A Quadruply Azulene‐Fused Porphyrin with Intense Near‐IR Absorption and a Large Two‐Photon Absorption Cross Section

Abstract

Extending conjugation: Azulene-fused porphyrins (see example) are synthesized through the oxidation of meso-(4-azulenyl)porphyrins with FeCl3. The azulene-fused strategy allowed highly π-conjugated porphyrinic electronic systems, which are promising two-photon absorption pigments, to be realized. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2006/z600892_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.