Planar and Curved π-Extended Porphyrins by On-Surface Cyclodehydrogenation
2024

Synthesis of New Porphyrins Using On-Surface Methods

publication Evidence: high

Author Information

Author(s): Baljozović Miloš, Pijeat Joffrey, Campidelli Stéphane, Ernst Karl-Heinz

Primary Institution: Molecular Surface Science Group, Empa, Dübendorf, Switzerland

Hypothesis

Can on-surface cyclodehydrogenation produce novel π-extended porphyrins?

Conclusion

The study successfully demonstrates the synthesis of new π-extended anthracenyl-containing porphyrins through temperature-controlled cyclodehydrogenation on a gold surface.

Supporting Evidence

  • Sequential dehydrogenation leads to the formation of fused anthracenyl porphyrin products.
  • At high molecular coverage, bowl-shaped porphyrins are formed.
  • The findings have potential applications in molecular catalysis and electronics.

Takeaway

Scientists found a new way to make special molecules called porphyrins by heating them on a gold surface, which can help in making better materials for electronics and energy.

Methodology

The synthesis involved temperature-controlled cyclodehydrogenation of bis- and tetraanthracenyl Zn(II) porphyrins on a gold(111) surface.

Limitations

The study may not account for all possible side reactions or impurities that could affect the synthesis.

Digital Object Identifier (DOI)

10.1021/jacs.4c12460

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