Fluorescent carbon dots for auramine O determination and logic gate operation

Zhu, Jinghui; Li, Mengmeng; Liu, Shaopu; Liu, Zhongfang; Li, Yuanfang; Hu, Xiaoli

doi:10.1016/j.snb.2015.05.032

Cited by 48 publications

(18 citation statements)

References 29 publications

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“…In their work instead of fluorescence intensity (FI), the appearance of two peaks was taken as an output. They demonstrated dual emission, which is the auramine O-stimulated response [ 63 ]. Chattopadhyay and co-workers have synthesized CDs for logic operation in two different phases, i.e., solid and liquid phases.…”

Section: Carbon Dots Design For Logic Functionmentioning

confidence: 99%

Carbon Dots-Based Logic Gates

et al. 2021

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Carbon dots (CDs)-based logic gates are smart nanoprobes that can respond to various analytes such as metal cations, anions, amino acids, pesticides, antioxidants, etc. Most of these logic gates are based on fluorescence techniques because they are inexpensive, give an instant response, and highly sensitive. Computations based on molecular logic can lead to advancement in modern science. This review focuses on different logic functions based on the sensing abilities of CDs and their synthesis. We also discuss the sensing mechanism of these logic gates and bring different types of possible logic operations. This review envisions that CDs-based logic gates have a promising future in computing nanodevices. In addition, we cover the advancement in CDs-based logic gates with the focus of understanding the fundamentals of how CDs have the potential for performing various logic functions depending upon their different categories.

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Section: Carbon Dots Design For Logic Functionmentioning

confidence: 99%

Carbon Dots-Based Logic Gates

et al. 2021

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“…Nikitin et al made a system of various logic operations, where a “true” or “false” response was decided by whether the FI was greater than a certain cut‐off [31]. Zhu et al described their logic operation by changes to the fluorescence spectra in different situations, observing whether one or two peaks could be seen based on input situations [32]. Bui et al determined gate output based on the presence or lack of Förster resonance energy transfer (FRET) signals [33].…”

Section: Choice Of Outputmentioning

confidence: 99%

“…De Silva et al were among the first to describe logic operations by means of molecules, and used fluorescence to do so [66]. Others continued similar work to have combinations of ions or other biologically relevant molecules affect the FI [25, 32, 43, 60, 62, 67–77], sometimes in very versatile settings to allow for easy manipulation of the system to create any desired logic gate [31, 78]. Another direction has been the use of enzymes to affect the FI in logic operations [33, 79].…”

Section: Different Kinds Of Logic Gatesmentioning

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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“…[ 12–16 ] These methods usually complicated sample pretreatment, expensive equipment and long‐term detection times, thus it is essential to develop an economical, rapid and sensitive technique to detect FCF. [ 17,18 ] In particular, carbon dots (CDs) have received a lot of attention due to their good dispersion, excellent luminescence, favorable biocompatibility, low cost and stability. [ 19 ] The photoluminescence properties of CDs are significantly related to their quantum particle size and surface functional groups.…”

Section: Introductionmentioning

confidence: 99%

Fluorescence Sensing Performance of Carbon Dots of Functionalization toward Sunset Yellow

Sun

Yan

et al. 2021

Part & Part Syst Charact

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Sunset yellow (FCF), a commonly used food additive, can brighten foods, but the improper amount of addition can also cause various diseases. Herein, the fluorescence sensor CDs‐PTD for detecting FCF is synthesized by functionalizing carbon dots (CDs) with 3,4,9,10‐pertetracarboxylic dianhydride (PTD). The prepared CDs‐PTD shows excitation‐independent fluorescence behavior with maximum fluorescence emission at 553 nm under 490 nm excitation and high quantum yields (21.4%). With the presence of FCF, the fluorescence of the sensor is quenched due to fluorescence resonance energy transfer (FRET). The CDs‐PTD exhibits excellent selectivity and sensitivity toward FCF in the range of 0–180 × 10−6 m with a low detection limit of 106.8 × 10−9 m. In addition, the sensor is applied to the detection of FCF in beverage samples with recoveries ranging from 97% to 106%. And a portable CDs‐PTD/agarose gel reagent strip is prepared for the assessment of FCF content within 15 min. The CDs‐PTD can be an ideal sensor for detecting FCF in food, and provides a new idea for the detection of food additives.

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Fluorescent carbon dots for auramine O determination and logic gate operation

Cited by 48 publications

References 29 publications

Carbon Dots-Based Logic Gates

Carbon Dots-Based Logic Gates

Fluorescence for biological logic gates

Fluorescence Sensing Performance of Carbon Dots of Functionalization toward Sunset Yellow

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