Relationship between two-photon absorption and the pi-conjugation pathway in porphyrin arrays through dihedral angle control.
Recently, covalently linked or self-assembled porphyrin array systems have attracted much attention for their enhanced two-photon absorption (TPA) behaviors. In this study, we have investigated the TPA properties of various dihedral angle controlled, directly linked porphyrin dimers and arrays to elucidate the relationship between the pi-conjugation pathway and TPA properties. We have demonstrated a strong correlation between pi-conjugation (aromaticity) and TPA properties in porphyrin assemblies.
Ahn
Tae Kyu
TK
Center for Ultrafast Optical Characteristics Control and Department of Chemistry, Yonsei University, Seoul 120-749, Korea.
Kim
Kil Suk
KS
Kim
Deok Yun
DY
Noh
Su Bum
SB
Aratani
Naoki
N
Ikeda
Chusaku
C
Osuka
Atsuhiro
A
Kim
Dongho
D