Synthesis and characterization of a highly two-photon active dendrimer derived from 2,3,8-trifunctionalized indenoquinoxaline units
作者:Tzu-Chau Lin、Che-Yu Liu、May-Hui Li、Yi-You Liu、Sheng-Yang Tseng、Yu-Ting Wang、Ya-Hsin Tseng、Hui-Hsin Chu、Chih-Wei Luo
DOI:10.1039/c3tc32040e
日期:——
A dendritic chromophore derived from 2,3,8-trifunctionalized indenoquinoxaline units was synthesized and experimentally shown to manifest very strong and widely-dispersed two-photon absorption (2PA) across the dynamic tuning range of a Ti:sapphire laser. The maximum 2PA of the studied chromophore was found to reach ≈31 700 GM, indicating that 2,3,8-trifuctionalized indenoquinoxaline units are useful building moieties for the construction of highly active 2PA-dyes. In addition, this dendritic structure was also demonstrated to effectively regulate the optical power of femtosecond laser pulses at 800 nm.
我们合成了一种由 2,3,8-三官能化的茚喹喔啉单元衍生的树枝状发色团,实验证明它在钛:蓝宝石激光器的动态调节范围内表现出非常强且广泛分散的双光子吸收(2PA)。研究发现,所研究的发色团的最大 2PA 达到 ≈31 700 GM,这表明 2,3,8-三反式化的茚喹喔啉单元是构建高活性 2PA 染料的有用构建分子。此外,这种树枝状结构还能有效调节 800 纳米飞秒激光脉冲的光功率。