Electrocatalytic studies of covalently immobilized metal tetra-amino phthalocyanines onto derivatized screen-printed gold electrodes
作者： Philani Mashazi , Tebello Nyokong
DOI: 10.1007/S00604-010-0438-6
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摘要: Metal tetra-amino phthalocyanine complexes (MTAPc; where M is Co or Mn) were immobilized on screen-printed gold electrodes pre-modified with monolayers of benzylamino groups. The functionalized then activated using benzene-1,4-dicarbaldehyde as a linker before MTAPc immobilized. surface coverages for the modified confirmed perpendicular orientation MTAPcs. apparent electron transfer constant (kapp) 2.2 × 10−5 cm.s−1 both CoTAPc and MnTAPc calculated data from impedance measurements. kapp values bare found to be 1.2 10−4 4.9 10−6 cm.s−1, respectively. electrocatalysis towards detection H2O2 gave significant peak current densities electrocatalytic potentials at −0.28 V −0.31 electrodes,
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