Article
Chemistry, Analytical
Li Luo, Jiewei Yang, Zhi Li, Hua Xu, Lei Guo, Lili Wang, Yuxia Wang, Longlong Luo, Jing Wang, Pingping Zhang, Ruifu Yang, Weijun Kang, Jianwei Xie
Summary: A novel label-free immunosensor method was developed in this study for differentiation and quantification of ricin and abrin, showing rapid and accurate measurement in various complex matrices. The results demonstrate the potential practical application value of this method.
Article
Chemistry, Multidisciplinary
Chun-Yuan Wang, Yungang Sang, Xinyue Yang, Soniya S. Raja, Chang-Wei Cheng, Haozhi Li, Yufeng Ding, Shuoyan Sun, Hyeyoung Ahn, Chih-Kang Shih, Shangjr Gwo, Jinwei Shi
Summary: This study demonstrates a strong coupling system achieved by coupling localized surface plasmon modes. Under specific conditions, a root N scaling of Rabi splitting energy is observed, along with a confirmed giant Rabi splitting in the visible spectral range. Additionally, the coupling strength reaches the ultrastrong coupling regime in some cases, representing about 10% of the mode energy.
Review
Chemistry, Analytical
Meral Yuce, Fatma Sert, Milad Torabfam, Ayhan Parlar, Busra Gurel, Nilufer Cakir, Duygu E. Daglikoca, Mansoor A. Khan, Yilmaz capan
Summary: This article rigorously assesses the similarity between originator and biosimilar monoclonal antibodies, emphasizing the importance of charge variant analysis and its necessity for biotherapeutics. Comparative structural and functional analysis, along with techniques such as liquid chromatography-mass spectrometry and surface plasmon resonance, can effectively evaluate and validate the charge variants of monoclonal antibodies.
ANALYTICA CHIMICA ACTA
(2021)
Review
Chemistry, Multidisciplinary
Dong Liu, Can Xue
Summary: Plasmonic photocatalysis is a promising approach for solar energy transformation, which can enhance photocatalytic efficiency by optimizing the composition, spacing, and orientation of metal nanostructures. Integrating metal nanostructures with semiconductor photocatalysts can accelerate exciton generation and separation, thus improving photocatalytic efficiency.
ADVANCED MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Lin Zhu, Zhen Meng, Saizhen Hu, Tiancong Zhao, Bing Zhao
Summary: The study focuses on the plasmonic coupling between noble-metal and semiconductor nanostructures, and reveals the enhanced charge transfer and surface-enhanced Raman scattering (SERS) signals in a designed W18O49/Ag heterostructure. A new coupled-plasmon-induced charge transfer mechanism is proposed, providing insight for further studies on plasmonic effects and interfacial charge transfer in metal/semiconductor heterostructures.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Lin Zhu, Zhen Meng, Saizhen Hu, Tiancong Zhao, Bing Zhao
Summary: In this study, we for the first time observed and considered the plasmonic coupling between noble-metal and semiconductor nanostructures in metal/semiconductor heterostructures, using a W18O49/Ag heterostructure composed of Ag nanoparticles and W18O49 nanowires. The heterogeneous structure exhibited a broad and strong surface plasmon resonance (SPR) absorption in the visible wavelength range. Surface-enhanced Raman scattering (SERS) was used to investigate the interactions between metal SPR, semiconductor SPR, and the heterostructure's charge transfer process, revealing that the coupled SPR enhanced the heterostructure's internal charge transfer and SERS signals. A new coupled-plasmon-induced charge transfer mechanism was proposed to explain the improved charge transfer efficiency. This work provides insights for further studies on plasmonic effects and interfacial charge transfer in metal/semiconductor heterostructures.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Xianshuang Meng, Shanshan Sun, Hua Bai, Qiang Ma
Summary: This study presents the first online coupling of matrix solid-phase dispersion (MSPD) to direct analysis in real time mass spectrometry (DART-MS) with solid-phase analytical derivatization (SPAD) using a graphene oxide nanosheets (GONs)-coated cotton swab. It demonstrates the high-throughput analysis of regulated chemicals in consumer products. The MSPD-DART-MS methodology was optimized and validated, achieving acceptable recovery, repeatability, and sensitivity for 32 target analytes. The developed protocol streamlines the entire analytical workflow, showing promising potential for high-throughput analysis of samples with complex matrices.
ANALYTICA CHIMICA ACTA
(2023)
Article
Nanoscience & Nanotechnology
Ruei-Nan Wu, Chia-Chun Ni, Shaobo Yang, Yang Kuo, Wen-Yen Chang, Yu-Cheng Su, Sheng-Yang Kuo, C. C. Yang
Summary: This study investigates the SP coupling effects under different conditions by overlaying chemically synthesized Ag NPs on InGaN/GaN QW templates and controlling the deformation of Ag NPs. The results indicate that the geometric shape of the contact interface plays a significant role in controlling the SP coupling spectrum and strength.
ACS APPLIED NANO MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jisoo Kyoung
Summary: In this study, a direct investigation of the percolation transition is demonstrated without scanning or fitting processes using the strong coupling between slot antennas and a phase-transition material. The percolation threshold can be identified in real time by monitoring the peak position.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Biochemistry & Molecular Biology
John P. Giddens, John E. Schiel
Summary: This study describes the development and application of a strategy to generate functionally relevant analytical challenge materials with unique site-specific attributes. By using a ligand bound to the antibody during oxidative stress, unique oxidation patterns with site-specific modifications were generated. The study demonstrates rapid detection of antibody oxidation using surface plasmon resonance assay and qualitative thermal melting.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Patrick Bessel, Andre Niebur, Daniel Kranz, Jannika Lauth, Dirk Dorfs
Summary: Heterostructured Au/CuS nanocrystals exhibit localized surface plasmon resonance (LSPR) at two different wavelengths with a slight broadening compared to respective homostructured Au and CuS NCs. The resonant excitation at LSPR maxima of the heterostructured Au/CuS NCs leads to hot charge carrier relaxation associated with both LSPRs. The interaction is faster than phononic or thermal processes and involves energy or charge carrier transfer between the two materials.
Article
Chemistry, Multidisciplinary
Qiao Wang, Kaili Kuang, Huixuan Gao, Shuwen Chu, Li Yu, Wei Peng
Summary: This paper investigates the EIT-like effect achieved through the coupling of two waveguide resonances in a compound nanosystem. It demonstrates that destructive interference between two dark modes can lead to the realization of EIT-like effect. The findings suggest potential for further studies on EIT-like effect with dark-dark mode coupling in other systems.
Article
Materials Science, Multidisciplinary
Jian Zhang, Xinglai Zhang, Jing Li, Zongyi Ma, Bing Leng, Qixun Xia, Longhai Shen, Yandong Song, Zhengwei Fu, Siyu Feng, Lizhi Feng, Zitong Liu, Shavkat Yuldashev, Xin Jiang, Baodan Liu
Summary: A simple strategy of modifying gold nanoparticles (Au NPs) is proposed to improve the performance of a p-MoS2/n-ZnO heterostructure photodetector in both visible and ultraviolet light regions. The modification of Au NPs leads to a significant increase in photocurrent and photoresponse speed.
Article
Biochemistry & Molecular Biology
Guillaume Fouet, Isabelle Bally, Luca Signor, Katharina Haussermann, Nicole M. Thielens, Veronique Rossi, Christine Gaboriaud
Summary: C1q is a recognition protein of the classical complement pathway that can interact with multiple targets and initiate the complement cascade. This study reports the generation of the first recombinant form of human C1q without its recognition globular heads, retaining functional properties. By controlling the correct registering of collagen triple helices, the protein was correctly assembled and folded.
Article
Chemistry, Analytical
Edwin J. Ortiz-Riano, Diana L. Mancera-Zapata, Martha Ulloa-Ramirez, Fernando Arce-Vega, Eden Morales-Narvaez
Summary: Macromolecular association is important in biomedical sciences. This study presents a real-time biosensing platform using graphene oxide-modified microwell plates and fluorophore-labeled proteins to determine protein-binding constants. The platform proves to be comparable and consistent with existing methods in determining protein kinetics constants.
ANALYTICAL CHEMISTRY
(2022)
Review
Food Science & Technology
Xianjiang Li, Wen Ma, Zhiyong Ma, Qinghe Zhang, Hongmei Li
Summary: This review comprehensively summarizes analytical methods for the detection of Ochratoxin A in various food commodities, focusing on recent advances and discussing challenges and perspectives for future advancements and practical applications in the field.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2022)
Article
Food Science & Technology
X. Li, H. Li, W. Zhang, Q. Zhang, Z. Guo, S. Song, G. Zhao
Summary: In this study, a high-purity patulin CRM was fully characterized and assessed for the first time. The purity and uncertainty of the CRM were determined, providing assurance of accuracy for routine monitoring and risk assessment in the field of food safety.
WORLD MYCOTOXIN JOURNAL
(2022)
Article
Engineering, Environmental
Wen Ma, Bingxin Yang, Jun Li, Xianjiang Li
Summary: Four functional metal-organic frameworks were synthesized and used as adsorbents for simultaneous enrichment of nine neonicotinoids. Among them, amino-functional MIL-101-NH2 showed the best performance due to high surface area and specific interaction with analytes. A simple and efficient method was developed for trace analysis of neonicotinoids in environmental samples.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Sheng Wang, Xiuqin Li, Ming Li, Xianjiang Li, Qinghe Zhang, Hongmei Li
Summary: A simple, rapid, and sensitive method for simultaneous determination of 103 multiclass pesticides in edible oils was developed. The method involves a new strategy of sample preparation for efficient removal of matrix interferences. The results showed good recovery rates and low detection limits.
Article
Biochemical Research Methods
Xianjiang Li, Bingxin Yang, Wen Ma, Mengling Tu, Yan Zhang, Zhiyong Ma, Qinghe Zhang, Hongmei Li
Summary: In this study, a combined strategy of liquid chromatography-high resolution mass spectrometry and computer assisted elucidation (SIRIUS) was developed for the impurity elucidation in TMX material. Four impurities were identified, including two byproducts and two metabolites. This study demonstrates the potential of combining human intelligence with machine learning in impurity identification from chemicals.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Wen Ma, Bingxin Yang, Jun Li, Mingxia Liu, Xianjiang Li, Huwei Liu
Summary: In this study, functional metal-organic frameworks (MOFs) were used as matrices in laser desorption ionization mass spectrometry (LDI-MS) for rapid detection of small biomolecules. The developed LDI-MS platform showed advantages of low sample consumption, short analysis time, strong salt tolerance, and satisfactory reproducibility, with potential applications in clinical diagnosis and disease monitoring.
Article
Chemistry, Applied
Bingxin Yang, Wen Ma, Sheng Wang, Ling Shi, Xianjiang Li, Zhiyong Ma, Qinghe Zhang, Hongmei Li
Summary: A modified QuEChERS method combined with ultra performance liquid chromatography tandem mass spectrometry was developed for analyzing eight neonicotinoid insecticides in Chinese cabbage. The method showed good sensitivity, high recovery rates, and effectively eliminated matrix interference.
Article
Biochemistry & Molecular Biology
Xianjiang Li, Wen Ma, Bingxin Yang, Mengling Tu, Qinghe Zhang, Hongmei Li
Summary: In this study, a combined strategy of liquid chromatography high-resolution mass spectrometry and SIRIUS was employed to successfully identify two by-product impurities and one stereoisomer in dinotefuran material, and their fragmentation pathways and formation mechanisms were proposed.
Article
Food Science & Technology
Bingxin Yang, Sheng Wang, Wen Ma, Guanlin Li, Mengling Tu, Zhiyong Ma, Qinghe Zhang, Hongmei Li, Xianjiang Li
Summary: This research developed and validated a modified QuEChERS method combined with ultra-performance liquid chromatography-tandem mass spectrometry to determine pesticide residues in freeze-dried cabbage. The method achieved acceptable validation results with low limits of quantification and good recovery rates. The developed method was applied to real freeze-dried cabbages and detected four pesticides in the samples.
Editorial Material
Chemistry, Analytical
Xianjiang Li, Rui Weng
Review
Chemistry, Applied
Xianjiang Li, Mengling Tu, Bingxin Yang, Qinghe Zhang, Hongmei Li, Wen Ma
Summary: Chlorantraniliprole (CAP) is the first widely used anthranilic diamide insecticide that targets ryanodine receptors, but its excessive use can result in persistent contamination on treated foods and negative effects on human health. This review focuses on the analysis of CAP residues in foods using chromatographic methods, with QuEChERS being the most commonly used sample preparation strategy and liquid chromatography tandem mass spectrometry as the predominant analytical method. Furthermore, the dissipation pattern of CAP on foods is summarized, revealing its fast dissipation on plants in open-field environments. Common culinary cleaning methods are effective in removing CAP from vegetables. Finally, suggestions are made for further advancements.
Article
Biochemistry & Molecular Biology
Xianjiang Li, Wei Zhang, Xiao Li, Shukun Zhou, Mengling Tu, Yunxiao Zhu, Hongmei Li
Summary: In this study, a DNT CRM was characterized and its purity was assessed by two independent methods. The results showed that its moisture content was 0.33mg/g, inorganic impurity was 0.01mg/g, and no detectable organic solvent was found. The DNT CRM with a mass fraction of 995mg/g can be used for preparing calibrant solutions and national routine monitoring of DNT residuals in agro-products and food.
Article
Chemistry, Analytical
Xianjiang Li, Mengling Tu, Bingxin Yang, Wen Ma, Hongmei Li
Summary: Comprehensive impurity identification is essential for the safety evaluation and development of certified reference materials in the field of agrochemicals. This study developed a novel protocol for impurity profiling of THI using liquid chromatography-high resolution mass spectrometry (orbitrap) and de novo identification tool (SIRIUS). The SIRIUS, isotope, fragment tree, and Zodiac scores were utilized to rank the chemical structure candidates based on MS and MS/MS spectra. By using THI as a reference, impurity chemical structures were elucidated through shared neutral loss and fragmented ions. A total of 18 impurities were successfully identified and categorized into five groups, with 14 impurities being reported for the first time without CAS number. Two impurities were verified with standards using retention time and UV spectrum. This study demonstrates the successful application of combining de novo identification tool with human intelligence in THI impurity profiling.
MICROCHEMICAL JOURNAL
(2023)
Correction
Chemistry, Analytical
Xianjiang Li, Wei Zhang, Shukun Zhou, Xiao Li, Mengling Tu, Yunxiao Zhu, Qinghe Zhang, Hongmei Li
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Xianjiang Li, Wei Zhang, Shukun Zhou, Xiao Li, Mengling Tu, Yunxiao Zhu, Qinghe Zhang, Hongmei Li
Summary: To ensure accurate quantification and traceability of results in food samples, the use of certified reference materials (CRMs) is essential. Thiamethoxam (TMX), a second-generation neonicotinoid pesticide, was characterized and its purity value was determined using mass balance (MB) and quantitative nuclear magnetic resonance spectroscopy (qNMR). The assigned purity of TMX was 994 mg/g with a standard uncertainty of 3 mg/g (k=2).
MICROCHEMICAL JOURNAL
(2023)
