Synthesis of star-shaped monodisperse oligo(9,9-di-n-octylfluorene-2,7-vinylene)s functionalized truxenes with two-photon absorption properties
作者:Huipeng Zhou、Xin Zhao、Tianhao Huang、Ran Lu、Hanzhuang Zhang、Xiaohui Qi、Pengchong Xue、Xingliang Liu、Xiaofei Zhang
DOI:10.1039/c0ob00803f
日期:——
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
合成了一系列带有低聚(芴-亚乙烯基)臂(Tr-OFV n,n = 1、2、3、4)的新型星形单分散共轭富勒烯衍生物。发现可以通过延长臂来延长低聚物的缀合。值得注意的是,支链低聚物TR-OFV Ñ没有强大的供体和受体单元表现出双光子吸收属性,和双光子吸收截面(δ最大值随在所述臂的芴-亚乙烯基单元的数目)的增加。的最大值δ最大值达到8073 GM化合物TR-OFV4,这使其成为具有增强的TPA横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平台,其中扩展的π共轭体系不存在强供体和受体单元。