Studies on polymorphic modifications of copper phthalocyanine

Controllable Molecular Packing Motif and Overlap Type in Organic Nanomaterials for Advanced Optical Properties

“…In addition, when increasing annealing temperature, the peaks at 1092.5 and 1332.6 cm −1 from the vibration in the η-CuPc shift to 1091.5 and 1333.5 cm −1 in the α-CuPc, then to 1089.6 and 1334.5 cm −1 in the β-CuPc. Moreover, the presence of peaks at 1101.2 and 1174.4 cm −1 is only observed in the β phase, consistent with the previous work [31]. To have a better understanding of the impact of the orientation transition of the molecules and the crystal phase on the optical properties, UV-VIS spectroscopy was employed on the crystals annealed at different temperatures, as shown in Figure 8.…”

“…The featured peaks exhibit a clear dependence on the temperature, indicating the process of phase transitions. The bands at 722 and 1332 cm −1 originate from the macrocycle ring deformation and aromatic phenyl-ring vibration of the CuPc molecule [28,31]. At 100 • C, only the peak at 726.1 cm −1 shows up, which can be attributed to the η-CuPc.…”

Synthesis and Characterization of Novel Composite-Based Phthalocyanine Used as Efficient Photocatalyst for the Degradation of Methyl Orange

“…The bands around 1097 and 1133cm -1 are related to Cu-N bands.The peaks at 3182-3485 cm -1 in CuTAP spectrum related to amino groups,in addition the sharp absorption bands are appeared at around 1608 cm _1 due to the -NH2 in plane bending vibrations modes. So it confirms the formation of CuTAP [22,23]. The peak for amino groups of CuTAP shifted to lower wavenumber at 3396 cm -1 due to linked amino groups in phthalocyanine to polymer and confirmed that the tetraamino phthalocyanine supported on polymer, in addition the peaks discussed above related to skeleton of phthalocyanines are observed after supporting and confirmed the stability of catalyst structure.…”

“…IR spectra of tetranitrophthalocyanine and tetraaminophthalocyanine following same vibrational peaks for basic skeleton of phthalocyanines [22]. The peak at 1525 related to nitro group in tetranitrophthalocyanine.…”

“…Synthesis of copper 4, 9, 16, 23-tetraaminophthalocyanine 2 hydrate was according to the previous report [22,23]. In briefly; About 10 g of finely ground copper 4, 9, 16, 23-tetranitrophthalocyanine powder was placed in 250 cm 3 water, after that 50 g of sodium sulfide nonahydrate was added subsequently and stirred at 50 o C for 5h.…”