Article
Chemistry, Physical
Minji Son, Suhyeon Kim, Younki Lee, Jiwon Bang
Summary: Near infrared-emitting type-II In(Zn)P/ZnTe (core/shell) quantum dots have been developed with tunable emission range by adjusting core diameter and shell thickness. These heavy-metal-free, water-soluble quantum dots show potential for widespread applications in biomedicine and energy fields.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Jiakuan Zhang, Chuyue Li, Jiongzhao Li, Xiaogang Peng
Summary: Size- and shape-controlled CdSe/ZnSe core/shell and CdSe/ZnSe/ZnS core/shell/shell nanocrystals with zinc-blende structure are synthesized. The ligand strain between the inorganic crystal surface and organic ligands plays a key role in ZnSe epitaxy. The lattice strain between the CdSe and ZnSe affects the photoluminescence of CdSe/ZnSe/ZnS core/shell/shell QDs.
CHEMISTRY OF MATERIALS
(2023)
Article
Spectroscopy
Qiuju Chen, Zizhi Huang, Qiong Wang, Yunchu Hu, Hao Tang, Ruizhi Wen, Wenlei Wang
Summary: A novel Type-I Mn: ZnSe@ZnS core-shell quantum dots (QDs) were synthesized using low-cost inorganic salts and natural biomacromolecule. The photoinduced fluorescence enhancement led to a significant increase in photoluminescence intensity and quantum yield, making them potential candidates for white LEDs and biological labels. The structure and morphology of the Mn: ZnSe@ZnS core-shell QDs were confirmed by various analytical techniques.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Nanoscience & Nanotechnology
Yanbing Lv, Yucheng Yuan, Ning Hu, Na Jin, Dangdang Xu, Ruili Wu, Huaibin Shen, Ou Chen, Lin Song Li
Summary: This study presents a synthesis method for ultra-thick shell quantum dots and their application in C-reactive protein detection, achieving nearly a 3-fold enhancement in detection sensitivity and a 2-fold increase in shelf life. The performance improvements in protein detection are attributed to the use of core/shell quantum dots with high particle stability, high PL QYs, and a large surface area conducive to surface antibody coupling.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Analytical
Farzad Farahmandzadeh, Mehdi Molaei, Hassan Alehdaghi, Masoud Karimipour, Alireza Shamsi
Summary: In this study, CdTe/ZnSe core/shell quantum dots were synthesized through a photochemical method, and their optical and structural properties under γ irradiation were systematically investigated. The results showed a regular red shift behavior in the photoluminescence peak and absorption edge of CdTe/ZnSe QDs with increasing γ irradiation dose. However, the crystalline structure of CdTe/ZnSe core/shell QDs remained unchanged after γ irradiation. It was also found that the concentration and shell thickness were important factors affecting the sensitivity of CdTe/ZnSe QDs to γ irradiation.
Article
Nanoscience & Nanotechnology
Piotr Wojnar, Jakub Plachta, Anna Reszka, Jonas Lahnemann, Anna Kaleta, Slawomir Kret, Piotr Baranowski, Maciej Wojcik, Bogdan J. Kowalski, Lech T. Baczewski, Grzegorz Karczewski, Tomasz Wojtowicz
Summary: ZnTe/CdSe/(Zn, Mg)Te core/double-shell nanowires grown by molecular beam epitaxy exhibit optical emission in the near infrared, attributed to spatially indirect exciton recombination at the ZnTe/CdSe type II interface. The emission energy shows a significant blue-shift with increasing excitation fluence due to electron-hole separation at the interface. The near infrared emission energy depends on the average CdSe shell thickness and average Mg concentration within the (Zn, Mg)Te shell.
Article
Optics
Zhanmeng Zhang, Tiehao Zhang, Jing Wang, Jianjun Han, Luyao Li
Summary: Cu and Mn co-doped ZnSe quantum dots (QDs) glass with polychromatic and tunable luminescence was prepared. The emission from ZnSe QDs was replaced by the broadband emission from Cu2+/Mn2+ ions in Cu/Mn: ZnSe QDs glass, indicating effective energy transfer. The emission spectra of Cu/Mn: ZnSe QDs glass changed from green to orange light with increasing heating temperature, corresponding to the characteristic luminescence wavelengths of Cu2+ and Mn2+ ions. Cu2+ promoted the phase transformation of ZnSe QDs, while Mn2+ did not show such influence.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Physical
Rui Wang, Xin Tong, Zhihang Long, Ali Imran Charm, Hongyang Zhao, Xin Li, Mengke Cai, Yimin You, Xuping Sun, Zhiming Wang
Summary: Colloidal core/shell quantum dots (QDs) with environmentally friendly features and controllable optoelectronic properties have great potential in emerging solar technologies. In this research, CuInSe (CISe)/ZnSe core/shell QDs were rationally designed and tailored by Mn doping and stoichiometric optimization. The findings indicate that Mn doping in In-rich CISe/ZnSe core/shell QDs can effectively engineer the charge kinetics inside the QDs, enabling efficient charge transfer and reducing recombination. The optimized Mn-doped In-rich CISe/ZnSe core/shell QDs exhibited significantly improved photocurrent density in a solar-driven photoelectrochemical device compared to the pristine CISe/ZnSe core/shell QDs. Transition metal doping in green nonstoichiometric core/shell QDs could provide a new strategy for achieving high-efficiency solar energy conversion applications.
Article
Chemistry, Physical
Jiajia Ning, Yuan Xiong, Stephen Kershaw, Andrey L. Rogach
Summary: The most efficient way to improve the stability and optical properties of nanocrystals is to grow shell around their cores. Different growth modes of the ZnS shell on ZnSe nanorods were observed depending on the crystal structure of the ZnSe core, leading to differences in photoluminescence quantum yield.
CHEMISTRY OF MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Worasak Sukkabot
Summary: This article investigates the effects of applied magnetic fields on Mn-doped ZnSe/CdSe core/shell nanocrystals and finds that their electronic, optical, and magnetic properties are highly sensitive to the magnetic fields and shell thickness. The optical properties are enhanced in high magnetic fields.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Shijia Zeng, Zhenbo Li, Wenjiang Tan, Jinhai Si, Yuren Li, Xun Hou
Summary: This study compares the ultrafast carrier dynamics in InP/ZnSe/ZnS core/shell/shell quantum dots (CSS-QDs) and InP/ZnS core/shell QDs (CS-QDs), revealing the impact of the ZnSe midshell on carrier dynamics. The results show that the ZnSe midshell enhances electron delocalization, prolongs the in-band relaxation time of electrons and holes, and reduces defect emissions. Additionally, the ZnSe midshell leads to an increased density of higher-energy hole states, which may decrease the probability of Auger recombination.
Article
Chemistry, Analytical
Zhen-Chi Chen, Han-Bin Xu, Hua-Ying Chen, Shi-Cheng Zhu, Wen-Fei Huang, Yue He, Mahmoud Elsayed Hafez, Ruo-Can Qian, Da-Wei Li
Summary: A reversible surface-enhanced Raman scattering (SERS) nanosensor based on covalent organic frameworks (COFs) was developed for dynamic monitoring of intracellular redox processes. The nanosensor was fabricated by modifying the redox-responsive Raman reporter molecule 2-Mercaptobenzoquione (2-MBQ) on the surface of gold nanoparticles (AuNPs) and coating it with a COFs shell. This nanosensor exhibited great stability and anti-interference capability, enabling reliable visualization of the dynamics of intracellular redox species.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Paul Cavanaugh, Ilan Jen-La Plante, Christian Ippen, Ruiqing Ma, David F. Kelley, Anne Myers Kelley
Summary: Resonance Raman spectra and absolute cross sections of InP/ZnSe/ZnS core/shell/shell nanocrystals were obtained at different excitation wavelengths, revealing differences in phonon features attributed to various stoichiometries of the structures. The presence of excess indium in the ZnSe shell was found to influence the Raman intensities and frequency distributions, supporting previous assignments of hole trapping at indium defects in the shell.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Letter
Physics, Multidisciplinary
A. Cherni, N. Yahyaoui, N. Zeiri, P. Baser, M. Said, S. Saadaoui
Summary: The effects of dot radius and electric field strength on binding energy, Stark-shift, and photoionization-cross section of donor impurity confined in CSSQDs capped in different dielectric matrices were theoretically investigated using the variational approach. The results showed that the presence of the dielectric matrix and the modification of the core radius highly influenced the binding energy and the Stark shift. Increasing electric field intensity and core radius led to a decrease in the binding energy and an improvement in the magnitude of the photoionization-cross section, accompanied by a redshift of their resonance peaks.
Article
Chemistry, Multidisciplinary
Kyu Seung Lee, Jaeho Shim, Joo Song Lee, Jaehyeon Lee, Hi Gyu Moon, Young Jae Park, Donghee Park, Dong Ick Son
Summary: This study demonstrates the sensing properties and adsorption mechanism of monolayer graphene and multilayer graphene encapsulated ZnO quantum dots for NO2 gas. The results show that the gas response value and surface potential change of multilayer graphene encapsulated ZnO quantum dots are significantly higher than those of monolayer graphene and ZnO quantum dots. The proposed adsorption mechanism provides insights for improving the detection behavior and enhancing the accuracy of gas sensor analysis.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Engineering, Civil
Qiang Ma, Jia Mou, Henglin Xiao, Zhizao Bao
Summary: JTES pile composite foundation is a new method for treating soft soil ground. Through vertical static load comparison tests, the load-settlement characteristics and load-transfer mechanism of JTES pile composite foundation were studied. The results showed that JTES pile composite foundation has higher ultimate bearing capacity and smaller settlement compared to other foundations.
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2023)
Article
Engineering, Civil
Lihua Li, Langling Qin, Henglin Xiao, Zhi Hu, Guofang Xu, Qiang Ma
Summary: This study investigated the effect of particle sizes and sand contents on the mechanical behavior of recycled construction and demolition (C&D) materials. The results showed that adding an appropriate amount of sand can improve the particle gradation and maximum dry density of the materials, as well as increase the overall strength of the specimens.
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2023)
Article
Chemistry, Analytical
Fangfang Lu, Yajun Zheng, Yuan Zhang, Qiang Ma, Zhiping Zhang
Summary: Portable sampling of target analytes in complex biofluid samples using paper-in-tip spray ionization enables efficient and high sensitivity mass spectrometric analysis of therapeutic drugs and proteins. This technique allows for a long and stable spray duration with minimal spray solvent, enabling quick analysis of complex samples with high quantitation precision at picogram-per-milliliter levels.
ANALYTICAL METHODS
(2022)
Article
Cell & Tissue Engineering
Xin Zhou, Yufeng Lu, Fangqi Zhao, Ji Dong, Wenji Ma, Suijuan Zhong, Mengdi Wang, Bosong Wang, Yuqing Zhao, Yingchao Shi, Qiang Ma, Tian Lu, Jun Zhang, Xiaoqun Wang, Qian Wu
Summary: This study reveals the cell-type and spatiotemporal characteristics of human hypothalamus development and finds that different cell fates are produced sequentially with spatial developmental asynchrony. Human hypothalamic gliogenesis occurs at an earlier stage compared to mice and shows different transcription profiles. Early oligodendrocyte cells in humans interact with neuronal cells through Wnt, Hippo, and integrin signals to regulate neuronal maturation.
Article
Polymer Science
Qiang Ma, Yijun Zhang, Valentin Launay, Marie Le Dot, Shaohui Liu, Jacques Lalevee
Summary: Research on MPCs has made significant progress in the past 20 years, but there are still challenges in its theory and preparation. This study introduced an efficient photothermal synergistic approach to overcome the limitations of light reaction alone and successfully fabricated iron filler-based composites. The cured composites showed improved mechanical properties and achieved successful 3D printing with good spatial resolution.
EUROPEAN POLYMER JOURNAL
(2022)
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
Biochemical Research Methods
Guoping Li, Jing Chen, Qing Yang, Xuexin Yang, Penglong Wang, Haimin Lei, Ma Mi, Qiang Ma
Summary: A method was developed to analyze the chemical constituents of pomegranate seeds, which led to the identification of 59 compounds. These findings provide a reference for the pharmacodynamic substance research of pomegranate seeds and reveal their potential nutritional and therapeutic applications in the future.
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
(2023)
Article
Biochemical Research Methods
Yuhan Shang, Xianshuang Meng, Juan Liu, Naining Song, Hongyan Zheng, Chao Han, Qiang Ma
Summary: Mass spectrometry (MS) is widely utilized in cosmetic analysis for various purposes including ingredient screening, quality control, risk monitoring, authenticity verification, and efficacy evaluation. This article provides an overview of the role of MS in cosmetic analysis over the past two decades, highlighting the sample preparation methods, ionization techniques, and mass analyzer types commonly employed in this field. Additionally, the article briefly discusses the future development of MS for cosmetic analysis.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Biochemical Research Methods
Ming Li, Chenrui Zhan, Yueguang Lv, Jiwen Chen, Yutian Wang, Sixian Lu, Yingqi Wan, Qiang Ma
Summary: This study investigates the processing effects of ensemble empirical mode decomposition (EEMD) feature enhancement methods on the determination coefficient (R-2) and relative standard deviation (RSD) of caffeine mass spectrometry signals. The results show that the EEMD method is better than the wavelet analysis method and significantly improves the determination coefficient and RSD of the sample curve, improving the accuracy and stability of the data.
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
(2023)
Article
Biochemical Research Methods
Xiangyu Guo, Junfang Li, Hua Bai, Qiang Ma
Summary: In this study, a rapid on-site analytical workflow was developed for the detection of polycyclic aromatic hydrocarbons and perfluorinated compounds using multiwalled carbon nanotube-modified paper spray ionization coupled with a miniature ion trap mass spectrometer. Critical parameters regarding PSI and miniature mass spectrometry analysis were optimized. The developed method showed a short analysis duration, sufficient linearity, acceptable recovery rates, and reasonable sensitivity, making it a promising solution for the rapid on-site detection of emerging persistent organic pollutants.
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
(2023)
Article
Chemistry, Physical
Qiang Ma, Sha Fu, An-Jun Wu, Qi Deng, Wei-Dong Li, Dan Yue, Bing Zhang, Xiong-Wei Wu, Zhen-Ling Wang, Yu-Guo Guo
Summary: Bidirectionally functional polymer electrolytes (BDFPE) were designed to simultaneously handle the interface issues faced by anodes and cathodes. By constructing the BDFPE, a smooth and dendrite-free lithium deposition is enabled for Li||Li symmetry cells, and Li||LiNi0.6Co0.2Mn0.2O2 batteries demonstrate favorable cycling and rate capability with a stable CEI layer. The study provides a promising design strategy for high energy density lithium metal batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Biochemical Research Methods
Tiantian Zhang, Xiwen Ye, Xin Luo, Zengyuan Niu, Huiyong Wang, Qiang Ma
Summary: The study developed a solvent-free pyrolysis gas chromatography-mass spectrometry method to screen for multiple restricted additives in polymer materials. The method successfully screened 33 restricted substances simultaneously, and verified the sensitivity, linear range, and recovery of the method. It also validated the method using various reference materials and applied it to analyze plastic products and recycled plastic samples. The method provided a comprehensive and thorough inspection without sample pretreatment, offering numerous advantages over traditional methods.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Zhijin Yang, Binbin Lin, Xuliang Huang, Bing Shi, Qiang Ma, Chao Han, Yan Shen
Summary: This study uses GC-APCI-MS/MS to detect and identify 8 herbicide residues in plant-based foodstuffs. APCI, as a soft ionization technique, enhances sensitivity and selectivity by generating more molecular ions and/or protonated molecules. The method has a range of 0.5 to 50 ng/mL for calibration curves, with recoveries in the range of 76.3-108.5%. The limit of quantification for all samples is 1.0 μg/kg. The results demonstrate the potential of GC-APCI-MS/MS in routine detection and identification of herbicide residues in plant-based foodstuffs.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Yueguang Lv, Yuhan Shang, Linsen Li, Ying Zhang, Qiang Ma
Summary: An integrated experimental protocol combining in-capillary aptamer-functionalized solid-phase microextraction (SPME), extraction nanoelectrospray ionization (nanoESI), and miniature MS analysis was developed for direct mass spectrometry (MS) analysis of complex samples. The method was successfully applied to analyze caffeine in electronic cigarette liquid and beverage samples, and demonstrated satisfactory analytical performance with high recoveries and low relative standard deviations.
Article
Agriculture, Multidisciplinary
Meng Chen, Ming Li, Wenxi Zhang, Hua Bai, Qiang Ma
Summary: Green analytical chemistry (GAC) is a rapidly growing research field that aims to develop novel analytical approaches with minimal consumption of hazardous reagents and solvents. This study reports on a green analytical method using natural deep eutectic solvents (NADESs) and temperature-mediated strategies for efficient sample pretreatment and mass spectrometry analysis.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Chemistry, Analytical
Qian Wu, Li Tian, Xiangyu Shan, Huiling Li, Chao Li, Juan Lu
Summary: A novel ECL sensor was developed by modifying Fe3CuO4-Ru(bpy)3+ and GO-CdS@ZnS on the electrode for the detection of permethrin. The sensor exhibited high sensitivity and a wide detection range.
Article
Chemistry, Analytical
Tingting Gong, Lei Liao, Bingying Jiang, Ruo Yuan, Yun Xiang
Summary: In this study, a fluorescent biosensing system for high sensitivity detection of MT was established using a new Ag+-stabilized DNA triplex probe (Ag+-SDTP) combined with catalytic hairpin assembly (CHA) and CRISPR/Cas12a signal enhancements. The sensing method is able to selectively detect MT from other non-specific molecules and can achieve low level detection of MT in diluted human serums, demonstrating its potential for monitoring disease-specific MT biomarker at trace levels.
Article
Chemistry, Analytical
Estrella Sanz Rodriguez, Kyra Wood, Paul R. Haddad, Brett Paull
Summary: This study presents a simple, rapid, and reliable method for determining boron in aqueous solutions using suppressed ion chromatography coupled to electrospray ionisation-triple quadrupole mass spectrometry. The method achieved a low limit of detection and demonstrated excellent analytical performance.
Article
Chemistry, Analytical
Aline Cournut, Paul Moustiez, Yannick Coffinier, Christine Enjalbal, Claudia Bich
Summary: Alzheimer's disease is a major cause of senile dementia and is characterized by the aggregation of neurofibrillary tangles and amyloid plaques in the brain. The A beta 1-42 peptide is considered the primary cause of neurotoxicity due to its insolubility and subsequent aggregation. A beta 1-42 and A beta 1-40 have been identified as relevant biomarkers for AD diagnosis, and SurfaceAssisted Laser Desorption/Ionization Mass Spectrometry (SALDI-MS) was used to monitor the A beta 1-42/A beta 1-40 ratio without prior sample treatment.
Article
Chemistry, Analytical
Dotse Selali Chormey, Buse Tugba Zaman, Tulay Borahan Kustanto, Sezin Erarpat Bodur, Suleyman Bodur, Elif Ozturk Er, Sezgin Bakirdere
Summary: This review provides an overview of the harmful effects of endocrine disrupting chemicals (EDCs) on human health and introduces the methods for analyzing EDCs. Recent research has focused on using green chemicals, such as deep eutectic solvents (DESs), for microextraction to ensure environmental safety.
Article
Chemistry, Analytical
Yan Zhang, Renfeng Xu, Jingjing Wu, Zhenghong Zhang, Yuhuang Wang, Hongqin Yang, Sheng Zhang
Summary: This study visualized the pore-like structures in prostate cancer cell membranes after treatment with the anticancer drug paclitaxel, demonstrating its mechanism of action related to oxidative damage.
Article
Chemistry, Analytical
Chihong Ma, Qin Zhou, Jinjin Shi, Hua Gao, Di Huang, Huimin Xue, Han Wang, Zhenzhong Zhang, Sen Yang, Junli Zhang, Kaixiang Zhang
Summary: We developed a CRISPR-empowered electrochemical biosensor, named PER-E-CRISPR, for amplification-free and sensitive detection of miR-21. The biosensor combines the advantages of CRISPR/Cas13a and primer exchange reaction (PER) for target amplification. Under optimized conditions, the PER-E-CRISPR assay exhibits a linear range from 10-13 to 10-7 M and a limit of detection of 30.2 fM. The biosensor shows excellent performance in actual plasma, indicating promising prospects for miRNA detection in molecular diagnosis.
Article
Chemistry, Analytical
Gang Liang, Jie Zhao, Yufei Gao, Tao Xie, Jianhui Zhen, Ligang Pan, Wenwen Gong
Summary: Molecular docking (MD) analysis is widely used for studying the interaction between aptamers and small molecules. This study established steady-state aptamers of tertiary structures (SATS) using specific aptamers of tetracycline antibiotics as docking models. Molecular docking results revealed multiple binding sites in the SATS of aptamers, with significant variations in binding free energy (BFE) and docking score (DS). The study also proposed a method for MD analysis based on SATS, providing insights into binding mode and predicting binding sites.
Article
Chemistry, Analytical
Yixuan Xu, Changchang Teng, Huiping Dang, Dalong Yin, Lifeng Yan
Summary: Stable organic radical molecules with high NIR fluorescence quantum efficiency have been synthesized and encapsulated into nanoparticles, which show great potential for both photodynamic therapy (PDT) and photothermal therapy (PTT) of tumors.
Article
Chemistry, Analytical
Yu Su, Dandan Yang, Yanjie Wang, Jie Ding, Lan Ding, Daqian Song
Summary: In this study, a highly selective molecularly imprinted polymer Cu-MIPs@CS was designed and synthesized for bisphenol A (BPA). Cu-MIPs@CS showed significantly enhanced imprinting factor and selective factor towards BPA compared to MIPs@CS. It also exhibited superior discrimination ability between BPA and its structural analogue. Additionally, Cu-MIPs@CS were successfully applied as a solid phase extraction adsorbent for the determination of BPA in drinking water samples.
Article
Chemistry, Analytical
Yi Qiao, Qiongdan Zhang, Yukun He, Tianguang Cheng, Jing Tu
Summary: Single cell heterogeneity plays an important role in many biological phenomena, and distinguishing cells with specific mutations is beneficial for clinical diagnosis and drug screening. This study introduces a gel plate platform that can distinguish cell types based on their phenotypes, with low equipment requirement. The gel platform has potential in point-of-care circumstances and single-cell stimulation responses that prioritize efficiency and simplicity.
Article
Chemistry, Analytical
Chengke Wang, Shuyang Sun, Ping Wang, Huawei Zhao, Wenling Li
Summary: The food safety of aquatic products is a global concern. Nanotechnology-based analyses have advantages in the detection of bacteria, metal ions, and small molecule contaminants. This review summarizes the recent advances in biosensing strategies for aquatic products and highlights the application of nanomaterials, lateral flow-based biosensors, surface-enhanced Raman scattering, microfluidic chips, and molecular imprinting technologies.
Article
Chemistry, Analytical
Liping Zhu, Zeng Tang, Xuemei Zhang, Li Zhu, Tian Meng, Linying Yu, Ting Xiao, Shasha Lu, Xiaoli Xiong, Xiurong Yang
Summary: A sensitive off-on electrochemiluminescence DNA sensor was developed using Exo III-assisted cascade amplification system. The sensor achieved high selectivity and ultra-high sensitivity in detecting target DNA by utilizing ECL and SPR effects. This study provides a new perspective for designing highly sensitive and programmable ECL biosensors.
Article
Chemistry, Analytical
Tong Li, Mengxu Sun, Suping Xia, Ting Huang, Rong-Tian Li, Chunrong Li, Zong Dai, Jin-Xiang Chen, Jun Chen, Nuan Jia
Summary: Here, we developed a binary system based on DNA tetrahedron and fluorogenic RNA aptamers for highly specific and label-free mRNA imaging in living cells. This system achieved high specificity label-free detection of nucleic acids with a detection limit of 1.34 nM. The method has potential applications in early disease diagnosis and new drug development.
Article
Chemistry, Analytical
Yao Zhao, Shu Zhang, Wang Yao, Yuxuan Zhu, Jing Qian, Juan Yang, Nianjun Yang
Summary: A new hierarchical nanostructured composite with high conductivity and catalytic activity is synthesized. The sensor exhibits significant catalytic effect and high sensitivity for monitoring the environmental endocrine disruptor bisphenol A (BPA).