Chemical Science最新文献

Unlocking Ultra-Low Temperature Performance: An Anti-Freezing, High-Conductivity, Biodegradable Hydrogel Electrolyte for Supercapacitors Down to -60 °C 解锁超低温性能：一种抗冻、高导电性、可生物降解的水凝胶电解质，适用于-60°C的超级电容器

IF 8.4 1区化学

Chemical Science Pub Date : 2025-09-15 DOI: 10.1039/d5sc05466d

Yibin Xing, Nanan N. N. Z Zhu, Ruixi He, Xiyao Wang, Renyang Han, Bing Du, Xuejuan Wan

{"title":"Unlocking Ultra-Low Temperature Performance: An Anti-Freezing, High-Conductivity, Biodegradable Hydrogel Electrolyte for Supercapacitors Down to -60 °C","authors":"Yibin Xing, Nanan N. N. Z Zhu, Ruixi He, Xiyao Wang, Renyang Han, Bing Du, Xuejuan Wan","doi":"10.1039/d5sc05466d","DOIUrl":"https://doi.org/10.1039/d5sc05466d","url":null,"abstract":"Hydrogel electrolytes are highly regarded in supercapacitors for their intrinsic safety and mechanical adaptability, but inevitable freezing at subzero temperatures leads to rapid deterioration of electrochemical performance. To overcome this critical limitation, a freeze-resistant hydrogel electrolyte (SCG-Zn) capable of operating at ultra-low temperatures is developed by integrating biodegradable polysaccharides (sodium hyaluronate and carboxymethyl chitosan), glycerol, and zinc chloride. The synergistic effect of intense chloride ion (Cl-) hydration and abundant hydrophilic groups (e.g., -OH, -COOH, -NH2) within the hydrogel electrolyte creates a strongly-bound water network, significantly suppressing ice crystallization and depressing the freezing point. This unique structure enables SCG-Zn to maintain exceptional ionic conductivity (13.32 mS cm-1) even at -60 °C (35.75 mS cm-1 at 25 °C), arising from its high density of zincophilic functional groups and the establishment of continuous Zn2+ ion conduction pathways. Supercapacitors assembled with SCG-Zn electrolyte demonstrate exceptional cycling stability, retaining 97.6% capacity after 20,000 cycles at 25 °C. Impressively, even under the harsh condition of -60 °C, facilitated by the sustained ionic conduction of SCG-Zn, a remarkably high-capacity retention of 97.4% is achieved after 20,000 cycles. Furthermore, the assembled flexible devices also exhibit stable performance under repeated mechanical deformations (bending and loading). This work establishes a simple, sustainable but highly effective material for high-performance, reliable energy storage devices capable of operating in extreme cold environments.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"12 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059271","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

An atomically precise Au10(DPPF)4PPh3 cluster catalyst for N-hydroformylation of amines 一种原子精确的氨基氢甲酰化Au10(DPPF)4PPh3簇催化剂

IF 8.4 1区化学

Chemical Science Pub Date : 2025-09-15 DOI: 10.1039/d5sc06255a

Guangjun Li, Guoao Li, Xinyi Liang, Yiqi Tian, Jinzhi Lu, Xinyi Xu, Xu Liu, Jing Ma, Shuhua Li, Yan Zhu

{"title":"An atomically precise Au10(DPPF)4PPh3 cluster catalyst for N-hydroformylation of amines","authors":"Guangjun Li, Guoao Li, Xinyi Liang, Yiqi Tian, Jinzhi Lu, Xinyi Xu, Xu Liu, Jing Ma, Shuhua Li, Yan Zhu","doi":"10.1039/d5sc06255a","DOIUrl":"https://doi.org/10.1039/d5sc06255a","url":null,"abstract":"Heterogeneous catalysis is crucially important for the well-being of society, and new catalysts are continuously discovered to improve chemical processes. Here we report a catalytic system based on an atomically precise Au10(DPPF)4PPh3 (DPPF = bidentate 1,1′-bis(diphenylphosphino)ferrocene) cluster, where two functional units are combined into one catalyst for N-hydroformylation of pyrrolidine with CO2 and H2. The two units execute their respective roles, including two types of ligands that mediate the structural framework and further reinforce the catalytic stability of the cluster, and a metal core consisting of ten gold atoms that are all potentially active sites participating in the hydrogenation of CO2 toward the key intermediate, such as formic acid. Sequentially, formylation proceeds via a relay migration of protons along a proposed transition state originating from the intermediate and pyrrolidine, thereby breaking the N–H bond and constructing the C–N bond. The synergy between the active sites and the neighbouring environment therefore enables optimal activity and stability of the cluster catalyst, outperforming most catalysts reported under comparable conditions.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"65 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059373","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

Quantum Sensing of Paramagnetic Analytes by Nanodiamonds in Levitated Microdroplets and Aqueous Solutions 纳米金刚石在悬浮微滴和水溶液中顺磁分析物的量子传感

IF 8.4 1区化学

Chemical Science Pub Date : 2025-09-15 DOI: 10.1039/d5sc04108b

Emily Brown, Zachary R. Jones, Adrisha Sarkar, Brandon J. Wallace, Ashok Ajoy, Kevin Roger Wilson

{"title":"Quantum Sensing of Paramagnetic Analytes by Nanodiamonds in Levitated Microdroplets and Aqueous Solutions","authors":"Emily Brown, Zachary R. Jones, Adrisha Sarkar, Brandon J. Wallace, Ashok Ajoy, Kevin Roger Wilson","doi":"10.1039/d5sc04108b","DOIUrl":"https://doi.org/10.1039/d5sc04108b","url":null,"abstract":"Nanodiamonds (ND) hosting negatively charged nitrogen-vacancy (NV-) color centers have received attention for applications in magnetic field, electric field, chemical, and bio-sensing. The versatility of these probes is their excellent room-temperature optical and spin properties, along with their small size, functionalized surfaces and resistance to bleaching, making them ideal as nanoscopic sensors in picoliter volumes (e.g. single cells, but also microcompartments and aerosols). For quantitative ND-NV- sensing of paramagnetic analytes in such contexts, however, there remains an incomplete understanding of how factors related to the aqueous phase environment control detection efficiency. To address this, optically detected magnetic resonance (ODMR) is measured in bulk macroscale solutions and single levitated microdroplets as a function of Gd+3 concentration (340 nM to 1.5 mM), nanodiamond size, pH, competitor ions, and ligands. The ODMR response to [Gd+3] is found to be nonlinear, and pH, ND and sample volume dependent; indicating the detection of Gd+3 requires efficient adsorption of the analyte to the diamond surface. Langmuir adsorption isotherms embedded in a quantitative photophysical model links the ODMR response to adsorption thermodynamics of Gd+3. The equilibrium constant for Gd+3 adsorption to a carboxylated ND surface is determined to be (1 ± 0.5) x 105 M-1 corresponding to a free energy of adsorption of (-28 ± 1) kJ/mol. These results provide general insight into how complex aqueous and microscale environments impact nanodiamond based quantum sensing modalities, and portend their application as quantitative chemical sensors in microenvironments.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"78 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059274","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

Enhanced ion intercalation in NixK1-2xTiNbO5 enabled by redox active Ni exchange for potassium-ion batteries 钾离子电池氧化还原活性Ni交换使NixK1-2xTiNbO5中的离子嵌入增强

IF 8.4 1区化学

Chemical Science Pub Date : 2025-09-15 DOI: 10.1039/d5sc04984a

Charlie Nason, Ajay Piriya Vijaya Kumar Saroja, Wanjun Ren, Yingkangzi Mei, Asma Sarguroh, Yupei Han, Yi Lu, Jamie Gould, Timothy Hyde, Veronica Celorrio, Gopinathan Sankar, Yang Xu

{"title":"Enhanced ion intercalation in NixK1-2xTiNbO5 enabled by redox active Ni exchange for potassium-ion batteries","authors":"Charlie Nason, Ajay Piriya Vijaya Kumar Saroja, Wanjun Ren, Yingkangzi Mei, Asma Sarguroh, Yupei Han, Yi Lu, Jamie Gould, Timothy Hyde, Veronica Celorrio, Gopinathan Sankar, Yang Xu","doi":"10.1039/d5sc04984a","DOIUrl":"https://doi.org/10.1039/d5sc04984a","url":null,"abstract":"The ultimate goal of potassium-ion batteries (KIBs) is to become a serious competitor to lithium-ion batteries (LIBs). Achieving this requires the development of high energy density negative electrode materials, with transition metal oxides emerging as the most promising candidates. However, despite their high theoretical capacities, most transition metal oxides still struggle to achieve high performance, often necessitating substantial nanostructuring. Ion-exchange presents a facile and effective process for enhancing material properties, yet the demonstration of the exchanged ions undergoing redox activity has not been previously reported for KIBs. Herein, this work reports Ni0.25K0.5TiNbO5, synthesized through the ion-exchange between K+ and Ni2+, as a novel negative electrode material for KIBs. The ion-exchanged material achieves a specific capacity of 304 mAh g-1 in the first cycle and 162 mAh g-1 after 10 cycles, corresponding to a 240% and 156% increase compared to the pristine, unexchanged KTiNbO5 at the same cycle numbers. The structure-performance relationship was investigated in detail, shedding light on the previously unknown relationships between the level of hydration, degree of exchange and the performance of ion-exchanged materials. Furthermore, the exchanged Ni was demonstrated to be reversibly redox active, contributing to the observed capacity and representing a first for ion-exchanged materials in the KIB literature.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"48 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059376","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

Matere bond identification in non-crystalline materials by using X-ray photoelectron spectroscopy 用x射线光电子能谱识别非晶态材料中的物质键

IF 8.4 1区化学

Chemical Science Pub Date : 2025-09-15 DOI: 10.1039/d5sc04587h

Oleg Semyonov, Nikita S. Antonkin, Amirbek Radzhabov, Andrea Pizzi, Cristina Lo Iacono, Olga Guselnikova, Sergi Burguera Piña, Antonio Frontera, Giuseppe Resnati, Pavel S Postnikov

引用次数: 0

A borindolizine platform for the design of fluorophores with tun-able emissions 用于设计具有可调谐发射的荧光团的硼嘧啶平台

IF 8.4 1区化学

Chemical Science Pub Date : 2025-09-15 DOI: 10.1039/d5sc04328j

Chirag N. Apte, Nicholas W. Heller, Ben Zhen Huang, Adam Marr, Kjell Jorner, Alan Aspuru-Guzik, Andrei K Yudin

引用次数: 0

Tailoring luminescent oxygen sensitivity via structural design and its application in pressure-induced emission enhancement 通过结构设计裁剪发光氧敏度及其在压力致发射增强中的应用

IF 8.4 1区化学

Chemical Science Pub Date : 2025-09-15 DOI: 10.1039/d5sc05999b

Hong-Jin Zhang, Zong-Ren Chen, Wan-Tao Chen, Jia-Wen Ye, Ling Chen

{"title":"Tailoring luminescent oxygen sensitivity via structural design and its application in pressure-induced emission enhancement","authors":"Hong-Jin Zhang, Zong-Ren Chen, Wan-Tao Chen, Jia-Wen Ye, Ling Chen","doi":"10.1039/d5sc05999b","DOIUrl":"https://doi.org/10.1039/d5sc05999b","url":null,"abstract":"Pressure-induced emission enhancement (PIEE) is relatively rare and holds greater research promise than pressure-induced emission quenching. However, reports on PIEE often overlook the influence of atmospheric oxygen, especially in porous materials. Additionally, since the impact of energy transfer between the excited state of luminescent probes and T1(O2) on oxygen sensitivity remains unclear, tuning the luminescence-based oxygen sensitivity at the molecular structural level is highly challenging. Here, we report a series of coordination polymers (CuXBP, X = I, Br, Cl). Although they have similar structures and comparable porosity, their oxygen quenching efficiencies differ significantly (ranging from 95.8% to 7.7%). Computational simulations reveal that the superior oxygen quenching efficiency of CuIBP stems from the minimal ΔE (742 cm−1) between its T1 state and T1(O2). Additionally, under pressure, both CuClBP and CuBrBP exhibit the commonly observed red shift accompanied by luminescence quenching. However, CuIBP displays the less commonly observed PIEE, attributed to the reduced porosity after grinding, which lowers oxygen-sensing efficiency (from 95.8% to 33.2%). Compared to its unground state, this efficiency reduction in CuIBP substantially attenuates oxygen-induced quenching, resulting in stronger luminescence (>2-fold enhancement) under ambient conditions. This work establishes a novel strategy for designing oxygen sensing and PIEE materials.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"48 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059329","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

From Efficiency to Sustainability: Organic Additives for Interfacial Regulation in Lithium Metal Batteries 从效率到可持续性：用于锂金属电池界面调节的有机添加剂

IF 8.4 1区化学

Chemical Science Pub Date : 2025-09-15 DOI: 10.1039/d5sc03975d

Wei Gu, Di He, Yuting Qin, Chongchong Fu, Jiahui Lu, Tianyi Wang, Guoxiu Wang, Bing Sun

{"title":"From Efficiency to Sustainability: Organic Additives for Interfacial Regulation in Lithium Metal Batteries","authors":"Wei Gu, Di He, Yuting Qin, Chongchong Fu, Jiahui Lu, Tianyi Wang, Guoxiu Wang, Bing Sun","doi":"10.1039/d5sc03975d","DOIUrl":"https://doi.org/10.1039/d5sc03975d","url":null,"abstract":"The utilization of lithium (Li) metal anodes is gaining renewed attention due to the increasing demand for electric vehicles (Evs) and the continuous rise in traditional energy consumption. These Li metal anodes exhibit a high theoretical discharge capacity (3,860 mAh g-1) and an ultra-low redox potential (-3.04 V vs the SHE), making them the coveted “Holy Grail” for next-generation lithium-ion batteries (LIBs). However, challenges in terms of uncontrolled formation of Li dendrites, instability in the solid electrolyte interphases (SEI) layer, and numerous parasitic reactions have hindered the commercialization of Li metal anodes. In recent years, extensive research has been conducted on the appropriate utilization of organic additives as a long-term, stable, cost-effective, and practical approach to enhancing their stability. The present review investigates the effects of various types and molecular weights of organic additives on the preservation of Li metal anodes and their influence on SEI membrane modification. Finally, we offer valuable insights into the prospective development trajectory of organic additives that are compatible with Li metal anodes.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"17 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059272","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

Dual-site Recognition Leads to a Ratiometric Fluorescent Probe for Norepinephrine: Quantitative Detection and Visualization for in-depth Understanding of Hypertension 双位点识别导致比例荧光探针去甲肾上腺素：定量检测和可视化深入了解高血压

IF 8.4 1区化学

Chemical Science Pub Date : 2025-09-15 DOI: 10.1039/d5sc05925a

Fengzhi Wang, Jiawen Wang, Weiping Zhu, Yangyang Yang, Honglin Li, Tony D. James, Yufang Xu, Xu Hong Qian

{"title":"Dual-site Recognition Leads to a Ratiometric Fluorescent Probe for Norepinephrine: Quantitative Detection and Visualization for in-depth Understanding of Hypertension","authors":"Fengzhi Wang, Jiawen Wang, Weiping Zhu, Yangyang Yang, Honglin Li, Tony D. James, Yufang Xu, Xu Hong Qian","doi":"10.1039/d5sc05925a","DOIUrl":"https://doi.org/10.1039/d5sc05925a","url":null,"abstract":"Hypertension is closely associated with the activation of sympathetic nervous system (SNS). Norepinephrine (NE) belongs to the catecholamine family and is the primary neurotransmitter of SNS. Plasma and tissue NE levels serve as biomarkers of sympathetic overdrive in hypertension, providing measurable indicators to guide the therapeutic approaches. However, there are a few reliable tools to simultaneously quantify plasma NE and visualize tissue NE for comprehensive SNS assessment in hypertension. Herein, to selectively recognize the unique L-hydroxyethylamine and catechol moieties of NE, we designed and synthesized a dual-site fluorescent probe that can specifically bind to these two characteristic groups. The recognition process generates a macrocyclic-ring enhanced by silver bridging, accompanied by a ratiometric fluorescence change. The probe enables quantitative NE detection in both plasma and urine, as well as NE visualization in heart, kidney and adrenal gland tissues. Notably, our results demonstrated that spontaneously hypertensive rats (SHR) have higher circulating and tissue NE levels, indicating SNS overactivation. These findings provide a powerful molecular tool for the assessment of SNS activity and offer an in-depth understanding of hypertension.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"36 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059377","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

Colloidal synthesis of ultrathin KFeS2 and RbFeS2 magnetic nanowires with non-van der Waals 1D structures 非范德华一维结构超薄KFeS2和RbFeS2磁性纳米线的胶体合成

IF 8.4 1区化学

Chemical Science Pub Date : 2025-09-12 DOI: 10.1039/d5sc04592d

Zhaohong Sun, Ngoc Pham, Shahab Derakhshan, Richard L. Brutchey

{"title":"Colloidal synthesis of ultrathin KFeS2 and RbFeS2 magnetic nanowires with non-van der Waals 1D structures","authors":"Zhaohong Sun, Ngoc Pham, Shahab Derakhshan, Richard L. Brutchey","doi":"10.1039/d5sc04592d","DOIUrl":"https://doi.org/10.1039/d5sc04592d","url":null,"abstract":"Design of one-dimensional (1D) nanomaterials based on non-van der Waals (non-vdW) 1D chain structures is emerging as a new materials frontier, owing to their strong intrinsic anisotropy and broad compositional diversity. However, achieving ultrathin 1D morphology in such systems remains a significant challenge. In this work, we report the colloidal synthesis of ultrathin KFeS2 and RbFeS2 nanowires—representing the first fabrication of ultrathin 1D nanomaterials driven by non-vdW 1D crystal structures. The nanowires exhibit diameters of ∼5 nm and lengths of microns, with anisotropic growth directed by covalent [FeS2]− chains. Magnetic characterization reveals significantly reduced antiferromagnetic transition temperatures and suppressed interchain ferromagnetic interactions, demonstrating pronounced size and morphology effects. Control experiments on structurally related materials indicate that direct nucleation of the 1D phase is essential for achieving the nanowire morphology. These findings establish a new synthetic pathway to an understudied family of non-vdW 1D nanomaterials, enabling exploration of their emergent quantum and magnetic properties.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"33 1","pages":""},"PeriodicalIF":8.4,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145035975","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