Protonation of some non-transition metal phthalocyanines: spectral and photophysicochemical consequences
| dc.contributor.author | Akinbulu, "I. A." | |
| dc.contributor.author | Ogunsipe, "A. O. " | |
| dc.contributor.author | Idowu, "M. A." | |
| dc.contributor.author | Ogunbayo, "T. B." | |
| dc.date.accessioned | 2019-10-08T10:35:08Z | |
| dc.date.available | 2019-10-08T10:35:08Z | |
| dc.date.issued | 2012 | |
| dc.description.abstract | The photophysics and photochemistry of phthalocyanine complexes of magnesium (MgPc), aluminum chloride (ClAlPc) and zinc (ZnPc) are studied in N,N′-dimethylformamide (DMF). The values obtained for the photophysical and photochemical parameters are normal for simple metallophthalocyanine (MPc) complexes. Protonation of the azomethine bridges reduced the photoactivities of the complexes considerably; however the excited triplet states of the protonated species are more stable towards ground state oxygen. The interaction of the non-protonated MPcs with ground state oxygen is shown to be diffusion-assisted, with bimolecular rate constant values of the order of 1010 M-1.s-1. MgPc could not be protonated; it was easily demetalated by the protonating acid. The kinetics of the demetalation yielded the rate equation: Rate = 0.1[MgPc][H+] 2/3 | en_US |
| dc.identifier.citation | Ogunsipe, A. O., Idowu, M. A., Ogunbayo, T. B., & Akinbulu, I. A. (2012). Protonation of some non-transition metal phthalocyanines—spectral and photophysicochemical consequences. Journal of Porphyrins and Phthalocyanines, 16(07n08), 885-894. | en_US |
| dc.identifier.uri | https://ir.unilag.edu.ng/handle/123456789/6310 | |
| dc.language.iso | en | en_US |
| dc.publisher | http://www.worldscinet.com/jpp/ | en_US |
| dc.subject | Chemical Kinectics | en_US |
| dc.subject | Physical Chemistry | en_US |
| dc.subject | Photochemistry | en_US |
| dc.title | Protonation of some non-transition metal phthalocyanines: spectral and photophysicochemical consequences | en_US |
| dc.type | Article | en_US |