咔唑衍生物的固相合成及其双光子吸收和光存储应用

摘要

2,8 -Bis [ 2'- ( 4"-pyridyl) ethenyl ] -5-ethylcarbazole and 2,8-bis [ 2'-(2"-pyridyl) ethenyl ] -5-ethyl-carbazole were synthesized from N-ethyl carbazole at room temperature via a solid-state reaction. 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 writing laser was applied to the storage medium for two-photon photobleaching, indicating that they would be three-dimensional optical storage materials.%以N-乙基咔唑为原料,通过室温固相化学反应改进合成了2种双光子吸收材料(咔唑类衍生物2,8-二[2'-(吡啶-4″-基)乙烯基]-5-乙基咔唑(L1),2,8-二[2'-(吡啶-2″-基)乙烯基]-5-乙基咔唑(L2)),其结构经~1H NMR、IR和MS确证,利用Z-扫描技术,测试了其纳秒下的双光子吸收截面为6 210和5 590 GM(1 GM=1×10~(-50) cm~4·s·photon~(-1)),用820 nm的飞秒单脉冲激光作为写入激光对存储介质进行双光子光漂白,对其作为三维光存储材料作了初步的探索.