Cyanine dyes decorated with 2,2-bis(methylol)propionic acid (bis-MPA) based dendrons up to third generation were synthesized. Dendrons were attached to the chromophore using a “click chemistry” reaction. Photophysical characterizations of these dyes show intense absorption and emission in the near-infrared (NIR), while nonlinear transmission experiments of the dendron-decorated chromophores indicate that properties in the IR of the parent dyes are conserved. This synthetic approach is a crucial preliminary step towards the preparation of solid functional materials for optical limiting (OL) applications in the IR.
我们合成了以 2,2-双(
甲醇)
丙酸(bis-MPA)为基础的树枝状化合物装饰的第三代青色
染料。树枝通过 "点击
化学 "反应连接到发色团上。这些
染料的光物理特性显示出在近红外(NIR)有强烈的吸收和发射,而树枝状装饰发色团的非线性透射实验表明,母体
染料在红外的特性保持不变。这种合成方法是制备用于红外光限(OL)应用的固体功能材料的关键性初步步骤。