Abstract:

2,8-Bis[2'-(4"-pyridyl)ethenyl]-5-ethylcarbazole (L1) and 2,8-bis[2'-(2"- pyridyl)ethenyl]-5-ethylcarbazole (L2) were synthesized by solid-state reaction at room temperature from N-ethyl carbazole. Their structures were characterized by ¹H NMR, IR and MS. Two-photon absorption cross-sections were obtained by Z-scan technique. The femtosecond single pulse laser (820 nm) as Write laser was applied to the storage medium for two-photon photobleaching, indicating they would be three-dimensional optical storage materials.

Key words: N-ethyl carbazole, vinyl pyridine derivative, solid-state reaction, two-photon absorption, photobleaching storage