Synthesis and photophysicochemical properties of novel mononuclear rhodium(III) phthalocyanines

Chloro axially-substituted octa(4-isopropylphenoxy)rhodium(III)phthalocyanine, (R)8PcRhCl (3), was reacted with the nitrogenous bases pyridine (Py) and pyrazine (Pyz) to give the axially-disubstituted octa(4-isopropylphenoxy)rhodium(III)phthalocyanines [(R)8PcRhCl(L)] (4) and (5), L = (Py) and (Pyz), respectively. In this study, the fluorescence quantum yield (ΦF), the phosphorescence quantum yield (Φphos) and the photodegradation quantum yield (Φpd) values for the newly synthesized rhodium phthalocyanine complexes (RhPcs) 4 and 5 are reported. The complexes have also been fully characterized by elemental analysis, FD mass spectrometry, FT-IR and 1H NMR spectroscopy.

The synthesis, fluorescence, phosphorescence and photodegradation properties of novel mononuclear axially substituted octa(4-isopropylphenoxy)rhodium(III)phthalocyanines (RhPcs) 3–5 are described. The fluorescence quantum yield (ΦF), phosphorescence quantum yield (Φphos) and the photodegradation quantum yield (Φpd) values for the RhPcs are reported.Figure optionsDownload as PowerPoint slideHighlights
► The spectral and photophysicochemical properties of the soluble peripheral substituted chlororhodium phthalocyanines were discussed.
► Due to the excellent spectroscopic behaviors of RhPcs in solvents can be used as advanced optical chemical sensing materials.
► Also due to their low photodegradation yields can be used as photocatalysts.