A facile electrochemical sensor based on green synthesis of Cs/Ce-MOF for detection of tryptophan in human serum

Zhang, Li; Sun, Mingbo; Jing, Tao; Li, Shaobin; Ma, Huiyuan

doi:10.1016/j.colsurfa.2022.129225

Cited by 28 publications

(6 citation statements)

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“…26,27 To overcome these limitations, MOFs are combined with other functional materials such as carbon nanotubes, 28 metal nanoparticles, 29 and polymers 30 such as chitosan. 31 The latter is a natural polymer widely used in electrochemical sensing 32,33 due to its attractive proprieties such as biocompatibility, permeability and excellent ability to form conductive and stable films. 34 Taking this into account, chitosan can be a good candidate to immobilize MOFs into the surface of electrodes.…”

Section: Introductionmentioning

confidence: 99%

Non-enzymatic amperometric glucose sensing by novel Cu-MOF synthesized at room temperature

Guesmi,

Moulaee,

Bressi

et al. 2024

Mater. Adv.

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Section: Introductionmentioning

confidence: 99%

Non-enzymatic amperometric glucose sensing by novel Cu-MOF synthesized at room temperature

Guesmi,

Moulaee,

Bressi

et al. 2024

Mater. Adv.

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“…To date, different materials with distinctive electrochemical properties, including graphene oxide, [14,15] metal organic frameworks, [16,17] carbon nanotubes, [18,19] and covalent organic frameworks (COFs), [20][21][22] have been used as electrochemical sensors to determine dopamine, UA, and ascorbic acid levels. Among them, COFs have received considerable attention in many applications for their large surface area, [23] pre-engineered hole shape, excellent crystallinity, [24] and high chemical stability.…”

Section: Introductionmentioning

confidence: 99%

Development of a novel vinylene‐linked covalent organic framework decorated with multi‐walled carbon nanotubes for electrochemical detection of tryptophan, uric acid, and 8‐hydroxy‐2′‐deoxyguanosine

Chung

Shih

Lee

2023

J Chinese Chemical Soc

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BackgroundIn this study, a vinylene‐linked covalent organic framework (V‐COF‐1) was integrated with multi‐walled carbon nanotubes (MWCNTs) to create a modified electrode (V‐COF‐1/MWCNTs/SPCE) for electrochemical sensing applications.ObjectiveThis research focus to investigate the application of the modified electrode for the simultaneous determination of tryptophan (Trp), uric acid (UA), and 8‐hydroxy‐2'‐deoxyguanosine (8‐OHdG) in human urine samples and the mechanism between V‐COF‐1 and the analytes (Trp, UA, and 8‐OHdG) by studying tryptophan metabolites, dopamine, and L‐3,4‐dihydroxyphenylalanine (L‐DOPA).MethodsThe electrochemical performance of V‐COF‐1/MWCNTs/SPCE was evaluated using differential pulse voltammetry (DPV) and use cyclic voltammetry (CV) to detect the modified electrode to explore its electrochemical properties.ResultsUnder optimized conditions, V‐COF‐1/MWCNTs/SPCE exhibited efficient electron transfer for Trp, UA, and 8‐OHdG, with low detection limits (S/N = 3) of 0.03 μM, 0.06 μM, and 0.006 μM, respectively. The modified electrode demonstrated high selectivity for the target analytes in the presence of interfering species, as well as excellent repeatability and stability. The recoveries of Trp, UA, and 8‐OHdG in human urine samples ranged from 90.6% to 104.8%, which shows that this method has been successfully applied for the simultaneous detection of Trp, UA and 8‐OHdG in biological sample analysis.ConclusionsThe integration of V‐COF‐1 and MWCNTs onto the modified electrode showed promising results for the simultaneous detection of Trp, UA, and 8‐OHdG. The developed sensor exhibited excellent sensitivity, selectivity, repeatability, and stability. These findings contribute to the advancement of electrochemical sensor technology for biomedical applications and highlight the potential of V‐COF‐1/MWCNTs/SPCE in analytical chemistry.

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“…Numerous techniques have been developed to determine Trp such as high-performance liquid chromatography, 6 electrochemiluminescence, 7 capillary electrophoresis, 8 and electrochemical sensors. 9 Sensitive detection of important biomolecules, such as Trp, is essential in pharmaceutical and biological samples. Since these kinds of biomolecules exist in low concentrations, sensitive biosensors should be developed.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Therefore, simple, accurate, and sensitive methods for determining Trp are highly required to detect Trp in food, biological systems, and pharmaceutical formulations. Numerous techniques have been developed to determine Trp such as high-performance liquid chromatography, electrochemiluminescence, capillary electrophoresis, and electrochemical sensors …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nitrogen Defect-Rich Graphitic Carbon Nitride for Highly Sensitive Voltammetric Determination of Tryptophan

Mihret,

Sisay,

Diro

et al. 2023

ACS Omega

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Here, a highly sensitive electrochemical sensor for detection of tryptophan (Trp) using a nitrogen defect graphitic carbon nitride-modified glassy carbon electrode (ND-CN/GCE) was introduced. ND-CN/GCE showed a higher oxidation current for Trp than the graphitic carbon nitride-modified glassy carbon electrode ( g -CN/GCE) and bare glassy carbon electrode (BGCE). The synthesized nitrogen defect-rich graphitic carbon nitride (ND-CN) was characterized using X-ray photoelectron spectroscopy, X-ray diffraction spectroscopy, Fourier-transform infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy. Electrochemical impedance spectroscopy and cyclic voltammetry were used to further analyze the electrochemical properties of BGCE, g -CN/GCE, and ND-CN/GCE. The oxidation of Trp at ND-CN/GCE is a diffusion-controlled process at pH 3.0. It was calculated that the transfer coefficient, rate constant, and diffusion coefficient of Trp were 0.53, 2.24 × 10 3 M –1 s –1 , and 8.3 × 10 –3 cm 2 s –1 , respectively, at ND-CN/GCE. Trp was detected using square wave voltammetry, which had a linear range from 0.01 to 40 μM at pH 3.0 and a limit of detection of about 0.0034 μM (3σ/ m ). Analyzing the presence of Trp in a milk and multivitamin tablet sample with a percentage recovery in the range of 97.0–108% satisfactorily demonstrated the practical usability of the electrochemical sensor. The ND-CN/GCE additionally displays good repeatability and reproducibility and satisfactory selectivity.

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A facile electrochemical sensor based on green synthesis of Cs/Ce-MOF for detection of tryptophan in human serum

Cited by 28 publications

References 58 publications

Non-enzymatic amperometric glucose sensing by novel Cu-MOF synthesized at room temperature

Non-enzymatic amperometric glucose sensing by novel Cu-MOF synthesized at room temperature

Development of a novel vinylene‐linked covalent organic framework decorated with multi‐walled carbon nanotubes for electrochemical detection of tryptophan, uric acid, and 8‐hydroxy‐2′‐deoxyguanosine

Nitrogen Defect-Rich Graphitic Carbon Nitride for Highly Sensitive Voltammetric Determination of Tryptophan

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