Metalloporphyrins and fullerenes have been extensively used for modification of electrode surfaces and subsequent applications in the fields of sensors and catalysis.1,2 Metalloporphyrins as electrode surface modifying agents are very attractive because of their redox tuning by the choice of metal ion in the macrocycle cavity and peripheral substituents on the ring.1 Recently, fullerenes have also shown promise as materials for electrode surface modification.2 The present contribution deals with the porphyrin and fullerene surface modified electrodes developed for sensor and catalytic purposes in our laboratory. Specific examples to be discussed include: electrocatalysts for a direct four-electron reduction of dioxygen to water at elevated pH conditions by using ion-pair metalloporphyrin dimer modified electrodes;3 electrochemical sensors for dioxygen detection in solution by using electrodes modified with condensation polymer film of β-cyclodextrin hosting cobalt porphyrin redox centers;4 electrocatalytic reuction of α,ω-dihaloalkanes by fullerene, C60, modified electrodes;5 modification and electrochemical characterization of electrode surfaces by self-assembled monolayers of functionalized fullerene-ferrocene dyads;6 and, recognition and catalytic reduction of Cytochrome c by fullerene-palladium modified electrodes.7
1. Biesaga, M.; Pyrzynska, K.; Trojanowicz, M. Talanta (2000), 51, 209-224.
2. Sherigara, B. S.; Kutner, W.; D'Souza, F. Electroanalysis (2003), 15, 753-772.
3. D'Souza, F.; Hsieh, Y-Y.; Deviprasad, G. R. Chem. Commun. (1998), 1027-1028.
4. D'Souza, F.; Choi, J-p.; Hsieh, Y-Y.; Shriver, K.; Kutner, W. J. Phys. Chem. B (1998), 102, 212-217.
5. D'Souza, F.; Hsieh, Y-Y.; Wickman, H.; Kutner, W. Chem. Commun. (1997), 1191-1192.
6. Hoang, Vu T.; Rogers, Lisa M.; D'Souza, Francis. Electrochemistry Communications (2002), 4(1), 50-53.
7. D'Souza, F. et. al. Manuscript in preparation, (2003).