Complex Hydride Purification
Complex Hydride Purification - Related Videos
11:30
Tandem Affinity Purification of Protein Complexes from Eukaryotic Cells
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Cited by 7 •
2017
We describe here a novel, robust, and efficient tandem affinity purification (TAP) method for the expression, isolation, and characterization of protein complexes from eukaryotic cells. This protocol could be utilized for the biochemical characterization of discrete complexes as well as the identification of novel interactors and post-translational modifications that regulate their function.
09:35
Purification and Visualization of Influenza A Viral Ribonucleoprotein Complexes
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Cited by 8 •
2009
The genome of the influenza A virus consists of eight separate complexes of RNA and proteins, termed viral ribonucleoprotein complexes (vRNPs). This paper describes the glycerol gradient purification and transmission electron microscopy visualization of influenza A vRNPs.
10:36
Purification of Native Complexes for Structural Study Using a Tandem Affinity Tag Method
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Cited by 4 •
2016
The Tandem Affinity Purification (TAP) method has been used extensively to isolate native complexes from cellular extract, primarily eukaryotic, for proteomics. Here, we present a TAP method protocol optimized for purification of native complexes for structural studies.
08:44
Generation and Purification of Human INO80 Chromatin Remodeling Complexes and Subcomplexes
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Cited by 8 •
2014
This protocol describes a procedure for generating and purifying wild type and mutant versions of the human INO80 chromatin remodeling complex. Epitope tagged versions of INO80 subunits are stably expressed in HEK293 cells, and complete complexes and complexes lacking specific sets of subunits are purified by immunoaffinity chromatography.
09:05
Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
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Cited by 9 •
2015
Nitrogen is an effective supercritical fluid for extraction or drying processes due to its small molecular size, high density in the near-liquid supercritical regime, and chemical inertness. We present a supercritical nitrogen drying protocol for the purification treatment of reactive, porous materials.
FAQs
Purification succeeds when the target hydride and impurities respond differently to the chosen conditions. Solubility differences can place the desired compound in solution while unwanted material remains separate for filtration. Phase behavior helps distinguish solid forms, whereas reactivity and thermal stability determine whether a treatment preserves composition rather than generating decomposition products. This selectivity guides the purification sequence and improves reproducibility.
Thermal stability determines which purification conditions the material can tolerate. A treatment may separate phases effectively yet damage the target if heating promotes decomposition or changes hydride composition. For that reason, controlled drying is paired with the separation strategy, and an inert atmosphere helps limit exposure during handling. Preserving the original chemical form is essential for reproducible measurements.
Residual salts, unreacted reagents, solvent, and decomposition products are not merely cosmetic impurities. They can change the apparent composition of the isolated hydride and influence measured performance. Removing them is therefore part of establishing a chemically defined sample, especially when comparing hydrogen-storage behavior, reduction chemistry, ionic conductivity, or solid-state transformations across experiments.
A practical sequence begins by selectively dissolving the synthesis mixture under conditions that favor the target hydride. Insoluble material can then be removed by filtration, while washing reduces adhering impurities. If needed, recrystallization further separates the desired phase from soluble contaminants. The recovered solid is finally dried in a controlled inert environment, limiting retained solvent and unwanted chemical changes.
These operations address different purification problems. Washing removes impurities that remain attached to the separated solid, while recrystallization exploits differences in solubility and phase behavior to improve chemical definition. Controlled drying removes residual solvent without relying on harsh conditions, and an inert atmosphere supports handling of materials sensitive to air or moisture. Together, they protect composition and sample quality.
Purified complex hydrides provide more reliable samples for studying hydrogen storage, chemical reduction, ionic conductivity, and solid-state transformations. Lower levels of residual salts, reagents, solvent, and decomposition products make it easier to associate an observed result with the intended hydride rather than with contaminants. This improves reproducibility and supports safer handling of air- or moisture-sensitive materials.