Reversible modulation of the redox activity in conducting polymer nanofilms induced by hydrophobic collapse of a surface-grafted polyelectrolyte
We present the covalent modification of a Pani-like conducting polymer (polyaminobenzylamine, PABA) by grafting of a polyelectrolyte brush (poly [2-(methacryloyloxy)-ethyl-trimethylammonium chloride], PMETAC). As PABA has extra pendant amino moieties, the grafting procedure does not affect the backb...
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2018
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219797_v518_n_p92_Fenoy http://hdl.handle.net/20.500.12110/paper_00219797_v518_n_p92_Fenoy |
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paper:paper_00219797_v518_n_p92_Fenoy2023-06-08T14:44:59Z Reversible modulation of the redox activity in conducting polymer nanofilms induced by hydrophobic collapse of a surface-grafted polyelectrolyte Anion responsiveness Conducting polymers Nanoarchitectonics Polyaniline Polymer brushes Chlorine compounds Electronic structure Grafting (chemical) Inorganic compounds Ions Nanoscience Negative ions Polyaniline Polyelectrolytes Redox reactions Solutions Covalent modifications ELectrochemical methods Electrochemical response Hydrophobic collapse Nanoarchitectonics Polyelectrolyte brushes Polymer brushes Polymer building blocks Conducting polymers nanofilm nitrogen perchlorate polyaminobenzylamine polyelectrolyte polymer quaternary ammonium derivative unclassified drug aqueous solution Article contact angle electrochemical analysis hydrophobicity modulation priority journal We present the covalent modification of a Pani-like conducting polymer (polyaminobenzylamine, PABA) by grafting of a polyelectrolyte brush (poly [2-(methacryloyloxy)-ethyl-trimethylammonium chloride], PMETAC). As PABA has extra pendant amino moieties, the grafting procedure does not affect the backbone nitrogen atoms that are implicated in the electronic structure of the conducting polymers. Moreover, perchlorate anions interact very strongly with the quaternary ammonium pendant groups of PMETAC through ion pairing. Therefore, the grafting does not only keep the electroactivity of PABA in aqueous solutions but it adds the ion-actuation properties of the PMETAC brush to the modified electrode as demonstrated by contact angle measurements and electrochemical methods. In this way, the conjugation of the electron transfer properties of the conducting polymer with the anion responsiveness of the integrated brush renders perchlorate actuation of the electrochemical response. These results constitute a rational integration of nanometer-sized polymer building blocks that yields synergism of functionalities and illustrate the potentialities of nanoarchitectonics for pushing the limits of soft material science into the nanoworld. © 2018 Elsevier Inc. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219797_v518_n_p92_Fenoy http://hdl.handle.net/20.500.12110/paper_00219797_v518_n_p92_Fenoy |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Anion responsiveness Conducting polymers Nanoarchitectonics Polyaniline Polymer brushes Chlorine compounds Electronic structure Grafting (chemical) Inorganic compounds Ions Nanoscience Negative ions Polyaniline Polyelectrolytes Redox reactions Solutions Covalent modifications ELectrochemical methods Electrochemical response Hydrophobic collapse Nanoarchitectonics Polyelectrolyte brushes Polymer brushes Polymer building blocks Conducting polymers nanofilm nitrogen perchlorate polyaminobenzylamine polyelectrolyte polymer quaternary ammonium derivative unclassified drug aqueous solution Article contact angle electrochemical analysis hydrophobicity modulation priority journal |
| spellingShingle |
Anion responsiveness Conducting polymers Nanoarchitectonics Polyaniline Polymer brushes Chlorine compounds Electronic structure Grafting (chemical) Inorganic compounds Ions Nanoscience Negative ions Polyaniline Polyelectrolytes Redox reactions Solutions Covalent modifications ELectrochemical methods Electrochemical response Hydrophobic collapse Nanoarchitectonics Polyelectrolyte brushes Polymer brushes Polymer building blocks Conducting polymers nanofilm nitrogen perchlorate polyaminobenzylamine polyelectrolyte polymer quaternary ammonium derivative unclassified drug aqueous solution Article contact angle electrochemical analysis hydrophobicity modulation priority journal Reversible modulation of the redox activity in conducting polymer nanofilms induced by hydrophobic collapse of a surface-grafted polyelectrolyte |
| topic_facet |
Anion responsiveness Conducting polymers Nanoarchitectonics Polyaniline Polymer brushes Chlorine compounds Electronic structure Grafting (chemical) Inorganic compounds Ions Nanoscience Negative ions Polyaniline Polyelectrolytes Redox reactions Solutions Covalent modifications ELectrochemical methods Electrochemical response Hydrophobic collapse Nanoarchitectonics Polyelectrolyte brushes Polymer brushes Polymer building blocks Conducting polymers nanofilm nitrogen perchlorate polyaminobenzylamine polyelectrolyte polymer quaternary ammonium derivative unclassified drug aqueous solution Article contact angle electrochemical analysis hydrophobicity modulation priority journal |
| description |
We present the covalent modification of a Pani-like conducting polymer (polyaminobenzylamine, PABA) by grafting of a polyelectrolyte brush (poly [2-(methacryloyloxy)-ethyl-trimethylammonium chloride], PMETAC). As PABA has extra pendant amino moieties, the grafting procedure does not affect the backbone nitrogen atoms that are implicated in the electronic structure of the conducting polymers. Moreover, perchlorate anions interact very strongly with the quaternary ammonium pendant groups of PMETAC through ion pairing. Therefore, the grafting does not only keep the electroactivity of PABA in aqueous solutions but it adds the ion-actuation properties of the PMETAC brush to the modified electrode as demonstrated by contact angle measurements and electrochemical methods. In this way, the conjugation of the electron transfer properties of the conducting polymer with the anion responsiveness of the integrated brush renders perchlorate actuation of the electrochemical response. These results constitute a rational integration of nanometer-sized polymer building blocks that yields synergism of functionalities and illustrate the potentialities of nanoarchitectonics for pushing the limits of soft material science into the nanoworld. © 2018 Elsevier Inc. |
| title |
Reversible modulation of the redox activity in conducting polymer nanofilms induced by hydrophobic collapse of a surface-grafted polyelectrolyte |
| title_short |
Reversible modulation of the redox activity in conducting polymer nanofilms induced by hydrophobic collapse of a surface-grafted polyelectrolyte |
| title_full |
Reversible modulation of the redox activity in conducting polymer nanofilms induced by hydrophobic collapse of a surface-grafted polyelectrolyte |
| title_fullStr |
Reversible modulation of the redox activity in conducting polymer nanofilms induced by hydrophobic collapse of a surface-grafted polyelectrolyte |
| title_full_unstemmed |
Reversible modulation of the redox activity in conducting polymer nanofilms induced by hydrophobic collapse of a surface-grafted polyelectrolyte |
| title_sort |
reversible modulation of the redox activity in conducting polymer nanofilms induced by hydrophobic collapse of a surface-grafted polyelectrolyte |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219797_v518_n_p92_Fenoy http://hdl.handle.net/20.500.12110/paper_00219797_v518_n_p92_Fenoy |
| _version_ |
1768543498269622272 |