Turn-on fluorimetric sensor for water dispersed volatile organic compounds - A nanosponge approach

Kisiel, Anna; Baniak, Barbara; Maksymiuk, Krzysztof; Michalska, Agata

doi:10.1016/j.snb.2020.127904

Cited by 11 publications

(9 citation statements)

References 40 publications

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“…The recorded emission spectra confirmed that formation of POT dispersion in styrene occurs, Figure 4. The spectra recorded for this system, despite the presence of excess of aqueous phase, are characteristic for de-aggregated polymer, solubilized in the solvent -strong emission maximum at 580 nm is observed [16,25]. It should be stressed that high affinity of lipophilic PVDF membrane to the model solvent, immiscible with aqueous phase, has resulted in formation of a liquid film on the surface of hydrophobic membrane, as proven by dissolution of POT and respective change in emission spectra, although the amount of styrene in the solution was close to 0.17 % v/v.…”

Section: Resultsmentioning

confidence: 84%

“…In this proof of concept experiments, PVDF membrane was modified before placing in capacitor-like Swagelok ® system by POT particulates. POT modification was chosen to be able to follow effect of interaction of the analyte with PVDF membrane using optical methods [16,17] as well as acknowledging the redox activity of this polymer.…”

Section: Resultsmentioning

confidence: 99%

“…This type probes explore change of optical properties of dyes in response to interactions with the analyte. Optical quantification of volatile organic compounds dispersed in a solution can benefit from e. g. emission increase related to de-aggregation (dissolution) of dye nanostructures dispersed in the solution in response to analyte presence in the solution, offering high sensitivity, fast response and reversibility [16,17].…”

Section: Introductionmentioning

confidence: 99%

“…As model analyte, styrene was used. PVDF hydrophobic membranes were modified with polyoctylthiophene (POT) acknowledging its applicability of VOCs sensing using different techniques [16,21,22].…”

Section: Introductionmentioning

confidence: 99%

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An Electrochemical Approach to Quantification of Volatile Organic Solvents Dispersed in Solution – Towards Bipolar Electrode Sensors

et al. 2021

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A novel approach to electrochemical determination of volatile organic compounds (VOCs) suspended in a solution is proposed. This approach benefits from properties of capacitors linked in series, where the total capacitance is affected by analyte induced changes. A tailor designed hydrophobic PVDF membrane modified with polyoctylthiophene used in this arrangement played a role of a bipolar electrode. The presence of water immiscible liquid VOCs results in spontaneous formation of a thin film on the surface of the hydrophobic polymer membrane and dissolution of modifying particulates. This effect leads to change of electrical parameters of the system: capacitance and resistance dependent on amount of VOCs present in the aqueous phase.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Electrochemical Approach to Quantification of Volatile Organic Solvents Dispersed in Solution – Towards Bipolar Electrode Sensors

et al. 2021

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“…The sensitivity of a conductive material-based sensor is defined by change in the electrical conductivity of the semiconducting material when exposed to test volatiles. Nanoparticles such as spherical Cd 2 SnO 4 and Zn 2 SnO 4 provide large surface area for the absorption and have high electron density [ 136 ]. The electrochemical DNA sensor was developed to perform the direct determination in intact genomic DNA extracted from tomato seeds [ 137 ].…”

Section: The Fourth Industrial Revolution In Packaging and Tomato mentioning

confidence: 99%

Biodegradable Food Packaging Materials and Prospects of the Fourth Industrial Revolution for Tomato Fruit and Product Handling

Chisenga

Tolesa

Workneh

2020

International Journal of Food Science

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The environment and food safety are major areas of concern influencing the development of biodegradable packaging for partial replacement of petrochemical-based polymers. This review is aimed at updating the recent advances in biodegradable packaging material and the role of virtual technology and nanotechnology in the tomato supply chain. Some of the common biodegradable materials are gelatin, starch, chitosan, cellulose, and polylactic acid. The tensile strength, tear resistance, permeability, degradability, and solubility are some of the properties defining the selection and utilization of food packaging materials. Biodegradable films can be degraded in soil by microbial enzymatic actions and bioassimilation. Nanoparticles are incorporated into blended films to improve the performance of packaging materials. The prospects of the fourth industrial revolution can be realized with the use of virtual platforms such as sensor systems in authentification and traceability of food and packaging products. There is a research gap on the development of a hybrid sensor system unit that can integrate sampling headspace (SHS), detection unit, and data processing of big data for heterogeneous tomato-derived volatiles. Principal component analysis (PCA), linear discriminant analysis (LDA), and artificial neutral network (ANN) are some of the common mathematical models for data interpretation of sensor systems.

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Nanofibers as optical sensors for model VOCs dispersed in aqueous phase

et al. 2023

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Nanofibers mats, prepared from poly(vinyl chloride) (PVC) containing dispersed dye Nile red (NR) were applied in a proof of concept study as optical sensors for Volatile Organic Compounds (VOCs) dispersed in an aqueous phase. Benefiting from the solubility of the dye, and in some cases, also of the polymer in model solvents belonging to the group of VOCs, an increase of emission was observed for increasing solvent concentration in the sample.The optical signal formation was observed regardless if only the dye or both dye and PVC were soluble in the tested solvent. In both cases, high sensitivity emission increases for increasing VOCs present in the aqueous phase were observed within the range of concentration of model analytes: from 200 ppm of m-xylene or from 300 ppm of styrene, to up to ca 1500 ppm. The obtained higher detection limit was lower compared to films of PVC containing the dye due to the lower availability of the material to be dissolved by analyte -solvent. The large surface area of nanofibers was useful in the detection, leading to higher signal changes compared to films.

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Turn-on fluorimetric sensor for water dispersed volatile organic compounds - A nanosponge approach

Cited by 11 publications

References 40 publications

An Electrochemical Approach to Quantification of Volatile Organic Solvents Dispersed in Solution – Towards Bipolar Electrode Sensors

An Electrochemical Approach to Quantification of Volatile Organic Solvents Dispersed in Solution – Towards Bipolar Electrode Sensors

Biodegradable Food Packaging Materials and Prospects of the Fourth Industrial Revolution for Tomato Fruit and Product Handling

Nanofibers as optical sensors for model VOCs dispersed in aqueous phase

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