Novel fluorescence sensor for the selective recognition of tetracycline based on molecularly imprinted polymer-capped N-doped carbon dots

Wang, Qihui; Wu, Yiwen; Bao, Xumei; Yang, Min; Liu, Jun; Sun, Kang; Li, Zhonghui; Deng, Guowei

doi:10.1039/d2ra03923k

Cited by 6 publications

(4 citation statements)

References 39 publications

(37 reference statements)

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“…Chemically, MIPs are synthesized by bulk process where reaction occurs in a homogenous mixture [ 35 , 36 ]. Chemical interactions occurring between monomer and analyte may be through a non-covalent bond that can generate cavities on the bulk of the MIPs [ 37 , 38 , 39 , 40 , 41 ]. Research progress on MIP sensors for the detection of sucrose has demonstrated promising results in recent years.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Efficient and Non-Enzymatic Electrochemical Sensors for the Detection of Sucrose

Asghar

Mustafa

Jabeen

et al. 2023

Sensors

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Molecularly imprinted polymers have been used for the creation of an electrochemical sensor for the detection of sucrose, which are modified by using functionalized graphene (fG). Using AIBN as the free radical initiator and sucrose as the template, imprinted polymers are synthesized. The monomer, 4,4′-diisocyanatodiphenylmethane (DPDI), has both proton donor groups (N-H or O-H) and lone-pair donor groups (C=O). By creating H-bonds with electron donor groups (C=O), the proton donor group in this polymer may interact with the sugar molecule serving as its template. The sensor signals have improved as a result of the interaction between the monomer and the template. Thermogravimetric and differential thermal analysis (TGA/DTA) curves, scanning electron microscopy (SEM), and FT-IR spectroscopy have been employed to characterize the fabricated receptors. The fabricated sensor has exhibited a limit of detection of 16 ppb for the target analyte that is highly sensitive, linear, reversible, regenerative, and selective. Moreover, the sensor’s stability, reproducibility, and reusability have been evaluated for six months, following the device’s manufacturing, and the results revealed similar responses with the percentage error of less than 1%. Most importantly, this sensor has demonstrated a quick response time, which is very sensitive, stable, and selective.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Efficient and Non-Enzymatic Electrochemical Sensors for the Detection of Sucrose

Asghar

Mustafa

Jabeen

et al. 2023

Sensors

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“…Therefore, considering the spectral overlap between the absorption band of CTC and the excitation band of TP-CQDs, we speculate that the detection mechanism may be determined by IFE. In addition, electron transfer can be caused by the overlap of UV absorption bands. , The overlap between the UV–vis absorption spectra of CTC and TP-CQDs allows charge transfer from the conduction band of TP-CQDs to the lowest unoccupied molecular orbital of CTC and leads to the fluorescence quenching …”

Section: Resultsmentioning

confidence: 99%

“…In addition, electron transfer can be caused by the overlap of UV absorption bands. 42,43 The overlap between the UV−vis absorption spectra of CTC and TP-CQDs allows charge transfer from the conduction band of TP-CQDs to the lowest unoccupied molecular orbital of CTC and leads to the fluorescence quenching. 19…”

Section: Determination Of Ctc In Realmentioning

confidence: 99%

Two-Photon Carbon Quantum Dots for Detection of Chlortetracycline in Foods

Dong,

Zheng,

Wang

et al. 2023

ACS Appl. Nano Mater.

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Antibiotics are emerging contaminants in the environment, and their monitoring is important for food safety and human health. Herein, we synthesized a two-photon carbon quantum dots (TP-CQDs) nanoprobe using a simple and green hydrothermal approach and applied it as a chemosensor to detect chlortetracycline (CTC). CTC quenches the intrinsic fluorescence of TP-CQDs, providing a linear response within the 0.5 to 60 μM range and yielding a limit of detection of only 25 nM. Besides excellent stability and good optical properties, we found that TP-CQDs are selective to CTC as structurally similar antibiotics, along with cations, anions, and amino acids, had no significant influence on fluorescence emission. Finally, we successfully applied this sensing platform to quantify CTC in milk, fish, and eggs.

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“…To detect antibiotics in samples, various methods based on high-performance liquid chromatography (HPLC), 15 cyclic voltammetry (CV) analysis, 16 chemiluminescence, 17 liquid chromatography mass spectrometry 18 and uorescence sensors 19 have been developed. Owing to their advantages of simple operation, short detection time, high sensitivity and good selectivity, [20][21][22][23] uorescent sensors have become the ideal method for antibiotics.…”

Section: Introductionmentioning

confidence: 99%

Determination of moxifloxacin in milk using a ratiometric fluorescent sensor based on Ag-MOF@curcumin

Zhao,

Wang,

Song

et al. 2024

RSC Adv.

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Novel fluorescence sensor for the selective recognition of tetracycline based on molecularly imprinted polymer-capped N-doped carbon dots

Abstract: A novel fluorescent probe based on MIP coupled with N-doped CDs was prepared and used for sensitive recognition of tetracycline.

Cited by 6 publications

References 39 publications

Fabrication of Efficient and Non-Enzymatic Electrochemical Sensors for the Detection of Sucrose

Fabrication of Efficient and Non-Enzymatic Electrochemical Sensors for the Detection of Sucrose

Two-Photon Carbon Quantum Dots for Detection of Chlortetracycline in Foods

Determination of moxifloxacin in milk using a ratiometric fluorescent sensor based on Ag-MOF@curcumin

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