Zhang, Shanghuai Gao, Le Chang, Benle Zhang, Danyang Zhao, Qiancheng Zhu

{"title":"3D porous polymer framework induced by molecular bridging reaction enables quasi-solid zinc-ion batteries","authors":"Yi Zhang, Tengxuan Zhang, Shanghuai Gao, Le Chang, Benle Zhang, Danyang Zhao, Qiancheng Zhu","doi":"10.1007/s11426-025-3224-x","DOIUrl":"10.1007/s11426-025-3224-x","url":null,"abstract":"<div><p>Quasi-solid polymer electrolytes (QSPEs) have garnered extensive research attention due to their abilities to effectively mitigate critical challenges, including hydrogen evolution, electrode passivation and zinc dendrite growth in aqueous zinc-ion batteries (AZIBs). Nevertheless, QSPEs still face numerous issues, typically as low ionic conductivity. Herein, a three-dimensional porous P(VDF-TrFE) quasi-solid electrolyte was synthesized via a molecular-bridging-induced crosslinking reaction, with water content adjusted by ultrasonic atomization to optimize the ionic transport kinetics. Based on the highly effective Zn<sup>2+</sup> transmission path provided by 3D porous structure and the regulation of solvated Zn<sup>2+</sup> by crosslinking sites of C–O–C groups, a typical sample CPZ-25 exhibits exceptional ionic conductivity (8.8 mS cm<sup>−1</sup>), high transference number (0.70) and low interfacial resistance, thereby promoting uniform Zn deposition. Consequently, the Zn anode has greatly extended the service life, and the full cells using MnO<sub>2</sub> realize 1200 cycles at 1 A g<sup>−1</sup>. This study provides novel perspectives for the design of high-performance QSPE-based zinc-ion batteries.</p><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 6","pages":"3064 - 3072"},"PeriodicalIF":9.7,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148060718","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

Sulfonated COF-based mixed matrix membranes with tailored porosity and surface chemistry for enhanced ion-sieving effect in polysulfide redox flow batteries 磺化cof基混合基质膜，具有定制的孔隙率和表面化学性质，可增强多硫化物氧化还原液流电池中的离子筛分效果

IF 9.8 1区化学

Science China Chemistry Pub Date : 2026-03-26 DOI: 10.1007/s11426-025-3286-5

Puxin Weng, Mengxiang Zhang, Ying Wang, Kun Wu, Gexin Zhou, Xinru Jiang, Xu Chen, Fangjie Xu, Hualin Ye, Xianze Yin, Weigang Lu, Dan Li

{"title":"Sulfonated COF-based mixed matrix membranes with tailored porosity and surface chemistry for enhanced ion-sieving effect in polysulfide redox flow batteries","authors":"Puxin Weng, Mengxiang Zhang, Ying Wang, Kun Wu, Gexin Zhou, Xinru Jiang, Xu Chen, Fangjie Xu, Hualin Ye, Xianze Yin, Weigang Lu, Dan Li","doi":"10.1007/s11426-025-3286-5","DOIUrl":"10.1007/s11426-025-3286-5","url":null,"abstract":"<div><p>The fabrication of ion-conducting membranes with sub-nanometer channels has attracted considerable attention owing to their critical role in rechargeable redox flow batteries (RFBs). Herein, we report a sulfonated covalent organic framework (COF), Tp-Id-SO<sub>3</sub>Na, that features ordered sub-nanometer channels capable of effectively blocking polysulfides. Further incorporation of Tp-Id-SO<sub>3</sub>Na into a sulfonated poly(ether ether ketone) (SPEEK) matrix yields a membrane with markedly enhanced ionic selectivity and conductivity. When used in a polysulfide/polyiodide redox flow battery, the Tp-Id-SO<sub>3</sub>Na-based membrane enables a high-power density (∼135 mW cm<sup>−2</sup>) and a long cycle durability over 470 cycles (1026 h), significantly outperforming commercial SPEEK and Nafion membranes. This work highlights the effectiveness of tailoring porous sub-nanometer COF-based materials to improve membrane ionic conductivity and selectivity, offering new opportunities for COF-based ion-sieving membranes in advanced energy storage systems.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 8","pages":"4381 - 4386"},"PeriodicalIF":9.8,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695670","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

Sequentially programmable supramolecular assembly: boosting organic phosphorescence through hierarchical conformational confinement 顺序可编程的超分子组装：通过分层构象约束增强有机磷光

IF 9.8 1区化学

Science China Chemistry Pub Date : 2026-03-25 DOI: 10.1007/s11426-025-3216-8

Yu-Lu Zhang, Pei-Ao Sun, Ze-Kai Deng, Qing-Wen Cheng, Ying-Ming Zhang, Yong Chen, Yu Liu

{"title":"Sequentially programmable supramolecular assembly: boosting organic phosphorescence through hierarchical conformational confinement","authors":"Yu-Lu Zhang, Pei-Ao Sun, Ze-Kai Deng, Qing-Wen Cheng, Ying-Ming Zhang, Yong Chen, Yu Liu","doi":"10.1007/s11426-025-3216-8","DOIUrl":"10.1007/s11426-025-3216-8","url":null,"abstract":"<div><p>In contrast to conventional stimuli-responsive systems driven by disordered and uncoordinated input signals, sequence-responsive architectures exhibit intrinsic superiority in fabricating intelligent nanoconstructs with biomimetic responsiveness and tunable functionality. Herein, we present a sequentially programmable supramolecular assembly engineered through hierarchical conformational confinement of <i>n</i>-dodecyl-bridged 4-(4-bromophenyl)pyridinium salts (<b>G1</b>) with α-cyclodextrin (α-CD) and cucurbit[7]uril (CB[7]). Photophysical investigation reveals that the sequential co-inclusion by α-CD and CB[7] substantially immobilizes the molecular conformation, resulting in a remarkable enhancement of organic phosphorescence intensity through restoration of the emissive pathway. As a proof-of-concept demonstration, the obtained <b>G1</b>@α-CD@CB[7] assembly is successfully employed in information anti-counterfeiting and data storage via the triplet-to-singlet Förster resonance energy transfer. This study elucidates an innovative yet straightforward approach for manipulating photoluminescent properties by exploiting the differential molecular recognition capabilities of macrocyclic hosts, thereby advancing the development of environmentally responsive supramolecular optical materials.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 7","pages":"3610 - 3618"},"PeriodicalIF":9.8,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553000","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

Nonsymmetric tetranuclear spiro α-diol-β-diimine nickel complexes catalyzed ethylene homopolymerization and copolymerization with alkenol—roles of varied nickel sites 非对称四核螺旋α-二醇-β-二亚胺镍配合物催化乙烯均聚和烯醇共聚

IF 9.7 1区化学

Science China Chemistry Pub Date : 2026-03-25 DOI: 10.1007/s11426-025-3138-2

Gang Ji, Zhou Chen, Yanan Zhao, Yanshan Gao, Xiu-Li Sun, Yi Luo, Yong Tang

{"title":"Nonsymmetric tetranuclear spiro α-diol-β-diimine nickel complexes catalyzed ethylene homopolymerization and copolymerization with alkenol—roles of varied nickel sites","authors":"Gang Ji, Zhou Chen, Yanan Zhao, Yanshan Gao, Xiu-Li Sun, Yi Luo, Yong Tang","doi":"10.1007/s11426-025-3138-2","DOIUrl":"10.1007/s11426-025-3138-2","url":null,"abstract":"<div><p>A series of nonsymmetric tetranuclear spiro α-diol-β-diimine nickel complexes with a non-coordinating aryl group (Site 1) and a coordinating side-arm tertiary amine group (Site 2) were designed, synthesized, and characterized for studying the roles of Ni(II)s in the cluster in olefin polymerizations. Upon activation with MMAO, these complexes show moderate to high activity in ethylene homo- and co-polymerization with 3-buten-1-ol and 9-decen-1-ol. These nonsymmetric tetranuclear complexes exhibit bimodal catalytic behavior besides great activity, up to 2569 kg/(mol Cat h atm). The <i>M</i><sub>w</sub> distribution of PE from bimodal to monomodal and <i>M</i><sub>w</sub> of the low molecular weight (LMW) fraction from 11 to 66 kg/mol can be efficiently tuned by the introduced coordinating side arm tertiary amine or aryl group at Site 2. Polymer <sup>1</sup>H NMR shows vinyl end group exists in PEs with LMW fraction and its absence in PEs without LMW fraction, suggesting the Site 2 Ni center with side-arm tertiary alkyl amine leads to LMW PE and β-H elimination is the chain termination pathway. DFT studies were carried out supporting the different roles of the Ni sites bearing different steric and electronic environments in the tetranuclear complex on activity, polymer dispersity and <i>M</i><sub>w</sub> of the LMW fraction in ethylene polymerization.</p><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 6","pages":"3049 - 3056"},"PeriodicalIF":9.7,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148060884","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

A novel surface-Cu-rich Au31Cu24 nanocluster for catalyzing one-pot three-component cascade synthesis of polysubstituted furans 一种新型表面富cu的Au31Cu24纳米团簇催化一锅三组分级联合成多取代呋喃

IF 9.7 1区化学

Science China Chemistry Pub Date : 2026-03-24 DOI: 10.1007/s11426-025-3123-8

Yu-Quan Qi, Jian-Hua Jia, Ming-Liang Tong

{"title":"A novel surface-Cu-rich Au31Cu24 nanocluster for catalyzing one-pot three-component cascade synthesis of polysubstituted furans","authors":"Yu-Quan Qi, Jian-Hua Jia, Ming-Liang Tong","doi":"10.1007/s11426-025-3123-8","DOIUrl":"10.1007/s11426-025-3123-8","url":null,"abstract":"<div><p>Atomically precise heterometallic nanoclusters (NCs) are endowed with considerable edges in tailoring active sites, modulating intermetallic synergies, and engineering electronic structures. Herein, we report an unprecedented 55-nuclearity metal NC, [Au<sub>31</sub>Cu<sub>24</sub>O<sub>2</sub>(dppy)<sub>12</sub>Cl<sub>18</sub>]<sup>3+</sup> (<b>Au</b><sub><b>31</b></sub><b>Cu</b><sub><b>24</b></sub>, dppy = 2-(diphenylphosphino)pyridine), featuring an unusual Au<sub>19</sub>@Au<sub>12</sub>Cu<sub>24</sub> core-shell architecture. The 24 Cu atoms reside exclusively within the Au-Cu alloy shell, stabilized by chlorides and pyridyl-N donors, creating a unique surface-Cu-rich configuration. The existence of interstitial oxygen atoms is crucial for the formation of the title cluster; otherwise, the smaller-sized <b>Au</b><sub><b>13−</b><b><i>n</i></b></sub><b>Cu</b><sub><b>2+</b><b><i>n</i></b></sub> (<i>n</i> = 0–4) NC is obtained. <b>Au</b><sub><b>31</b></sub><b>Cu</b><sub><b>24</b></sub> has achieved efficient activation of three-component cascade reactions toward polysubstituted furan synthesis, which is closely related to its surface-Cu and Au-Cu alloy shell. Notably, <b>Au</b><sub><b>31</b></sub><b>Cu</b><sub><b>24</b></sub> demonstrates high catalytic efficiency in the cascade reaction, mild reaction conditions, a broad substrate scope, as well as catalyst recyclability. These findings provide critical insights into designing synergistic heterometallic catalysts for cascade reactions and advancing the synthesis of customized alloy nanomaterials.</p><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 6","pages":"2843 - 2851"},"PeriodicalIF":9.7,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148061010","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

Electron reverse triggered by oxygen vacancies to break the activity-stability trade-off for oxygen reduction in alkaline seawater 氧空位引发的电子反转打破了碱性海水中氧还原的活性-稳定性权衡

IF 9.8 1区化学

Science China Chemistry Pub Date : 2026-03-24 DOI: 10.1007/s11426-025-3235-9

Guiru Sun, Xiangyan Kong, Huimin Mao, Siqi Wu, Yanru Liu, Dongxiang Li, Yingxia Zong, Jingqi Chi, Zexing Wu, Xiaobin Liu, Lei Wang

{"title":"Electron reverse triggered by oxygen vacancies to break the activity-stability trade-off for oxygen reduction in alkaline seawater","authors":"Guiru Sun, Xiangyan Kong, Huimin Mao, Siqi Wu, Yanru Liu, Dongxiang Li, Yingxia Zong, Jingqi Chi, Zexing Wu, Xiaobin Liu, Lei Wang","doi":"10.1007/s11426-025-3235-9","DOIUrl":"10.1007/s11426-025-3235-9","url":null,"abstract":"<div><p>The development of an efficient oxygen reduction reaction (ORR) electrocatalyst using seawater as electrolyte is the key to realizing the utilization of marine resources and the application of zinc-air batteries (ZABs). Herein, Pt anchored on oxygen vacancies-enriched WO<sub>3</sub> electrocatalysts (Pt//WO<sub>3-V</sub>) is constructed by a microwave method. <i>In situ</i> characterization and theoretical calculation suggest that the presence of oxygen vacancies triggers the electron reversal mechanism, driving charge transfer from WO<sub>3</sub> to Pt via an oxygen bridge (W–O–Pt), which modulates the electronic structure of Pt and enhances the ORR catalytic activity. In addition, the electron reversal mechanism mediated by oxygen vacancies promotes the formation of an electron-rich layer around Pt, which effectively suppresses chloride ion (Cl<sup>−</sup>) adsorption and prevents poisoning of Pt active sites. As a result, Pt//WO<sub>3-V</sub> has a half-wave potential (<i>E</i><sub>1/2</sub>) of 0.90 V in alkaline seawater. The maximum power density of 192 mW cm<sup>−2</sup> is obtained when Pt//WO<sub>3-V</sub> is used as the cathode catalyst in alkaline seawater-based ZABs, achieving stable operation over 120 h.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 7","pages":"3412 - 3420"},"PeriodicalIF":9.8,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552951","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

Multifunctional fluorescent Zn-MOF for latent fingerprint visualization, information anti-counterfeiting encryption and turn-on sensing of ciprofloxacin in river water 多功能荧光Zn-MOF用于河水中环丙沙星的潜在指纹可视化、信息防伪加密及开启感应

IF 9.8 1区化学

Science China Chemistry Pub Date : 2026-03-24 DOI: 10.1007/s11426-025-3236-7

Yuying Yuan, Yuting Ren, Yunwu Li, Luomei Liu, Huiyan Ma, Suna Wang, Jiandong Pang

{"title":"Multifunctional fluorescent Zn-MOF for latent fingerprint visualization, information anti-counterfeiting encryption and turn-on sensing of ciprofloxacin in river water","authors":"Yuying Yuan, Yuting Ren, Yunwu Li, Luomei Liu, Huiyan Ma, Suna Wang, Jiandong Pang","doi":"10.1007/s11426-025-3236-7","DOIUrl":"10.1007/s11426-025-3236-7","url":null,"abstract":"<div><p>Luminescent metal-organic frameworks (MOFs) with multifunctional capabilities are highly sought after for applications in security, forensics, and environmental monitoring. Herein, a 2D Zn-MOF (<b>LCU-133</b>) was rationally constructed to integrate multiple functions based on intrinsic fluorescence and host-guest interaction. The intrinsic blue emission of <b>LCU-133</b> enables high-resolution latent fingerprints imaging on multiple substrates, while its structural adaptability facilitates advanced information encryption <i>via</i> UV-responsive QR codes and anti-counterfeiting inks. Furthermore, <b>LCU-133</b> demonstrates excellent fluorescence enhancement detection of ciprofloxacin (CIP) in river water, achieving low detection limits (LODs) of 0.56 and 0.25 µmol/L, respectively, with high selectivity, fast response and strong anti-interference ability. In addition, using a smartphone RGB app to analyze the luminous test strips, a naked eye on-site visual quantification detection CIP is realized. Comprehensive experiments coupled with DFT calculations elucidate a photoinduced electron transfer (PET)-mediated luminescence enhancement mechanism, underscoring the role of host-guest interactions in selective recognition. This work presents a versatile single MOF-based platform that bridges diverse luminescence applications in security, forensics, and environmental sensing.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 7","pages":"3435 - 3443"},"PeriodicalIF":9.8,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552950","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

Prediction of uranium adsorption performance by machine learning for sustainable seawater extraction 可持续海水提取中铀吸附性能的机器学习预测

IF 9.8 1区化学

Science China Chemistry Pub Date : 2026-03-23 DOI: 10.1007/s11426-025-3233-y

Zhenli Sun, Shibo Sun, Sheng Wang, Hanyang Wang, Yiyan Zhang, Jianwei Huang, Fuyou Fan, Yuan Yang, Xiangke Wang

{"title":"Prediction of uranium adsorption performance by machine learning for sustainable seawater extraction","authors":"Zhenli Sun, Shibo Sun, Sheng Wang, Hanyang Wang, Yiyan Zhang, Jianwei Huang, Fuyou Fan, Yuan Yang, Xiangke Wang","doi":"10.1007/s11426-025-3233-y","DOIUrl":"10.1007/s11426-025-3233-y","url":null,"abstract":"<div><p>The sustainable development of nuclear energy requires efficient and reusable materials for uranium extraction from seawater, where uranyl species exist at ultra-trace levels within complex coordination environments. To overcome the limitations of empirical, trial-and-error design, this study establishes U-Predict v1.0, a structure-performance database for uranium adsorbents, and introduces an interpretable machine learning framework for adsorption performance prediction and mechanistic analysis. Trained on over 220 samples and 54 structural descriptors, the Light Gradient Boosting Machine (LightGBM) model with engineered features and optimized hyperparameters achieved a training <i>R</i><sup>2</sup> of 0.9887 and a test <i>R</i><sup>2</sup> of 0.7501, indicating robust predictive performance under heterogeneous and literature-derived conditions. SHapley Additive exPlanations (SHAP) interpretation revealed that structural and environmental variables, particularly functional group chemistry, solution pH, and surface area, jointly govern uranium the maximum adsorption capacity (<i>q</i><sub>max</sub>) through nonlinear interactions, emphasizing the dual control of material composition and adsorption environment. Experimental validation using a representative high-performance covalent organic frameworks-based adsorbent confirmed the model’s predictive reliability, with the measured <i>q</i><sub>max</sub> of 342.2 mg g<sup>−1</sup> showing reasonable agreement with the predicted value (449.3 mg g<sup>−1</sup>; 23.8% deviation). This study establishes an explainable AI paradigm that bridges modeling and experimentation, providing a transferable foundation to support the intelligent discovery and sustainable design of next-generation uranium adsorbents for high-efficiency extraction.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 7","pages":"3477 - 3484"},"PeriodicalIF":9.8,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553290","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

Energy confinement in erbium clusters enables high gains from LED-pumped waveguides 铒簇中的能量约束使led泵浦波导获得高增益

IF 9.7 1区化学

Science China Chemistry Pub Date : 2026-03-20 DOI: 10.1007/s11426-025-3266-2

Yi Man, Shoudao Ma, Chunmiao Han, Zhiyuan Zhao, Dan Zhang, Hui Xu

{"title":"Energy confinement in erbium clusters enables high gains from LED-pumped waveguides","authors":"Yi Man, Shoudao Ma, Chunmiao Han, Zhiyuan Zhao, Dan Zhang, Hui Xu","doi":"10.1007/s11426-025-3266-2","DOIUrl":"10.1007/s11426-025-3266-2","url":null,"abstract":"<div><p>Erbium-doped waveguide amplifier (EDWA) is important for long-haul optical communication, whose gains by population inversion require high Er<sup>3+</sup> densities and limited concentration quenching. Herein, we demonstrate the first example of erbium clusters named Er<sub>5</sub>(DBM)<sub>10</sub> and Er<sub>9</sub>(acac)<sub>16</sub> for high-gain EDWAs, in virtue of their multi-erbium cores for “spatial energy confinement”. The single-crystal packing diagrams and photophysical investigations indicate that highly concentrated Er<sup>3+</sup> ions in the clusters and enlarged intermolecular distances simultaneously confine and share excited-state energies in the cores via Er-Er energy migration, and suppress collisional quenching, leading to increased emission intensities and elongated lifetimes. As consequence, under 377 nm LED pumping, compared to its mononuclear congener Er(acac)<sub>3</sub>, Er<sub>9</sub>(acac)<sub>16</sub> markedly increases output optical intensity of its evanescent-field waveguides by 464%, corresponding to a state-of-the-art maximum relative gain reaching 7.5 dB/cm at 1535 nm. This work demonstrates the superiority of clusters with a unique spatial confinement effect for high-performance integrated optics.</p><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"69 6","pages":"2945 - 2950"},"PeriodicalIF":9.7,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148061091","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

Molecule-trap adsorbents: metal-organic framework platforms for pollution mitigation and carbon reduction 分子陷阱吸附剂：缓解污染和减少碳排放的金属-有机框架平台

IF 9.7 1区化学

Science China Chemistry Pub Date : 2026-03-19 DOI: 10.1007/s11426-025-3250-9

Jian-Rong Li, Guang-Rui Si, Tao He, Xiang-Jing Kong

引用次数: 0