Article
Chemistry, Analytical
Zoujun Peng, Min Zeng, Sihao Wu, Ziyu Yan, Jiahan Rui, Ping Qiu, Xiaolei Wang
Summary: A novel sulfate-loaded iron-nitrogen co-doped carbon quantum dots (SO42--CQDs) with excellent biocompatibility and cell permeability were synthesized. The SO42--CQDs showed unique fluorescence response to changes in pH and were successfully applied for the detection of glyphosate residues in chives and soil.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Xiangqiang Zhan, Yue Tang, Yuanyuan Liu, Han Tao, Yuangen Wu
Summary: A simple, stable, and rapid colorimetric method was proposed to detect pesticide residues in vegetables based on the oxidase-mimicking activity of cube-shape Ag2O. The method exhibited high sensitivity, excellent selectivity, and good recovery in various vegetables, suggesting its potential application in food pesticide detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Haimin Li, Qianyu Zhang, Xueting Luo, Zhihao Yao, Yaqin Qu, Erjing Wang, Bingbing Jiang, Zhenpeng Qiu, Cao Li, Ziqiang Xu
Summary: This study developed a ratiometric analysis method for the activity of acetylcholinesterase (AChE) based on intrinsic dual-emissive fluorescent nano-materials. The method can serve as a biomarker of neurotoxicity and has the potential for early diagnosis and prognosis.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Vijayaraj Venkatachalam, Sasikala Ganapathy, Ilaiyaraja Perumal, N. Priyadarshini, J. S. Santhosh Jeferson Stanley
Summary: In this study, pristine cadmium telluride (CdTe) and indium (In) doped CdTe quantum dots (CdTe: In) were synthesized via an aqueous colloidal route. The concentration of InCl3 precursor was increased to increase the amount of In-doping in CdTe QDs. The chloride ions from InCl3 precursor controlled the crystal growth of CdTe QDs. The performance of Gratzel type sensitized solar cells made using these CdTe QDs was strongly influenced by In-dopant precursor concentration.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Environmental Sciences
Daming Wu, Jie Lu, Ying Ma, Yuna Cao, Ting Zhang
Summary: This study revealed the toxic effects mechanism of mercaptopropionic acid (MPA)-capped CdTe quantum dots (QDs) on mitochondria, showing inhibition of cell proliferation, increased LDH release, generation of reactive oxygen species (ROS), mitochondrial damage, and inhibition of mitochondrial fission and fusion. These findings suggest significant mitochondrial dysfunction induced by MPA-capped CdTe QDs, providing insights into the regulatory mechanisms involved in mitochondrial dysfunction induced by these QDs.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Analytical
Li Ruiyi, Jia Hui, Li Nana, Xu Dan, Li Zaijun
Summary: The paper describes the synthesis of gold-graphene hybrid using histidine-functionalized graphene quantum dot as the linker between gold and graphene. The hybrid exhibits good dispersion and catalytic activity. By coupling with DNA cycling signal amplification, the hybrid is able to detect chlorpyrifos in fruits with high sensitivity and selectivity.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Vijayaraj Venkatachalam, Sasikala Ganapathy, N. Priyadarshini, Ilaiyaraja Perumal
Summary: Pristine and indium-doped cadmium telluride quantum dots were synthesized using an aqueous colloidal route. The structural and morphological details were studied using XRD and HRTEM. Increasing the concentration of indium precursor resulted in higher indium doping and smaller particle size. Chloride ions from the precursor controlled the growth of the quantum dots, while 3-MPA acted as a stabilizing agent. The size reduction of the quantum dots led to blue-shifted absorbance and photoluminescence spectra. Mixing the blue-emitting organic fluorophore POPOP with green-emitting CdTe:In and red-emitting CdTe quantum dots resulted in white light emission. The nanocomposite exhibited white light emission with good color properties. The study suggests the potential application of this nanocomposite in white LED and display technology.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Spectroscopy
Xiaoyuan Zhou, Chenchen Wang, Lina Wu, Wei Wei, Songqin Liu
Summary: It was found in this paper that OliGreen emits strong fluorescence in rigid T-Hg2+-T DNA structure compared to poly T. A label-free fluorescent sensor based on OliGreen was proposed for detecting organophosphorus pesticides by constructing T-Hg2+-T DNA structure. The sensor works by monitoring the fluorescence intensity change of OliGreen, which remains strong in the presence of OPs due to the rigid T-Hg2+-T DNA structure.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Analytical
Yiyun Zhang, Wenwen Zhang, Liming Zhang, Guangsan Song, Ningwei Wang, Wanzhen Xu, Weihong Huang
Summary: The imprinted electrochemical sensor based on multi-walled carbon nanotubes shows high efficiency in detecting BPA, with good selectivity and stability. It can detect extremely low concentrations of BPA and has the potential for trace detection in environmental water.
MICROCHEMICAL JOURNAL
(2021)
Review
Chemistry, Analytical
Mahendra R. Mahajan, Sopan N. Nangare, Pravin O. Patil
Summary: Chlorpyrifos (CPS), a widely used agricultural pesticide, has detrimental effects on human health and the environment in small amounts found in food and water. Conventional detection methods for CPS have deficiencies in sensitivity, selectivity, stability, and complexity. This review highlights the use of smart nanomaterials, such as carbon dots (CDs), graphene quantum dots (GQDs), and metal-organic frameworks (MOFs), for highly sensitive and selective sensing of CPS in water and food.
MICROCHEMICAL JOURNAL
(2023)
Review
Food Science & Technology
Sindhu Sindhu, Annamalai Manickavasagan
Summary: Pesticides are essential for increasing agricultural yield, but their overuse has led to contamination of food and water bodies and ecological disruption. Nondestructive testing (NDT) methods for pesticide residue detection are gaining interest in the food supply chain as they allow simultaneous measurement of chemical and physical characteristics without destroying the product. Further study on NDT methods is needed to address challenges in real-time implementation.
COMPREHENSIVE REVIEWS IN FOOD SCIENCE AND FOOD SAFETY
(2023)
Article
Fisheries
Shijun Chen, Yahui Zhang, Yanru Wei, Qingqi Guo, Lian Gan
Summary: The extensive and inappropriate use of organophosphorus pesticide methidathion (MD) has posed a threat to the safety of aquatic systems. A 12-day stress trial was conducted to investigate the effects of waterborne MD on Nile tilapia. The results showed that MD inhibited acetylcholinesterase (AChE) activity, induced oxidative stress, and caused damage to the liver and gills of the fish. MD also affected the expression of certain genes related to stress and detoxification processes.
AQUACULTURE REPORTS
(2023)
Article
Chemistry, Applied
Nini Liang, Xuetao Hu, Wenting Li, Yueying Wang, Ziang Guo, Xiaowei Huang, Zhihua Li, Xinai Zhang, Jiukai Zhang, Jianbo Xiao, Xiaobo Zou, Jiyong Shi
Summary: A dual-signal fluorescent sensor was developed for the detection of tetracycline in milk, showing excellent reproducibility and stability. The sensor utilized two types of quantum dots, MoS2 QDs and CdTe QDs, to achieve two fluorescence emission peaks at 433 nm and 573 nm. The sensor demonstrated strong application potential with accurate detection of TET concentration in milk samples.
Article
Chemistry, Inorganic & Nuclear
Vijayaraj Venkatachalam, Sasikala Ganapathy, Thirunavukkarasu Subramani, Ilaiyaraja Perumal
Summary: Aqueous CdTe colloidal quantum dots capped with 3-mercaptoproponic acid were successfully synthesized and characterized. Bioimaging of Artemia sp using CdTe QDs demonstrated the potential for external morphological observation in lower invertebrates.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Green & Sustainable Science & Technology
Sina Nitzko, Enno Bahrs, Achim Spiller
Summary: This study investigates consumer knowledge and attitudes regarding pesticide residues in food and drinking water, as well as the EU's regulations on maximum residue levels. The results show that consumers find pesticide residues problematic and have an ambivalent attitude towards the maximum residue levels.
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2022)
Article
Chemistry, Multidisciplinary
Jiafu Chang, Wenxin Lv, Jiahui Wu, Haiyin Li, Feng Li
Summary: A novel PEC biosensor was proposed for highly sensitive and simultaneous detection of microRNA-21 and let-7a based on SDA reaction, achieving detection limits of 6.6 fmol/L and 15.4 fmol/L, respectively. The biosensor showed acceptable results in the simultaneous analysis of miRNA-21 and let-7a in breast cancer patient's serum, suggesting potential value in the diagnosis of miRNA-related diseases.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Analytical
Wenxin Lv, Qiaoting Yang, Qian Li, Haiyin Li, Feng Li
ANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Analytical
Jiafu Chang, Wenxin Lv, Qian Li, Haiyin Li, Feng Li
ANALYTICAL CHEMISTRY
(2020)
Article
Biophysics
Haiyin Li, Haiyang Lin, Wenxin Lv, Panpan Gai, Feng Li
BIOSENSORS & BIOELECTRONICS
(2020)
Article
Biophysics
Jiahui Wu, Wenxin Lv, Qiaoting Yang, Haiyin Li, Feng Li
Summary: The study proposes a method for electrochemical detection using nanozymes with dual enzyme-like activities and ssDNA inhibitory effects, which provides a new avenue for highly sensitive homogeneous electrochemical biosensors.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Analytical
Jiahui Wu, Qiaoting Yang, Qian Li, Haiyin Li, Feng Li
Summary: In this study, manganese dioxide nanosheets were used as catalysts to develop a novel electrochemical sensor for organophosphate pesticides detection, eliminating interference from H2O2 and color. The sensor showed improved performance and lower detection limits, providing a new pathway for nanozyme-based sensors and finding more applications in food samples for OP residue determination.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Qian Li, Jiahui Wu, Qiaoting Yang, Haiyin Li, Feng Li
Summary: A new fluorescence strategy based on S-S-AuNCs was proposed for highly sensitive detection of organophosphorus pesticides without additional substances. S-S-AuNCs exhibited unique responses to thiol compounds and low pH values, and were utilized to monitor the residue, distribution, and metabolization of organophosphorus pesticides in pakchoi.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Hongjie Qi, Haiyin Li, Feng Li
Summary: This study presents a method for highly sensitive and simultaneous determination of multiple pesticides by target pesticide-triggered signal amplification. Compared to methods focusing on single pesticides, the proposed approach offers lower detection limits and allows for simultaneous evaluation of acetamiprid and profenofos residues in vegetables.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Lei Yu, Jiafu Chang, Xinyu Zhuang, Haiyin Li, Ting Hou, Feng Li
Summary: In this study, a HEC sensor based on in situ generation of electroactive substances for organophosphate pesticides detection was developed using cobalt-doped 2D nanozymes. The sensor showed high performance and potential application.
ANALYTICAL CHEMISTRY
(2022)
Article
Agriculture, Multidisciplinary
Haiyin Li, Qian Li, Suixin Zhao, Xuemei Wang, Feng Li
Summary: A dual-signal ratiometric electrochemical sensor based on aptamers was developed for the sensitive and accurate analysis of microcystin-LR, and successfully used to assess the bioaccumulated amount of the toxin in fish liver and meat.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Haiyin Li, Qiaoting Yang, Zhixin Wang, Feng Li
Summary: By designing and utilizing high-property and multifunctional emitters, immobilization-free, label-free, enzyme-free, and dual-mode determination of microRNA (miRNA) with high sensitivity and selectivity can be achieved, which is particularly urgent but remains a huge challenge.
Article
Chemistry, Analytical
Hongjie Qi, Zhixin Wang, Haiyin Li, Feng Li
Summary: A directional self-assembling avenue for in situ fabricating iridium(III)-polyimine complex-encapsulated metal-organic framework (MOF) two-dimensional electrode is developed, allowing high-performance detection of water-insoluble metal complexes in the aqueous phase. The electrode exhibits bright red electrochemiluminescence (ECL) emission with high stability, showing specific adsorption towards ssDNA. It is successfully utilized for sensitive detection of acetamiprid (Ace).
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Hai-Yin Li, Jia-Fu Chang, Wen-Xin Lyu, Feng Li
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Xin Wang, Wenxin Lv, Jiahui Wu, Haiyin Li, Feng Li
CHEMICAL COMMUNICATIONS
(2020)