Synthesis and two-photon spectrum of a bis(porphyrin)-substituted squaraine

Susan A. Odom, Scott Webster, Lazaro A. Padilha, Davorin Peceli, Honghua Hu, Gero Nootz, Sung Jae Chung, Shino Ohira, Jonathan D. Matichak, Olga V. Przhonska, Alexei D. Kachkovski, Stephen Barlow, Jean Luc Brédas, Harry L. Anderson, David J. Hagan, Eric W. Van Stryland, Seth R. Marder