porphyrin donors are linked through their meso positions by ethynyl bridges to a bis(indolinylidenemethyl) squaraine core has been synthesized using Sonogashira coupling. The chromophore exhibits a two-photon absorption spectrum characterized by a peak cross section of 11,000 GM and, more unusually, also exhibits a large cross section of >780 GM over a photon-wavelength window 750 nm in width.
已经使用 Sonogashira 偶联合成了一种生色团,其中
锌卟啉供体通过它们的内消旋位置通过
乙炔桥连接到双(二氢
吲哚亚甲基)
方酸核苷核。发色团表现出双光子吸收光谱,其特征在于峰值横截面为 11,000 GM,并且更不寻常的是,在宽度为 750 nm 的光子波长窗口上也表现出大于 780 GM 的大横截面。