Chemosensors最新文献_第7页

Engineering Branched Au@Ag Nanostar Plasmonic Array for Coupling Electromagnetic Enhancement and SERS Trace Detection of Polystyrene in Aquatic Environments 工程支链Au@Ag纳米星等离子体阵列耦合电磁增强和水中聚苯乙烯SERS痕量检测

3区工程技术

Chemosensors Pub Date : 2023-10-09 DOI: 10.3390/chemosensors11100531

Mingzhu Wu, Jianhang Lin, Da Zheng, Yirui Yang, Zhihao Li, Zhengdong Zhu, Yonghui Shen, Gang Ni, Maofeng Zhang

{"title":"Engineering Branched Au@Ag Nanostar Plasmonic Array for Coupling Electromagnetic Enhancement and SERS Trace Detection of Polystyrene in Aquatic Environments","authors":"Mingzhu Wu, Jianhang Lin, Da Zheng, Yirui Yang, Zhihao Li, Zhengdong Zhu, Yonghui Shen, Gang Ni, Maofeng Zhang","doi":"10.3390/chemosensors11100531","DOIUrl":"https://doi.org/10.3390/chemosensors11100531","url":null,"abstract":"Micro/nanoplastics are widespread in the environment and may cause severe damage to creatures and human beings. Micro/nanoplastic pollution has become a global focus issue; hence, the rapid and accurate detection of micro/nanoplastics is an essential step to ensure health. Herein, we report a surface-enhanced Raman scattering (SERS) technique to sensitively and quantitatively identify micro/nanoplastics in environmental water samples. A three-dimensional hierarchical Au@Ag nanostar (NSs) was synthesized and employed as an efficient SERS substrate. The “lightning rod effect” generated by tip branches of the nanostars and the coupling effect of the neighboring branches of the nanostar array enabled the ultra-trace detection of crystal violet (CV) down to 10−9 M, even with a portable Raman device. Moreover, the hydrophobic property of the SERS substrate endowed it with a desirable enrichment effect, which meant an increase in the concentration or quantity of the micro/nanoplastic particles. And thereafter, the SERS sensor achieved a highly sensitive detection of polystyrene (PS) particle standard solution at a low concentration of 25 μg/mL or 2.5 μg/mL. Importantly, the detected concentration and the SERS intensity followed a nearly linear relationship, indicating the capability of quantitative analysis of micro/nanoplastics. In addition, the SERS sensor was successfully extended to detect PS particles in environmental water samples, including tap water, sea water, and soil water, and the detection concentration was determined to be 25 μg/mL, 2.5 μg/mL, and 25 μg/mL, respectively. The present Au@AgNSs array substrate with a two-order magnitude signal amplification further exhibited significant advantages in the label-free analysis of micro/nanoplastics in real water samples.","PeriodicalId":10057,"journal":{"name":"Chemosensors","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135141584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Flexible Bending Sensors Fabricated with Interdigitated Electrode Structures Cross-Linked by Transition Metal Doped ZnO Nanorods 过渡金属掺杂ZnO纳米棒交联的交叉电极结构柔性弯曲传感器

3区工程技术

Chemosensors Pub Date : 2023-10-08 DOI: 10.3390/chemosensors11100529

Waqar Muhammad, Sam-Dong Kim

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Disease Diagnosis with Chemosensing, Artificial Intelligence, and Prospective Contributions of Nanoarchitectonics 用化学传感、人工智能和纳米建筑学的前瞻性贡献进行疾病诊断

3区工程技术

Chemosensors Pub Date : 2023-10-07 DOI: 10.3390/chemosensors11100528

Xuechen Shen, Katsuhiko Ariga

{"title":"Disease Diagnosis with Chemosensing, Artificial Intelligence, and Prospective Contributions of Nanoarchitectonics","authors":"Xuechen Shen, Katsuhiko Ariga","doi":"10.3390/chemosensors11100528","DOIUrl":"https://doi.org/10.3390/chemosensors11100528","url":null,"abstract":"In modern materials research, nanotechnology will play a game-changing role, with nanoarchitectonics as an overarching integrator of the field and artificial intelligence hastening its progress as a super-accelerator. We would like to discuss how this schema can be utilized in the context of specific applications, with exemplification using disease diagnosis. In this paper, we focus on early, noninvasive disease diagnosis as a target application. In particular, recent trends in chemosensing in the detection of cancer and Parkinson’s disease are reviewed. The concept has been gaining traction as dynamic volatile metabolite profiles have been increasingly associated with disease onset, making them promising diagnostic tools in early stages of disease. We also discuss advances in nanoarchitectonic chemosensors, which are theoretically ideal form factors for diagnostic chemosensing devices. Last but not least, we shine the spotlight on the rise to prominence and emergent contributions of artificial intelligence (AI) in recent works, which have elucidated a strong synergy between chemosensing and AI. The powerful combination of nanoarchitectonic chemosensors and AI could challenge our current notions of disease diagnosis. Disease diagnosis and detection of emerging viruses are important challenges facing society. The parallel development of advanced functional materials for sensing is necessary to support and enable AI methodologies in making technological leaps in applications. The material and structural formative technologies of nanoarchitectonics are critical in meeting these challenges.","PeriodicalId":10057,"journal":{"name":"Chemosensors","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135301286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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New Applications of Gas Chromatography and Gas Chromatography-Mass Spectrometry for Novel Sample Matrices in the Forensic Sciences: A Literature Review 气相色谱和气相色谱-质谱法在法医科学中新型样品基质的新应用:文献综述

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Chemosensors Pub Date : 2023-10-07 DOI: 10.3390/chemosensors11100527

Oliver Gould, Ngoc Nguyen, Kevin C. Honeychurch

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Photonics and Plasmonics: New Challenges for Optical Nanostructured Materials in Sensing 光子学和等离子体学:光学纳米结构材料在传感领域的新挑战

3区工程技术

Chemosensors Pub Date : 2023-10-07 DOI: 10.3390/chemosensors11100526

Alessandra Paladini, Paolo Prosposito, Iole Venditti

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Preparation and Optimization of Mesoporous SnO2 Quantum Dot Thin Film Gas Sensors for H2S Detection Using XGBoost Parameter Importance Analysis XGBoost用于H2S检测的介孔SnO2量子点薄膜气体传感器的制备与优化

3区工程技术

Chemosensors Pub Date : 2023-10-05 DOI: 10.3390/chemosensors11100525

Jianqiao Liu, Yujia Wang, Yue Sun, Kuanguang Zhang, Yang Ding, Ce Fu, Junsheng Wang

{"title":"Preparation and Optimization of Mesoporous SnO2 Quantum Dot Thin Film Gas Sensors for H2S Detection Using XGBoost Parameter Importance Analysis","authors":"Jianqiao Liu, Yujia Wang, Yue Sun, Kuanguang Zhang, Yang Ding, Ce Fu, Junsheng Wang","doi":"10.3390/chemosensors11100525","DOIUrl":"https://doi.org/10.3390/chemosensors11100525","url":null,"abstract":"Tin oxide (SnO2) is a traditional gas-sensitive semiconductor with excellent response to various gases. However, its sensor performances are attenuated by the utility factor during gas diffusion in the sensing body. Therefore, the rational design of microstructure of devices is attractive and necessary because it may provide a sensible and controllable microstructure, which facilitates gas diffusion and inhibits the utility factor. Herein, the mesoporous tin oxide (MPTD) quantum dot thin film for H2S gas sensors is prepared by a facile route, which creates a mesoporous microstructure for thin films by the thermal decomposition of NH4Cl. The pore size of the thin films is controlled to be 19.36–40.13 nm. The mesoporous microstructure exhibits enhanced gas-sensing properties amounting to a 30-fold increase in response and 1/3 reduction in recovery time in H2S detection at room temperature (25 °C), with a limit of detection of 0.4 ppm. To determine the importance of sensor parameters such as pore size, film thickness, and grain size, an eXtreme Gradient Boosting (XGBoost) algorithm model was developed to examine the feature importance of each parameter on the gas-sensing performance of the MPTD sensors. The visual illustration of parameter importance is revealed to facilitate the optimization of technical preparation parameters as well as the rational design of semiconductor gas sensors.","PeriodicalId":10057,"journal":{"name":"Chemosensors","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135482090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Exploring Deposition Techniques and Supramolecular Arrangement in Thin Films for Sensor Applications 用于传感器的薄膜沉积技术和超分子排列的探索

3区工程技术

Chemosensors Pub Date : 2023-10-05 DOI: 10.3390/chemosensors11100524

Celina M. Miyazaki, Cibely S. Martin, Maíza S. Ozório, Henry S. Kavazoi, Carlos J. L. Constantino, Priscila Aléssio

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A Critical Overview of Enzyme-Based Electrochemical Biosensors for L-Dopa Detection in Biological Samples 酶基电化学生物传感器在生物样品中检测左旋多巴的关键概述

3区工程技术

Chemosensors Pub Date : 2023-10-05 DOI: 10.3390/chemosensors11100523

Carmen Tesoro, Giuseppa Cembalo, Antonio Guerrieri, Giuliana Bianco, Maria Assunta Acquavia, Angela Di Di Capua, Filomena Lelario, Rosanna Ciriello

{"title":"A Critical Overview of Enzyme-Based Electrochemical Biosensors for L-Dopa Detection in Biological Samples","authors":"Carmen Tesoro, Giuseppa Cembalo, Antonio Guerrieri, Giuliana Bianco, Maria Assunta Acquavia, Angela Di Di Capua, Filomena Lelario, Rosanna Ciriello","doi":"10.3390/chemosensors11100523","DOIUrl":"https://doi.org/10.3390/chemosensors11100523","url":null,"abstract":"L-Dopa is an intermediate amino acid in the biosynthesis of endogenous catecholamines, such as dopamine. It is currently considered to be the optimal dopaminergic treatment for Parkinson’s disease, a neurodegenerative disorder affecting around 1% of the population. In an advanced stage of the disease, complications such as dyskinesia and psychosis are caused by fluctuations in plasma drug levels. Real-time monitoring of L-Dopa levels would be advantageous for properly adjusting drug dosing, thus improving therapeutic efficacy. Electrochemical methods have advantages such as easy-to-use instrumentation, fast response time, and high sensitivity, and are suitable for miniaturization, enabling the fabrication of implantable or wearable devices. This review reports on research papers of the past 20 years (2003–2023) dealing with enzyme-based biosensors for the electrochemical detection of L-Dopa in biological samples. Specifically, amperometric and voltammetric biosensors, whose output signal is a measurable current, are discussed. The approach adopted includes an initial study of the steps required to assemble the devices, i.e., electrode modification and enzyme immobilization. Then, all issues related to their analytical performance in terms of sensitivity, selectivity, and capability to analyze real samples are critically discussed. The paper aims to provide an assessment of recent developments while highlighting limitations such as poor selectivity and long-term stability, and the laborious and time-consuming fabrication protocol that needs to be addressed from the perspective of the integrated clinical management of Parkinson’s disease.","PeriodicalId":10057,"journal":{"name":"Chemosensors","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135481422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Enzyme-Free Signal Amplification Strategy via Chaperone Copolymer-Accelerated Hybridization for Highly Sensitive Detection of Adenosine 基于伴侣共聚物加速杂交的无酶信号扩增策略用于高灵敏度检测腺苷

3区工程技术

Chemosensors Pub Date : 2023-10-04 DOI: 10.3390/chemosensors11100522

Yazhen Liao, Yuxing Yang, Yang Qing, Jie Du

{"title":"Enzyme-Free Signal Amplification Strategy via Chaperone Copolymer-Accelerated Hybridization for Highly Sensitive Detection of Adenosine","authors":"Yazhen Liao, Yuxing Yang, Yang Qing, Jie Du","doi":"10.3390/chemosensors11100522","DOIUrl":"https://doi.org/10.3390/chemosensors11100522","url":null,"abstract":"Adenosine is a vital biological small molecule that regulates various physiological processes in the human body. A high expression of adenosine in cells can facilitate tumor growth. Therefore, detecting adenosine is crucial for early disease diagnosis. In this paper, we designed a fluorescent biosensor for the sensitive detection of adenosine based on the cationic comb-type copolymer PLL-g-Dex for assisted rapid hybridization of nucleic acids at room temperature. In this strategy, adenosine preferentially binds to the aptamer immobilized on the surface of magnetic nanobeads, releasing free aDNA in solution as the primer strand, which rapidly forms DNA nanowires with auxiliary probes of bDNA with the assistance of PLL-g-Dex. SYBR Green I is embedded in DNA duplexes to generate strong fluorescence. The experimental results showed that PLL-g-Dex promotes DNA hybridization reactions at room temperature to form ultra-long DNA nanowires, thus achieving signal amplification and shortening the detection time. In addition, magnetic nanobeads can reduce the background signal during the reaction. Compared with several previous studies on the fluorescence detection of adenosine, this strategy has a lower detection limit of 2.32 nM. Furthermore, this novel system exhibited a good detection performance even under complex environments, such as serum, providing some reference for the quantitative detection of adenosine in early disease diagnosis.","PeriodicalId":10057,"journal":{"name":"Chemosensors","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135644640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fiber-Optic Nanosensors for Chemical Detection 用于化学检测的光纤纳米传感器

3区工程技术

Chemosensors Pub Date : 2023-10-04 DOI: 10.3390/chemosensors11100521

Vlastimil Matějec, Ivan Kašík, Ivo Bartoň

{"title":"Fiber-Optic Nanosensors for Chemical Detection","authors":"Vlastimil Matějec, Ivan Kašík, Ivo Bartoň","doi":"10.3390/chemosensors11100521","DOIUrl":"https://doi.org/10.3390/chemosensors11100521","url":null,"abstract":"Recently, rapid progress has been achieved in the field of nanomaterial preparation and investigation. Many nanomaterials have been employed in optical chemical sensors and biosensors. This review is focused on fiber-optic nanosensors for chemical sensing based on silica and plastic optical fibers. Four types of fiber-optic chemical nanosensors, namely fiber nanotip sensors, fiber nanoarray sensors, fiber-optic surface plasmon resonance sensors, and fiber-optic nanomaterial-based sensors, are discussed in the paper. The preparation, materials, and sensing characteristics of the selected fiber-optic nanosensors are employed to show the performance of such nanosensors for chemical sensing. Examples of fiber-optic nanobiosensors are also included in the paper to document the broad sensing performance of fiber-optic nanosensors. The employment of fiber-nanotips and nanoarrays for surface-enhanced Raman scattering and nanosensors employing both electrical and optical principles and “Lab-on-fiber” sensors are also included in the paper. The paper deals with fiber-optic nanosensors based on quantum dots, nanotubes, nanorods, and nanosheets of graphene materials, MoS2, and MXenes.","PeriodicalId":10057,"journal":{"name":"Chemosensors","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135597626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0