PANI‐Modified Ti‐Doped CVD Diamond As Promising Conductive Platform to Mimic Bioelectricity Functions
Abstract This study is devoted to synthesizing and modifying conductive Ti‐doped diamond (TiD) biosubstrates with polyaniline (PANI) to provide a soft interface with high ionic conductivity and charge storage capacity for developing advanced scaffolds and implantable electrode materials. The diamond...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2021-12-01
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| Series: | Advanced Materials Interfaces |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/admi.202101401 |
| _version_ | 1797763896149278720 |
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| author | Sara Politi Silvia Battistoni Rocco Carcione Luca Montaina Salvatore Macis Stefano Lupi Emanuela Tamburri |
| author_facet | Sara Politi Silvia Battistoni Rocco Carcione Luca Montaina Salvatore Macis Stefano Lupi Emanuela Tamburri |
| author_sort | Sara Politi |
| collection | DOAJ |
| description | Abstract This study is devoted to synthesizing and modifying conductive Ti‐doped diamond (TiD) biosubstrates with polyaniline (PANI) to provide a soft interface with high ionic conductivity and charge storage capacity for developing advanced scaffolds and implantable electrode materials. The diamond supports are prepared by an ad‐hoc chemical vapor deposition methodology allowing for the synthesis and contemporary doping of diamond lattice. An optimized potentiostatic electropolymerization method assures the growth of a homogenous PANI coating on a diamond surface. Scanning electron microscopy, atomic force microscopy, Raman, and reflectance infrared spectroscopy characterizations guarantee the production of nanostructured diamond layers with high surface electrical conductivity and good phase quality as well as of a rough polymer film in the conductive emeraldine form. Cyclic voltammetry and electrochemical impedance spectroscopy measurements point out a quasi‐reversible electron transfer among polymer chains ruled by the bulky dodecyl sulfate anion chosen as polymer dopant. This induces a cation exchange with the solution upon backbone redox reactions. The capability of the PANI‐TiD system to transduce ionic current into electronic current and vice versa via redox reaction with the surroundings can be reliably exploited to reproduce electrical stimulation processes through which to mimic the original bioelectricity functions of the human body for advanced biomedical applications. |
| first_indexed | 2024-03-12T19:47:55Z |
| format | Article |
| id | doaj.art-2777f3c7d1d041408e30b1993476b181 |
| institution | Directory Open Access Journal |
| issn | 2196-7350 |
| language | English |
| last_indexed | 2024-03-12T19:47:55Z |
| publishDate | 2021-12-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Materials Interfaces |
| spelling | doaj.art-2777f3c7d1d041408e30b1993476b1812023-08-02T03:24:30ZengWiley-VCHAdvanced Materials Interfaces2196-73502021-12-01824n/an/a10.1002/admi.202101401PANI‐Modified Ti‐Doped CVD Diamond As Promising Conductive Platform to Mimic Bioelectricity FunctionsSara Politi0Silvia Battistoni1Rocco Carcione2Luca Montaina3Salvatore Macis4Stefano Lupi5Emanuela Tamburri6Dip.to di Scienze e Tecnologie Chimiche ‐ Università degli Studi di Roma “Tor Vergata” – Via della Ricerca Scientifica Rome 00133 ItalyConsiglio Nazionale delle Ricerche Institute of Materials for Electronics and Magnetism (CNR‐IMEM) Parco Area delle Scienze 37A Parma 43124 ItalyDip.to di Scienze e Tecnologie Chimiche ‐ Università degli Studi di Roma “Tor Vergata” – Via della Ricerca Scientifica Rome 00133 ItalyDip.to di Scienze e Tecnologie Chimiche ‐ Università degli Studi di Roma “Tor Vergata” – Via della Ricerca Scientifica Rome 00133 ItalyDip.to di Fisica ‐ Università degli Studi di Roma “Sapienza” ‐ Piazzale Aldo Moro 5 Rome 00185 ItalyCNR‐IOM and Dip.to di Fisica Università degli Studi di Roma “Sapienza,” Piazzale Aldo Moro 5 Rome 00185 ItalyDip.to di Scienze e Tecnologie Chimiche ‐ Università degli Studi di Roma “Tor Vergata” – Via della Ricerca Scientifica Rome 00133 ItalyAbstract This study is devoted to synthesizing and modifying conductive Ti‐doped diamond (TiD) biosubstrates with polyaniline (PANI) to provide a soft interface with high ionic conductivity and charge storage capacity for developing advanced scaffolds and implantable electrode materials. The diamond supports are prepared by an ad‐hoc chemical vapor deposition methodology allowing for the synthesis and contemporary doping of diamond lattice. An optimized potentiostatic electropolymerization method assures the growth of a homogenous PANI coating on a diamond surface. Scanning electron microscopy, atomic force microscopy, Raman, and reflectance infrared spectroscopy characterizations guarantee the production of nanostructured diamond layers with high surface electrical conductivity and good phase quality as well as of a rough polymer film in the conductive emeraldine form. Cyclic voltammetry and electrochemical impedance spectroscopy measurements point out a quasi‐reversible electron transfer among polymer chains ruled by the bulky dodecyl sulfate anion chosen as polymer dopant. This induces a cation exchange with the solution upon backbone redox reactions. The capability of the PANI‐TiD system to transduce ionic current into electronic current and vice versa via redox reaction with the surroundings can be reliably exploited to reproduce electrical stimulation processes through which to mimic the original bioelectricity functions of the human body for advanced biomedical applications.https://doi.org/10.1002/admi.202101401bioelectronicsbiomimetic materialschemical vapor deposition diamondpolyaniline (PANI) |
| spellingShingle | Sara Politi Silvia Battistoni Rocco Carcione Luca Montaina Salvatore Macis Stefano Lupi Emanuela Tamburri PANI‐Modified Ti‐Doped CVD Diamond As Promising Conductive Platform to Mimic Bioelectricity Functions Advanced Materials Interfaces bioelectronics biomimetic materials chemical vapor deposition diamond polyaniline (PANI) |
| title | PANI‐Modified Ti‐Doped CVD Diamond As Promising Conductive Platform to Mimic Bioelectricity Functions |
| title_full | PANI‐Modified Ti‐Doped CVD Diamond As Promising Conductive Platform to Mimic Bioelectricity Functions |
| title_fullStr | PANI‐Modified Ti‐Doped CVD Diamond As Promising Conductive Platform to Mimic Bioelectricity Functions |
| title_full_unstemmed | PANI‐Modified Ti‐Doped CVD Diamond As Promising Conductive Platform to Mimic Bioelectricity Functions |
| title_short | PANI‐Modified Ti‐Doped CVD Diamond As Promising Conductive Platform to Mimic Bioelectricity Functions |
| title_sort | pani modified ti doped cvd diamond as promising conductive platform to mimic bioelectricity functions |
| topic | bioelectronics biomimetic materials chemical vapor deposition diamond polyaniline (PANI) |
| url | https://doi.org/10.1002/admi.202101401 |
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