Single Molecule Microscopic Detection of Corrosion Reactions using “Turned-on” Fluorophores

Saini, Anuj; Kisley, Lydia

doi:10.1017/s1431927621001392

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…Fluorescent sensors, which are commonly used in biological, [35][36][37] medical, 38 and environmental sensing, 39 show potential application in corrosion detection but have not been used quantitatively. [40][41][42][43][44][45] Fluorescent sensors can probe corrosion either at a cathodic area by taking part in cathodic reductions or at an anodic area by responding to metal ions or pH change (Figure 1a). 40 For instance, we have reported that weakly fluorescent resazurin can sense corrosion by a reduction reaction to produce highly fluorescent resorufin in water and organic solvents, 27,46 and at single molecular detection levels.…”

Section: Introductionmentioning

confidence: 99%

A turn-off fluorescent sensor for metal ions quantifies corrosion in an organic solvent

Liu,

Pfaffenberger,

Seigel

et al. 2023

Preprint

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We demonstrate that the corrosion of AISI 1045 medium carbon steel and pure aluminum can be quantified by the turn-off fluorescent sensor Phen Green-SK (PGSK) in ethanol-based solutions. We first evaluate the dependence of the chelation enhanced quenching of PGSK on iron and aluminum ion concentrations. Subsequently, we apply PGSK to examine the anodic dissolution of metal corrosion. The observed time-dependent PGSK-quenching quantifies the corrosion rates of two metals over 24-hours of immersion in ethanol-based solutions. The PGSK-based quantification of corrosion is compared to scanning electron microscopy and electrochemical techniques, including open circuit potential and Tafel extrapolation. The corrosion rates calculated from PGSK-quenching and Tafel extrapolation are in agreement, and both indicate a decrease in corrosion rates over 24-hours. Our work shows PGSK can efficiently sense and quantify anodic corrosion reactions at metal interfaces, especially in organic solvents or other non-aqueous environments where the application of electrochemical techniques can be limited by the poor conductivity of the surrounding medium.

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Section: Introductionmentioning

confidence: 99%

A turn-off fluorescent sensor for metal ions quantifies corrosion in an organic solvent

Liu,

Pfaffenberger,

Seigel

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Fluorescent sensors, which are commonly used in biological, 39-41 medical, 42 and environmental sensing, 43 show potential application in corrosion detection but have not been used quantitatively. [44][45][46][47][48][49] Fluorescent sensors can probe corrosion either at a cathodic area by taking part in cathodic reductions or at an anodic area by responding to metal ions or pH change (Fig. 1a).…”

mentioning

confidence: 99%

A Turn-Off Fluorescent Sensor for Metal Ions Quantifies Corrosion in an Organic Solvent

Liu,

Pfaffenberger,

Siegel

et al. 2024

J. Electrochem. Soc.

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Single Molecule Microscopic Detection of Corrosion Reactions using “Turned-on” Fluorophores

Cited by 2 publications

References 6 publications

A turn-off fluorescent sensor for metal ions quantifies corrosion in an organic solvent

A turn-off fluorescent sensor for metal ions quantifies corrosion in an organic solvent

A Turn-Off Fluorescent Sensor for Metal Ions Quantifies Corrosion in an Organic Solvent

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