{"title":"Iron-Based Fluoride Conversion Cathodes: Mechanisms, Design Strategies, and Challenges for High-Energy Lithium-Ion Batteries","authors":"Aoshuang Cheng, Raojie Tang, Jingchao Chai, Yu Peng, Xin Cheng, Zhihong Liu, Yun Zheng","doi":"10.1002/tcr.70216","DOIUrl":"10.1002/tcr.70216","url":null,"abstract":"<p>Iron-based fluorides (FeF<sub>3</sub>, FeF<sub>2</sub>) are used as conversion-type cathode materials. With their high theoretical specific capacity, abundant resources, and low cost, they have become promising candidates for next-generation high-energy-density lithium-ion batteries. However, their inherent low electronic and ionic conductivity, significant volume changes, complex phase transition processes, and unstable electrode/electrolyte interfaces severely limit their electrochemical performance and practical applications. This paper provides a systematic review of performance regulation and functionalization design strategies for iron-based fluoride cathode materials in recent years. First, we conduct an in-depth analysis of the distinct lithium storage mechanisms in FeF<sub>3</sub> and FeF<sub>2</sub>, highlighting the resulting performance differences and challenges. Furthermore, we highlight recent research advances in improving charge transport, buffering mechanical stress, suppressing side reactions, and stabilizing interfaces through multilevel strategies. These strategies include nanostructuring and microstructural design, lattice regulation, carbon-based composites, and interface engineering. Through synergistic effects, these strategies effectively enhance the cycling stability, rate capability, and reaction reversibility of iron-based fluorides. Finally, we discuss the key issues facing the future commercialization of iron-based fluorides, aiming to provide design insights for their further development.</p>","PeriodicalId":10046,"journal":{"name":"Chemical record","volume":"26 10","pages":""},"PeriodicalIF":8.9,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148673241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bruna R Schneider, Laura D de Avila, Mauricio C D F Xavier, Alex F C Flores, Liane K Soares, Gabriel P da Costa, Angelita M Barcellos
{"title":"Sulfur- and Selenium-Decorated Coumarins: Synthetic Strategies Involving Cyclization and Late-Stage Functionalization.","authors":"Bruna R Schneider, Laura D de Avila, Mauricio C D F Xavier, Alex F C Flores, Liane K Soares, Gabriel P da Costa, Angelita M Barcellos","doi":"10.1002/tcr.70261","DOIUrl":"https://doi.org/10.1002/tcr.70261","url":null,"abstract":"<p><p>Chalcogen-containing coumarins have attracted considerable attention as a versatile class of heterocyclic compounds because sulfur- and selenium-substituted derivatives can significantly influence molecular reactivity, electronic characteristics, and biological activity. Over the past decades, synthetic approaches toward these compounds have advanced through two main strategies: direct construction of the coumarin framework through cyclization processes and late-stage functionalization of preformed coumarin scaffolds. This review provides a comprehensive survey of the methodologies reported over the past two decades for the preparation of chalcogen-substituted coumarins, with particular emphasis on derivatives functionalized at the C-3 and C-4 positions. Special attention is given to substrate scope, regioselectivity, mechanistic insights, and the use of modern enabling technologies as well as a literature-based quantitative analysis.</p>","PeriodicalId":10046,"journal":{"name":"Chemical record","volume":" ","pages":"e70261"},"PeriodicalIF":8.9,"publicationDate":"2026-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149164544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Md Saiful Alam, Kazi Mohammed Mehedi Hassan, Monika Tarafdar, Mohammad Imran Hossain, Mohammad Anwar Parvez, Mostafizur Rahaman, Mohammad A Hasnat
{"title":"Surface-Enhanced Raman Spectroscopy Aptasensors for Nucleic-Acid Detection: Advances, Challenges, and Future Perspectives.","authors":"Md Saiful Alam, Kazi Mohammed Mehedi Hassan, Monika Tarafdar, Mohammad Imran Hossain, Mohammad Anwar Parvez, Mostafizur Rahaman, Mohammad A Hasnat","doi":"10.1002/tcr.70259","DOIUrl":"https://doi.org/10.1002/tcr.70259","url":null,"abstract":"<p><p>Nucleic-acid biomarkers play pivotal roles in disease diagnosis, therapeutic monitoring, and precision medicine, creating an urgent demand for analytical platforms combining high sensitivity, molecular specificity, and rapid detection. Surface-enhanced Raman spectroscopy (SERS) integrated with aptamers, short single-stranded DNA or RNA oligonucleotides, has attracted considerable attention by coupling programmable molecular recognition with ultrasensitive plasmon-enhanced Raman detection. This review evaluates recent advances in aptamer-based SERS biosensors for nucleic-acid analysis, systematically examining sensing mechanisms, plasmonic substrate engineering, aptamer immobilization, signal-transduction pathways, and amplification approaches, including catalytic hairpin assembly, hybridization chain reaction, rolling circle amplification, and CRISPR-assisted systems. Recent developments in microfluidics, artificial intelligence-assisted spectral analysis, portable Raman instrumentation, and point-of-care platforms are assessed while distinguishing true aptamer-mediated sensing from conventional hybridization-based DNA detection. Rational hotspot engineering, deterministic nanogap architectures, and advanced amplification strategies have enabled detection from femtomolar to attomolar levels with improved selectivity, multiplexing, and reproducibility. Challenges including substrate variability, quantitative standardization, aptamer stability, biosafety, and clinical translation are discussed. Future directions toward standardized, intelligent, clinically deployable SERS platforms for next-generation molecular diagnostics and precision healthcare are proposed.</p>","PeriodicalId":10046,"journal":{"name":"Chemical record","volume":" ","pages":"e70259"},"PeriodicalIF":8.9,"publicationDate":"2026-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149166065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pavel A Abramov, Pavel S Postnikov, Natalia S Soldatova, Rajesha Kumar Swain, Chullikkattil P Pradeep
{"title":"Noncovalent Interactions Surrounding Polyoxometalates: From Chemistry to Materials Applications.","authors":"Pavel A Abramov, Pavel S Postnikov, Natalia S Soldatova, Rajesha Kumar Swain, Chullikkattil P Pradeep","doi":"10.1002/tcr.70229","DOIUrl":"https://doi.org/10.1002/tcr.70229","url":null,"abstract":"<p><p>Polyoxometalates (POM) are one of the areas of inorganic chemistry that is actively developing due to the broad application of POM-based materials in the emerging areas of modern science and technology. POMs are a huge family of oxocomplexes distinguished by specific intrinsic properties dependent on the size, structure, and charge. The key role in the performance of POM anions is the ability to generate various interactions with a huge number of species (both charged and neutral). This review is focused on the analysis of the modern trends in the most excited type of bonds-noncovalent interactions-their structural characteristics, and the application in the design of advanced materials.</p>","PeriodicalId":10046,"journal":{"name":"Chemical record","volume":" ","pages":"e70229"},"PeriodicalIF":8.9,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149126773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Saba Ali, Mustafa Tuzen, Jamil A Buledi, Anwar Ul Haq, Swarup Kumar Tarai
{"title":"Picoscale Light-Matter Interactions in Plasmonic, Polaritonic, and van der Waals Nanostructures.","authors":"Saba Ali, Mustafa Tuzen, Jamil A Buledi, Anwar Ul Haq, Swarup Kumar Tarai","doi":"10.1002/tcr.70260","DOIUrl":"https://doi.org/10.1002/tcr.70260","url":null,"abstract":"<p><p>Picophotonics describes light-matter interactions in which atomic-scale structure, sub-nanometer confinement, or picometer-scale structural variations significantly influence optical response. This review establishes a unified framework for understanding these interactions across plasmonic picocavities, molecular systems, and van der Waals (vdW) materials and heterostructures. We examine key mechanisms governing extreme optical confinement, including nonlocality, electron tunneling, charge-transfer effects, excitonic interactions, and phonon/plasmon polaritons. Experimental approaches, including scanning tunneling microscopy-based optical measurements, tip-enhanced Raman spectroscopy, near-field optical microscopy, and ultrafast spectroscopy, are discussed together with electromagnetic and quantum-mechanical modeling methods. Particular emphasis is placed on how atomic-scale structural variations, interfacial geometry, and material composition regulate optical response and enable applications in single-molecule spectroscopy, chemical sensing, cavity-modified chemistry, and quantum photonics. We further compare metallic picocavities with vdW polaritonic and hybrid plasmonic-vdW platforms in terms of confinement, losses, tunability, reproducibility, and scalability. Finally, key challenges involving experimental artifacts, heating, fabrication, and quantitative metrology are critically assessed, providing perspectives toward reproducible and programmable picoscale light-matter interactions.</p>","PeriodicalId":10046,"journal":{"name":"Chemical record","volume":" ","pages":"e70260"},"PeriodicalIF":8.9,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149126835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Recent Advances in SiO<sub>2</sub>-Based Nanocomposites for Triboelectric Nanogenerators and Green Tire Vehicles.","authors":"Yasser Vasseghian, Nguyễn Hoàng Ly, Hyun-Jong Paik, Sang-Woo Joo","doi":"10.1002/tcr.70255","DOIUrl":"https://doi.org/10.1002/tcr.70255","url":null,"abstract":"<p><p>Silica (SiO<sub>2</sub>) is an earth-abundant, low-cost material that has been explored for use in triboelectric nanogenerators (TENGs) for sustainable energy generation and in ecofriendly tires to support a healthy ecosystem. In particular, SiO<sub>2</sub>-based nanocomposites hold promise for applications in both TENGs and green tires, yet literature reviews on these applications are limited, with most research focusing on other composites. This study provides methods for synthesizing SiO<sub>2</sub>-based nanocomposites on conductive substrates for use in TENGs and for synthesizing SiO<sub>2</sub>-based elastomers for use in green-tire vehicles. First, the basic principles of TENGs and how these systems work are briefly described. Then, the types of SiO<sub>2</sub>-based nanocomposites and the relationship between structure and properties are reviewed. This review aims to provide a chemistry-based perspective to better understand the roles of SiO<sub>2</sub> in these systems. It suggests new avenues for designing more efficient materials and, by focusing on the role of the interface and providing a coherent framework for the relationship between material design and performance, contributes to the development of advanced energy-harvesting systems and enhances the tire performance of rubber composites. This study summarizes past contributions of SiO<sub>2</sub>-based materials to TENGs and their role in advancing sustainable transportation over the last decade. Finally, this work provides perspectives on opportunities and challenges for the near-future advancement of green tires and triboelectric devices, leveraging the design functionalities of SiO<sub>2</sub>-based nanocomposites (or elastomers) to engineer high performance.</p>","PeriodicalId":10046,"journal":{"name":"Chemical record","volume":" ","pages":"e70255"},"PeriodicalIF":8.9,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149073725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jagroop Singh, Rekha Thakur, Vijay Luxami, Kamaldeep Paul
{"title":"Copper-Mediated C─H Amination of Hetero (Arene) Scaffolds via Amide Directing Group: Unlocking Bioactive Pharmacophore for Next-Generation Drug Discovery.","authors":"Jagroop Singh, Rekha Thakur, Vijay Luxami, Kamaldeep Paul","doi":"10.1002/tcr.70258","DOIUrl":"https://doi.org/10.1002/tcr.70258","url":null,"abstract":"<p><p>Copper-mediated C─H amination has emerged as a powerful and sustainable strategy for constructing nitrogen-containing bioactive scaffolds, providing an efficient alternative to traditional cross-coupling methodologies. Historically, precious metals have dominated C─H amination chemistry but often suffer from limitations, including high cost, toxicity, and limited availability. In contrast, copper-based reactions offer several advantages: it is cost-effective, less toxic, earth-abundant, biocompatible, and environmentally benign, while minimizing the formation of undesired byproducts. This transformation enables the streamline synthesis of pharmacologically relevant heterocycles and alkaloids, offering access to bioactive molecules with enhanced therapeutic potential. This review highlights recent advances in design, mechanistic insights, and synthetic applications of copper-mediated C─H amination in medicinal chemistry. Particular emphasis is placed on its role in the construction of complex nitrogen frameworks and its integration into drug discovery and development. In addition, emerging approaches such as electrochemical C─H amination are discussed, demonstrating how these greener and more sustainable methodology can further reduce environmental impact while maintaining synthetic efficiency. By bridging the disciplines of transition-based synthesis and medicinal chemistry, this review underscores the pivotal role of copper in advancing next-generation, sustainable synthetic methodologies and inspiring future innovations in amine-based drug discovery.</p>","PeriodicalId":10046,"journal":{"name":"Chemical record","volume":" ","pages":"e70258"},"PeriodicalIF":8.9,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149079990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alexey A Festa, Leonid G Voskressensky, Matvey K Shurikov, Pavel S Postnikov, Valentine P Ananikov
{"title":"Artificial Intelligence in Organic Synthesis.","authors":"Alexey A Festa, Leonid G Voskressensky, Matvey K Shurikov, Pavel S Postnikov, Valentine P Ananikov","doi":"10.1002/tcr.70246","DOIUrl":"https://doi.org/10.1002/tcr.70246","url":null,"abstract":"<p><p>Artificial intelligence (AI) is rapidly reshaping organic synthesis; nevertheless, currently most laboratory practice still remains driven by human intuition, trial-and-error optimization, and manual interpretation of analytical data. Here, we synthesize recent advances that move AI from isolated demonstrations to a practical toolkit spanning the full experimental cycle: molecular design and prioritization, computer-assisted synthesis planning and route selection, catalyst and condition optimization, and AI-enabled product identification and verification using chromatographic and spectroscopic data. We analyze these developments using a three-level hierarchy-AI assistant, AI analyst, and emerging AI researcher-and map them onto what bench chemists can deploy today, from commercial and open retrosynthesis platforms to multimodal structure elucidation workflows. We also frame adoption as a strategic choice among three trajectories, arguing that near-term impact will be dominated not by fully autonomous robotic laboratories but by scalable \"digital co-expert\" approaches that compress candidate spaces and accelerate decision-making while preserving rigorous human validation. Finally, we highlight why data quality, laboratory variability, underreported negative results, and black-box failure modes demand calibrated reliance, mechanistic plausibility checks, and standardized synthesis applications. Together, these trends point to an end-to-end digital thread for organic synthesis that optimizes decisions across workflows rather than individual steps.</p>","PeriodicalId":10046,"journal":{"name":"Chemical record","volume":" ","pages":"e70246"},"PeriodicalIF":8.9,"publicationDate":"2026-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149069306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Canxuan Gu, Dong Fang, Yangsong Liu, Sui Peng, Yang Hu, Xianglu Yin, Dongbin Zhang
{"title":"Silver Vanadate: From Synthesis to Diverse Applications and Perspectives.","authors":"Canxuan Gu, Dong Fang, Yangsong Liu, Sui Peng, Yang Hu, Xianglu Yin, Dongbin Zhang","doi":"10.1002/tcr.70257","DOIUrl":"https://doi.org/10.1002/tcr.70257","url":null,"abstract":"<p><p>Silver vanadate is an important class of multifunctional inorganic materials with broad application prospects in photocatalysis, sensing, batteries, and antibacterial fields, owing to its unique crystal structure and excellent optical, electrical, and catalytic properties. This paper systematically reviews the main synthesis methods of silver vanadate, including hydrothermal, ion exchange, and sol-gel methods, among which the hydrothermal method is the most widely used due to its simple process and high product crystallinity. The research progress in photocatalytic degradation of organic pollutants, antibacterial activity, and electrochemical energy storage is emphatically discussed. Finally, the current challenges in large-scale preparation and long-term stability are analyzed, and future research directions, including the construction of novel composite systems, innovation in modification strategies, and exploration of practical applications, are prospected.</p>","PeriodicalId":10046,"journal":{"name":"Chemical record","volume":" ","pages":"e70257"},"PeriodicalIF":8.9,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149058605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The First Organic Catalytic Reaction: Constantin Kirchhoff's Experiments and Their Place in the History of Catalysis.","authors":"Vadim Yu Kukushkin","doi":"10.1002/tcr.70256","DOIUrl":"https://doi.org/10.1002/tcr.70256","url":null,"abstract":"<p><p>This essay concerns Constantin Kirchhoff (1764-1833), a Russian chemist of German origin working at the Imperial Court Apothecary in St. Petersburg. In 1811, a quarter century before Berzelius coined \"catalysis,\" Kirchhoff converted starch to grape sugar (glucose) with vitriolic (sulfuric) acid and established that a charge of acid far too small to have combined with the starch nevertheless converted all of it, that reducing the acid lengthened the process without altering the product, and that the acid remained, to be neutralized, at the end. The practical result-crystalline sugar from potato starch-was promptly recognized and rewarded. The finding beneath it was not: Berzelius credited the discovery to Kirchhoff and stated that the acid was recovered unchanged, but the notice did not take, and Kirchhoff was remembered for the sugar. What he set down was a protocol of unusual completeness for its date-the proportions, the four runs, and the times-made at manufacturing scale before Academy witnesses, and he claimed nothing beyond what he had weighed. On this evidence, Kirchhoff was the first to record what would later be recognized as a homogeneous catalytic reaction in organic chemistry, in a year that had neither the concept nor a word for it.</p>","PeriodicalId":10046,"journal":{"name":"Chemical record","volume":" ","pages":"e70256"},"PeriodicalIF":8.9,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149036588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}