Abstract
Tetrabenzoporphyrins fused with fluoranthenes were prepared by the retro Diels-Alder reaction of the precursors composed of a porphyrin and four fluoranthenes connected with bicyclo[2.2.2]octadiene (BCOD). These porphyrins exhibited the Soret (480―494 nm, e = 243,000―277,000) and intense Q bands (739―760 nm, e = 375,000―509,000). Free bases and Zn complexes of them fluoresce at 760 nm and 746 nm with small Storks shifts and high quantum yields of 30 and 10 %, respectively.
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