Phenanthroline-appended azaphthalocyanine with peripheral chelating site and panchromatic absorptivity

In this study, an unsymmetrical phenanthroline-appended azaphthalocyanine with a completely planar conjugated molecular structure was synthesized. 1H NMR spectroscopy confirmed its structure. Electronic absorption characterization showed that the Q-band absorption of phthalocyanine was significantly broadened and red-shifted due to extended π-conjugation, and mid-wavelength light could also be well absorbed due to phenanthroline component. such a panchromatic ligand bears peripheral chelating site and can further form metal complex dyads.