Fluorescent carbon dots for glyphosate determination based on fluorescence resonance energy transfer and logic gate operation

Yuan, Yusheng; Jiang, Junze; Liu, Shaopu; Yang, Jinlong; Zhang, Hui; Yan, Jingjing; Hu, Xiaoli

doi:10.1016/j.snb.2016.11.050

Cited by 125 publications

(40 citation statements)

References 47 publications

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“…Expect the static quenching mechanism of CDs, glyphosate (Gly) can also be detected through FRET quenching mechanism of CDs. Yuan et al [72] synthesized CDs using citric acid and Tris via one-step hydrothermal method. The fluorescence intensity of the CDs can be effectively quenched by Gly through FRET quenching mechanism of CDs.…”

Section: Applications Of Fret Mechanisms Of Cds In Detecting Organicsmentioning

confidence: 99%

The quenching of the fluorescence of carbon dots: A review on mechanisms and applications

et al. 2017

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Carbon dots (CDs) possess unique optical properties such as tunable photoluminescence (PL) and excitation dependent multicolor emission. The quenching and recovery of the fluorescence of CDs can be utilized for detecting analytes. The PL mechanisms of CDs have been discussed in previous articles, but the quenching mechanisms of CDs have not been summarized so far. Quenching mechanisms include static quenching, dynamic quenching, Förster resonance energy transfer (FRET), photoinduced electron transfer (PET), surface energy transfer (SET), Dexter energy transfer (DET) and inner filter effect (IFE). Following an introduction, the review (with 88 refs.) first summarizes the various kinds of quenching mechanisms of CDs (including static quenching, dynamic quenching, FRET, PET and IFE), the principles of these quenching mechanisms, and the methods of distinguishing these quenching mechanisms. This is followed by an overview on applications of the various quenching mechanisms in detection and imaging.

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Section: Applications Of Fret Mechanisms Of Cds In Detecting Organicsmentioning

confidence: 99%

The quenching of the fluorescence of carbon dots: A review on mechanisms and applications

et al. 2017

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“…The QY of N-CNPs was calculated by the equation below as Equation (1): QY s = QY r · I s A r η s 2 /( I r A s η r 2 ) where “s” and “r” refer to the sample and reference, respectively. The reference quinine sulfate is dissolved in 0.1 M H 2 SO 4 and its QY is 0.54 at 340 nm [ 50 ]. “ I ” represents the integrated emission intensity of fluorescent spectra at the excited wavelength of 340 nm.…”

Section: Methodsmentioning

confidence: 99%

Nitrogen-Doped Carbon Nanoparticles Derived from Silkworm Excrement as On–Off–On Fluorescent Sensors to Detect Fe(III) and Biothiols

Liu

Wang

et al. 2018

Nanomaterials

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On–off–on fluorescent sensors based on emerging carbon nanoparticles (CNPs) or carbon dots (CDs) have attracted extensive attention for their convenience and efficiency. In this study, dumped silkworm excrement was used as a novel precursor to prepare fluorescent nitrogen-doped CNPs (N-CNPs) through hydrothermal treatment. The obtained N-CNPs showed good photoluminescent properties and excellent water dispersibility. Thus, they were applied as fluorescence “on–off–on” probes for the detection of Fe(III) and biothiols. The “on–off” process was achieved by adding Fe(III) into N-CNP solution, which resulted in the selective fluorescence quenching, with the detection limit of 0.20 μM in the linear range of 1–500 μM. Following this, the introduction of biothiols could recover the fluorescence efficiently, in order to realize the “off–on” process. By using glutathione (GSH) as the representative, the linear range was in the range of 1–1000 μM, and the limit of detection was 0.13 μM. Moreover, this useful strategy was successfully applied for the determination of amounts of GSH in fetal calf serum samples.

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“…Many other such examples exist. For fluorescent logic gates, such agents can respond to input presence with quenched fluorescence that is restored [44], shifts in fluorescent spectra F I G U R E 3 Different modes of action that biological logic gates may take. Single input responders respond to only a single input (although it is possible for other similar compounds to generate the same effect).…”

Section: Single Input Respondersmentioning

confidence: 99%

“…There are noticeably fewer examples of such FLT-based systems in the literature. Several materials have been created to respond with a changed FLT to a single condition, such as with temperature [85] or with viscosity [35,86], and some to respond to single chemical inputs, such as glyphosate [44], pH [34], or various ions [87]. Others developed nanostructures that respond by FLT or a combination of FI and FLT to describe various logic operations following exposure to multiple inputs [26,[88][89][90][91].…”

Section: Logic Gates Using Fltmentioning

confidence: 99%

Fluorescence for biological logic gates

Barnoy

Popovtzer

Fixler

2020

Journal of Biophotonics

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Biological logic gates are smart probes able to respond to biological conditions in behaviors similar to computer logic gates, and they pose a promising challenge for modern medicine. Researchers are creating many kinds of smart nanostructures that can respond to various biological parameters such as pH, ion presence, and enzyme activity. Each of these conditions alone might be interesting in a biological sense, but their interactions are what define specific disease conditions. Researchers over the past few decades have developed a plethora of stimuli‐responsive nanodevices, from activatable fluorescent probes to DNA origami nanomachines, many explicitly defining logic operations. Whereas many smart configurations have been explored, in this review we focus on logic operations actuated through fluorescent signals. We discuss the applicability of fluorescence as a means of logic gate implementation, and consider the use of both fluorescence intensity as well as fluorescence lifetime.

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Fluorescent carbon dots for glyphosate determination based on fluorescence resonance energy transfer and logic gate operation

Cited by 125 publications

References 47 publications

The quenching of the fluorescence of carbon dots: A review on mechanisms and applications

The quenching of the fluorescence of carbon dots: A review on mechanisms and applications

Nitrogen-Doped Carbon Nanoparticles Derived from Silkworm Excrement as On–Off–On Fluorescent Sensors to Detect Fe(III) and Biothiols

Fluorescence for biological logic gates

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