Article
Chemistry, Analytical
Joao Victor Mattioni, Douglas Santana Franciscato, Luca Michael Sihn, Henrique Eisi Toma
Summary: A reaction between a ranelate ion and gold(iii) ions can quickly generate stable gold nanoparticles, which have specific color and plasmonic resonance effects that can be used for colorimetric/spectrophotometric analysis and spot test assays. Additionally, the gold nanoparticles exhibit surface enhanced Raman scattering, providing another interesting route for the analytical detection of gold ions. The simplicity of the ranelate method makes it very convenient for monitoring gold ions, particularly in metal extraction and hydrometallurgical processes.
ANALYTICAL METHODS
(2022)
Review
Chemistry, Analytical
Alexey Markin, Alexandra I. Arzhanukhina, Natalia E. Markina, Irina Yu Goryacheva
Summary: This article reviews the advantages and issues of electrochemical surface-enhanced Raman spectroscopy (EC-SERS) analysis. The ability to regulate analyte adsorption-desorption by electrode polarization provides additional control over the analytical signal and allows for fast and easy fabrication, cleaning, and regeneration of the SERS-active surface. However, EC-SERS analysis is less frequently used for routine analysis. The article collects relevant analytical reports and analyzes the limitations that restrict its practical application.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2022)
Review
Chemistry, Analytical
Rebeca Moldovan, Elizaveta Vereshchagina, Karolina Milenko, Bogdan-Cezar Iacob, Andreea Elena Bodoki, Alexandra Falamas, Nicoleta Tosa, Cristina M. Muntean, Cosmin Farca, Ede Bodoki
Summary: The discovery of surface enhanced Raman scattering (SERS) from an electrochemical (EC)-SERS experiment is a historic breakthrough that has led to the development of Raman spectroelectrochemistry (SEC) as a common characterization tool. Recent studies have shown that EC-SERS sensors have great potential to be used as miniaturized devices for point-of-need (PON) analyses, and they can revolutionize fields such as quality control, diagnosis, and environmental and food safety. Raman spectroelectrochemistry has become a promising alternative to conventional analytical methods and has attracted increasing interest from researchers.
ANALYTICA CHIMICA ACTA
(2022)
Article
Agriculture, Multidisciplinary
Eddie H. Chio, Qing X. Li
Summary: Discovering and developing a pesticide is a time-consuming and expensive process, with only a few companies able to afford it. Pesticide R&D is a high-risk, high-reward business.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Mathematics, Applied
Modjtaba Ghorbani, Mardjan Hakimi-Nezhaad
Summary: This article discusses the importance and application of topological indices in drug development research, as well as the study of topological descriptors for Sugammadex.
JOURNAL OF APPLIED MATHEMATICS AND COMPUTING
(2022)
Article
Chemistry, Multidisciplinary
Juanjuan Guo, Yang Xu, Caili Fu, Longhua Guo
Summary: Surface-enhanced Raman spectroscopy (SERS) is a promising analytical technique with sensitivity at the single-molecule level, but faces challenges in preparing large-scale, reproducible, and highly sensitive substrates. In this study, a new strategy using CTAB as a connection agent successfully fabricates an efficient Ag collide SERS substrate, demonstrating significant improvement in detection efficiency and reproducibility for applications on a large scale.
Review
Chemistry, Analytical
Angela I. Lopez-LOrente
Summary: Surface enhanced Raman spectroscopy (SERS) is a powerful technique attracting attention, where the use of different gold nanostructures can enhance the SERS response. The shape of nanostructures and nanogaps play a crucial role in SERS efficiency. The creation of flexible supports for SERS substrates is a recent trend in the field.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Meihong Ge, Pan Li, Guoliang Zhou, Siyu Chen, Wei Han, Feng Qin, Yuman Nie, Yaoxiong Wang, Miao Qin, Guangyao Huang, Shaofei Li, Yongtao Wang, Liangbao Yang, Zhongqun Tian
Summary: This method utilizes a nanocapillary pumping model to actively capture target molecules in small gaps, achieving high sensitivity detection. It can maintain an efficient and stable signal for 1-2 minutes during dynamic detection, and can also monitor material transformation processes in biological systems.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Engineering, Geological
Patrick J. Fox
Summary: The study presents a force-based limit equilibrium analysis for evaluating the stability of soil masses in different conditions, including wedge sliding. Safety factors are obtained by solving polynomial equations to ensure accuracy and reliability. Numerical examples demonstrate the method's significant application in landfill bottom liner systems and reinforced soil retaining walls.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2021)
Review
Chemistry, Analytical
Jun Ma, Mengmeng Yan, Gege Feng, Ying Ying, Ge Chen, Yong Shao, Yongxin She, Miao Wang, Jianchun Sun, Lufei Zheng, Jing Wang, A. M. Abd El-Aty
Summary: SERS technology offers ultrahigh sensitivity but is vulnerable to interference in complex matrices; by enhancing specific target recognition capabilities, MIPs can effectively address the issue of interference in complex matrices when combined with SERS technology; integrated MIP-SERS sensors hold promise for chemical detection of hazardous substances in environmental and food samples.
Article
Humanities, Multidisciplinary
Lyndsay N. Kissell, Trine K. Quady, Dario Durastanti, Samantha Springer, Jeannie Kenmotsu, Tami Lasseter Clare
Summary: Identification of red organic dyes is crucial for preserving Japanese ukiyo-e prints, particularly those by artist Suzuki Harunobu. Various analytical techniques were used to identify the red dyes and pigments used in the prints, contributing to knowledge of color palette and mixtures in eighteenth century printmaking.
Article
Engineering, Mechanical
Qian Zhang, Yihan Zhong, Zizhe Wang, Ahmad B. H. Kueh, Jianguo Cai, Jian Feng
Summary: This paper proposes a mechanical model with the prestress and deflection based on Foppl-von Karman equations, and introduces nonlinear buckling finite element analysis and experiments to determine key parameters. The proposed model shows accurate predictive ability for stress and configuration parameters of wrinkles, and a general calculation procedure for wrinkle parameters of complex membranes is established.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
S. Thirumalairajan, K. Girija
Summary: In this study, the ultrasensitive detection of neonicotinoid imidacloprid on the surface of grapes using a modified SERS substrate was demonstrated. The improved SERS substrate significantly increased the efficiency of imidacloprid sensing and exhibited good reproducibility and strong anti-interference ability. The large surface area and charge transfer behavior of Ag/WO3 nanospindles contributed to the enhanced sensing activity.
Article
Chemistry, Multidisciplinary
Juan Li, Zhenfeng Liu, Dehua Tian, Baojun Li, Lei Shao, Zaizhu Lou
Summary: This study presents a wet-chemistry approach for the fabrication of Au nanorod core-Zr-based metal-organic framework (MOF) shell nanostructures, which exhibit improved surface-enhanced Raman scattering (SERS) sensitivity and molecular enrichment capability.
Article
Chemistry, Analytical
Peilin Wang, Junyi Zhao, Zizhun Wang, Zihui Liang, Yixin Nie, Shuping Xu, Qiang Ma
Summary: This study focused on constructing a nanomaterial-patterned structure for high-resolved ECL signal modulation and designing a polarization-resolved ECL biosensor for detecting breast cancer patients. The self-assembled Au NT-based patterned structures showed significant hot spot regions, leading to directional ECL emission. The biosensor achieved good quantitative detection in a linear range of 1 fM to 1 nM and showed satisfactory results in the analysis of triple-negative breast cancer patients' serum.
ANALYTICAL CHEMISTRY
(2021)
Article
Optics
Tomoko Takahashi, Zonghua Liu, Thangavel Thevar, Nicholas Burns, Dhugal Lindsay, John Watson, Sumeet Mahajan, Sato Yukioka, Shuhei Tanaka, Yukiko Nagai, Balair Thornton
Summary: Researchers have developed a method that combines morphological and chemical information to accurately identify different particle types using optical measurement techniques that don't require sample preparation. By using a combined holographic imaging and Raman spectroscopy setup, they collected data from six different types of marine particles suspended in a large volume of seawater. Unsupervised feature learning was performed on the images and spectral data, and the learned features were combined to achieve better clustering results compared to using only image or spectral features. This method can be used for long-term monitoring of ocean particles without the need for sample collection, and it can be applied to different types of sensor measurements without significant modifications.
Article
Chemistry, Multidisciplinary
Yu-Jiao Xia-Hou, Yu Yu, Jun-Rong Zheng, Jun Yi, Jing Zhou, Ting-Xiao Qin, En-Ming You, Hai-Long Chen, Song-Yuan Ding, Li Zhang, Kai-Li Chang, Ke Chen, Martin Moskovits, Zhong-Qun Tian
Summary: This study proposes a novel method to achieve high near-field intensity in a wide range of infrared band using graphene coated manganous oxide microwires featuring hierarchical nanostructures. The near-field intensity and IR absorption of these microwires are significantly enhanced compared to microwires with smooth surfaces. The study demonstrates the potential of these microwires for vibrational sensing of small organic molecules and high photoresponse.
Article
Chemistry, Analytical
Guo-yang Shi, Hao-ping Wu, Si-heng Luo, Xin-yu Lu, Bin Ren, Qian Zhang, Wei-qi Lin, Rui-yun Chen, Ping Guo, Hua-bin Chen, Zhong-qun Tian, Gui-fang Shao, Liu Yang, Guo-kun Liu
Summary: Deep learning models are widely used in the field of 1D spectroscopy due to their self-adaption and high accuracy. However, the lack of interpretability in deep learning models has been a challenge. Current visualization methods for 2D image data cannot accurately reflect the weights in 1D spectral data, which requires the consideration of position information.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Haipei Zhao, Xuehao Xiu, Mingqiang Li, Shaobo Dai, Mingyang Gou, Leyang Tao, Xiaolei Zuo, Chunhai Fan, Zhongqun Tian, Ping Song
Summary: Dynamic interactions of enzymes are important in regulating cellular metabolism. A super DNA-enzymes molecule was constructed for controlling and detecting metabolism. The programmable SDEM shows improved detection limit and reaction rate compared to free enzymes. The SDEM can be assembled and disassembled using a hairpin structure and a displacement DNA strand for multiple cycles. An entropically driven catalytic assembly enables quick switching between different SDEMs for detecting different metabolisms on demand.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Analytical
Hossein Kashani Zadeh, Mike Hardy, Mitchell Sueker, Yicong Li, Angelis Tzouchas, Nicholas MacKinnon, Gregory Bearman, Simon A. Haughey, Alireza Akhbardeh, Insuck Baek, Chansong Hwang, Jianwei Qin, Amanda M. Tabb, Rosalee S. Hellberg, Shereen Ismail, Hassan Reza, Fartash Vasefi, Moon Kim, Kouhyar Tavakolian, Christopher T. Elliott
Summary: This study aims to develop a handheld multimode spectroscopic system for fish quality assessment that is fast, non-destructive, and easy-to-use. Data fusion of visible near infra-red (VIS-NIR) and short wave infra-red (SWIR) reflectance and fluorescence (FL) spectroscopy is applied to classify fish freshness. The study shows that multi-mode spectroscopy achieves 95% accuracy, improving the accuracies of single-mode spectroscopies by 26, 10, and 9% respectively.
Article
Chemistry, Multidisciplinary
Dai-Jian Su, Shi-Qin Xiang, Shu-Ting Gao, Yimin Jiang, Xiaohong Liu, Wei Zhang, Liu-Bin Zhao, Zhong-Qun Tian
Summary: In this study, the catalytic selectivity and product distribution of CO2 reduction on various metal surfaces were comprehensively investigated. The influence of reaction kinetics was analyzed based on the variation of reaction driving force and reaction resistance. External factors such as electrode potential and solution pH were found to further affect the CO2RR product distributions. A potential-mediated mechanism was discovered to determine the competing two-electron reduction products of CO2. Detailed kinetic simulations were conducted to identify the catalytic selectivity of different products. This kinetic study not only explains experimental results but also provides a fast screening method for catalysts.
Article
Chemistry, Multidisciplinary
Sara Rocchetti, Alexander Ohmann, Rohit Chikkaraddy, Gyeongwon Kang, Ulrich F. Keyser, Jeremy J. Baumberg
Summary: Developing highly enhanced plasmonic nanocavities allows direct observation of light-matter interactions at the nanoscale. With DNA origami, precise nanopositioning of single-quantum emitters in ultranarrow plasmonic gaps enables detailed study of their modified light emission. By developing nanoparticle-on-mirror constructs with DNA nanostructures as reliable and customizable spacers for nanoparticle binding, it is revealed that the traditional understanding of Purcell-enhanced molecular dye emission is misleading, and the enhanced dipolar dye polarizability greatly amplifies optical forces acting on the facet Au atoms, causing their rapid destabilization. Different dyes exhibit emission spectra dominated by inelastic (Raman) scattering rather than fluorescence, challenging the conventional theories in the field of quantum optics using plasmonics.
Article
Optics
Rohit Chikkaraddy, Rakesh Arul, Lukas A. Jakob, Jeremy J. Baumberg
Summary: This study proposes a method for detecting molecular vibrations in the mid-infrared range at room temperature. By assembling molecules into a plasmonic nanocavity resonant at both mid-infrared and visible wavelengths, and optically pumping them below the electronic absorption band, successful conversion of mid-infrared light and observation of enhanced visible luminescence were achieved.
Article
Chemistry, Multidisciplinary
Aoife Gregg, Michael De Volder, Jeremy J. Baumberg
Summary: Light-responsive microactuators composed of carbon nanotube and hydrogel composites exhibit efficient radiative heating capture and fast response time. The kinetics of these microactuators are limited by polymer diffusion. Additionally, these actuators have potential applications as microswimmers.
Article
Chemistry, Multidisciplinary
Marika Niihori, Tamas Foeldes, Charlie A. Readman, Rakesh Arul, David-Benjamin Grys, Bart de Nijs, Edina Rosta, Jeremy J. Baumberg
Summary: This study demonstrates the sensing of neurotransmitters at nm concentrations using self-assembled monolayers of plasmonic Au nanoparticles. By integrating Fe(III) sensitizers into nanogaps, enhanced surface-enhanced Raman spectroscopy is achieved for dopamine sensing. The transparent glass substrates allow for repeated sensing in different analytes.
Editorial Material
Engineering, Environmental
Peter Vikesland
ACS ENVIRONMENTAL AU
(2023)
Article
Chemistry, Analytical
Samantha M. M. McCabe, Gregory Q. Q. Wallace, Sian Sloan-Dennison, William J. J. Tipping, Neil C. C. Shand, Duncan Graham, Marie Boyd, Karen Faulds
Summary: This study investigates the uptake and distribution of silica coated gold nanoparticles (AuNP-SHINs) in three-dimensional multicellular tumour spheroids derived from glioblastoma cells. The results show that the localization of nanoparticles within the spheroids is influenced by factors such as size, quiescence, and hypoxia.
Article
Chemistry, Multidisciplinary
Aristea Anna Leventi, Henry J. Braddick, Kharmen Billimoria, Gregory Q. Wallace, Heidi Goenaga-Infante, Nicholas C. O. Tomkinson, Karen Faulds, Duncan Graham
Summary: This article reports the synthesis of nanocarriers for delivering the antitumor drug cisplatin. Multimodal imaging techniques, including surface enhanced Raman scattering and laser ablation inductively coupled plasma time of flight mass spectrometry, were used to visualize the intracellular uptake of both the nanocarrier and drug.
CHEMICAL COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Hong Cai, Ruiyong Chen, Mounib Bahri, Cara J. Hawkins, Manel Sonni, Luke M. Daniels, Jungwoo Lim, Jae A. Evans, Marco Zanella, Leanne A. H. Jones, Troy D. Manning, Tim D. Veal, Laurence J. Hardwick, Matthew S. Dyer, Nigel D. Browning, John B. Claridge, Matthew J. Rosseinsky
Summary: We successfully synthesized a new spinel-like oxyfluoride Li1.25Ni0.625Mn1.125O3F with significant cation disorder. Its crystal structure was confirmed by combined refinement of X-ray and neutron diffraction data. Li1.25Ni0.625Mn1.125O3F showed capacities of 225mAh/g and 285mAh/g at 25 and 40 degrees C, respectively, by intercalation of additional Li+ into the lattice. Compared to previously reported lithium transition metal disordered rocksalt or spinel-like oxyfluorides, Li1.25Ni0.625Mn1.125O3F exhibited significantly improved cycling stability with high structural integrity.
ACS MATERIALS LETTERS
(2023)
Article
Multidisciplinary Sciences
Chao Zhan, Jun Yi, Shu Hu, Xia-Guang Zhang, De-Yin Wu, Zhong-Qun Tian
Summary: Plasmon-mediated chemical reactions (PMCRs) utilize nanostructure-based surface plasmons to drive chemical reactions. This review outlines the primary considerations and techniques for designing and constructing plasmonic catalysts, as well as the typical methods used to characterize these catalysts and their reaction mechanisms.
NATURE REVIEWS METHODS PRIMERS
(2023)
