Synthesis and two-photon spectrum of a bis(porphyrin)-substituted squaraine.
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 11,000 GM and, more unusually, also exhibits a large cross section of >780 GM over a photon-wavelength window 750 nm in width.
School of Chemistry & Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA.
Susan A
SA
Odom
Scott
S
Webster
Lazaro A
LA
Padilha
Davorin
D
Peceli
Honghua
H
Hu
Gero
G
Nootz
Sung-Jae
SJ
Chung
Shino
S
Ohira
Jonathan D
JD
Matichak
Olga V
OV
Przhonska
Alexei D
AD
Kachkovski
Stephen
S
Barlow
Jean-Luc
JL
Brédas
Harry L
HL
Anderson
David J
DJ
Hagan
Eric W
EW
Van Stryland
Seth R
SR
Marder