Advanced Materials, Vol.16, No.21, 1933-1933, 2004
Reverse saturable absorption in the near-infrared by fused porphyrin dimers
Bromine and iodine substituents increase the yield of triplet excited states in a triply linked fused porphyrin dimer (see Figure), resulting in efficient reverse saturable absorption in the near-infrared range at 600-970 nm on the nanosecond timescale.