Synthesis and self-organization of fluorene-conjugated bisimidazolylporphyrin and its optical properties.
A conjugated-bisimidazolylporphyrin bridged by bis(ethynylfluorene) was synthesized and organized into linear polymer through self-coordination having mean molecular weights, M(w) and M(n), of ~2.1 × 105 Da and ~1.6 × 105 Da, respectively. A large two-photon absorption cross section value of 3.4 × 105 GM (per dimer unit) was observed. This value was comparable to that of the previously reported self-assembled linear polymer consisting of butadiyne-bridged imidazolylporphyrins. The two-photon absorption properties could be controlled by tuning the wavelength and absorption intensity of the one-photon absorption.
Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan. kogawa@yamanashi.ac.jp.
Kazuya
K
Ogawa
Naoyuki
N
Makiuchi
Yoshiaki
Y
Kobuke
D002850:Chromatography, Gel; D005461:Fluorine / Q000737:chemistry*; D007093:Imidazoles / Q000138:chemical synthesis* / Q000737:chemistry; D017711:Nonlinear Dynamics; D055620:Optical Phenomena; D017785:Photons; D011166:Porphyrins / Q000138:chemical synthesis* / Q000737:chemistry; D066244:Proton Magnetic Resonance Spectroscopy; D013056:Spectrophotometry, Ultraviolet
D007093:Imidazoles; D011166:Porphyrins; D005461:Fluorine