A Janus carbaporphyrin pseudo-dimer.

Area of Science:

• Porphyrin Chemistry
• Supramolecular Chemistry
• Materials Science

Background:

• Carbaporphyrin dimers typically feature identical subunits, limiting exploration of asymmetric systems.
• Asymmetric carbaporphyrin dimers with Janus-like characteristics remain underexplored.
• Understanding electronic and coordination properties of asymmetric systems is crucial for novel applications.

Purpose of the Study:

• To synthesize and characterize a Janus-type carbaporphyrin pseudo-dimer.
• To investigate its unique electronic properties, including antiaromatic and nonaromatic behaviors.
• To explore its potential for site-specific heterometallic complex formation.

Main Methods:

• Synthesis of a novel Janus-type carbaporphyrin pseudo-dimer.
• Preparation of tetraphenylene (TPE) and dibenzo[g,p]chrysene (DBC) linked controls.
• Characterization using 1H NMR, single crystal X-ray diffraction, and DFT calculations.

Main Results:

• Successful synthesis of the Janus-type carbaporphyrin pseudo-dimer (5).
• Validation of mixed antiaromatic and nonaromatic characteristics through comprehensive analyses.
• Demonstration of regioselective heterometallic complex formation with Cu(III) and BODIPY.

Conclusions:

• Asymmetric carbaporphyrin dimers exhibit distinct electronic properties and regiochemical reactivity.
• These Janus-like structures serve as versatile platforms for controlling electronic features and coordination.
• Findings suggest significant potential for carbaporphyrin dimers in electronic structure studies, coordination chemistry, and materials science.