在钯催化下, 一步反应合成并表征了三个扭曲并苯功能化的杂芳烃分子(2, 5, 8)。与扭曲并苯分子1相比, 所得分子的吸收波长和发射波长发生明显红移, 荧光位于蓝光和绿光区域。化合物2、5、8的最大吸收波长分别位于462、478、468 nm, 发射波长分别位于476/506、497/527、497/520 nm。利用循环伏安法测试了分子的电化学性质, 结果显示分子8拥有最小的可逆的第一氧化电位0.35 V, 归因于氧化氨基部分。利用飞秒激光实验表征了分子的光限幅性质, 实验结果表明所有分子均具有优良的透过率, 且分子5呈现最优的光限幅响应能力。

A series of novel twistacene-decorated arenes including heterorings (2, 5, 8) were con-veniently synthesized promoted by palladium catalyst in one step and characterized. Compared with the model twistacene 1, all of them exhibited red-shifted absorption spectra with the maximum peaks centered at 462 nm for 2, 478 nm for 5, 468 nm for 8, and emission spectra spectra with the maximum bands at 476/506 nm for 2, 497/527 nm for 5, 497/520 nm for 8 respectively, which belonged to blue and green fluorescence region. The electrochemical properties were carried out through cyclic voltammetry method and molecule 8 displayed a smallest oxidation potential at 0.35 V among them, which resulted from the oxidation of the amine moiety. Their optical limiting properties were examined via femtosecond laser. The results suggest that all of them exhibit high transmittance and 5 possesses excellent optical limiting response.