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.
Odom
Susan A
SA
School of Chemistry & Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA.
Webster
Scott
S
Padilha
Lazaro A
LA
Peceli
Davorin
D
Hu
Honghua
H
Nootz
Gero
G
Chung
Sung-Jae
SJ
Ohira
Shino
S
Matichak
Jonathan D
JD
Przhonska
Olga V
OV
Kachkovski
Alexei D
AD
Barlow
Stephen
S
Brédas
Jean-Luc
JL
Anderson
Harry L
HL
Hagan
David J
DJ
Van Stryland
Eric W
EW
Marder
Seth R
SR