Large two-photon absorption (TPA) cross-section of directly linked fused diporphyrins.
The excited state dynamics and two-photon absorption properties of four novel triply linked porphyrin dimers in toluene have been investigated. The fused porphyrin dimers exhibit extremely increased two-photon absorption cross-section values (12,000-15,000 GM) compared with porphyrin monomers owing to much enhanced pi-electron delocalization throughout the porphyrin dimer ring.
Kim
Deok Yun
DY
Center for Ultrafast Optical Characteristics Control and Department of Chemistry, Yonsei University, Seoul 120-749, Korea.
Ahn
Tae Kyu
TK
Kwon
Jung Ho
JH
Kim
Dongho
D
Ikeue
Takahisa
T
Aratani
Naoki
N
Osuka
Atsuhiro
A
Shigeiwa
Motoyuki
M
Maeda
Shuichi
S