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Related Concept Videos

Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
High-Performance Liquid Chromatography: Introduction01:11

High-Performance Liquid Chromatography: Introduction

High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
Chirality02:25

Chirality

Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
Types Of Column Chromatography01:29

Types Of Column Chromatography

The stability and compatibility of column material with samples are crucial for efficient purification in chromatographic techniques. Various operating parameters such as pH, temperature, or solvent affect the packing of the column material, thereby determining the purification efficiency. The choice of column material also plays an essential role in deciding the operating parameters and can be modified based on the proteins that need to be purified.
Gel Filtration Chromatography
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Silica Gel Column Chromatography: Overview01:10

Silica Gel Column Chromatography: Overview

Silica gel column chromatography is a technique for separating compounds using a column packed with silica gel as the stationary phase. This method relies on differences in the polarity of compounds. Based on their polarities, compounds move between the stationary phase (silica gel) and the mobile phase (the solvent), forming discrete bands in the column.
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Supercritical Fluid Chromatography01:18

Supercritical Fluid Chromatography

Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
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Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification
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Published on: September 21, 2011

Chiral ice chromatography.

Taiki Shamoto1, Yuiko Tasaki, Tetsuo Okada

  • 1Department of Chemistry, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551, Japan.

Journal of the American Chemical Society
|September 10, 2010
PubMed
Summary

This study introduces a novel method for separating enantiomers using doped water-ice particles, enhancing chiral recognition without complex synthesis. This breakthrough offers a simpler approach to chiral separation in scientific research.

Area of Science:

  • Analytical Chemistry
  • Physical Chemistry
  • Materials Science

Background:

  • Chiral separation is crucial in pharmaceuticals and chemical synthesis.
  • Existing methods often require complex synthetic procedures or harsh conditions.
  • Developing efficient and environmentally friendly chiral separation techniques remains a challenge.

Purpose of the Study:

  • To develop a novel, non-synthetic method for enantiomeric separation.
  • To investigate the role of doped water-ice particles in chiral recognition.
  • To explore the simultaneous presence of solid-ice and liquid-water phases in separation.

Main Methods:

  • Simultaneous doping of water-ice particles with beta-cyclodextrin and a salt.
  • Utilizing the coexistent solid-ice and liquid-water phases for chromatography.

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  • Analyzing the separation efficiency and chiral recognition capabilities.

    • Main Results:

    • Achieved chromatographic separation of enantiomers without synthetic processes.
    • Demonstrated enhanced chiral recognition within the doped water-ice system.
    • Observed effective separation in the unique coexistent phase environment.

    Conclusions:

    • Water-ice particles doped with beta-cyclodextrin and salt provide an effective platform for enantiomeric separation.
    • The coexistent solid-ice and liquid-water phases are key to enhanced chiral recognition.
    • This method presents a simplified, non-synthetic approach to chiral separations.