A series consisting of a dyad, a triad and a tetrad containing either two, three and four BODIPY units, respectively, has been synthesized and fully characterized and compared to two mono-BODIPY analogs (used as references). The one- and two-photon photophysical properties have been measured and the X-ray structures of four of the BODIPY derivatives have been determined. In the 700-900 nm range, the two-photon absorption (TPA) cross sections range from 30 GM to 160 GM for these compounds.

中文翻译：

---

BODIPY及其二联体，三联体和四联体的双光子吸收特性和结构。

已合成并完全表征了由分别包含两个，三个和四个BODIPY单元的二元组，一个三元组和一个四元组组成的系列，并将其与两个mono-BODIPY类似物（用作参考）进行了比较。测量了一个和两个光子的光物理性质，并确定了四个BODIPY衍生物的X射线结构。在700-900 nm范围内，这些化合物的双光子吸收（TPA）截面范围从30 GM到160 GM。