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Related Concept Videos

Prochirality02:05

Prochirality

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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...
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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.
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Chirality02:25

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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...
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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...
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Learning to draw Fischer projections of molecules and understanding their relevance plays a crucial role in the visual depiction of organic molecules. A Fischer projection is a two-dimensional projection on a planar surface to simplify the three-dimensional wedge–dash representation of molecules. This is especially helpful in the case of molecules with multiple chiral centers that can be difficult to draw. Here, all the bonds of interest are represented as horizontal or vertical lines.
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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.
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Tuning the Chiral Structures from Self-Assembled Carbohydrate Derivatives.

Yawen Yao1,2, Xintong Meng1, Cheng Li1

  • 1Sustainable Materials and Chemistry, Department of Wood Technology and Wood-Based Composites, University of Göttingen, Büsgenweg 4, 37077, Göttingen, Germany.

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Carbohydrate chirality is key for self-assembly into advanced materials. This review explores how molecular design and assembly methods control supermolecular structures and properties.

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Area of Science:

  • Supramolecular Chemistry
  • Carbohydrate Chemistry
  • Materials Science

Background:

  • Carbohydrates are ideal for chirality studies due to their structure, abundance, and sustainability.
  • Significant research exists on synthesizing carbohydrate derivatives and their self-assembly into various supermolecular structures.
  • A deeper understanding of structure-property relationships in carbohydrate self-assembly is needed.

Purpose of the Study:

  • To comprehensively review recent studies on carbohydrate chirality and self-assembly.
  • To elucidate how molecular design and assembly strategies influence final morphologies and properties.
  • To guide future research in tuning carbohydrate-based chiral materials.

Main Methods:

  • Review and synthesis of recent literature on carbohydrate chirality.
  • Analysis of molecular design principles for chirality control.
  • Discussion of self-assembly approaches for superstructural chirality expression.

Main Results:

  • Carbohydrate structure significantly impacts self-assembled morphology and properties.
  • Chirality transfer and expression are crucial for developing chiral supramolecular systems.
  • Effective molecular design and appropriate self-assembly methods are essential for targeted outcomes.

Conclusions:

  • Understanding carbohydrate structure-assembly-property relationships is vital for advanced materials.
  • Strategic molecular design and self-assembly techniques enable precise control over chirality in supramolecular systems.
  • This review provides insights for developing novel carbohydrate-based chiral materials for future applications.