Sandwich-Type Lanthanide(III) Dinaphthalocyanine Complexes Possessing an Intensive Absorption in the Near IR Region: Synthesis and Investigation of Properties

Phenoxysubstituted sandwich-type naphthalocyanine complexes of lanthanides were synthesized in a melt under the heating and using microwave irradiation assisted approach. The intensive absorption in the near IR region up to 2000 nm was found. All complexes obtained were characterized using MALDI-TOF mass spectrometry, UV/Vis/NIR and 1H NMR spectroscopy. The presence of reversible redox properties was demonstrated by cyclic voltammetry for a wide range of potentials (-1.6÷1.6 V).