Truxene-BODIPY dyads and triads: Synthesis, spectroscopic characterization, one and two-photon absorption properties and electrochemistry

Eight green and blue BODIPY dyes, substituted by diverse truxene units, have been synthesized and fully characterized by HRMS and NMR spectroscopy as well as electrochemistry to determine their redox properties. Different substituents such as bromine, thiophene and ethynylthiophene were introduced at the 7,12-positions of the truxene units to further extend the conjugation pathway and increase their TPA properties. Their linear (one photon) and non-linear (two-photon) photophysical properties were also carefully investigated.