A Novel Paper-Based Electrochemical Biosensor Based on N,O-Rich Covalent Organic Frameworks for Carbaryl Detection

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Double signal ratiometric electrochemical riboflavin sensor based on macroporous carbon/electroactive thionine-contained covalent organic framework

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Summary: An electroactive covalent-organic framework nanobelt was developed for double signal ratiometric electrochemical detection of riboflavin, providing a sensitive and accurate method for riboflavin determination.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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An Immunosensor Using Electroactive COF as Signal Probe for Electrochemical Detection of Carcinoembryonic Antigen

Huihui Liang et al.

Summary: Two-dimensional covalent-organic frameworks (COF) were used to construct a sandwich-type electrochemical immunosensor for the quantitative detection of carcinoembryonic antigen (CEA). The immunosensor exhibited a wide detection range and a low detection limit.

ANALYTICAL CHEMISTRY (2022)

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Wearable sensors made with solution-blow spinning poly(lactic acid) for non-enzymatic pesticide detection in agriculture and food safety

Rafaella T. Paschoalin et al.

Summary: This paper presents a wearable non-enzymatic electrochemical sensor for the detection of pesticides on the surface of agricultural and food samples. The sensor is low-cost and non-destructive, making it a promising tool for precision agriculture.

BIOSENSORS & BIOELECTRONICS (2022)

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Article Engineering, Environmental

CeO2-NiO/N,O-rich porous carbon derived from covalent-organic framework for enhanced Li-storage

Fengling Gu et al.

Summary: In this study, a ribbon-shaped N,O-rich covalent-organic framework (COF) was synthesized and used as a precursor to prepare CeO2-doped NiO heterostructures/N,O-rich porous carbon nanocomposites. The obtained nanocomposites exhibited excellent Li-storage performance and provided a new method for preparing CeO2-doped TMO heterostructures/NC nanocomposites.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Analytical

Biosensor Based on Covalent Organic Framework Immobilized Acetylcholinesterase for Ratiometric Detection of Carbaryl

Ying Luo et al.

Summary: A ratiometric electrochemical biosensor based on a covalent organic framework loaded with acetylcholinesterase (AChE) was developed, which showed excellent performance and could effectively detect carbaryl.

BIOSENSORS-BASEL (2022)

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Article Chemistry, Analytical

Novel Amperometric Biosensor Based on Tyrosinase/Chitosan Nanoparticles for Sensitive and Interference-Free Detection of Total Catecholamine

Valeria Gigli et al.

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BIOSENSORS-BASEL (2022)

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Article Biophysics

Benzotrithiophene-based covalent organic frameworks for real-time visual onsite assays of enrofloxacin

Li Yang et al.

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BIOSENSORS & BIOELECTRONICS (2022)

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Review Chemistry, Analytical

Nanosensor Applications in Plant Science

Daniel S. Shaw et al.

Summary: Plant science plays a crucial role in addressing global challenges, and nanosensors have emerged as important tools to monitor biological processes in plants. By utilizing nanosensors, plant signaling pathways and metabolism can be studied non-destructively and in real-time.

BIOSENSORS-BASEL (2022)

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Article Chemistry, Analytical

A Ratiometric Organic Fluorescent Nanogel Thermometer for Highly Sensitive Temperature Sensing

Chao Wang et al.

Summary: Sensing temperature is crucial for understanding physiological and pathological processes. However, highly sensitive temperature sensing with organic fluorescent nanothermometers is challenging. In this study, a ratiometric fluorescent nanogel thermometer is developed to determine bactericidal temperature. The nanogel exhibits reversible spectral changes based on its hydrophilic-to-hydrophobic transition, and its emission intensity can be correlated to external temperature. The nanogel shows promise in predicting photothermal antibacterial effects and other temperature-related biological events.

BIOSENSORS-BASEL (2022)

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Substrate preference of carbamate hydrolase CehA reveals its environmental behavior

Wankui Jiang et al.

Summary: The study found that CehA genes from different hosts are highly conserved but exhibit significant substrate preferences. Point mutations can affect the substrate specificity of CehA genes. Considering the presence of transposable elements in the flanking regions of cehA, it is speculated that hosts may have acquired the ability to hydrolyze carbamate pesticides and their substrate preferences through horizontal gene transfer and genetic copying errors.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Selective and sensitive multiplexed detection of pesticides in food samples using wearable, flexible glove-embedded non-enzymatic sensors

Paulo A. Raymundo-Pereira et al.

Summary: This study presents a low-cost, portable method for selective and sensitive detection of four classes of pesticides using glove-embedded sensors. The sensors showed high performance in discriminating pesticides in real samples, demonstrating their potential for on-site analysis of chemical threats.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Chemistry, Analytical

Smartphone-Based Dual-Channel Immunochromatographic Test Strip with Polymer Quantum Dot Labels for Simultaneous Detection of Cypermethrin and 3-Phenoxybenzoic Acid

Yuting Zhao et al.

Summary: Gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-MS (LC-MS) are commonly used methods to detect pesticides, but not suitable for on-site biomonitoring. A smartphone-based dual-channel immunochromatographic test strip (ICTS) was developed for simultaneous detection of cypermethrin and its metabolite, promising for accurate point-of-care biomonitoring of pesticide exposure. Polymer carbon dots (PCDs) were used as signal amplifier, showing excellent linear responses for detecting cypermethrin and 3-phenoxybenzoic acid. This innovative device provides a comprehensive analysis of pesticide exposure in a convenient and efficient manner.

ANALYTICAL CHEMISTRY (2021)

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Article Chemistry, Analytical

Duplex-Specific Nuclease-Triggered Fluorescence Immunoassay Based on Dual-Functionalized AuNP for Acetochlor, Metolachlor, and Propisochlor

Yonghong Zha et al.

Summary: This study introduces a double-functionalized gold nanoparticle probe for immunoassay analysis of pesticide residues with high sensitivity and low cost.

ANALYTICAL CHEMISTRY (2021)

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Article Biophysics

A novel biosensor based on multienzyme microcapsules constructed from covalent-organic framework

Huihui Liang et al.

Summary: This study utilized multienzyme microcapsules (enzymes@COF) containing glucose oxidase, horseradish peroxidase and acetylcholinesterase to construct an electrochemical biosensor with successful results. The 600 nm-sized cavity allowed for free conformation expansion of enzymes, while the COF shell provided good chemical stability and protection against external harsh environments. Additionally, the specific catalytic substrates of the enzymes could be infiltrated into the microcapsule through the pores of the COF shell.

BIOSENSORS & BIOELECTRONICS (2021)

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Article Biophysics

Background-free sensing platform for on-site detection of carbamate pesticide through upconversion nanoparticles-based hydrogel suit

Dandan Su et al.

Summary: The study presented a novel portable detection kit for carbaryl pesticide, utilizing UCNPS/PDA nanoprobe and a smartphone detector to accurately quantify carbaryl in complex tea samples. The kit demonstrated high sensitivity, portability, and strong anti-interference capability, making it a promising tool for on-site monitoring of carbaryl in real time.

BIOSENSORS & BIOELECTRONICS (2021)

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Article Engineering, Multidisciplinary

A novel hollow Co3O4@N-doped carbon nanobubble film composite for high-performance anode of lithium-ion batteries

Kaixiang Chen et al.

Summary: Co3O4 nanomaterials and N-doped carbon nanobubble film composites were successfully prepared by using COFs as templates, showing good lithium storage ability and cycle stability. The combination of CNBF and H-Co3O4 provides a new guide for the preparation of novel metal oxides and carbon composites.

COMPOSITES PART B-ENGINEERING (2021)

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Review Chemistry, Inorganic & Nuclear

Colorimetric based on-site sensing strategies for the rapid detection of pesticides in agricultural foods: New horizons, perspectives, and challenges

Reddicherla Umapathi et al.

Summary: Agricultural food crop yields have increased significantly with the use of chemical pesticides, but their excessive use has caused contamination. On-site monitoring of pesticide residues is crucial for global food and environmental safety.

COORDINATION CHEMISTRY REVIEWS (2021)

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Article Environmental Sciences

Residential exposure to carbamate, organophosphate, and pyrethroid insecticides in house dust and risk of childhood acute lymphoblastic leukemia

Jessica M. Madrigal et al.

Summary: A study evaluated the association between household carpet dust measurements of 20 insecticides and childhood acute lymphoblastic leukemia risk. The most frequently detected insecticide active ingredients were permethrin, chlorpyrifos, diazinon, and carbaryl. However, no significant associations with leukemia risk were found among these insecticides.

ENVIRONMENTAL RESEARCH (2021)

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Article Chemistry, Analytical

Two-Dimensional MnO2 Nanozyme-Mediated Homogeneous Electrochemical Detection of Organophosphate Pesticides without the Interference of H2O2 and Color

Jiahui Wu et al.

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)

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Nucleic acid-functionalized metal-organic framework for ultrasensitive immobilization-free photoelectrochemical biosensing

Xiaojuan Liu et al.

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A novel N,S-rich COF and its derived hollow N,S-doped carbon@Pd nanorods for electrochemical detection of Hg2+ and paracetamol

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Bifunctional Moderator-Powered Ratiometric Electrochemiluminescence Enzymatic Biosensors for Detecting Organophosphorus Pesticides Based on Dual-Signal Combined Nanoprobes

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A Novel Paper-Based Electrochemical Biosensor Based on N,O-Rich Covalent Organic Frameworks for Carbaryl Detection

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