Ligand Architecture Control Geometry, Self-Sorting, and Postsynthetic Modification in Anthracene-Based Organometallic...

Area of Science:

• Organometallic Chemistry
• Supramolecular Chemistry
• Materials Science

Background:

• Limited approaches exist for organometallic cluster-based assemblies.
• Organic ligands are crucial for structural diversity in metallasupramolecular assemblies.
• Anthracene-based ligands offer potential for novel assembly architectures.

Purpose of the Study:

• To investigate how anthracene ligand architecture dictates organometallic cluster assembly structure and properties.
• To explore the synthesis of diverse supramolecular architectures using Pt3-cluster nodes and anthracene ligands.
• To understand the influence of ligand design on postsynthetic modification and self-sorting behaviors.

Main Methods:

• Synthesis of cubic, cylindric, self-penetrated, and triple helicate assemblies using Pt3-cluster nodes and anthracene ligands (L1-L3).
• Tuning coordination parameters and noncovalent interactions (π-π stacking, C-H···π) to control assembly formation.
• Investigating postsynthetic modification (PSM) reactivity and self-sorting behaviors of the synthesized assemblies.

Main Results:

• Selective synthesis of (Tr2Pt3)8L12-type cubic and cylindric assemblies by varying ligand coordination and noncovalent interactions.
• Formation of an unprecedented (Tr2Pt3)2L3-type self-penetrated assembly and a triple helicate assembly through controlled π-π stacking.
• Demonstration of selective PSM reactivity in the triple helicate assembly and distinct self-sorting behaviors based on ligand modifications.

Conclusions:

• Ligand architecture is a critical factor in designing and controlling the structure and properties of organometallic cluster-based assemblies.
• Anthracene-based ligands enable the construction of diverse supramolecular architectures with tunable properties.
• The findings provide valuable design principles for future development of novel organometallic supramolecular systems.