Perylenetetracarboxylic Diimide (PTCDI) Nanowires for Sensing Ethyl Acetate in Wine

Khopkar, Yashdeep; Kojtari, Arben; Swearer, Dayne F.; Živanović, Sandra; Ji, Haifeng

doi:10.1166/jnn.2014.9380

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…In the extraction of SO 2 from wine samples, the big advantage of HS–TFME is that less substrate disturbance was caused by the sample. According to previous reports, − the main coexisting volatile components in wine include ethanol, isopropyl alcohol, ethyl acetate, nerolidol, and acetaldehyde. The interference by these compounds was estimated following the same procedure as the sulfite analysis, except that the Na 2 SO 3 solution was replaced by the different above-mentioned volatile components at a concentration of 1000 μg/mL.…”

Section: Resultsmentioning

confidence: 89%

Headspace Thin-Film Microextraction Coupled with Surface-Enhanced Raman Scattering as a Facile Method for Reproducible and Specific Detection of Sulfur Dioxide in Wine

Deng¹,

Chen²,

Wang³

et al. 2014

Anal. Chem.

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By coupling thin-film microextraction (TFME) with surface-enhanced Raman scattering (SERS), a facile method was developed for the determination of sulfur dioxide (SO2), the most effective food additive in winemaking technology. The TFME substrate was made by free settling of sea urchin-like ZnO nanomaterials on a glass sheet. The headspace sampling (HS) procedure for SO2 was performed in a simple homemade device, and then the SO2 was determined using SERS after uniformly dropping or spraying a SERS-active substrate (gold nanoparticles, AuNPs) onto the surface of the TFME substrate. A reproducible and strong SERS response of the SO2 absorbed onto the ZnO substrate was obtained. After condition optimization, the SERS signal intensity at a shift of 600 cm(-1) and the SO2 concentration showed a good linearity in the range of 1-200 μg/mL, and the linear correlation coefficient was 0.992. The detection limit for SO2 was found to be 0.1 μg/mL. The HS-TFME-SERS method was applied for the determination of SO2 in wine, and the results obtained agreed very well with those obtained using the traditional distillation and titration method. Analysis of variance and Student t test show that there is no significant difference between the two methods, indicating that the newly developed method is fast, convenient, sensitive and has selective characteristics in the determination of SO2 in wine.

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Section: Resultsmentioning

confidence: 89%

Headspace Thin-Film Microextraction Coupled with Surface-Enhanced Raman Scattering as a Facile Method for Reproducible and Specific Detection of Sulfur Dioxide in Wine

Deng¹,

Chen²,

Wang³

et al. 2014

Anal. Chem.

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“…11,32,33 According to previous studies, the coexisting volatile components including ethanol, isopropyl alcohol, ethyl acetate, nerolidol, and acetaldehyde would most likely interfere with the determination of SO 2 . [34][35][36] Coincidently, through the comparison of the reported Raman spectra of these compounds, no obvious SERS signal was observed at the 620 cm −1 shift. Thus, it can be concluded that the coexisting volatile components in wine samples would not interfere with the determination of SO 2 .…”

Section: Reproducibility Of Sers Signal Using the μPadmentioning

confidence: 91%

A gas-diffusion microfluidic paper-based analytical device (μPAD) coupled with portable surface-enhanced Raman scattering (SERS): facile determination of sulphite in wines

Chen

Rong

et al. 2016

Analyst

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A novel facile method for on-site determination of sulphite in wine using a gas-diffusion microfluidic paper-based analytical device (μPAD) combined with surface-enhanced Raman spectroscopy (SERS) was explored. The inexpensive and disposable μPAD was realized by sandwiching the ZnO-paper disc and integrating gas-diffusion separation and gas preconcentration on a paper-based platform. Through extensive condition optimization, the SERS signal at a shift of 620 cm(-1) and the concentration of SO2 showed good linearity in the range of 5-300 μg mL(-1). The linear correlation coefficient was 0.995 and the detection limit for sulphite was found to be 2 μg mL(-1). Ultimately, this proposed method was applied to the determination of sulphite in wine, which can be essentially paralleled with the official method. Endowed with portability, minimal reagent consumption, and operational simplicity, this developed device would find broad utilization for on-site monitoring of sulphite.

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“…Under a proper set of conditions, similarly as described earlier, this process allows for the formation of nanostructures such as nanofibers or nanobelts. [ 18 ] Several research groups have demonstrated the potential of PVD‐processed nanomaterials in optoelectronic applications [ 19 ] including sensors [ 20 ] and transistors [ 21 ] as well as in biomedical and health care applications. [ 22 ] Molecular building blocks, which were used for this purpose, are among others pentacene, perylene, and porphyrin derivatives.…”

Section: Introductionmentioning

confidence: 99%

Mesostructured Nonwovens with Supramolecular Tricycloquinazoline Nanofibers as Heterogenous Photocatalyst

Schröder,

Neuber,

Mansfeld

et al. 2023

Small Science

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Functional supramolecular nanostructures are a promising class of materials, which can be used as potential heterogeneous photocatalysts in water. Self‐assembly to nanoobjects in solution typically requires large solubilizing groups linked to the photoactive building block, and possibly hampers access to the photocatalytic active sites. Herein, a straightforward method to fabricate supramolecular nanofibers based on the disclike tricycloquinazoline (TCQ) by physical vapor deposition (PVD) is reported. It is demonstrated that TCQ can be assembled on different substrates into supramolecular nanofibers with diameters of about 70 nm resulting in densely packed fiber layers. With optimized conditions, the evaporation time allows full control over the fiber length and the absorbance of the TCQ fiber layer. A bottlebrush‐like morphology with TCQ nanofibers is realized using glass‐microfiber nonwovens as porous support. These mesostructured nonwovens can be used as photocatalysts for the degradation of rhodamine B in a batch process in water where the morphology remains intact after the reaction. After photocatalytic degradation of rhodamine B or tetracycline under continuous flow conditions, the supramolecular TCQ nanofibers still remain on the support. These findings demonstrate that PVD is a feasible approach to achieve functional mesostructured nonwovens with controlled morphology for use and reuse in catalytic applications.

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Perylenetetracarboxylic Diimide (PTCDI) Nanowires for Sensing Ethyl Acetate in Wine

Cited by 4 publications

References 8 publications

Headspace Thin-Film Microextraction Coupled with Surface-Enhanced Raman Scattering as a Facile Method for Reproducible and Specific Detection of Sulfur Dioxide in Wine

Headspace Thin-Film Microextraction Coupled with Surface-Enhanced Raman Scattering as a Facile Method for Reproducible and Specific Detection of Sulfur Dioxide in Wine

A gas-diffusion microfluidic paper-based analytical device (μPAD) coupled with portable surface-enhanced Raman scattering (SERS): facile determination of sulphite in wines

Mesostructured Nonwovens with Supramolecular Tricycloquinazoline Nanofibers as Heterogenous Photocatalyst

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