Dimeric capsules self-assembled through halogen and chalcogen bonding

Author(s): Yu-Jie Zhu ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Ya Gao ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Min-Min Tang ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Julius Rebek ⁶ ^, ⁷ ^, ⁸ ^, ⁹ , Yang Yu ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵

Publication date (Electronic): 2021

Journal: Chemical Communications

Publisher: Royal Society of Chemistry (RSC)

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Abstract

Supramolecular capsules are nanoscale containers useful for the study of molecular behavior in confined spaces.

Abstract

Supramolecular capsules are nanoscale containers useful for the study of molecular behavior in confined spaces. They offer practical applications in catalysis, molecular transport, drug delivery, and materials science. Self-assembly has proven to be an effective approach in constructing supramolecular capsules and a variety of well-known noncovalent interactions including hydrogen bonding, metal coordination and ionic interactions have been deployed. Bowl-shaped cavitand structures built up from resorcinarenes have particular advantages for the construction of supramolecular capsules, and this highlight discusses the unconventional self-assembly of molecular capsules held together by halogen and chalcogen bonds.

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The Halogen Bond

Gabriella Cavallo, Pierangelo Metrangolo, Roberto Milani … (2016)

The halogen bond occurs when there is evidence of a net attractive interaction between an electrophilic region associated with a halogen atom in a molecular entity and a nucleophilic region in another, or the same, molecular entity. In this fairly extensive review, after a brief history of the interaction, we will provide the reader with a snapshot of where the research on the halogen bond is now, and, perhaps, where it is going. The specific advantages brought up by a design based on the use of the halogen bond will be demonstrated in quite different fields spanning from material sciences to biomolecular recognition and drug design.

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Definition of the halogen bond (IUPAC Recommendations 2013)

Gautam Desiraju, P. Ho, Lars Kloo … (2013)

This recommendation proposes a definition for the term “halogen bond”, which designates a specific subset of the inter- and intramolecular interactions involving a halogen atom in a molecular entity.