Superatomic-Based Ion-π Interactions

Area of Science:

• Physical Chemistry
• Materials Science
• Computational Chemistry

Background:

• Atomic-based ion-π interactions (A-IPIs) are crucial in molecular recognition, catalysis, and materials assembly.
• Limited elemental variety restricts the tunability of traditional A-IPIs.

Purpose of the Study:

• To introduce and investigate superatomic-based ion-π interactions (S-IPIs) using superatoms instead of atoms.
• To explore the potential of S-IPIs for expanding the scope of ion-π interactions.

Main Methods:

• First-principles calculations were employed to study S-IPIs.
• Superatoms were modeled interacting with graphene fragments as substrates.

Main Results:

• Superatoms maintain structural stability and exhibit electronegativity-driven charge transfer in S-IPIs, analogous to A-IPIs.
• Interaction strength and chemical reactivity of S-IPI complexes are tunable by modifying superatom type and electronic configuration.
• S-IPIs effectively expand the traditional ion-π interaction paradigm.

Conclusions:

• S-IPIs offer a novel approach to designing and tuning ion-π interactions.
• This work paves the way for fundamental research and applications utilizing artificial elemental superatoms in ion-π systems.