Modular Synthetic Platform for Interior-Functionalized Dendritic Macromolecules Enabled by the Palladium/Norbornene...

Area of Science:

• Macromolecular Science
• Organic Chemistry
• Materials Science

Background:

• Interior-functionalized dendritic macromolecules synthesis is complex and time-consuming.
• This complexity hinders the widespread application of these advanced materials.
• Existing methods often lack modularity and efficiency.

Purpose of the Study:

• To develop a streamlined and modular platform for synthesizing interior-functionalized dendrons.
• To enable the introduction of diverse functional groups at specific generations during dendron growth.
• To facilitate systematic studies on structure-property relationships in dendrons.

Main Methods:

• A modular and convergent synthesis platform was designed.
• Palladium/norbornene cooperative catalysis was employed for *in situ* functionalization.
• Dendrons with all-carbon backbones up to four generations were constructed.
• The platform allowed introducing different functional groups during dendron growth.

Main Results:

• A versatile platform for synthesizing multifunctional dendrons was successfully established.
• The *in situ* functionalization strategy simplified the introduction of diverse chemical moieties.
• Systematic property comparisons were enabled by the controlled functionalization.
• Dendrons synthesized via this platform demonstrated utility in organogel and aggregation-induced emission applications.

Conclusions:

• The developed platform offers a significant advancement in dendron synthesis, overcoming previous limitations.
• This approach facilitates the creation of precisely functionalized dendrons for tailored material properties.
• The methodology is valuable for exploring structure-dependent behaviors in dendrimers and related macromolecules.