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Ndebele N, Nyokong T. The Electrocatalytic Detection of Nitrite Using Manganese Schiff Base Phthalocyanine Complexes. Electrocatalysis (N Y) 2022. [DOI: 10.1007/s12678-022-00752-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nyokong T. A career in photophysicochemical and electrochemical properties of phthalocyanine — a Linstead Career Award paper. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s1088424620300037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This manuscript highlights the author’s contributions to phthalocyanine chemistry, especially the applications based on their electrochemistry and photophysicochemistry. In particular, the use of phthalocyanines as electrocatalysts and photocatalysts is presented. For photocatalysis, photodynamic antimicrobial chemotherapy and pollution control using green technologies are highlighted. For electrocatalysis the phthalocyanines are employed for the detection of pollutants and environmentally important molecules. Phthalocyanines are combined with nanomaterials for improved photocatalysis and electrocatalysis.
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Affiliation(s)
- Tebello Nyokong
- Institute for Nanotechnology Innovation, Department Chemistry, Rhodes University, P. O. Box 94, Makhanda, South Africa
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Sen P, Zeki Yildiz S. Substituted manganese phthalocyanines as bleach catalysts: synthesis, characterization and the investigation of de-aggregation behavior with LiCl in solutions. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-018-3637-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Sevim AM, Yenilmez HY, Aydemir M, Koca A, Bayır ZA. Synthesis, electrochemical and spectroelectrochemical properties of novel phthalocyanine complexes of manganese, titanium and indium. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.05.149] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Self-assembled monolayer of 2,9,16,23-tetrahydroxythiophenylphthalocyanatocobalt(II) on gold electrode and its electrocatalytic activity towards dioxygen reduction. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2013.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Coates M, Antunes E, Nyokong T. Electrochemical, spectroscopic and microscopic studies of new manganese phthalocyanine complexes in solution and as self-assembled monolayers on gold. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424610002471] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Four new manganese(III) phthalocyanines (3a–d), octasubstituted at the peripheral position with pentylthio, decylthio, benzylthio, and phenylthio groups, respectively, were synthesized. Their specific electrochemical, spectroscopic and microscopic properties in solution and as self-assembled monolayers on gold were characterized. The UV-vis spectra confirmed red-shifted Q bands for all the complexes, due to the effect of the central metal and the electron-donating substituents. Three redox couples were visible during cyclic voltammetry studies for the four complexes, and spectroelectrochemistry confirmed the couples as corresponding to MnIIIPc-2/MnIIPc-2 (II) (metal reduction), MnIIPc-2/MnIIPc-3 (III) (ring reduction) and MnIIIPc-1/MnIIIPc-2 (I) (ring oxidation). Electrochemistry was also used to determine the blocking characteristics of the MnPc self-assembled monolayers on gold, which proved to be highly dependent on the type of substituent. Other methods of characterization included Raman spectroscopy, atomic force and scanning electrochemical microscopy analyses of the SAMs.
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Affiliation(s)
- Megan Coates
- Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa
| | - Edith Antunes
- Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa
| | - Tebello Nyokong
- Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa
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Nyokong T. Electronic Spectral and Electrochemical Behavior of Near Infrared Absorbing Metallophthalocyanines. FUNCTIONAL PHTHALOCYANINE MOLECULAR MATERIALS 2010. [DOI: 10.1007/978-3-642-04752-7_2] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Matemadombo F, Durmuş M, Togo C, Limson J, Nyokong T. Characterization of manganese tetraarylthiosubstituted phthalocyanines self assembled monolayers. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.04.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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News. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/anie.200902105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Materialwissenschaften: L'Oréal-UNESCO-Preise für A. Kobayashi, E. Kumacheva und T. Nyokong. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200902105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Akkurt B, Koca A, Hamuryudan E. Synthesis, in situ spectroelectrochemistry and in situ electrocolorimetry of electrochromic octakis(chloroethylsulfanyl) phthalocyaninatomanganese(iii) chloride. NEW J CHEM 2009. [DOI: 10.1039/b9nj00248k] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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