In this work we present an investigation of the non-linear optical (NLO) properties of two octupolar chromophores: [Zn(4,4′-bis(dibutylaminostyryl)-[2,2′]-bipyridine)3]2+ and [Zn(4,4′-bis((E)-2-(N-(TEG)pyrrol-2-yl)vinyl)-[2,2′]-bipyridine)3]2+ with Zn(II) as the coordination center, using two-photon emission technique (TPE) in fs-pulse temporal regime. Compared to the free ligands, our results do not show a net increase in the two-photon absorption (TPA) cross-section for the octupolar complexes, once normalized to the ligand unit. This is in partial disagreement with a previous theoretical study investigating the first molecule where a significant increase of the TPA cross-section was predicted (X. J. Liu, et al., J. Chem. Phys., 2004, 120, 11 493).
在本研究中,我们对两种八极体色团的非线性光学(NLO)特性进行了调查:[Zn(4,4'-双(
二丁胺基
乙烯基)-[2,2']-联
吡啶)3]2+ 和 [Zn(4,4'-双((E)-2-(N-(T
EG)
吡咯-2-基)
乙烯基)-[2,2']-联
吡啶)3]2+,以Zn(II)作为配位中心,采用飞秒脉冲时间域的双光子发射技术(TPE)。与自由
配体相比,我们的结果并未显示八极体络合物的双光子吸收(
TPA)截面在归一化到
配体单位后有明显增加。这与之前一项研究第一种分子的理论预测部分不一致,该研究预测了
TPA截面的显著增加(X. J. Liu 等,J. Chem. Phys., 2004, 120, 11 493)。