Air-sensitive Materials
Air-sensitive Materials - Related Videos
10:18
Exfoliation and Analysis of Large-area, Air-Sensitive Two-Dimensional Materials
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Cited by 8 •
2019
A method for exfoliating large thin flakes of air sensitive two-dimensional materials and safely transporting them for analysis outside of a glovebox is presented.
07:05
Handling Air- and Water-Sensitive Chemicals Using a Schlenk Line
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2023
Robert M Rioux, Ajay Sathe, Zhifeng Chen, Pennsylvania State University, University Park, PA The use of reagents sensitive to oxidation or moisture necessitates the use of air-free techniques. A Schlenk line is a routinely used glass apparatus to perform air and moisture free manipulations in a chemical laboratory1. The Schlenk line is widely utilized by many chemists since it allows them conduct air or water sensitive reactions even without the expense and restriction of a glove box. The...
07:44
Characterization of Full Set Material Constants and Their Temperature Dependence for Piezoelectric Materials Using Resonant Ultrasound Spectroscopy
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Cited by 8 •
2016
This protocol describes the procedure of measuring the temperature dependence of the full set material constants of piezoelectric materials using resonant ultrasound spectroscopy (RUS).
11:23
Material Constants
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2023
Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA In contrast to the production of cars or toasters, where millions of identical copies are made and extensive prototype testing is possible, each civil engineering structure is unique and very expensive to reproduce (Fig.1). Therefore, civil engineers must extensively rely on analytical modeling to design their structures. These models are simplified abstractions of reality and are used to...
10:30
Dye-sensitized Solar Cells
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2023
Source: Tamara M. Powers, Department of Chemistry, Texas A&M University Today's modern world requires the use of a large amount of energy. While we harness energy from fossil fuels such as coal and oil, these sources are nonrenewable and thus the supply is limited. To maintain our global lifestyle, we must extract energy from renewable sources. The most promising renewable source, in terms of abundance, is the sun, which provides us with more than enough solar energy to fully fuel our...
FAQs
The main degradation routes are oxidation and hydrolysis. Oxygen can alter a material through oxidation, while moisture can promote hydrolysis, changing the substance’s composition or reactivity. These pathways explain why exposure is not merely a storage concern: contact with air can compromise a reagent’s intended chemical behavior and make subsequent synthetic results or characterization less reliable.
Dry inert-gas atmospheres reduce contact with the oxygen and moisture that can initiate unwanted reactions. The atmosphere therefore acts as a protective chemical environment, helping preserve both composition and reactivity during handling. This control is especially important when a material must remain suitable for a later synthetic reaction, accurate characterization, or reproducible comparison between experiments.
These approaches provide different ways to isolate air-sensitive materials from damaging components of air. Gloveboxes support handling within a controlled atmosphere, while sealed vessels limit exposure by enclosing the material, and Schlenk techniques provide another controlled method for manipulation. Their shared purpose is preservation; the appropriate choice depends on the handling and transfer requirements of the experiment.
A controlled workflow must protect the material during storage, transfer, and use, not only during the reaction itself. Chemists select an appropriate isolation method, such as a dry inert-gas atmosphere, sealed vessel, glovebox, or Schlenk technique, and maintain that protection across relevant handling stages. Consistency in these steps supports preservation of composition and reactivity.
They are particularly important when synthetic chemistry uses reactive organometallic compounds or catalysts. For these materials, exposure control helps retain the chemical properties needed for the intended reaction. Careful storage and transfer also improve reproducibility, because the material entering an experiment is more likely to retain the composition and reactivity expected by the procedure.
Careful management supports several outcomes at once: reproducible reactions, accurate characterization, safer laboratory practice, and more reliable preparation or scaling of reactive materials. Researchers can use controlled isolation during storage and transfer, then apply the material in synthesis or catalyst-related work with greater confidence. Understanding its sensitivity also helps shape procedures that account for reactivity throughout the experiment.