The synthesis of novel bodipy based fluorophores appended to pyridine (py), terpyridine (terpy), and phenanthroline (phen) cores has been performed using three different methods. The most effective and reliable method consists in cross coupling an iodo functionalized bodipy with ethynyl grafted oligopyridines. The cross coupling the other way around from an ethynyl functionalized bodipy is less effective due to a homocoupling reaction leading to the butadiyne bridged species. For the less stable alkynes, a one-pot protocol, under phase transfer conditions, using the trimethylsilyl-protected alkynes has been finalized. Compounds exhibit very strong absorption and emission properties in the visible.
通过三种不同的方法,将基于bodipy的新型荧光团与
吡啶(py)、三联
吡啶(terpy)和
菲啰啉(phen)核心结合在一起。最有效、最可靠的方法是将
碘官能化的bodipy与
乙炔接枝的寡
吡啶进行交叉偶联。由于同耦合反应会导致形成丁炔桥联物种,因此从
乙炔官能化的bodipy反向交叉偶联的效果较差。对于不太稳定的
炔烃,在相转移条件下,使用三甲基
硅烷保护的
炔烃的一锅法方案已经完成。化合物在可见光下表现出非常强的吸收和发射特性。