Synthesis, Crystal Structure, and Nonlinear Optical Behavior of β-Unsubstituted meso−meso E-Vinylene-Linked Porphyrin Dimers

Autor: Frampton, M. J., Akdas, H., Cowley, A. R., Rogers, J. E., Slagle, J. E., Fleitz, P. A., Drobizhev, M., Rebane, A., Anderson, H. L.
Zdroj: Organic Letters; November 2005, Vol. 7 Issue: 24 p5365-5368, 4p
Abstrakt: A vinylene-linked porphyrin dimer, with no substituents at the β-positions, has been synthesized by CuI/CsF promoted Stille coupling. In the crystal structure of this dimer, the C2H2 bridge is twisted by 45° relative to the plane of the porphyrins. The absorption, emission spectra, and electrochemistry reveal substantial porphyrin−porphyrin π-conjugation. The triplet excited-state absorption spectrum of this dimer makes it suitable for reverse saturable absorption at 710−900 nm.
Databáze: Supplemental Index