Characterization and preparation of green colored intramolecular novel ball type cobalt phthalocyanine complexes with single-chain polymer structure

• Published in: Journal of molecular structure Vol. 1227; p. 129389
• Main Authors: Abubakar, Abdullahi Musa, Demirelli, Kadir, Tuncer, Hülya, Salih, Bekir
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 05-03-2021
• Subjects: Characterization; Maldi-tof-ms; Phthalocyanine; Single chain polymer; Characterization; Single chain polymer; Phthalocyanine; Maldi-tof-ms
• ISSN: 0022-2860; 1872-8014
• DOI: 10.1016/j.molstruc.2020.129389

•The single-chain polymeric-ball type copcs (SCP-ball type CoPcs) were synthesized.•SCP-ball type copcs were characterized by MALDI-TOF-MS, UV–Vis, FT-IR, NMR.•Thermal and dielectric behavior of the polymer were carried out.•The activation energies for degradation of SCP-ball type CoPc2 were estimated.
The single-chain polymeric-ball type CoPcs (SCP-ball type CoPcs) were synthesized via the intramolecular macrocyclization reaction of cobalt phthalocyanines from poly(PNDEAMSt2%-co-St) (as named precursor copolymer1) and poly(PNDEAMSt6%-co-St), as named precursor copolymer2) as precursors under diluted solution conditions at 155 °C in presence of cyclohexanol. SCP-ball type CoPc1 and SCP-ball type CoPc2 were prepared from precursor copolymer1 and precursor copolymer2, respectively. The ball-type phthalocyanine moiety was incorporated into one side of the polymer chain. Both linear copolymer precursor and formation of ball-type cobalt phthalocyanine within a single-chain polymer were confirmed by FT-IR, 1H NMR, UV/Vis spectroscopy and MALDI-TOF-MS techniques. Particularly, the formation of SCP-ball type CoPc2 complex was characterized by almost disappearance of –CN band at 2230 cm−1 of the FT-IR and appearance of Q band between 601 and 673 nm. Average apparent activation energies of the thermal degradation of SCP-ball type CoPc2 calculated by three model-free methods in a period of α=0.07–0.90 have been estimated, and the activation energy for weight loss from 7% to 90% was increased from 33.16kj/mol to 36.73kj/mol, respectively. Optical and dielectrical measurements of linear copolymer precursor2 and SCP-ball type CoPc2 were carried out.
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