Nano-optical Biosensors for Assessment of Food Contaminants

Attia, M. S.; Mekky, Ahmed E. M.; Khan, Ziya Ahmad; Abdel‐Mottaleb, M. S. A.

doi:10.1007/978-3-319-66417-0_1

Cited by 6 publications

(3 citation statements)

References 73 publications

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“…This can be attributed to the formation of anhydrous solvates of Eu 3+ -(CFX) complex introducing solvent molecules in the first coordination sphere of Eu 3+ -(CFX) leads to the enhancement of the intensity of all transitions 5 D 0 → 7 F 4 =695 nm and 5 D 0 → 7 F 5 = 705 nm). Especially 5 D 0 → 7 F 2 transition in Eu 3+ (Fig.4), [34][35][36].…”

Section: Effect Of Solventmentioning

confidence: 96%

Highly sensitive Eu3+ doped in sol-gel matrix optical sensor for the assessment of Ciprofloxacin in different real samples

et al. 2017

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T HE EFFICIENCY of the excited-state interaction between Eu 3+ doped in sol-gel matrix and the industrial product ciprofloxacin of (CFX) has been studied in different solvents and pHs. A high luminescence intensity peak at 617 nm of europium-ciprofloxacin complex at λ ex =365 nm in acetonitrile was obtained. The photophysical properties of the red emissive Eu 3+ complex doped in sol-gel matrix have been elucidated, the europium was used as optical sensor for the assessment of ciprofloxacin in the pharmaceutical tablets and serum samples at pH 8.0 and λ ex = 365 nm with a concentration range of 5.0 ×10 −9-1.0 ×10 −6 mol L −1 for ciprofloxacin, correlation coefficient of 0.987 and detection limit of 1.65 ×10 −9 mol L −1 .

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Section: Effect Of Solventmentioning

confidence: 96%

Highly sensitive Eu3+ doped in sol-gel matrix optical sensor for the assessment of Ciprofloxacin in different real samples

et al. 2017

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“…Fig. 3 shows the effect of solvent on the luminescence intensity of the Tb-ACAC sensor embedded in the PMMA matrix [32][33][34][35][36][37][38]. The results show that the highest luminescence intensity for the optical sensor is obtained in ethanol.…”

Section: Absorption and Emission Spectramentioning

confidence: 99%

Spectrofluorometric Determination of Alpha Fetoprotein in different serum samples of Liver Cancer by Tb-acetyl acetone complex embedded in Polymethylmethacrylate optical sensor

2019

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A SIMPLE, precise and sensitive method in which, Tb-acetyl acetone (Tb-ACAC) complex embedded in polymethylmethacrylate (PMMA) is used for the early diagnosis of liver cancer. The diagnosis process depends on the assessment of the concentration of alpha fetoprotein (AFP) in the serum samples of different liver patients. The Tb-acetyl acetone (Tb-ACAC) embedded in PMMA has strong emission band at 545 nm after excitation at 350 nm in ethanol. The assessment of alpha fetoprotein (AFP) depends on the quenching of the emission band at 545 nm in ethanol by the alpha fetoprotein (AFP). The calibration plot was achieved over the concentration 1 -550 ng/mL with a correlation coefficient of 0.99 and a detection limit of 0.5 ng/mL. The method was used satisfactorily for the diagnosis of liver cancer in a number of serum samples collected from various patients and health state; healthy (≤ 10 ng/mL) and HCC (400-550 ng/mL).

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“…This may be due to vibrational energy transfer to the solvent molecules. It is well knowing that the excited state of the lanthanide ions is efficiently quenched by interactions with high-energy vibrations like O-H groups thereby the luminescence of this complex in -OH containing solvents can be quenched easily because of the O-H oscillators [15][16][17][18][19][20][21][22].…”

Section: Effect Of Solventmentioning

confidence: 99%

Tb -4'carboxybenzo-18crown-6-ether Photo Probe or the Assessment of Nalbuphin HCl in Serum and Pharmaceutical Formulations

2018

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T HE EFFICIENCY of excited-state interaction between Tb 3+ and the 4'carboxybenzo-18crown-6-ether (CCE) has been studied in different solvents and pH. The high luminescence intensity of Tb-complex in DMF at 545 nm was obtained. The photo physical properties of the green emissive Tb 3+ complex have been elucidated. The Tb-CCE was used as photo probe for the assessment ofNalbuphine HCl in the pharmaceutical amp and serum samples at pH 6.5 and λ ex = 285 nm with a linear range 5x10 -8 to 1.2x10 -6 mol L −1 ofNalbuphine HCl, correlation coefficient of 0.993 and detection limit of 9.4 x10 -9 mol L −1 .

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Nano-optical Biosensors for Assessment of Food Contaminants

Cited by 6 publications

References 73 publications

Highly sensitive Eu3+ doped in sol-gel matrix optical sensor for the assessment of Ciprofloxacin in different real samples

Highly sensitive Eu3+ doped in sol-gel matrix optical sensor for the assessment of Ciprofloxacin in different real samples

Spectrofluorometric Determination of Alpha Fetoprotein in different serum samples of Liver Cancer by Tb-acetyl acetone complex embedded in Polymethylmethacrylate optical sensor

Tb -4'carboxybenzo-18crown-6-ether Photo Probe or the Assessment of Nalbuphin HCl in Serum and Pharmaceutical Formulations

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