Air Sensitive Synthesis
Air Sensitive Synthesis - Related Videos
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...
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.
06:50
Synthesis Of A Ti(III) Metallocene Using Schlenk Line Technique
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2023
Source: Tamara M. Powers, Department of Chemistry, Texas A&M University Inorganic chemists often work with highly air- and water-sensitive compounds. The two most common and practical methods for air-free synthesis utilize either Schlenk lines or gloveboxes. This experiment will demonstrate how to perform simple manipulations on a Schlenk line with a focus on solvent preparation and transfer. Through the synthesis of a reactive Ti(III) metallocene complex, we will demonstrate a new, simple...
08:33
Hydrogel Synthesis
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2023
Source: Amber N. Barron, Ashlea Patterson, and Taylor D. Sparks, Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT Hydrogels are a versatile class of cross-linked polymers produced through relatively simple procedures and with generally inexpensive materials. They can be formed from solution and involve a polymer backbone formed from monomer reagents, an initiator which makes the polymer reactive and a crosslinking species which binds the polymer chains...
09:42
Solid Phase Synthesis
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2023
Source: Vy M. Dong and Diane Le, Department of Chemistry, University of California, Irvine, CA Merrifield's solid-phase synthesis is a Nobel Prize winning invention where a reactant molecule is bound on a solid support and undergoes successive chemical reactions to form a desired compound. When the molecules are bound to a solid support, excess reagents and byproducts can be removed by washing away the impurities, while the target compound remains bound to the resin. Specifically, we will...
FAQs
An inert atmosphere limits contact between the reaction mixture and oxygen, moisture, or other reactive components of air. This protection matters because exposure can cause decomposition or unwanted side reactions, reducing the reliability of the preparation. Maintaining controlled conditions therefore preserves the intended reactivity of sensitive compounds and helps chemists obtain more reproducible results.
Dry solvents, sealed vessels, and careful transfer techniques address different opportunities for air exposure. Solvent dryness reduces the moisture introduced into a reaction, while sealed vessels limit exchange with surrounding air. Controlled transfers help preserve that protection when compounds or solutions move between containers. Together, these practices support consistent reaction conditions and reduce decomposition or competing side reactions.
Gloveboxes and Schlenk lines provide practical environments for maintaining an inert atmosphere during preparation and handling. The key requirement is not the name of the equipment but the exclusion of oxygen and moisture throughout the operation. Using either setup allows chemists to work with reactive materials while preserving the controlled conditions needed for reliable synthesis and reproducible product quality.
Protection must continue during transfers because sensitive compounds can encounter oxygen or moisture even after a reaction has been prepared under controlled conditions. Careful movement between containers helps maintain the established atmosphere and prevents newly introduced air or water from triggering decomposition or unwanted reactions. This makes transfer technique an important part of overall process control, rather than a separate final step.
A typical workflow begins by establishing an inert working environment, preparing dry solvents, and using vessels that can remain sealed. Chemists then transfer reagents carefully while minimizing exposure to air and water, carrying the same precautions through reaction and handling. This coordinated sequence matters because uncontrolled exposure at any stage can undermine the intended conditions and final reproducibility.
This approach is especially useful for reactive organometallic compounds, catalysts, reducing agents, and other sensitive intermediates. These materials may not retain their intended properties when exposed to oxygen or moisture, so controlled handling supports their preparation and use. The resulting control is valuable when the desired product depends on preserving a narrowly defined chemical reactivity.
Air sensitive synthesis contributes to organic, inorganic, and materials chemistry by allowing researchers to control reactivity during the preparation of sensitive compounds. Such control improves product quality and reproducibility, which are important when studying reactive intermediates, catalysts, reducing agents, or material-related chemical systems. Its broader value lies in connecting careful handling conditions with dependable experimental outcomes.