A nanocomposite optosensor containing carboxylic functionalized multiwall carbon nanotubes and quantum dots incorporated into a molecularly imprinted polymer for highly selective and sensitive detection of ciprofloxacin

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Naphat YuphintharakunOpas Bunkoed

Abstract

A nanocomposite optosensor consisting of carboxylic acid functionalized multiwall carbon nanotubes and CdTe quantum dots embedded inside a molecularly imprinted polymer (COOH@MWCNT-MIP-QDs) was developed for trace ciprofloxacin detection. The COOH@MWCNT-MIP-QDs were synthesized through a facile sol-gel process using ciprofloxacin as a template molecule, 3-aminopropylethoxysilane as a functional monomer and tetraethoxysilane as a cross-linker at a molar ratio of 1:8:20. The synthesized nanocomposite optosensor had high sensitivity, excellent specificity and high binding affinity to ciprofloxacin. Under optimal conditions, the fluorescence intensity of the optosensor decreased in a linear fashion with the concentration of ciprofloxacin and two linear dynamic ranges were obtained, 0.10-1.0 μg L-1 and 1.0-100.0 μg L-1 with a very low limit of detection of 0.066 μg L-1. The imprinting factors of the two linear range were 17.67 and 4.28, respectively. The developed nanocomposite fluorescence probe was applied towards the determination of ciprofloxacin levels in chicken muscle and milk samples with satisfactory recoveries being obtained in the range of 82.6 to 98.4%. The results were also in good agreement with a HPLC method which ind...Continue Reading

Citations

Aug 20, 2020·Analytical and Bioanalytical Chemistry·Eylem Turan, Adem Zengin
Dec 8, 2019·Sensors·Muqsit Pirzada, Zeynep Altintas
Dec 11, 2020·Analytical Methods : Advancing Methods and Applications·Weiwen HuangGuoqing Shen
Apr 14, 2020·Materials Science & Engineering. C, Materials for Biological Applications·Sunil KumarRashmi Madhuri
Apr 4, 2021·Micromachines·Norah Salem AlsaiariMohamed A Tahoon
Feb 20, 2019·Trends in Biotechnology·Marjan MajdinasabJean Louis Marty
Aug 20, 2021·Journal of Pharmaceutical and Biomedical Analysis·Nutnicha ChansudOpas Bunkoed
Jun 24, 2020·ACS Applied Materials & Interfaces·Van Dien DangRuey-An Doong

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