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Related Concept Videos

Chirality in Nature02:30

Chirality in Nature

Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a snail shell pattern in a macroscopic world to an amino acid, the minutest building block of life. Most of the snails around the world have right-coiled shells because of the intrinsic chirality in their genes. All the amino acids present in the human body exist in an enantiomerically pure state, except for glycine - the sole achiral amino acid. The...
Prochirality02:05

Prochirality

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...
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...
Molecules with Multiple Chiral Centers02:25

Molecules with Multiple Chiral Centers

Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one chiral center, defined as a tetrahedral carbon atom with four different substituents attached, several molecules like butane-2,3-diol have multiple chiral centers. A simple formula to predict the number of stereoisomers possible for a molecule with n chiral centers is 2n. However, there can be a lower number where some of the stereoisomers are...
Chirality at Nitrogen, Phosphorus, and Sulfur02:30

Chirality at Nitrogen, Phosphorus, and Sulfur

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...
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Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration

The rate of acid-catalyzed hydration of alkenes depends on the alkene's structure, as the presence of alkyl substituents at the double bond can significantly influence the rate.

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Updated: May 12, 2026

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
16:24

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Published on: August 2, 2012

Chiral induction and amplification in supramolecular systems at the liquid-solid interface.

Hong Xu1, Elke Ghijsens, Subi J George

  • 1Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven-University of Leuven, Celestijnenlaan 200 F, B-3001, Leuven, Belgium.

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry
|April 9, 2013
PubMed
Summary
This summary is machine-generated.

Achiral molecules form chiral patterns on surfaces using chiral solvents or a new amplification technique. This research shows these methods effectively create chiral supramolecular monolayers at liquid-solid interfaces.

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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
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Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy
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Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy

Published on: August 13, 2019

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Last Updated: May 12, 2026

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
16:24

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Published on: August 2, 2012

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
06:35

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

Published on: February 15, 2016

Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy
09:43

Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy

Published on: August 13, 2019

Area of Science:

  • Supramolecular Chemistry
  • Surface Science
  • Chirality Studies

Background:

  • Chiral induction and amplification are crucial in creating specific molecular arrangements.
  • Surface-confined supramolecular assemblies offer unique platforms for studying chiral phenomena.
  • Previous methods for chiral induction were primarily applied to solutions and polymers.

Purpose of the Study:

  • To investigate chiral induction and amplification in surface-confined supramolecular monolayers.
  • To demonstrate the formation of globally chiral patterns from achiral molecules at the liquid-solid interface.
  • To adapt and validate methods for chiral induction and amplification at interfaces.

Main Methods:

  • Utilizing scanning tunneling microscopy (STM) to visualize molecular self-assembly.
  • Employing chiral solvents for direct chiral induction.
  • Developing and applying a novel chiral amplification method.
  • Investigating self-assembly at the liquid-solid interface.

Main Results:

  • Achiral molecules successfully self-assembled into globally chiral patterns.
  • Both chiral solvent induction and the novel chiral amplification method were effective.
  • Demonstrated the feasibility of creating chiral supramolecular monolayers at the liquid-solid interface.
  • STM confirmed the formation of well-defined chiral structures.

Conclusions:

  • Chiral induction and amplification are viable strategies for creating chiral supramolecular monolayers at liquid-solid interfaces.
  • The study validates the transferability of solution-based chiral techniques to surface-confined systems.
  • This work opens avenues for designing and controlling chirality in interfacial molecular assemblies.