Grafting of 4-pyrrolyphenyldiazonium in situ generated on NiTi, an adhesion promoter for pyrrole electropolymerisation?

A. Jacques, M. M. Chehimi, C. Poleunis, A. Delcorte, J. Delhalle, Zineb Mekhalif

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

The present work investigates the grafting of in situ generated 4-pyrrolyphenyldiazonium (Py-PD) on NiTi by two different ways. The first way is the electrografting of Py-PD while the second one is the grafting without electrochemistry at room temperature (spontaneous grafting) or under heating (either conventional heating or induction heating). Both modification routes led to the successful grafting of Py-PD. The hypothesis of a cationic intermediate is proposed for the grafting without electrochemistry since it is thermally activated and the oxidized surface of NiTi is not a reductant. For both modification approaches, the TiO2 surface layer of NiTi has been preserved and the NiTi corrosion resistance improved, an important parameter to preserve/improve the NiTi biocompatibility. The second part of the work is dedicated to the electropolymerization of pyrrole on modified surfaces with the Py-PD as adhesion promoter.

langueAnglais
Pages879-890
Nombre de pages12
journalElectrochimica Acta
Volume211
Les DOIs
étatPublié - 1 sept. 2016

Empreinte digitale

Pyrroles
Electropolymerization
Adhesion
Electrochemistry
Heating
Induction heating
Reducing Agents
Biocompatibility
Corrosion resistance
Temperature

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    title = "Grafting of 4-pyrrolyphenyldiazonium in situ generated on NiTi, an adhesion promoter for pyrrole electropolymerisation?",
    abstract = "The present work investigates the grafting of in situ generated 4-pyrrolyphenyldiazonium (Py-PD) on NiTi by two different ways. The first way is the electrografting of Py-PD while the second one is the grafting without electrochemistry at room temperature (spontaneous grafting) or under heating (either conventional heating or induction heating). Both modification routes led to the successful grafting of Py-PD. The hypothesis of a cationic intermediate is proposed for the grafting without electrochemistry since it is thermally activated and the oxidized surface of NiTi is not a reductant. For both modification approaches, the TiO2 surface layer of NiTi has been preserved and the NiTi corrosion resistance improved, an important parameter to preserve/improve the NiTi biocompatibility. The second part of the work is dedicated to the electropolymerization of pyrrole on modified surfaces with the Py-PD as adhesion promoter.",
    keywords = "electrografting, electropolymerization, In situ generated diazonium, Nitinol, pyrrole",
    author = "A. Jacques and Chehimi, {M. M.} and C. Poleunis and A. Delcorte and J. Delhalle and Zineb Mekhalif",
    year = "2016",
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    doi = "10.1016/j.electacta.2016.06.060",
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    pages = "879--890",
    journal = "Electrochimica Acta",
    issn = "0013-4686",
    publisher = "Elsevier Limited",

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    Grafting of 4-pyrrolyphenyldiazonium in situ generated on NiTi, an adhesion promoter for pyrrole electropolymerisation? / Jacques, A.; Chehimi, M. M.; Poleunis, C.; Delcorte, A.; Delhalle, J.; Mekhalif, Zineb.

    Dans: Electrochimica Acta, Vol 211, 01.09.2016, p. 879-890.

    Résultats de recherche: Contribution à un journal/une revueArticle

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    AU - Jacques, A.

    AU - Chehimi, M. M.

    AU - Poleunis, C.

    AU - Delcorte, A.

    AU - Delhalle, J.

    AU - Mekhalif, Zineb

    PY - 2016/9/1

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    N2 - The present work investigates the grafting of in situ generated 4-pyrrolyphenyldiazonium (Py-PD) on NiTi by two different ways. The first way is the electrografting of Py-PD while the second one is the grafting without electrochemistry at room temperature (spontaneous grafting) or under heating (either conventional heating or induction heating). Both modification routes led to the successful grafting of Py-PD. The hypothesis of a cationic intermediate is proposed for the grafting without electrochemistry since it is thermally activated and the oxidized surface of NiTi is not a reductant. For both modification approaches, the TiO2 surface layer of NiTi has been preserved and the NiTi corrosion resistance improved, an important parameter to preserve/improve the NiTi biocompatibility. The second part of the work is dedicated to the electropolymerization of pyrrole on modified surfaces with the Py-PD as adhesion promoter.

    AB - The present work investigates the grafting of in situ generated 4-pyrrolyphenyldiazonium (Py-PD) on NiTi by two different ways. The first way is the electrografting of Py-PD while the second one is the grafting without electrochemistry at room temperature (spontaneous grafting) or under heating (either conventional heating or induction heating). Both modification routes led to the successful grafting of Py-PD. The hypothesis of a cationic intermediate is proposed for the grafting without electrochemistry since it is thermally activated and the oxidized surface of NiTi is not a reductant. For both modification approaches, the TiO2 surface layer of NiTi has been preserved and the NiTi corrosion resistance improved, an important parameter to preserve/improve the NiTi biocompatibility. The second part of the work is dedicated to the electropolymerization of pyrrole on modified surfaces with the Py-PD as adhesion promoter.

    KW - electrografting

    KW - electropolymerization

    KW - In situ generated diazonium

    KW - Nitinol

    KW - pyrrole

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