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Electroactive LbL films of metallic phthalocyanines and poly(0-methoxyaniline) for sensing

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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.

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Acknowledgements

This work was supported by FAPESP, FAPEPI, CNPq, CAPES and IMMP/MCT (Brazil).

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Authors and Affiliations

  1. DQ, UFPI, CCN, 64049-550, Teresina, PI, Brazil

    Amanda C. Santos, José R. dos Santos Jr. & Carla Eiras

  2. IFSC, USP, CP 369, 13560-970, São Carlos, SP, Brazil

    Valtencir Zucolotto

  3. DFQB, FCT, UNESP, CP 467, 19060-900, Presidente Prudente, SP, Brazil

    Carlos J. L. Constantino

  4. DF, UFPI, CCN, 64049-550, Teresina, PI, Brazil

    Helder N. Cunha

Authors
  1. Amanda C. Santos
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  2. Valtencir Zucolotto
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  3. Carlos J. L. Constantino
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  4. Helder N. Cunha
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  5. José R. dos Santos Jr.
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  6. Carla Eiras
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Corresponding author

Correspondence to Carla Eiras.

Additional information

This paper is dedicated to Prof. Francisco Nart, in memoriam.

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Santos, A.C., Zucolotto, V., Constantino, C.J.L. et al. Electroactive LbL films of metallic phthalocyanines and poly(0-methoxyaniline) for sensing. J Solid State Electrochem 11, 1505–1510 (2007). https://doi.org/10.1007/s10008-007-0338-9

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  • DOI: https://doi.org/10.1007/s10008-007-0338-9

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