Article
Chemistry, Physical
Jianguo Wang, Songlin Yang, Yurong Cao, Yong-Hong Ye
Summary: A simple approach to fabricate large-scale optoplasmonic hybrid materials (OHMs) for high sensitivity surface-enhanced Raman spectroscopy (SERS) is proposed. The OHM consists of a metal film, a monolayer of nanoparticles (MFON), and a microsphere. The excited wavelength of the localized surface plasmon resonance in the MFON can be controlled by the size of the nanoparticles and an additional dielectric layer. Under specific conditions, Raman signals of low concentration methylene blue can be detected. Numerical simulations show that the OHM provides enhanced sensitivity compared to traditional plasmonic nanostructures.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Inorganic & Nuclear
Sujittra Srisung, Nootcharin Wasukan, Mayuso Kuno, Siriprapa Somsri, Narissara Tanjedrew
Summary: This study investigates the structure and interaction behavior of dithizone with silver nanoparticles utilizing a combination of surface-enhanced Raman scattering and density functional theory calculations. The results demonstrate a chemical interaction between dithizone adsorbed on silver nanoparticles, oriented through the sulfur and nitrogen atoms in the molecules.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Electrochemistry
Sheila Hernandez, William Cheuquepan, Martin Perez-Estebanez, Aranzazu Heras, Alvaro Colina
Summary: Raman spectroscopy is a powerful analysis technique that is greatly enhanced with the use of Surface-Enhanced Raman scattering (SERS) and Electrochemical-Surface Oxidation Enhanced Raman Scattering (EC-SOERS). The electrogeneration of silver hexacyanoferrate (II) nanocrystals has been developed as a new EC-SOERS substrate, which offers a highly sensitive Raman response. This new material can be easily monitored using spectroelectrochemistry, allowing for the detection of target molecules at nanomolar levels.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Analytical
Kohei Ide, Masahiro Kunimoto, Satoru Yoshida, Masahiro Yanagisawa, Takayuki Homma
Summary: An in situ surface-enhanced Raman spectroscopy (SERS) system was developed to detect pH changes near the electrode surface. By distributing probe molecules near the electrode, the system is able to detect and analyze pH changes through the corresponding Raman spectra.
Article
Chemistry, Medicinal
Adrian Leon-Valencia, Sarah Briceno, Carlos Reinoso, Karla Vizuete, Alexis Debut, Manuel Caetano, Gema Gonzalez
Summary: The photochemical reduction method was used to optimize the deposition of silver nanoparticles on the diatom surface for DNA biosensing. The nanocomposites were characterized using various techniques and a significant enhancement in fluorescence response was observed at 440 nm excitation wavelength. This work demonstrates a low-cost and green alternative fabrication method for fluorescent biosensors by depositing plasmonic nanoparticles on diatoms.
Article
Chemistry, Physical
Han-Kyu Choi, Sang-Min Park, Jeeyoon Jeong, Hankyul Lee, Gyu Jin Yeon, Dai-Sik Kim, Zee Hwan Kim
Summary: In this study, a simple photolithographic method was demonstrated to generate highly sensitive SERS hot spot structures at desired positions. The solid-state dewetting of an Ag thin film using a continuous-wave laser resulted in the formation of closely packed assemblies of hemispherical Ag nanoislands with substantial plasmonic-field enhancement. These hot spot structures can be utilized as position-specific chemical-sensing elements in integrated analytical devices.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Spectroscopy
Vahid Eskandari, Hossein Sahbafar, Elaheh Karooby, Masoud Hakimi Heris, Saeideh Mehmandoust, Damoun Razmjoue, Amin Hadi
Summary: This study developed silver nanoparticles-decorated filter paper substrates as surface-enhanced Raman scattering (SERS) biosensors for the detection of acyclovir (ACV). The SERS biosensors showed high sensitivity and reproducibility in detecting ACV, indicating their potential as SERS-based biosensors for trace substance detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Multidisciplinary
Dorota Puchowicz, Alicja Nejman, Irena Kaminska, Malgorzata Cieslak
Summary: This study characterizes cotton and wool fabrics modified by silver nanowires, finding that the presence of dye significantly affects the surface modification with AgNWs, with the amount of nanowires deposited on wool increasing with higher dye contents. Surface-enhanced Raman spectroscopy effect was observed on both fabrics following AgNW modification.
Article
Chemistry, Applied
Jie He, Hongxia Li, Lulu Zhang, Xiao Zhi, Xin Li, Xin Wang, Zijian Feng, Guangxia Shen, Xianting Ding
Summary: This study demonstrated an easy-prepared and low-cost surface enhanced Raman Scattering (SERS) chip for the quantitative testing of carbendazim in Chinese tea, which offers more aggregation-induced hotspots, strong 3D synergetic effects, and reduces costs without impacting performance.
Article
Chemistry, Multidisciplinary
Chiara Amicucci, Cristiano D'Andrea, Marella de Angelis, Martina Banchelli, Roberto Pini, Paolo Matteini
Summary: This paper introduces a graphene paper-supported plasmonic substrate for biodetection, which provides stable SERS signals at sub-millimolar concentration and a detection limit down to the nanogram level in the case of hemoglobin. The presence of a graphene underlayer ensures an even surface distribution of SERS hotspots and improved stability of the SERS signal.
Article
Biophysics
Lulu Liu, Dan Li, Wei Deng
Summary: The study presents a smart microgels platform capable of sensitive analysis of water and temperature with reliable surface-enhanced Raman scattering (SERS) quantification. The sensor demonstrates fast response, excellent stability, and accurate and reliable detection of water content in organic solvents and pharmaceutical products.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Graham Beaton, Yazan Bdour, Carlos Escobedo, Kevin Stamplecoskie
Summary: Silver nanoparticles (AgNPs) are widely studied for their ability to enhance Raman scattering for chemical sensing. However, the reactivity of silver poses challenges to long-term stability and quantitative reproducibility. AgNPs supported on alumina show robust stability against oxidation and can be manipulated using photochemical methods. These films can be tailored to absorb light in the visible spectrum and exhibit long-term performance as SERS sensors. Optimization parameters are explored, and the films are demonstrated as promising chemical sensors for thiram, with a detection limit of 96 ppb (m/v).
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Guo-yong Jiang, Lin Liu, Yu-qi Wan, Jing-kun Li, Fu-wei Pi
Summary: In this study, molecularly imprinted polymers (MIPs) were combined with surface-enhanced Raman scattering (SERS) to selectively and sensitively detect sulfamethazine (SMZ). The MIP@AgNPs composites showed high selectivity and excellent sensitivity as SERS substrates, with a good linear correlation (R-2 = 0.996) between the Raman signal and SMZ concentration. The method exhibited good stability and reproducibility, and was successfully applied to the analysis of lake water samples.
Article
Chemistry, Analytical
Andra-Sorina Tatar, Sanda Boca, Alexandra Falamas, Denisa Cuibus, Cosmin Farcau
Summary: In this study, high-density gold nanostar films were fabricated through self-assembly on polystyrene plates, and their use as solid plasmonic substrates for surface-enhanced optical spectroscopies was explored. The films demonstrated dual-mode surface-enhanced fluorescence and surface-enhanced Raman scattering effects under visible and NIR laser excitation. The experimental results were supported by theoretical modelling, and the potential application of these substrates in the detection of biologically relevant molecules was demonstrated.
Review
Chemistry, Analytical
Vahid Eskandari, Saeideh Mehmandoust, Zahra Farahani, Negin Poorbeik Mohammad, Amin Hadi
Summary: The special features of liposome-based drug delivery systems have proven useful in overcoming biological and pharmacodynamic challenges. Liposomes, especially those used for targeted drug delivery to pathological tissues, are considered the simplest mimic of biological cells in medicine, attracting the attention of many researchers. Surface-enhanced Raman scattering (SERS) offers nondestructive analysis and high detection sensitivity, making it ideal for single molecular detection. This study reviews recent literature on SERS-based biosensors for enhancing diagnostic and therapeutic platforms, drug delivery systems, and pharmaceutical applications, aiming to aid researchers in making more advanced and successful systems in this sensitive and important field.
VIBRATIONAL SPECTROSCOPY
(2023)
Review
Chemistry, Analytical
Claudia Campanale, Silvia Galafassi, Francesca Di Pippo, Iulian Pojar, Carmine Massarelli, Vito Felice Uricchio
Summary: Biodegradable plastic mulches (BDMs) have the potential to be an eco-friendly alternative to conventional plastic mulches in agriculture. However, their long-term impacts on soil ecosystems are still uncertain, and further research is needed. Incorporating BDMs into the soil may stimulate microbial activity, but there is also a risk of incomplete degradation and release of residual microplastics and additives.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Xuechi Yin, Sijie Liu, Deepak Kukkar, Jianlong Wang, Daohong Zhang, Ki-Hyun Kim
Summary: The lateral flow immunoassay strip is a classic and dominant tool in point-of-care detection, known for its portability and simplicity. However, current colored nanomaterials used as signal labels in LFIA have limited sensing potential, leading to the recognition of composite nanoparticles as alternatives to enhance sensitivity, signal readout diversity, anti-matrix interference, and cost-effectiveness.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Yaxin Cao, Longyi Shao, Timothy P. Jones, Wenjing Deng, M. Santosh, Pengju Liu, Cheng-Xue Yang, Yaowei Li, Daizhou Zhang, Kelly Berube
Summary: The toxicity of fibrous particles in ambient air can be higher than other types of particles. Microfibers can be organic or inorganic and their presence in the atmosphere as a result of human activity raises concerns for environmental and public health. Accurate collection, identification, and understanding of the health hazards associated with these fibers are crucial for mitigation strategies and protection of public health.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Chenchen Xie, Chen Meng, Huilin Liu, Baoguo Sun
Summary: The development of food hazard factor (FHF) detection has been moving towards on-site inspection and mobile law enforcement, calling for simple, fast, and affordable analysis technology to ensure food safety and quality. This review comprehensively summarizes the progress in research on smartphone-assisted MIP optosensors, focusing on the key issues of accuracy and sensitivity.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Guillem Peris-Pastor, Cristian Azorin, Jose Grau, Juan L. Benede, Alberto Chisvert
Summary: Green Analytical Chemistry plays an important role in every stage of method development, including sample preparation. Extraction techniques have evolved from conventional ones to a variety of miniaturized techniques in order to enhance analytical performance and ensure safety for operators and the environment. Green metric tools are used to evaluate the impact and sustainability of methods, with AGREEprep selected as the most suitable tool for evaluating published methods in various applications. The miniaturization of sample preparation strategies has led to the use of less and safer solvents, reduced waste generation and energy consumption, and improved portability and throughput.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Helena Hruskova, Roman Reminek, Frantisek Foret
Summary: This review article summarizes the progress and recent studies in offline electromigration preparative techniques between 2018 and 2023. It covers various techniques including electrophoresis, free-flow electrophoresis, isoelectric focusing, and isotachophoresis, providing theoretical aspects, trends, and solutions to existing limitations in each technique.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Mayank Garg, Nicole Pamme
Summary: This review focuses on the removal strategies of templates from molecularly imprinted polymers (MIPs) used in diagnostic biosensors. Chemical-based and electrochemical-based template extraction approaches are summarized and evaluated, providing guidance for researchers in the fields of analytical chemistry, diagnostics, and materials science for the design of MIP-based sensors.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Ivneet Banga, Anirban Paul, Nathan Kodjo Mintah Churcher, Ruchita Mahesh Kumar, Sriram Muthukumar, Shalini Prasad
Summary: Breathomics is an emerging field that focuses on analyzing exhaled breath to diagnose and monitor respiratory diseases. Electrochemical sensors, with their high sensitivity, selectivity, and low cost, play a significant role in breathomics and can be integrated into portable devices for point-of-care diagnosis.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Fabjola Bilo, Paola Cirelli, Laura Borgese
Summary: This review explores the application of X-ray fluorescence (XRF) spectrometry for elemental analysis of particulate matter (PM) in air quality monitoring. It discusses the fundamentals of XRF, experimental configurations, PM sampling devices and substrate, sample preparation strategies, qualitative and quantitative analysis, as well as the challenges faced by XRF in becoming a reliable analytical technique for PM analysis.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Hakim Faraji
Summary: The dispersive liquid-liquid microextraction (DLLME) technique is widely popular in analytical chemistry due to its high efficiency, cost-effectiveness, and simplicity. Recent advancements have addressed the limitations of DLLME, incorporating greener solvents, innovative dispersion strategies, and simplified procedures. These changes have made DLLME a more sustainable and efficient technique.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Sherin F. Hammad, Inas A. Abdallah, Alaa Bedair, Reda M. Abdelhameed, Marcello Locatelli, Fotouh R. Mansour
Summary: Carbon nanomaterials (CNMs) have excellent capabilities in terms of adsorption, enhanced oxidation, and photocatalysis, attracting widespread attention in different fields. Metal-organic frameworks (MOFs) have been widely used due to their regular network structure, porous nature, and large specific surface area. However, the instability of MOFs in aqueous solutions limits their applications in chemical sensing. Recent studies have focused on increasing the stability of MOFs in water-based matrices through chemical modifications using CNMs.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Alexandra Pape, Oliver J. Schmitz
Summary: Low temperature plasmas based on dielectric barrier discharges have emerged as a recent development in ion source research. These ion sources are applicable to heat-sensitive analytes and can ionize a wide range of compounds. Despite intensive research on important parameters such as configuration, shape, size, and materials in the past two decades, the actual ionization mechanism for all plasma gases has not been fully elucidated. This review provides an overview of atmospheric pressure ion sources, with a focus on plasma and dielectric barrier discharge based ion sources, summarizing the reactions occurring in the plasma and discussing the applications developed by different research groups.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Hai Xiong, Fengli Li, Linyu Zeng, Qiyu Lei
Summary: This review provides an overview of the emerging trends in the use of functional COF nanomaterials as biosensors for DNA/RNA detection. It summarizes the construction of DNA/RNA hybridized COF nanoprobes and their potential applications in bioanalyte detection, biosensing, biomarker imaging, and clinical biomedicine.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Bing Yan
Summary: This article summarizes the recent progress in logic gate computing and operation based on multiple luminescence response and chemical sensing for lanthanide functionalized MOF hybrid systems. The article first describes multi-color luminescence and the subsequent multiple luminescence response. The basic concept of logic gate operation and the advantages of lanthanide-based hybrid materials are then introduced. Reports on logic gate operation using pure lanthanide MOFs are provided, followed by a detailed summary of logic gate operations using lanthanide functionalized MOF hybrid materials. Additionally, the article discusses the practical luminescent detection of analytes by correlating the luminescence responsive signals and the concentration of different analytes. Finally, the article concludes with a prospect for this topic.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)
Review
Chemistry, Analytical
Brij Mohan, Gurjaspreet Singh, Rakesh Kumar Gupta, Pawan Kumar Sharma, Alexander A. Solovev, Armando J. L. Pombeiro, Peng Ren
Summary: Porous materials, particularly hydrogen-bonded organic frameworks (HOFs), have gained significant attention due to their versatile applications and unique properties such as well-defined crystalline structure and easy regeneration processes. This article provides a comprehensive overview of HOFs, including synthesis methods, hydrogen bonding motifs, recent advancements, and potential applications, offering valuable guidance for further exploration in this dynamic field.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2024)