Oxygen Sensitive Compounds
Oxygen Sensitive Compounds - Related Videos
02:38
Molecules and Compounds
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2020
Atoms and Molecules Everything in the universe is made up of matter, and matter is composed of a combination of elements. An atom is the smallest unit of an element that retains all properties of the element. For example, a silver coin is made up of silver atoms, and each silver atom retains the unique properties of the element — silver. Elements are pure substances consisting of identical atoms that cannot be broken down into simpler substances by chemical changes. Atomic elements contain...
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.
03:02
Organic Compounds
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2020
All living things are formed mostly of carbon compounds called organic compounds. The category of organic compounds includes both natural and synthetic compounds that contain carbon. Although a single, precise definition has yet to be identified by the chemistry community, most agree that a defining trait of organic molecules is the presence of carbon as the principal element, bonded to hydrogen and other carbon atoms. However, some carbon-containing compounds such as carbonates, cyanides, and...
09:38
Compound Administration II
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2016
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN Compound administration is often an integral component of an animal study. Many factors need to be evaluated to ensure that the compound is delivered correctly. The route of administration affects the mechanisms of absorption. The characteristics of the substance to be introduced (the pH, viscosity, and concentration) may dictate which route of administration is selected.
09:08
Detecting Reactive Oxygen Species
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2023
Reactive oxygen species are chemically active, oxygen-derived molecules capable of oxidizing other molecules. Because of their reactive nature, there are many deleterious effects associated with unchecked ROS production, including structural damage to DNA and other biological molecules. However, ROS can also be mediators of physiological signaling. There is accumulating evidence that ROS play significant roles in everything from activation of transcription factors to the mediation of...
FAQs
Oxygen can drive electron-transfer reactions or radical pathways that change a compound’s oxidation state, break chemical bonds, or form reactive degradation products. These changes may modify the substance’s composition and reactivity rather than merely contaminating its surface. Identifying the pathway helps chemists understand why oxygen exposure can disrupt a reaction or compromise the resulting material.
Small amounts of oxygen can initiate chemical changes in highly reactive compounds, producing degradation products or shifting oxidation states. In practical research, those changes may reduce reaction yields, impair catalyst performance, or alter material properties. Consequently, oxygen control is not only a storage concern; it can determine whether an experiment remains reproducible and whether its intended product retains the expected behavior.
The two pathways describe different ways oxygen can initiate degradation. Electron transfer changes the distribution of electrons and can shift oxidation states, whereas radical pathways involve reactive species that may promote bond cleavage or further chemical reactions. Distinguishing them provides a framework for interpreting composition changes and for connecting observed degradation products with the underlying oxidation mechanism.
Gloveboxes and Schlenk techniques are used to limit contact between oxygen-sensitive compounds and air. They support manipulation and storage under inert gases such as nitrogen or argon, reducing the opportunity for oxygen-driven oxidation. Selecting controlled-atmosphere handling is especially important when trace exposure could change a compound’s composition, reaction yield, catalyst performance, or material properties.
Their controlled handling is important in organometallic synthesis, redox chemistry, catalysis, and materials research. In organometallic and redox studies, oxygen exposure can change oxidation states or generate degradation products. In catalysis and materials work, the same exposure may alter catalyst performance or material properties, making oxygen exclusion central to reliable preparation and evaluation.
These compounds provide a way to examine how oxygen participates in oxidation and degradation. Researchers can relate changes in composition, oxidation state, bond structure, or reactive products to electron-transfer or radical pathways. That mechanistic information supports safer and more reproducible laboratory procedures while also clarifying why oxygen contamination produces different outcomes across synthesis, catalysis, and materials research.