Synthesis of Oligomeric Axially Bridged Ruthenium Phthalocyanines and 2,3-Naphthalocyanines

Synthesis, electrochemistry and spectroscopic properties of ruthenium phthalocyanine and naphthalocyanine complexes with triphenylarsine ligands

“…Generally the Q-band of ruthenium naphthalocyanine complexes is significantly bathochromically shifted compared to the phthalocyanine derivative bearing the same axial ligands, while the Soret-band remains at a similar energy. [16,20] Consistent with this observation the Q-band of 2 is bathochromically shifted by 1586 cm -1 compared to that of 1. Unusually the Soret-band experiences an even larger bathochromic shift of 3590 cm -1 .…”

“…Signals arising from protons "e", furthest from the ruthenium metal centre, are observed at δ 7.87. The macrocyclic protons, in particular "a" and "b", where the influence of the axial ligands is greatest, are shifted upfield compared to analogous complexes bearing aromatic N-heterocyclic axial ligands [16,29,30] such as pyridine and quinoline. This trend is also observed in the spectrum of 1 and indicates that the AsPh 3 ligand is more electron donating than the N-heterocyclic ligands.…”

“…Ruthenium phthalocyanine complexes have been investigated as sensitisers in photodynamic therapy (PDT) [1,2] and photovoltaic devices, [3][4][5] as catalysts in oxidation, [6][7][8] reduction, [9][10][11] hydrogenation, [12] and cyclopropanation reactions, [13] as gas sensing thin films, [14] and as organic conductors. [15,16] Despite the close structural similarity, ruthenium naphthalocyanine complexes have attracted much less attention. Their use as sensitisers in PDT [17] and as organic conductors [16,18] has been reported.…”

“…[15,16] Despite the close structural similarity, ruthenium naphthalocyanine complexes have attracted much less attention. Their use as sensitisers in PDT [17] and as organic conductors [16,18] has been reported.…”

Synthesis, Characterization, Electrochemistry, and Spectroscopic Properties of Some Anthracenyl Functionalized Phthalocyanine Complexes of Ruthenium(II)

“…Peripheral substitution of the macrocycle has only a weak influence on the position of the Q-band. Hanack group reported that peripheral substitution with an electron-donating group causes a weak bathochromic shift of the Q-band [28]. The near-infrared absorption band in (C 3 R RuPc) was attributed to a better -bond conjugation indicative of the synergy effect of the Ru-Ru metal bond linkage of the dimeric complex.…”