Related Experiment Video
Updated: Jun 24, 2026

08:01
Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand
Published on: September 8, 2016
Enantioselective crystallization on nanochiral surfaces
1Department of Chemistry, Institute of Nanotechnology, Bar-Ilan University, Ramat-Gan 52900, Israel. mastai@mail.biu.ac.il
Chemical Society Reviews
|March 27, 2009
Summary
Chiral nanostructured surfaces enable advances in stereoselective synthesis and chiral compound separation. This review highlights enantioselective crystallization and nanoscale chirality characterization using polarized near-field scanning optical microscopy (NSOM).
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Chiral nanostructured crystalline surfaces are crucial for stereoselective synthesis, chiral compound separation, and advanced optical/electronic devices.
- These surfaces have garnered significant attention in recent years for their diverse applications.
- Nanotechnology relies heavily on the unique properties of these materials.
Purpose of the Study:
- To provide an overview of nanochiral surfaces.
- To emphasize recent advances in enantioselective crystallization on these surfaces.
- To introduce polarized near-field scanning optical microscopy (NSOM) for nanoscale chirality studies.
Main Methods:
- Review of existing literature on nanochiral surfaces.
- Focus on enantioselective crystallization techniques.
- Introduction and application of polarized near-field scanning optical microscopy (NSOM).
Main Results:
- Demonstration of enantioselective crystallization on nanostructured chiral surfaces.
- Characterization of nanochiral surfaces using various techniques.
- Successful application of polarized NSOM for nanoscale chirality investigation.
Conclusions:
- Nanochiral surfaces offer significant potential in chemical synthesis and materials science.
- Enantioselective crystallization is a key application area.
- Polarized NSOM is a promising new technique for nanoscale chiral analysis.
Related Concept Videos
Colloidal precipitates
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
Recrystallization: Solid–Solution Equilibria
Recrystallization is a purification technique used to separate impurities from solid compounds. In this technique, no chemical reactions occur. Instead, it exploits physical properties only, specifically, the solubility differences between the desired compound and impurities, either at a single temperature or at different temperatures, and under other selected conditions. The solid-solution equilibrium (solubility equilibrium) of each component in the solution represents a binary phase...
Crystal Growth: Principles of Crystallization
Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent – the...
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent – the...

