Ozoemena, KIMamuru, SAFukuda, TKobayashi, NNyokong, T2009-09-112009-09-112009-06Ozoemena, KI, Mamuru, SA, Fukuda, T, Kobayashi, N and Nyokong, T. 2009. Metal (Co, Fe) tribenzotetraazachlorin-fullerene conjugates: impact of direct p-bonding on the redox behaviour and oxygen reduction reaction. Electrochemistry Communications, Vol. 11(6). pp 1221-12251388-2481http://hdl.handle.net/10204/3583Copyright: 2009 ElsevierNovel hexabutylsulphonyltribenzotetraazachlorin–fullerene (C60) complexes of iron (FeHBSTBTAC–C60) and cobalt (CoHBSTBTAC–C60) have been synthesized and their electrochemistry and oxygen reduction reaction (ORR) compared with their octabutylsulphonylphthalocyanine analogues (FeOBSPc and CoOBSPc). It is proved that electron-withdrawing substituents (–SO2Bu and C60) on phthalocyanine macrocycle exhibit distinct impact on the solution electrochemistry of these metallophthalocyanine (MPc) complexes. The more electron-withdrawing C60 substituent suppressed ORR compared to the –SO2Bu in alkaline medium. FeOBSPc showed the best ORR activity involving a direct 4-electron mechanism, a rate constant of ~1 x 108 cm3 mol-1 s-1 and a Tafel slope of -171 mV dec-1.enCyclic voltammetryRDE experimentOxygen reductionMetal (Fe, Co) phthalocyanine–C60Electron bondingElectrochemistry CommunicationsElectrochemistryTribenzotetraazachlorin-fullerene conjugatesArticleOzoemena, K., Mamuru, S., Fukuda, T., Kobayashi, N., & Nyokong, T. (2009). Metal (Co, Fe) tribenzotetraazachlorin-fullerene conjugates: impact of direct p-bonding on the redox behaviour and oxygen reduction reaction. http://hdl.handle.net/10204/3583Ozoemena, KI, SA Mamuru, T Fukuda, N Kobayashi, and T Nyokong "Metal (Co, Fe) tribenzotetraazachlorin-fullerene conjugates: impact of direct p-bonding on the redox behaviour and oxygen reduction reaction." (2009) http://hdl.handle.net/10204/3583Ozoemena K, Mamuru S, Fukuda T, Kobayashi N, Nyokong T. Metal (Co, Fe) tribenzotetraazachlorin-fullerene conjugates: impact of direct p-bonding on the redox behaviour and oxygen reduction reaction. 2009; http://hdl.handle.net/10204/3583.TY - Article AU - Ozoemena, KI AU - Mamuru, SA AU - Fukuda, T AU - Kobayashi, N AU - Nyokong, T AB - Novel hexabutylsulphonyltribenzotetraazachlorin–fullerene (C60) complexes of iron (FeHBSTBTAC–C60) and cobalt (CoHBSTBTAC–C60) have been synthesized and their electrochemistry and oxygen reduction reaction (ORR) compared with their octabutylsulphonylphthalocyanine analogues (FeOBSPc and CoOBSPc). It is proved that electron-withdrawing substituents (–SO2Bu and C60) on phthalocyanine macrocycle exhibit distinct impact on the solution electrochemistry of these metallophthalocyanine (MPc) complexes. The more electron-withdrawing C60 substituent suppressed ORR compared to the –SO2Bu in alkaline medium. FeOBSPc showed the best ORR activity involving a direct 4-electron mechanism, a rate constant of ~1 x 108 cm3 mol-1 s-1 and a Tafel slope of -171 mV dec-1. DA - 2009-06 DB - ResearchSpace DP - CSIR KW - Cyclic voltammetry KW - RDE experiment KW - Oxygen reduction KW - Metal (Fe, Co) phthalocyanine–C60 KW - Electron bonding KW - Electrochemistry Communications KW - Electrochemistry KW - Tribenzotetraazachlorin-fullerene conjugates LK - https://researchspace.csir.co.za PY - 2009 SM - 1388-2481 T1 - Metal (Co, Fe) tribenzotetraazachlorin-fullerene conjugates: impact of direct p-bonding on the redox behaviour and oxygen reduction reaction TI - Metal (Co, Fe) tribenzotetraazachlorin-fullerene conjugates: impact of direct p-bonding on the redox behaviour and oxygen reduction reaction UR - http://hdl.handle.net/10204/3583 ER -