A novel extended tetrathiafulvalene was prepared by introducing the large pentaleno[1,2-b:4,5-b']difluorene as a central polycyclic aromatic hydrocarbon moiety. This compound behaved as a multi-redox system that could take reversibly six redox states (-1, 0, +1, +2, +3, +4). The compound exhibited strong absorptions in the visible region with an end-absorption almost reaching to 700 nm.