Abstract:

The authors synthesized three porphyrin monomers with different substituents and three porphyrin dimers with different bridgelinked rea
gents according to Alder method. The optical limiting properties of the porphyrins were studied via Z-scan and optical limiting properties, and compared with those of other porphyrin molecules under the similar experimental conditions. The Z-scan curves of all the porphyrin samples were similar to each other. The Z-scan curves of all the porphyrin samples showed the characteristics of reverse saturation absorption. Porphyrin [STHZ]4[ST] had the best optical limiting properties, and the lowest normalized transmittance of porphyrin 4] was 7%.

Key words: porphyrin, monomer, dimer, Z-scan curves, reverse saturation absorption, optical limiting property