Synthesis and Two-Photon Spectrum of a Bis(Porphyrin)-Substituted Squaraine

Odom SA; Webster S; Padilha LA; Peceli D; Hu H; Nootz G; Chung SJ; Ohira S; Matichak JD; Przhonska OV; Kachkovski AD; Barlow S; Bredas JL; Anderson HL; Hagan DJ; Van Stryland EW; Marder SR

Journal of the American Chemical Society, Vol.131, No.22, 7510-7510, 2009

Odom SA, Webster S, Padilha LA, Peceli D, Hu H, Nootz G, Chung SJ, Ohira S, Matichak JD, Przhonska OV, Kachkovski AD, Barlow S, Bredas JL, Anderson HL, Hagan DJ, Van Stryland EW, Marder SR

A chromophore in which zinc porphyrin donors are linked through their meso positions by ethynyl bridges to a bis(indolinylidenemethyl) squaraine core has been synthesized using Sonogashira coupling. The chromophore exhibits a two-photon absorption spectrum characterized by a peak cross section of 11000 GM and, more unusually, also exhibits a large cross section of >780 GM over a photon-wavelength window 750 nm in width.