Related Experiment Video
Updated: Dec 21, 2025
09:28
Engineering Molecular Recognition with Bio-mimetic Polymers on Single Walled Carbon Nanotubes
Published on: January 10, 2017
8.4K
Cyclodextrin-Functionalised Nanomaterials for Enantiomeric Recognition.
Christopher Hobbs1, Pavel Řezanka2, Michal Řezanka1
1Department of Nanomaterials in Natural Sciences, Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, 461 17, Liberec, Czech Republic.
Chempluschem
|May 12, 2020
Summary
Nanomaterial-cyclodextrin conjugates enhance enantioseparation by increasing chiral selector concentration on surfaces. This improves enantioselectivity in chromatography and adsorption methods.
Area of Science:
- Chiral chemistry
- Materials science
- Analytical chemistry
Background:
- Cyclodextrins are naturally chiral selectors used in enantioseparation.
- Insufficient enantioselectivity is often caused by low surface concentrations of cyclodextrins.
- Nanomaterials offer large surface areas to increase chiral selector concentration.
Purpose of the Study:
- To outline nanomaterial-cyclodextrin conjugates for enhanced enantioselectivity.
- To explore various methods utilizing these conjugates for enantioseparation.
Main Methods:
- Conjugation of nanomaterials with cyclodextrins.
- Application in chromatographic separation techniques.
- Utilizing adsorption and magnetic nanoparticle removal.
- Employing electrochemical techniques for enantiorecognition.
Main Results:
- Nanomaterial-cyclodextrin conjugates significantly increase surface concentration of cyclodextrins.
- Enhanced enantioselectivity is achieved through synergistic effects.
- Versatile applications demonstrated across multiple separation and recognition techniques.
Conclusions:
- Nanomaterial-cyclodextrin conjugates offer a promising strategy to overcome limitations in enantioseparation.
- These conjugates provide a platform for developing highly efficient chiral selectors.
- The integration of nanomaterials with cyclodextrins broadens their applicability in chiral analysis.
Related Concept Videos
02:05Prochirality
4.7K
The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
4.7K
02:30Racemic Mixtures and the Resolution of Enantiomers
20.9K
A racemic mixture, or racemate, is an equimolar mixture of enantiomers of a molecule that can be separated using their unique interaction with chiral molecules or media. Racemic mixtures are denoted by the (±)- prefix. This ‘optical rotation descriptor’ applies to the whole solution of a racemic mixture rather than a specific stereoisomer. Enantiomers typically have the same physical and chemical properties. Hence, they are not easily separable. However, enantiomers can exhibit...
20.9K
02:24Properties of Enantiomers and Optical Activity
20.8K
It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...
20.8K
02:21Naming Enantiomers
25.0K
The naming of enantiomers employs the Cahn–Ingold–Prelog rules that involve assigning priorities to different substituent groups at a chiral center. Each enantiomer, being a distinct molecule, is assigned a unique name by the Cahn–Ingold–Prelog (CIP) rules, also called the R–S system. The prefix R- or S- attached to the chiral centers in an enantiomer is dependent on the spatial arrangement of the four substituents on the chiral center. The R–S system essentially comprises three...
25.0K
02:30Chirality at Nitrogen, Phosphorus, and Sulfur
6.7K
Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
6.7K
02:33Stereoisomerism of Cyclic Compounds
10.8K
In this lesson, we delve into the role of ring conformation and its stability, which determines the spatial arrangement and, consequently, the molecular symmetry and stereoisomerism of cyclic compounds. 1,2-Dimethylcyclohexane is used as a case study to evaluate the possible number of stereoisomers. Here, given the multiple (n = 2) chiral centers, there are 2n = 4 possible configurations that lack a plane of symmetry, as the ring skeleton exists in a non-planar chair conformation. In addition,...
10.8K