Triethylamine Quench
Triethylamine Quench - Related Videos
10:57
Quenching and Boiling
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2023
Source: Alexander S Rattner, Sanjay Adhikari, and Mahdi Nabil; Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA Controlled heating followed by rapid cooling is an important element of many materials processing applications. This heat-treating procedure can increase material hardness, which is important for cutting tools or surfaces in high wear environments. The rapid cooling stage is called quenching, and is often performed by immersing...
07:47
Anti-virulent Disruption of Pathogenic Biofilms using Engineered Quorum-quenching Lactonases
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Cited by 7 •
2016
Quorum-quenching enzymes are anti-virulent and anti-bacterial options that can mitigate pathogenesis without risk of incurring resistance, by preventing the expression of virulence factors and genes associated with antibiotic resistance and biofilm formation. In this study, we report a method that demonstrates the efficacy of quorum-quenching enzymes in bacterial biofilm disruption.
08:58
Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence
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Cited by 28 •
2011
We present an experimental procedure for measuring the partial pressure of oxygen (pO2) in cerebral vasculature based on oxygen-dependent quenching of phosphorescence. Animal preparation and imaging procedures were outlined for both large field of view CCD-based imaging of pO2 in rats and 2-photon excitation based imaging of pO2 in mice.
08:07
Sample Preparation for Single Cell Mass Spectrometry Metabolomics Studies: Combined Cell Washing, Quenching, Drying, and Storage
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Cited by 1 •
2025
This protocol aims to preserve cell metabolites for single-cell mass spectrometry (SCMS) by combining volatile salt solution washing, rapid liquid nitrogen quenching, freeze-drying, and −8 °C storage. It demonstrates that liquid nitrogen quenching is essential for maintaining metabolite profiles, while prolonged cold storage should be minimized to prevent metabolic alterations.
10:55
Fluorescence-quenching of a Liposomal-encapsulated Near-infrared Fluorophore as a Tool for In Vivo Optical Imaging
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Cited by 15 •
2015
The use of fluorophores for in vivo imaging can be greatly limited by opsonization, rapid clearance, low detection sensitivity and cytotoxic effects on the host. Encapsulation of fluorophores in liposomes by film hydration and extrusion leads to fluorescence quenching and protection which enables in vivo imaging with high detection sensitivity.
FAQs
The key chemical event is proton transfer: triethylamine accepts protons from acidic species and becomes triethylammonium, forming a salt. This lowers the concentration of acid and other proton-sensitive reactive components. The practical result is a controllable reduction in acid-driven reactivity, allowing selected synthetic reactions or residual acidity to be brought under control.
Triethylamine combines proton acceptance with non-nucleophilic behavior, making its role primarily that of a base rather than a reagent selected to participate through nucleophilic reaction. This distinction matters when chemists need to reduce acidity or neutralize reactive intermediates while limiting additional reaction pathways. Its tertiary amine structure supports this controlled acid-neutralization function.
The amount added and the way it is mixed determine how effectively acidic species are neutralized and how uniformly conditions change throughout the reaction mixture. An insufficient quantity may leave residual acidity, whereas poorly controlled mixing can produce uneven local conditions. Careful selection of quantity and mixing conditions therefore supports reproducible quenching and product protection.
A controlled workflow includes selecting an appropriate quantity, introducing triethylamine under suitable mixing conditions, and maintaining conditions that limit unnecessary exposure of the product to reactive acidity. The process should then account for the resulting triethylammonium salts and remaining reagent during workup and waste handling. Ventilation and controlled operation are essential because the reagent is volatile and flammable.
This approach is useful when a selected synthetic reaction must be terminated, when residual acidity needs neutralization during workup, or when a product could be damaged by prolonged exposure to acidic conditions. It is especially relevant for protecting base-sensitive products after the desired transformation has reached its intended endpoint or during isolation-related operations.
Triethylamine’s volatility and flammability make ventilation, controlled quantities, appropriate mixing, and suitable waste procedures central to the operation. These controls reduce handling risks while also improving reproducibility. Chemists must consider both the added reagent and the triethylammonium salts formed during neutralization, ensuring that the reaction mixture and waste stream receive appropriate treatment.