Effective Expansion of the Subporphyrin Chromophore Through Conjugation with <i>meso</i>‐Oligo(1,4‐phenyleneethynylene) Substituents: Octupolar Effect on Two‐Photon Absorption

Abstract

Go with the glow: A series of meso-oligo(1,4-phenyleneethynylene) substituted subporphyrins shows a significant amplification in absorption coefficient and fluorescence quantum yield as the chain length of the substituents increases (see picture). Particularly, enhancement of the two-photon absorption properties along the series can be characterized by an octupolar effect rather than a conjugation effect. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2008/z801192_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.