Gold nanoparticles‐based fluorescence enhancement of the terbium–levofloxacin system and its application in pharmaceutical preparations

Lee, Sang Hak; Wabaidur, Saikh Mohammad; ALOthman, Zeid A.; Alam, Seikh Mafiz

doi:10.1002/bio.1311

Cited by 16 publications

(12 citation statements)

References 21 publications

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“…Several MEF approaches have been developed for enhanced sensitivity in the detection of various analytes such as levofloxacin (LOD, 0.2 nM), Hg 2+ (LOD, 4.5 nM) and β-galactosidase (LOD, 100 nM). [163][164][165] Although MEF allows for improved sensitivity, the enhancement is usually limited to 10 fold.…”

Section: Metal Enhanced Fluorescencementioning

confidence: 99%

Gold nanoparticles as sensitive optical probes

Yuan

Chang

et al. 2016

Analyst

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Gold nanoparticles (Au NPs) have become one of the most popular materials for sensing of analytes of interest in the last decade, mainly because of their ease in preparation and conjugation, stability, biocompatibility, and size-dependent optical properties. We have witnessed many sensitive and selective Au NP based optical systems for the quantitation of metal ions, anions, proteins, and DNA, based on analyte induced changes in their absorption, fluorescence, and scattering. In this tutorial review, we briefly discuss wet chemical approaches for the preparation of Au NPs. Sensing mechanisms and strategies of Au NP based optical systems are provided to show basic concepts in designing sensitive and selective sensing systems. Strategies for signal amplification applied in Au NP based systems are emphasized for the analysis of trace amounts of analytes in real samples. Many excellent Au NP based optical sensing systems are discussed to highlight their practicality for the analysis of complicated biological and environmental samples. The tutorial review ends with the discussion of the challenges and future trends of Au NP based optical sensing systems.

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Section: Metal Enhanced Fluorescencementioning

confidence: 99%

Gold nanoparticles as sensitive optical probes

Yuan

Chang

et al. 2016

Analyst

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“…There is a drastic increase in fluorescence in microheterogeneous organized media rather than homogenous solutions [90,91]; micellar solutions obtained with anionic surfactants have the role of bringing the reactants together by trapping the energy donor inside the micelle and binding the lanthanide ion to its surface [85], enhancing the stability of the complexes and shielding them from quenchers [91]. The same effect can be obtained by using coordination polymer nanoparticles (CPNPs) [92], coordination polymer nanosheets (CPNSs) [93] or nanoparticles (NPs) [84,[94][95][96][97][98][99]. The source of the electromagnetic radiation necessary to obtain the excited state of the ligand is either the Xe lamp of the spectrofluorometer, or a chemical species in an excited state, such as SO 2 * obtained through a chemical reaction (chemiluminiscence).…”

Section: Quantitative Determination Of Quinolonesmentioning

confidence: 99%

Quinolone Complexes with Lanthanide Ions: An Insight into their Analytical Applications and Biological Activity

2020

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Quinolones comprise a series of synthetic bactericidal agents with a broad spectrum of activity and good bioavailability. An important feature of these molecules is their capacity to bind metal ions in complexes with relevant biological and analytical applications. Interestingly, lanthanide ions possess extremely attractive properties that result from the behavior of the internal 4f electrons, behavior which is not lost upon ionization, nor after coordination. Subsequently, a more detailed discussion about metal complexes of quinolones with lanthanide ions in terms of chemical and biological properties is made. These complexes present a series of characteristics, such as narrow and highly structured emission bands; large gaps between absorption and emission wavelengths (Stokes shifts); and long excited-state lifetimes, which render them suitable for highly sensitive and selective analytical methods of quantitation. Moreover, quinolones have been widely prescribed in both human and animal treatments, which has led to an increase in their impact on the environment, and therefore to a growing interest in the development of new methods for their quantitative determination. Therefore, analytical applications for the quantitative determination of quinolones, lanthanide and miscellaneous ions and nucleic acids, along with other applications, are reviewed here.

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“…In recent years, metal nanoparticles have been introduced in lanthanides luminescence measurements as surface enhancers that can amplify and improve their luminescence (24)(25)(26)(27)(28)(29)(30). Lee et al (27) reported the determination of levofloxacin using gold nanoparticles (AgNP)-enhanced fluorescence of the Tblevofloxacin system. Kamruzzaman et al (25) applied AgNPenhanced fluorescence to the sensing of terbium complex for the sensitive determination of fluoroquinolones.…”

Section: Introductionmentioning

confidence: 99%

Determination of fluoxetine in pharmaceutical and biological samples based on the silver nanoparticle enhanced fluorescence of fluoxetine–terbium complex

Lotfi

Manzoori

2016

Luminescence

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In this study, a simple and sensitive spectrofluorimetric method is presented for the determination of fluoxetine based on the enhancing effect of silver nanoparticles (AgNPs) on the terbium-fluoxetine fluorescence emission. The AgNPs were prepared by a simple reduction method and characterized by UV-Vis spectroscopy and transmission electron microscopy. It was indicated that these AgNPs have a remarkable amplifying effect on the terbium-sensitized fluorescence of fluoxetine. The effects of various parameters such as AgNP and Tb concentration and the pH of the media were investigated. Under obtained optimal conditions, the fluorescence intensity of the terbium-fluoxetine-AgNP system was enhanced linearly by increasing the concentration of fluoxetine in the range of 0.008 to 19 mg/L. The limit of detection (b + 3s) was 8.3 × 10 mg/L. The interference effects of common species found in real samples were also studied. The method had good linearity, recovery, reproducibility and sensitivity, and was satisfactorily applied for the determination of fluoxetine in tablet formulations, human urine and plasma samples. Copyright © 2016 John Wiley & Sons, Ltd.

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Gold nanoparticles‐based fluorescence enhancement of the terbium–levofloxacin system and its application in pharmaceutical preparations

Cited by 16 publications

References 21 publications

Gold nanoparticles as sensitive optical probes

Gold nanoparticles as sensitive optical probes

Quinolone Complexes with Lanthanide Ions: An Insight into their Analytical Applications and Biological Activity

Determination of fluoxetine in pharmaceutical and biological samples based on the silver nanoparticle enhanced fluorescence of fluoxetine–terbium complex

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