Tuning the photophysical properties of BODIPY dyes through extended aromatic pyrroles
作者:Shawn Swavey、John Quinn、Michael Coladipietro、Kegan G. Cox、M. Kyle Brennaman
DOI:10.1039/c6ra26331c
日期:——
1-pyrenecarboxaldehyde followed by reaction with boron trifluoride to give the asymmetric BODIPY dye (9). Dyes with the more highly conjugated fluoranthopyrrole resulted in a bathochromic shift of ca. 50 nm in the electronic absorption and showed greater stability of the LUMO energy, as determined by electrochemical measurements, compared to their naphthapyrrole analogs. All of the dyes synthesized by this method display
通过两步合成路线合成了三种新的BODIPY染料。通过这种方法,可以将系列扩展到九种不同的BODIPY染料。将石脑油[1,2- c ]吡咯与1-吡啶甲醛混合,得到对称的双吡啶,然后与三氟化硼反应,得到对称的高度共轭的BODIPY染料。将这种合成路线扩展为更共轭的吡咯类氟[2,3- c ]吡咯与1-py碳醛结合,然后与三氟化硼反应,得到不对称的BODIPY染料(9)。具有较高共轭氟吡咯的染料导致ca的红移。与萘酚吡咯类似物相比,通过电化学测量确定的电子吸收强度为50 nm时,LUMO能量显示出更大的稳定性。用这种方法合成的所有染料都显示出大于100 000 M -1 cm -1的摩尔吸收率,光致发光的量子效率为0.8-1.0。染料在二氯甲烷中的激发态寿命适中,范围为3.2 ns至4.3 ns。