Bifunctional dendrimers: from robust synthesis and accelerated one-pot postfunctionalization strategy to potential...

Area of Science:

• Polymer Chemistry
• Supramolecular Chemistry
• Materials Science

Background:

• Dendrimers are highly branched macromolecules with unique properties.
• Bifunctional dendrimers offer versatile platforms for further chemical modifications.
• Developing efficient and chemoselective dendrimer synthesis is crucial for advanced applications.

Purpose of the Study:

• To construct two sets of AB(2)C dendrimers with specific internal and external functional groups.
• To demonstrate an in situ postfunctionalization strategy for these dendrimers.
• To explore the transformation of these dendrimers into nanoparticles and hydrogel crosslinkers.

Main Methods:

• Benign synthetic protocols were employed for dendrimer construction.
• An in situ postfunctionalization approach was utilized.
• Chemoselectivity of the dendrimer functionalization was investigated.
• Dendrimers were converted into dendritic nanoparticles and hydrogel crosslinkers.

Main Results:

• Two sets of bifunctional AB(2)C dendrimers with internal acetylene/azides and external hydroxy groups were successfully synthesized.
• The in situ postfunctionalization strategy effectively showcased the chemoselective nature of the dendrimers.
• The synthesized dendrimers were readily transformed into dendritic nanoparticles.
• These dendrimers proved effective as crosslinkers in hydrogel fabrication.

Conclusions:

• The developed dendrimers represent a versatile platform for advanced material design.
• The chemoselective in situ functionalization opens new avenues for precise molecular construction.
• These dendrimers hold significant potential for applications in nanotechnology and biomaterials.