Synthesis of star-shaped monodisperse oligo(9,9-di-n-octylfluorene-2,7-vinylene)s functionalized truxenes with two-photon absorption properties.
Synthesis of star-shaped monodisperse oligo(9,9-di-n-octylfluorene-2,7-vinylene)s functionalized truxenes with two-photon absorption properties.
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DOI：
10.1039/c0ob00803f
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发表时间：
2011-02
影响因子：
3.2
通讯作者：
Huipeng Zhou;Xin Zhao;Tian-Hao Huang;R. Lu;Hanzhuang Zhang;X. Qi;Pengchong Xue;Xingliang Liu
中科院分区：
文献类型：
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作者：
Huipeng Zhou;Xin Zhao;Tian-Hao Huang;R. Lu;Hanzhuang Zhang;X. Qi;Pengchong Xue;Xingliang Liu
合成了一系列新的星型单分散的含芴-亚乙烯基低聚臂的共轭三聚氧乙烯衍生物（Tr-OFVn，n = 1，2，3，4）。结果发现，寡聚体的共轭可以随着臂的延长而延长。值得注意的是，没有强供体和受体单元的支链低聚物Tr-OFVn表现出双光子吸收性质，并且双光子吸收截面（δ（max））随着臂中芴-亚乙烯基单元的数目增加而增加。化合物Tr-OFV 4的δ（max）最大值达到8073 GM，这使其成为具有增强TPA截面的最具竞争力的化合物之一。它为开发强TPA化合物提供了一个新的平台，其中扩展的π-共轭体系在缺乏强供体和受体单元的情况下参与。
A series of new star-shaped monodisperse conjugated truxene derivatives bearing oligo(fluorene-vinylene) arms (Tr-OFVn, n = 1, 2, 3, 4) have been synthesized. It is found that the conjugation of the oligomers can be extended with prolonging the arms. Notably, the branched oligomers Tr-OFVn without strong donor and acceptor units exhibit two-photon absorption properties, and the two-photon absorption cross sections (δ(max)) increase with increasing the number of fluorene-vinylene units in the arms. The maximum value of δ(max) reaches 8073 GM for compound Tr-OFV4, which made it one of the most competitive compounds with enhanced TPA cross section. It provides a new platform for exploiting strong TPA compounds, in which the extended π-conjugated systems are involved in the absence of strong donor and acceptor units.