Electroactive LbL films of metallic phthalocyanines and poly(<Emphasis Type="Italic">0</Emphasis>-methoxyaniline) for sensing |
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Authors: | Amanda C Santos Valtencir Zucolotto Carlos J L Constantino Helder N Cunha Jr" target="_blank">José R dos SantosJr Carla Eiras |
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Institution: | 1.DQ, UFPI, CCN,Teresina,Brazil;2.IFSC, USP, CP 369,S?o Carlos,Brazil;3.DFQB, FCT, UNESP, CP 467,Presidente Prudente,Brazil;4.DF, UFPI, CCN,Teresina,Brazil |
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Abstract: | Multilayered nanostructured films have been widely investigated for electrochemical applications as modified electrodes, including
the layer-by-layer (LbL) films where properties such as thickness and film architecture can be controlled at the molecular
level. In this study, we investigate the electrochemical features of LbL films of poly(o-methoxyaniline; POMA) and tetrasulfonated phthalocyanines containing nickel (NiTsPc) or copper (CuTsPc). The films displayed
well-defined electroactivity, with redox pairs at 156 and 347 mV vs SCE, characteristic of POMA, which allowed their use as
modified electrodes for detecting dopamine and ascorbic acid at concentrations as low as 10−5 M.
This paper is dedicated to Prof. Francisco Nart, in memoriam. |
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Keywords: | LbL films Dopamine Ascorbic acid Sensors Phthalocyanines |
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