A rapid and sensitive assay for determination of doxycycline using thioglycolic acid-capped cadmium telluride quantum dots

Tashkhourian, Javad; Absalan, Ghodratollah; Jafari, Mohammad; Zare, Saber

doi:10.1016/j.saa.2015.07.063

Cited by 45 publications

(23 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The detection limit was determined to be 117 nM (52 µg/kg) and the linear region was between 0.2 µM and 6 µM. Compared to other methods reported for doxycycline detection, such as fluorescence (LOD: 110 nM; 49 µg/kg) [28], electrochemical (LOD: 43.5 µM; 19.3 mg/kg) [29] and spectrophotometric (LOD: 710 nM; 315 µg/kg) [30] sensors, our multifunctional FMIPs demonstrated comparable or higher sensitivity.…”

Section: Fluorescence Properties Of Feo X @Sio 2 -Fmipsmentioning

confidence: 86%

A multifunctional molecularly imprinted polymer-based biosensor for direct detection of doxycycline in food samples

Ashley

Feng

Sun

2018

Talanta

View full text Add to dashboard Cite

In this study, we developed a new type of multifunctional molecularly imprinted polymer (MIP) composite as an all-in-one biosensor for the low-cost, rapid and sensitive detection of doxycycline in pig plasma. The MIP composite consisted of a magnetic core for ease of manipulation, and a shell of fluorescent MIPs for selective recognition of doxycycline. By simply incorporating a small amount of fluorescent monomer (fluorescein-O-acrylate), the fluorescent MIP layer was successfully grafted onto the magnetic core via a surface imprinting technique. The resultant MIP composites showed significant doxycycline-dependent fluorescence quenching in an aqueous environment. Good linearity ranging from 0.2 to 6 µM was achieved, and the limit of detection was determined to be 117 nM. The biosensor also showed good selectivity towards doxycycline when compared to other common antibiotic residues. The multifunctional MIP composites were used to directly extract doxycycline from spiked pig plasma samples and quantify the antibiotics based on the quenched fluorescence signals. Recoveries of doxycycline were found in the range of 88-107%.

show abstract

Section: Fluorescence Properties Of Feo X @Sio 2 -Fmipsmentioning

confidence: 86%

A multifunctional molecularly imprinted polymer-based biosensor for direct detection of doxycycline in food samples

Ashley

Feng

Sun

2018

Talanta

View full text Add to dashboard Cite

show abstract

“…To identify the mechanism of quenching process, Stern-Volmer equation has been plotted at a different temperature. Obtained results showed that the quenching mechanism was dynamic [103].…”

Section: Fluorescence-based Measurementsmentioning

confidence: 97%

Quantum Dots for Pharmaceutical and Biomedical Analysis

Kara¹,

Ertaş²

2017

Spectroscopic Analyses - Developments and Applications

View full text Add to dashboard Cite

Quantum dots (QDs) are luminescent semiconductor nanocrystals that have extraordinary luminescence emission properties. Their semiconductor properties are different from bulk material because of the quantum confinement effects. These properties allow the use of QDs as a luminescent probe for pharmaceutical and biomedical analysis. Herein, we want to mention the synthesis, surface modification, characterization, and application of QDs. The aim of this chapter is to compile and discuss the advantages and disadvantages of QDs and their usage areas.

show abstract

“…Despite the positive impact on economic aspects, excessive use of pesticides can lead to the production of harmful chemical intermediates in vegetables, fruits and other agricultural products, which is a serious threat to food safety and human health. In order to ensure constant control of the concentration of these substances in agricultural products, it is necessary to find quick methods to confirm the presence and define their concentration [ 97 , 98 , 99 , 100 , 101 , 102 ]. Table 7 presents an exemplary fluorescent strategies for pesticides determination with using of QDs.…”

Section: Applications Of Qds-based Sensorsmentioning

confidence: 99%

Optical Sensors Based on II-VI Quantum Dots

et al. 2019

View full text Add to dashboard Cite

Fundamentals of quantum dots (QDs) sensing phenomena show the predominance of these fluorophores over standard organic dyes, mainly because of their unique optical properties such as sharp and tunable emission spectra, high emission quantum yield and broad absorption. Moreover, they also indicate no photo bleaching and can be also grown as no blinking emitters. Due to these properties, QDs may be used e.g., for multiplex testing of the analyte by simultaneously detecting multiple or very weak signals. Physico-chemical mechanisms used for analyte detection, like analyte stimulated QDs aggregation, nonradiative Förster resonance energy transfer (FRET) exhibit a number of QDs, which can be applied in sensors. Quantum dots-based sensors find use in the detection of ions, organic compounds (e.g., proteins, sugars, volatile substances) as well as bacteria and viruses.

show abstract

A rapid and sensitive assay for determination of doxycycline using thioglycolic acid-capped cadmium telluride quantum dots

Cited by 45 publications

References 44 publications

A multifunctional molecularly imprinted polymer-based biosensor for direct detection of doxycycline in food samples

A multifunctional molecularly imprinted polymer-based biosensor for direct detection of doxycycline in food samples

Quantum Dots for Pharmaceutical and Biomedical Analysis

Optical Sensors Based on II-VI Quantum Dots

Contact Info

Product

Resources

About