Magnetic nanoprobes for rapid detection of copper ion in aqueous environment by surface-enhanced Raman spectroscopy

Hsieh, Min-Ying; Huang, Po‐Jung

doi:10.1039/d1ra07482b

Cited by 20 publications

(8 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the aggregation of nanoprobes was determined by the stability of chelating complexes. 54,55 As can be seen in Fig. 5b, signal intensity increased with increasing concentration of copper at the surface of nanoshells, since metal-chelation nanoshells can capture more dopamine molecules.…”

Section: Resultsmentioning

confidence: 80%

SERS detection of dopamine using metal-chelated Ag nanoshell

Kim,

Choi,

Jeong

2024

RSC Adv.

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 80%

SERS detection of dopamine using metal-chelated Ag nanoshell

Kim,

Choi,

Jeong

2024

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…The linear correlation for the concentration ranging from 0 to 30 min shows an R 2 value of 0.9725. However, the concentration range from 0 to 25 min shows better correlation (R 2 = 0.9939), indicating that at the 30th minute, the sensor is saturated and is reaching the upper limit of ammonia-vapour detection [ 65 ]. Therefore, the response time of 30 min was used in the following sensor-response analyses.…”

Section: Resultsmentioning

confidence: 99%

Starch/Polyaniline Biopolymer Film as Potential Intelligent Food Packaging with Colourimetric Ammonia Sensor

2022

View full text Add to dashboard Cite

The use of petroleum-based plastics in food packaging leads to various environmental impacts, while spoilage of food and misinterpretation of food-date labelling account for food insecurity; therefore, a biopolymer capable of indicating food edibility is prepared to resolve these issues. In this research, starch/polyaniline (starch/PANI) biopolymer film was synthesised and investigated as an ammonia sensor for potential application as intelligent food packaging. FT-IR and XRD were used to confirm the composition of the biopolymer films, while UV-Vis spectrometry was applied to identify the oxidation state of PANI in emeraldine form. PANI was successfully incorporated into the starch matrix, leading to better thermal stability (TGA) but decreasing the crystallinity of the matrix (DSC). The performance of the polymer-film sensor was determined through ammonia-vapour sensitivity analysis. An obvious colour change from green to blue of starch/PANI films was observed upon exposure to the ammonia vapour. Starch/PANI 0.4% is the optimum composition, having the best sensor performance with good linearity (R2 = 0.9459) and precision (RSD = 8.72%), and exhibiting excellent LOD (245 ppm). Furthermore, the starch/PANI films are only selective to ammonia. Therefore, the starch/PANI films can be potentially applied as colourimetric ammonia sensors for intelligent food packaging.

show abstract

“…Therefore, Cu 2+ ion detection requires the development of a platform with early screening, good selectivity, and minimal interference. [ 186 ] Therefore, a fluorescent biosensor for quantitative analysis of metal ions has been developed using cascaded cyclic amplification‐lighted CuNPs as signal carriers. T‐rich scaffolds can cause the formation of red fluorescent CuNPs, which were observed using a fluorescent colorimeter that did not have any tagged signal molecules.…”

Section: Functional Nanomaterials In Assaying Biomarkersmentioning

confidence: 99%

Recent advances in nanomaterials‐based optical sensors for detection of various biomarkers (inorganic species, organic and biomolecules)

Harshita

Kailasa

2022

Luminescence

View full text Add to dashboard Cite

This review briefly emphasizes the different detection approaches (electrochemical sensors, chemiluminescence, surface‐enhanced Raman scattering), functional nanostructure materials (quantum dots, metal nanoparticles, metal nanoclusters, magnetic nanomaterials, metal oxide nanoparticles, polymer‐based nanomaterials, and carbonaceous nanomaterials) and detection mechanisms. Furthermore, the emphasis of this review is on the integration of functional nanomaterials with optical spectroscopic techniques for the identification of various biomarkers (nucleic acids, glucose, uric acid, oxytocin, dopamine, ascorbic acid, bilirubin, spermine, serotonin, thiocyanate, Pb2+, Cu2+, Hg2+, F−, peptides), and cancer biomarkers (mucin 1, prostate specific antigen, carcinoembryonic antigen, CA15‐3, human epidermal growth factor receptor 2, C‐reactive protein, and interleukin‐6). Analytical characteristics of nanomaterials‐based optical sensors are summarized in the tables, providing the insights of nanomaterials‐based optical sensors for biomarkers detection. Finally, the opportunities and challenges of nanomaterials‐based optical analytical approaches for the detection of various biomarkers (inorganic, organic, biomolecules, peptides and proteins) are discussed.

show abstract

Magnetic nanoprobes for rapid detection of copper ion in aqueous environment by surface-enhanced Raman spectroscopy

Abstract: Magnetic SERS probes can rapidly detect copper ions within high precision and accuracy.

Cited by 20 publications

References 46 publications

SERS detection of dopamine using metal-chelated Ag nanoshell

SERS detection of dopamine using metal-chelated Ag nanoshell

Starch/Polyaniline Biopolymer Film as Potential Intelligent Food Packaging with Colourimetric Ammonia Sensor

Recent advances in nanomaterials‐based optical sensors for detection of various biomarkers (inorganic species, organic and biomolecules)

Contact Info

Product

Resources

About