Two-photon absorption and effective optical power-limiting properties of small dendritic chromophores derived from functionalized fluorene/oxadiazole units
作者:Tzu-Chau Lin、Ying-Hsuan Lee、Bor-Rong Huang、Chia-Ling Hu、Yu-Kai Li
DOI:10.1016/j.tet.2012.04.073
日期:2012.6
A set of novel multi-branched chromophores composed of four analogues with generic skeletons of donor-π-acceptor (D-π-A) derived from functionalized fluorene/oxadiazole moieties has been synthesized and experimentally shown to possess strong and wide-dispersed two-photon absorptivities in near infrared (NIR) region under the irradiation of femtosecond laser pulses. It is demonstrated that structural
合成了一组新颖的多支发色团,该发色团由四个类似物组成,这些类似物具有衍生自功能化芴/恶二唑基团的供体-π-受体(D-π-A)的一般骨架,并通过实验证明其具有强而分散的两个飞秒激光脉冲辐照下近红外(NIR)区域的光子吸收率。结果表明,结构参数,例如π骨架的大小和所连接的给电子单元的数量与这些模型化合物的分子双光子活性密切相关。