Synthesis, optical properties and ultrafast dynamics of a 2,1,3-benzothiadiazole-based red emitter with intense fluorescence and large two-photon absorption cross-section
作者:Yaochuan Wang、Ju Huang、Hui Zhou、Guohong Ma、Shixiong Qian、Xu-hui Zhu
DOI:10.1016/j.dyepig.2011.06.032
日期:2012.1
investigations, together with steady state absorption and one-photon fluorescence spectra, were employed to systematically investigate the optical properties and ultrafast dynamics of the new compound in tetrahydrofuran solution. It shows a large two-photon absorption cross-section and high fluorescence quantum yield, indicating potential application in two-photon fluorescence imaging field. The ultrafast
新的2,1,3-苯并噻二唑-合成并表征了具有D–A–D型结构的基于红色的红色荧光化合物。中心的2,1,3-苯并噻二唑核心通过4,7-位与两个供体基团对称连接,其中芴基环的7-位被咔唑-9-基部分取代,而2-位为被5-噻吩基部分取代。咔唑基团在3,6-位被两个2-萘基基团进一步衍生。飞秒激光光谱技术包括激发态荧光和泵浦探针技术研究,以及稳态吸收和单光子荧光光谱,用于系统研究新化合物在四氢呋喃溶液中的光学性质和超快动力学。它显示出大的双光子吸收截面和高荧光量子产率,表明在双光子荧光成像领域的潜在应用。超快的动力学结果揭示了纯激发态弛豫过程与红色波长区域中受激辐射之间的竞争。