SYNTHESIS AND OPTICAL PROPERTIES OF AZA-BODIPY-PORPHYRIN

Abstract

In this work, a porphyrin-BODIPY conjugated system has been designed and synthesized. The meso-alkyne-linked porphyrin zinc complex precursor (3) has been successfully synthesized. The compound showed strong Soret or B band absorption at about 451 nm. Other absorptions are weak absorption bands (the Q band) at 596 and 641 nm. Due to the fact that porphyrin systems usually do not absorb light in the green region (500-600 nm), 2-Bromo-4,4-difluoro-1,7-bis(4-dodecyloxyphenyl)-3,5- diphenyl-4-bora-3a,4a,8-triaza-s-indacene (10) which can absorb light in the green region (665 nm) has been connected to the precursor 3 in order to increase absorbance in that region. All synthesized compounds were characterized by 1H NMR spectroscopy, 13C NMR spectroscopy, MALDI-TOF mass spectrometry and IR spectroscopy. Their photophysical properties were investigated by UV-visible spectroscopy and fluorescence spectroscopy.