咔唑衍生物的固相合成及其双光子吸收和光存储应用

Solid-state Synthesis of Carbazole Derivatives and Their Two-photon Absorption and Optical Storage Properties

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=1×10-50cm4.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。

2,8-Bis[2′-（4″-pyridyl）ethenyl]-5-ethylcarbazole and 2,8-bis[2′-（2″-pyridyl）ethenyl]-5-ethylcarbazole 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.