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Hydrogel-based flexible electronics have received increasing attention owing to the requirement in a variety of applications. However, the design and development of underwater and self-adaptive high-temperature strain sensors remain a significant challenge because of the swelling and dehydration of hydrogels in aquatic environments and extreme climate conditions. Herein, a versatile gel with superior self-adhesiveness, long-lasting underwater stability, excellent high-temperature tolerance and long-term non-drying properties is successfully prepared, which can serve as a wearable sensor for precisely and reliably detecting diverse body movements and the direction of human movements in air and aquatic environments. Meanwhile, based on the Morse code expression, the as-fabricated gel sensor can also be utilized as a wearable communication device for delivering various messages to the receiver. Furthermore, a wireless sensor with high-temperature adaptability is constructed, which can transmit in real time the motion signals at high temperature to the specific APP of a smartphone at room temperature via wireless communication. This strategy provides a new perspective and great convenience for motion monitoring under harsh conditions. In particular, the as-prepared gel demonstrates an obvious transparency-shifting behavior in different polar solvents, thus inspiring us to engineer it as a novel water-writing paper for achieving repeatable "writing–erasing" applications. [ABSTRACT FROM AUTHOR]

Organophosphorous pesticides pose a significant threat to public health, making its detection critical. Herein, a new fluorescent metal–organic framework, Eu-NDC, was synthesized, which possessed a 3D supramolecular structure assembled through π⋯π interactions between the naphthalene rings in its adjacent coordination-bonded layers. Then, four different products of the Eu-NDC MOF (Eu-NDC-1/2/3/4) with different morphologies were further obtained by altering the ratio of the raw materials. Among them, the fluorescence properties and BET surface area of the micro-nanoscale Eu-NDC-3 were significantly enhanced, making it the most favorable for detection. Eu-NDC-3 as a turn-off fluorescence probe for methyl paraoxon (DMNP) exhibited excellent sensitivity and selectivity, anti-interference and durability. Thus, considering these features, an intelligent logic gate was designed, showing great promise for application in smart sensing. Furthermore, an Eu-NDC-3-loaded electrospun fibrous strip was fabricated as a portable and in situ platform for visual DMNP assay. [ABSTRACT FROM AUTHOR]

Rapid, sensitive, and quantitative detection of biomarkers is needed for early diagnosis of disease and surveillance of infectious outbreaks. Here, we exploit a plasmonic syringe filter and surface-enhanced Raman spectroscopy (SERS) in the development of a rapid detection system, using human IgG as a model diagnostic biomarker. The novel assay design facilitates multiple passages of the sample and labeling solution through the detection zone enabling us to investigate and maximize sampling efficiency to the capture substrate. The vertical flow immunoassay process in this study involves the utilization of filter paper embedded with gold nanoparticles (AuNPs) to form a plasmonic substrate. Capture antibody (anti-human IgG) is then immobilized onto the prepared plasmonic paper and inserted into a vertical flow device (syringe filter holder). Sample solution is passed through the filter paper and the target antigen (human IgG) is selectively captured by the immobilized antibody to form an antibody–antigen complex. Next, functionalized AuNPs as extrinsic Raman labels (ERLs) are passed through the filter paper to label the captured biomarker molecules forming a layered structure. This sandwiched geometry enhances plasmonic coupling and SERS signal to provide highly sensitive detection of biomolecules. Systematic studies to investigate the impact of multiple infuse/withdraw cycles of the sample and labeling solutions reveal that antigen and ERL binding are maximized with 10 and 20 cycles, respectively. The optimized assay achieves a detection limit of ∼0.2 ng mL−1 for human IgG with a total assay time of less than 5 minutes, meeting the demands for rapid point of care diagnostics. Additionally, the optimized platform was implemented in the quantitative analysis of the SARS-CoV-2 nucleocapsid protein, the typical target in commercial, FDA-approved rapid antigen tests for COVID-19. [ABSTRACT FROM AUTHOR]

Microfluidic devices have emerged as advantageous tools for detecting environmental contaminants due to their portability, ease of use, cost-effectiveness, and rapid response capabilities. These devices have wide-ranging applications in environmental monitoring of air, water, and soil matrices, and have also been applied to agricultural monitoring. Although several previous reviews have explored microfluidic devices' utility, this paper presents an up-to-date account of the latest advancements in this field for environmental monitoring, looking back at the past five years. In this review, we discuss devices for prominent contaminants such as heavy metals, pesticides, nutrients, microorganisms, per- and polyfluoroalkyl substances (PFAS), etc. We cover numerous detection methods (electrochemical, colorimetric, fluorescent, etc.) and critically assess the current state of microfluidic devices for environmental monitoring, highlighting both their successes and limitations. Moreover, we propose potential strategies to mitigate these limitations and offer valuable insights into future research and development directions. [ABSTRACT FROM AUTHOR]

The New Journal of Chemistry, published by The Royal Society of Chemistry and the Centre National de la Recherche Scientifique, contains a variety of research papers on topics such as graphite exfoliation, EPR characterization of N-oxyl radicals, anticancer efficacy, protoplast regeneration, semiconducting carbon nanotubes, and electrochemical sensing. The journal aims to provide new directions in chemistry and offers valuable insights and research findings for library patrons conducting research in these areas. The document is a list of papers published in the journal, covering a range of topics in chemistry and materials science, including pH-responsive nanotheranostics, synthesis of fused molecules, removal of tetracycline from water, and comparison of different species using UPLC-Q-TOF-MS. [Extracted from the article]

The document is a contents list for the New Journal of Chemistry, a publication by The Royal Society of Chemistry and the Centre National de la Recherche Scientifique. It features a variety of articles and papers covering topics such as anti-counterfeiting printing, monitoring platinum(IV) complexes, and the removal of uranium from the kidneys. The journal also provides information on training courses and resources for professional development in chemistry. The papers offer valuable insights and advancements in the field, making it a valuable resource for researchers and professionals in chemistry. [Extracted from the article]

The New Journal of Chemistry, published by The Royal Society of Chemistry and the Centre National de la Recherche Scientifique, has released a list of papers published in 2024. These papers cover a wide range of topics in the field of chemistry, including photothermal properties of MXenes, pseudomorphic transformation of silica, and adsorption behavior of chloramphenicol. Other papers explore drug abuse detection in hair samples, photocatalytic performance, small-molecule tracer imaging, catalytic studies, colorimetric sensing, and more. These papers offer valuable research and insights in various areas of chemistry. [Extracted from the article]

Semicarbazide (SEM) is a metabolite of antibiotic nitrofurazone and a food contaminant in food production, showing potential carcinogenic, mutagenic, teratogenic, and toxic effects on human health. It is urgent to develop a highly efficient and sensitive assay for visual detection of SEM. In this paper, a pyrrolopyrrole cyanine fluorescent probe (PPCy-1) was reported for visualization and quantitative analysis of SEM through a chromophore reaction sensing mechanism for the first time. The probe towards SEM exhibited a fast response (10 min), a low detection limit (0.18 μM), high selectivity, and distinct dual ratiometric fluorescence turn-on and colorimetric modes. Its practicability was further verified by detecting SEM in meat, water, and honey samples with satisfactory recovery values. More importantly, a smartphone-assisted portable testing platform was constructed based on a PPCy-1-immobilized test paper or a polyamide thin film with a color scanning APP for real-time and on-site detection of SEM. This work provides low-cost, convenient, and rapid assays for visual SEM detection, which have potential applications in food safety monitoring. [ABSTRACT FROM AUTHOR]

For the past few years, sweat analysis for health monitoring has attracted increasing attention benefiting from wearable technology. In related research, the sensitive detection of uric acid (UA) in sweat with complex composition based on surface-enhanced Raman spectroscopy (SERS) for the diagnosis of gout is still a significant challenge. Herein, we report a visualized and intelligent wearable sweat platform for SERS detection of UA in sweat. In this wearable platform, the spiral channel consisted of colorimetric paper with Ag nanowires (AgNWs) that could capture sweat for SERS measurement. With the help of photos from a smartphone, the pH value and volume of sweat could be quantified intelligently based on the image recognition technique. To diagnose gout, SERS spectra of human sweat with UA are collected in this wearable intelligent platform and analyzed by artificial intelligence (AI) algorithms. The results indicate that the artificial neural network (ANN) algorithm exhibits good identification of gout with high accuracy at 97%. Our work demonstrates that SERS-AI in a wearable intelligent sweat platform could be a feasible strategy for diagnosis of gout, which expands research on sweat analysis for comfortable and noninvasive health monitoring. [ABSTRACT FROM AUTHOR]

The document is a contents list for the Journal of Materials Chemistry C. It includes reviews, new journal information, and a list of papers published in the issue. The topics covered in the papers range from nanomaterials for smartphone sensors to quantum dot light-emitting diodes. The journal aims to connect the world with the chemical sciences and is dedicated to sustainable chemistry and new solutions. [Extracted from the article]

This document is a contents list for the New Journal of Chemistry, a publication by The Royal Society of Chemistry and the Centre National de la Recherche Scientifique. It provides a list of articles and papers featured in the latest issue of the journal, covering a diverse range of topics in chemistry. Some of the topics include enantioselective insertion of vinyl diazoacetates, building a data science toolbox for designing catalysts, and the synthesis and coordination behavior of a ferrocene phosphinostibine. The document also includes a correction to a previously published paper. [Extracted from the article]

The document is a contents list for the journal "Dalton Transactions: An International Journal of Inorganic Chemistry." It includes various articles and papers on topics such as molecular transition metal catalysts, spectroscopic techniques, synthesis of materials, and studies on different compounds. The journal aims to connect the global chemistry community and invest its profits back into the field. This document is a list of research papers published in the journal Dalton Transactions. The papers cover a range of topics including electrocatalytic reduction of CO2, assembly of clusters, rechargeable batteries, and carbon nanoarchitectures. Each paper is summarized by its title and authors, providing a brief overview of the research topic. The document is a valuable resource for library patrons conducting research in various scientific fields. [Extracted from the article]

The document is a contents list for the Journal of Materials Chemistry A, which features reviews and papers on various topics related to materials for energy and sustainability. Some of the topics covered include metal-organic frameworks for purification, 3D-printed architectures for electromagnetic interference shields, and advancements in energy-efficient chlorine production. The journal aims to connect the world with the chemical sciences and reinvest profits into the chemistry community. The document is a compilation of research papers published in the Journal of Materials Chemistry A in 2024, covering proton conductors, photocatalytic hydrogen generation, supramolecular encapsulation, rechargeable batteries, and flame retardant materials. It also includes a retraction notice for a previously published paper. [Extracted from the article]

The New Journal of Chemistry is a publication that focuses on the chemical sciences and aims to connect researchers worldwide. The document provided is a contents list for the journal's 2024 edition. It includes papers on various topics such as membrane modification, nanoparticle synthesis, targeted therapy, catalysis, and material properties. Two specific papers are highlighted: one discusses the use of cationic lipids in non-viral gene delivery, while the other explores the confinement of metal-organic framework (MOF) etching-induced hollow structures for enhanced activation of peroxymonosulfate. The journal is published by The Royal Society of Chemistry and the Centre National de la Recherche Scientifique. [Extracted from the article]

Thread-based microfluidic colorimetric sensors have been deemed a potential tool that may be incorporated into textiles for non-invasive sweat analysis. Nevertheless, their poor performance significantly limits their practical uses in sweat glucose detection down to 20 μM. Herein, a microfluidic glucose sensing device containing a salt-responsive thread is developed for the highly sensitive detection of glucose in human sweat. By grafting a zwitterionic polymer brush—which could react to ionic strength by changing the conformation of the polymer chains from the collapsing state to the stretching state—onto the cotton thread, the salt-responsive thread was created. Compared to the pristine cotton thread, the modified thread has better ion-capture capabilities, a more noticeable swelling effect, and a higher ability to absorb water. These enable a significant enrichment of glucose when the saline solution passes through it. The salt-responsive thread was employed to construct a thread/paper-based microfluidic sensing device for the monitoring of glucose in artificial sweat, exhibiting a sensitivity of −0.255 μM−1 and a detection limit of 14.7 μM. In comparison to the pristine cotton thread-based device, the performance is significantly superior. Using a hydrophobic fabric and salt-responsive threads, a glucose-sensing headband was prepared for on-body sweat glucose monitoring. With the use of a smartphone-based image analysis system, the headband can detect the concentration of glucose in a volunteer's perspiration. Using the thread-based salt-responsive zwitterionic polymer brush might offer a novel approach to creating wearable sweat sensors with extremely high sensitivity. [ABSTRACT FROM AUTHOR]

The Faraday Discussion on rechargeable non-aqueous metal–oxygen batteries is summarised. The remarks paper highlights the specific science contributions made in the vital areas of oxygen reduction and evolution reaction mechanisms in non-aqueous electrolytes; material developments for stable metal–oxygen battery cathodes; achieving stable metal anodes and protected interfaces; and, finally, contributions concerning the progress towards practical metal–oxygen batteries. Key conclusions associated with these papers will be highlighted in an order such that readers can identify papers that they would like to explore in more detail. [ABSTRACT FROM AUTHOR]

The document is a contents list for the Journal of Materials Chemistry C. It includes reviews, papers, and communications on various topics related to materials for optical, magnetic, and electronic devices. The journal is published by The Royal Society of Chemistry and aims to connect the world with the chemical sciences. The contents list provides a range of research articles on topics such as organic thin-film transistor sensors, quantum dots, conducting polymer films, perovskite light-emitting diodes, and more. [Extracted from the article]

The document is a contents list for the Journal of Materials Chemistry A, featuring articles and reviews on various topics such as energy and sustainability, sodium storage, pressure sensors, and green nanogenerators. The journal aims to support the chemistry community by reinvesting its profits. The papers cover a wide range of subjects, including passive cooling, solar-powered ammonia production, formaldehyde degradation, and oil spill removal, among others. Each paper offers unique insights and findings in their respective fields. [Extracted from the article]

The document is a contents list for the journal "Dalton Transactions: An International Journal of Inorganic Chemistry." It includes the titles and authors of various articles published in the journal, covering topics such as sulphur spectrum of trivalent lanthanoid oxysulphides, magnetic relaxation in manganese coordination compounds, CO2 absorption/desorption properties, and more. The journal is published by The Royal Society of Chemistry, a leading chemistry community. The papers in this journal cover a wide range of topics in inorganic chemistry, including battery technology, catalysis, materials science, and theoretical analysis of metal complexes. These papers provide valuable insights into scientific phenomena and offer potential applications in various fields. [Extracted from the article]

The document is a contents list for the journal "Green Chemistry," published by the Royal Society of Chemistry. It features cutting-edge research on sustainable chemistry and a greener future. The contents list includes articles on topics such as electrosynthesis, sustainable chemical synthesis, corrosion science, lignin modification, and more. The journal aims to connect the world with the chemical sciences and invest profits back into the chemistry community. This document is a list of papers published in the journal Green Chemistry. The papers cover a range of topics related to sustainable and environmentally friendly chemistry. Some of the topics include the efficient fractionation of hemicellulose from hardwood pulp, the synthesis of fructose-based surfactants, and the electrochemical synthesis of formaldehyde. The papers provide valuable research for library patrons interested in these specific areas of study. [Extracted from the article]

This document is a contents list for the New Journal of Chemistry, providing a summary of papers published in 2024. The journal covers a wide range of topics in the chemical sciences, including selenium compounds as antiviral agents, guanidinium-terminated gold nanoparticles for protein delivery, and the synthesis of macroporous nanocarbon for sodium ion batteries. The journal aims to connect the global chemistry community and reinvest profits into the field. Additionally, the document includes an expression of concern and a correction for previous articles. [Extracted from the article]

The document is a contents list for the journal "Analyst" published by the Royal Society of Chemistry. It includes a range of articles and papers on various topics in the field of chemistry. Some of the topics covered include bacterial transglycosylation, nanozyme kinetics, fiber optic cadmium ion sensors, and electrochemical biosensors. The journal aims to connect the global chemistry community and reinvest its profits back into the field. [Extracted from the article]

The document is a contents list for the journal "Analyst" published by the Royal Society of Chemistry. It includes a range of papers on various topics such as nanomaterial-induced hepatotoxicity, pH-dependent complex formation, ultrasensitive detection of circulating miRNA, and determining chromosomal instability in breast cancer cells. The journal covers a wide range of scientific research and aims to connect the world with the chemical sciences. [Extracted from the article]

The document is a contents list for the Journal of Materials Chemistry C. It includes a range of papers and communications on topics such as solar cells, photodetectors, crystal growth, and fluorescence detection. The journal aims to connect the global chemistry community and invest its profits back into the field. The document provides a comprehensive overview of the articles published in the journal's latest issue. [Extracted from the article]

This document is a contents list for the journal "Dalton Transactions: An International Journal of Inorganic Chemistry." It provides a list of papers published in the latest issue of the journal, covering a wide range of topics in chemistry. The papers explore subjects such as stimuli-responsive luminescence, the synthesis and reactivity of different compounds, and the development of new sensors, luminescent materials, catalysts, and coordination compounds. The journal aims to foster connections within the global chemistry community and reinvest its profits into the field. Additionally, the document includes a correction for a previous paper. [Extracted from the article]

The document is a contents list for the Journal of Materials Chemistry A, a publication by the Royal Society of Chemistry. The journal focuses on materials for energy and sustainability. The contents list includes various articles and papers on topics such as solar energy harvesting, catalytic graphitization of biomass-based materials, wearable flexible pressure sensors, and molecular sieving of hydrocarbons. The journal aims to provide a platform for research on materials that contribute to a sustainable and inclusive future. This document is a list of papers published in the journal "Journal of Materials Chemistry A" in 2024. The papers cover a range of topics related to materials chemistry, including hydrogen evolution, lithium-ion batteries, solid-state lithium metal batteries, and photocatalytic reactions. The document also includes corrections and a retraction of a previously published paper. [Extracted from the article]

Ensuring the stability of the electrode and electrolyte in Li–O2 batteries and achieving a comprehensive understanding of parasitic side reaction management during cycling are key issues for the progress of this promising energy storage technology. Conditions that favour formation of either Li2O2 or Li2CO3 in Li–O2 cells on carbon-based electrodes were investigated. Operando Raman microscopy measurements and ex situ Raman and X-ray photoelectron spectroscopy (XPS) analyses were performed for Li–O2 systems using Li[ClO4]/DMSO as the electrolyte and carbon paper (CP) and carbon paper with carbon nanotubes (CPCNT) as electrodes. Using CP electrodes (either treated or untreated with O2 plasma), the major discharge product formed was Li2O2. In contrast, for CPCNT electrodes, the formation of Li2CO3 as the main discharge product was observed at lower capacities, then significant formation of Li2O2 proceeded at higher discharge capacities. XPS highlighted that the surface chemistry of the CPCNT electrode comprised fluorine and a variety of iron species, which could be linked to the promotion of Li2CO3 formation. Furthermore, it was observed that when Li2CO3 is the main discharge product, the active sites of functional groups on carbon surfaces that favour carbonate formation become coated/passivated. Consequently, the dominant reaction pathway then alters, leading to the growth of Li2O2 over the surface. These outcomes emphasized the important role in cycling stability of the active sites on carbon electrodes, arising from the synthesis process or possible contaminants. [ABSTRACT FROM AUTHOR]

A portable and non-invasive sensor presents an innovative way to measure inflammation biomarkers in exhaled breath condensate (EBC). This research is focused on developing a miniaturized bipolar electrochemical sensor that can be connected to a smartphone app. This device will be able to detect adding known amounts of nitrite (spikes) to a salt solution and small amounts of nitrite ions in collected real samples in EBC. The sensor was fabricated and tested for its rapid electron transfer capability and ability to detect nitrite ions even at very low concentrations and low real sample levels. In the proposed setup, when the required potential was applied by using a direct power supply, the nitrite ions were oxidized electrocatalytically at amine-functionalized graphene oxide (AGO) decorated with gold nanoparticles on a carbon paper anodic pole. On the other hand, the reduction reaction of Prussian blue occurred at the cathodic pole of the bipolar electrode simultaneously. This strategy led to a change in color from blue to white as a result of the reduction process and the color change is proportional to the concentration of nitrite ions in the analytical solution. The combination of smartphones with the colorimetric method has resulted in a platform for the detection of test strips that is more visual and convenient. The amperometry and voltammetric methods of nitrite detection showed a linear range of up to 1230 μM. The bipolar electrochemical sensor was able to detect the clinically relevant range of nitrite from 0.5 to 85 μM in a buffer with an ultralow detection limit (LOD) of 250 nM (S/N = 3), fast response and excellent selectivity. It was benchmarked by utilizing pre-characterized real EBC samples to differentiate patients with respiratory diseases from healthy volunteers. By tracking the results of nitrite measurements over time, it has become possible to detect trends and changes in an individual's nitrite ion concentration and to potentially identify lung inflammation earlier. [ABSTRACT FROM AUTHOR]

This document is a contents list for the journal "Dalton Transactions: An International Journal of Inorganic Chemistry." It features a compilation of research papers covering various topics such as metal dioxo complexes, piezo-photocatalytic CO2 reduction, and carbonaceous materials for lithium-ion batteries. The journal aims to foster connections within the chemistry community and stimulate innovative ideas. Additionally, the document includes corrections to two previously published papers. [Extracted from the article]

This document is a contents list for the journal "Green Chemistry," published by the Royal Society of Chemistry. It features research papers on various topics related to sustainable chemistry, including photocatalytic upgrading of hydroxymethylfurfural, lignin extraction and nanodispersion, selenium-doped carbon materials, and the valorization of bio-renewable glycerol. The journal also includes tutorial reviews on topics such as Pickering emulsion-derived nano/microreactors and the iron ligand-to-metal charge transfer chemistry in water. Additionally, there are perspective papers, communications, and other research papers covering a range of subjects in green chemistry. The papers provide valuable insights into the development of greener and more sustainable chemical processes. [Extracted from the article]

Porous binder-free carbon electrodes were obtained by impregnating cellulose filter papers with phenolic resin through soft-salt template synthesis and thermal pyrolysis. These self-standing electrodes were used directly in a supercapacitor device. To understand the impacts of filter paper (FP) thickness on carbon filter paper (CFP) morphology, porosity, and surface functionalities, five different materials were examined. The CFP electrode thickness was adjusted linearly with the FP thickness to produce electrodes ranging from 100 to ∼800 μm. As the thickness of the CFP increased, there was an increase in the specific surface area and oxygen-based functionalities. Electrochemical testing in a 1 M KOH aqueous electrolyte demonstrated that electrode thickness played a key role in electrochemical capacitor (EC) performance, i.e., capacitance enhances linearly when the electrode becomes thinner. For low thicknesses (<280 μm), the capacitance and rate capability decreased slightly with increasing thickness; for high thicknesses, the performance drastically degraded despite the high specific surface area and oxygen surface functionalities. This effect was amplified at high regimes, indicating that high electrode thicknesses and fiber diameters limited electrolyte diffusion in the applied synthesis conditions. Thus, the high material porosity was inaccessible to ion adsorption. Consequently, thinner electrodes showed the highest capacitance (197 F g−1 at 0.1 A g−1) and rate capability (81%) values, exceeding those of their traditional binder-electrode counterparts prepared under similar conditions. Finally, for alkali metal hydroxide solutions, 1 M KOH exhibited a cation match with the salt template (KCl), while CsOH achieved additional capacitance retention (88% at 10 A g−1). Complex ion adsorption mechanisms were observed through a quartz crystal microbalance. [ABSTRACT FROM AUTHOR]

The document is a contents list of the New Journal of Chemistry, published on March 14, 2024. It includes a variety of articles and papers on topics such as SARS-CoV-2 detection, synthesis of branched bottlebrushes, glycosyl sulfonation, catalytic behavior, and more. The journal, published by The Royal Society of Chemistry and the Centre National de la Recherche Scientifique, aims to explore new directions in chemistry. The document provides a comprehensive overview of the articles included in the journal issue, which cover a wide range of topics and provide valuable research and insights in their respective fields. [Extracted from the article]

This document is a contents list for the Journal of Materials Chemistry C, published by the Royal Society of Chemistry. It provides a list of articles and papers published in the journal in 2024, covering a wide range of topics related to materials for optical, magnetic, and electronic devices. The document includes titles, authors, and page numbers for each paper. Additionally, there are two corrections listed at the end of the document. [Extracted from the article]

The document is a contents list for the journal "Dalton Transactions: An International Journal of Inorganic Chemistry." It includes various articles and papers on topics such as copper complexes, lanthanide-based POMs, and coordination polymers. The journal is published by The Royal Society of Chemistry, a leading chemistry community. The document also mentions approved training courses offered by the society. The given document is a list of papers published in the journal Dalton Transactions. The papers cover a range of topics in chemistry, including catalysis, phosphors, materials synthesis, and more. Each paper is identified by its title, authors, and page number. The document also includes a correction and a retraction for two previously published papers. [Extracted from the article]

A unique nanomaterial has been developed for sweat analysis, including glucose level monitoring. Simple resusable low-cost sensors from composite materials based on graphene, hexagonal boron nitride, and conductive PEDOT:PSS (poly(3,4-ethylenedioxythiophene)polystyrene sulfonate) polymer have been developed and fabricated via 2D printing on flexible substrates. The sensors were tested as biosensors using different water-based solutions. A strong increase in the current response (several orders of magnitude) was observed for aqua vapors or glucose solution vapors. This property is associated with the sorption capacity of graphene synthesized in a volume of plasma jets and thus having many active centers on the surface. The structure and properties of graphene synthesized in a plasma are different from those of graphene created by other methods. As a result, the current response for a wearable sensor is 3–5 orders of magnitude higher for the reference blood glucose concentration range of 4–14 mM. It has been found that the most promising sensor with the highest response was fabricated based on the graphene:PEDOT:PSS composite. The graphene:h-BN:PEDOT:PSS (h-BN is hexagonal boron nitride) sensors demonstrated a longer response and the highest response after the functionalization of the sensors with a glucose oxidase enzyme. The reusable wearable graphene:PEDOT:PSS glucose sensors on a paper substrate demonstrated a current response of 10−10 to 10−5 A for an operating voltage of 0.5 V and glucose range of 4–10 mM. [ABSTRACT FROM AUTHOR]

The document is a contents list for the Journal of Materials Chemistry A, published by The Royal Society of Chemistry. It provides a comprehensive overview of the research and advancements in the field of materials chemistry, with a focus on energy and sustainability. The list includes reviews and papers on topics such as metal-organic frameworks, self-healing materials, electrochemical energy storage, and photocatalytic water splitting. Each paper is authored by different researchers and explores different aspects of materials science. The document also includes two corrections to previously published papers. [Extracted from the article]

The document is a contents list for the journal "Dalton Transactions: An International Journal of Inorganic Chemistry." It includes various articles and papers on topics such as combatting bacterial infections, rare-earth metal-organic frameworks, and electrochemical capacitor applications. The journal is published by The Royal Society of Chemistry, a leading chemistry community. The document provides a brief overview of the articles included in the journal issue. The papers cover a range of topics in chemistry, including the synthesis of stable cyclopropenylvinyl ligands, the properties of metal-organic frameworks, the photocatalytic performance of titanium-oxide clusters, and the adsorption mechanisms of heavy metals on silica. Other topics include the synthesis of coordination polymers, the synthesis of salophen complexes, and the behavior of cyanido-bridged complexes. The papers provide valuable insights into various areas of chemical research. [Extracted from the article]

The document is a contents list for the journal "Environmental Science: Processes & Impacts." It includes the ISSN, cover images, and a list of papers featured in the issue. The papers cover a range of topics such as microplastics, mercury in flounder, land use, and the composition of cosmetic products. The journal aims to connect the world with the chemical sciences and is published by The Royal Society of Chemistry. [Extracted from the article]

Bimodal detection facilitates the accurate and reliable detection of cancer biomarkers, which can assist in the early diagnosis of cancer. Herein, S-doped carbon dots (OCDs) with a size of 3 nm and blue emission were synthesized by the hydrothermal treatment of onion extract. The S-doped carbon dots were bioconjugated with an antibody (OCDs@PSAAbHRP) to design a nanoprobe for the detection of prostate specific antigen (PSA), an important serum based prostate cancer biomarker. The detection probe enabled the biomodal assay of PSA via fluorescence immunoassay (FIA) and electrochemical immunoassay (ECIA). In both assays, polyethylenimine stabilized polyaniline nanoparticles (PNPs) were used as the immobilization matrix, which played a major role in widening the linear range of biosensors (0.1 to 100 ng ml−1 for ECIA and 5 to 120 ng ml−1 for FIA). Paper-based and smartphone-integrated fluorescence immuno-array developed using the OCDs@PSAAbHRP detection probe provided cost-effective and rapid detection, while the electrochemical immunoassay provided a high sensitivity (7.8 μA ng−1 ml−1 cm−2) and low detection limit (38 pg ml−1) for PSA detection. The role of OCDs in enhancing the sensor performance was deciphered by carrying out detailed electrochemical studies with HRP enzyme-loaded OCDs. The biosensor was used to detect PSA in human blood serum samples and the results were consistent with conventional techniques. Owing to its analytical properties coupled with simplicity, cost-effectiveness, and portability, the bimodal sensor system has potential for application in clinical analysis. [ABSTRACT FROM AUTHOR]

The document is a contents list for the latest issue of the Journal of Materials Chemistry C, published by The Royal Society of Chemistry. It features articles and papers on various topics, including functional framework materials, organic field-effect transistors, and short peptide hydrogels. The journal aims to connect the world with the chemical sciences. Additionally, the document includes a journal article from The Royal Society of Chemistry in 2024, which investigates the stoichiometric deviation in a mixed cation, mixed halide lead perovskite thin film and its precursor solution. Another article discusses nanoristors made of molybdenum disulfide that are highly uniform, sub-500-millivolt, large-scale, and robust. This article provides detailed information on these topics and is a valuable resource for researchers in the field. [Extracted from the article]