2022
DOI: 10.1021/acsanm.2c03005
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Graphene Quantum Dot Bearing Liquid Droplets for Ultrasensitive Fluorescence-Based Detection of Nitroaromatics

Abstract: Sensing and detecting nitroaromatics (NAs) are essential for environmental, health, and safety reasons. Graphene quantum dots (GQDs) respond to the presence of NAs by a well-understood fluorescence quenching mechanism. However, despite the relative simplicity of fluorescence-based sensing, the limit of detection (LoD) can compare unfavorably with other methods. Here, we show that the LoD for sensors based on GQDs can be lowered by orders of magnitude using a droplet-based analyte partitioning effect. While pre… Show more

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“…In the construction of fluorescent biosensors, fluorescent nanomaterials such as fluorescent organic nanoparticles (FONs), quantum dots, and metal-organic frameworks (MOFs) have gained great research interest due to their remarkable optical properties. [8][9][10] Among them, fluorescent polydopamine nanoparticles (FL-PDA NPs) were reported for the first time by Zhang's Group in 2012. 11 FL-PDA NPs could be obtained, due to oxidation of DA by hydrogen peroxide (H 2 O 2 ).…”
Section: Introductionmentioning
confidence: 99%
“…In the construction of fluorescent biosensors, fluorescent nanomaterials such as fluorescent organic nanoparticles (FONs), quantum dots, and metal-organic frameworks (MOFs) have gained great research interest due to their remarkable optical properties. [8][9][10] Among them, fluorescent polydopamine nanoparticles (FL-PDA NPs) were reported for the first time by Zhang's Group in 2012. 11 FL-PDA NPs could be obtained, due to oxidation of DA by hydrogen peroxide (H 2 O 2 ).…”
Section: Introductionmentioning
confidence: 99%