Responsive polymers end-tethered in solid-state nanochannels: When nanoconfinement really matters
Solid state nanochannels modified with supramolecular architectures are a new and interesting class of stimuli-responsive nanofluidic element. Their fundamental understanding requires describing the behavior of soft-materials in confined geometries and its responses to changes in solution conditions...
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2010
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027863_v132_n35_p12404_Tagliazucchi http://hdl.handle.net/20.500.12110/paper_00027863_v132_n35_p12404_Tagliazucchi |
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paper:paper_00027863_v132_n35_p12404_Tagliazucchi2023-06-08T14:22:47Z Responsive polymers end-tethered in solid-state nanochannels: When nanoconfinement really matters Acid-base equilibria Charge regulation Charge state Confined geometries Conformational behavior Conformational change Experimental observation Molecular calculations Molecular theory Nano channels Nanoconfinement effects Nanoconfinements PH-dependent Polyelectrolyte brushes Polymer chains Polymer segments Repulsive interactions Responsive polymer Solution conditions Stimuli-responsive Supramolecular architectures Van der waals Van der Waals forces Polymers nanochannel polyelectrolyte polymer article chemical interaction conformational transition geometry ion conductance nanoanalysis nanofluidics pH solid state static electricity stimulus response supramolecular chemistry Electric Conductivity Electrolytes Hydrogen-Ion Concentration Molecular Conformation Nanostructures Nanotechnology Polyvinyls Solid state nanochannels modified with supramolecular architectures are a new and interesting class of stimuli-responsive nanofluidic element. Their fundamental understanding requires describing the behavior of soft-materials in confined geometries and its responses to changes in solution conditions. Here, a nanochannel modified with a polyelectrolyte brush is studied with a molecular theory that incorporates the conformational behavior of the polymers, electrostatic, van der Waals, and repulsive interactions coupled with the ability of the polymer segments to regulate their charge through acid-base equilibrium. The theory predicts pH-dependent ionic conductivity in excellent agreement with experimental observations. The polymer chains undergo large conformational changes triggered by variations in the outer solution environment and the conductivity of the device is shown to be controlled by the charge state of the polymer. The degree of polymer charge is largely affected by charge regulation and nanoconfinement effects. The molecular calculations show that the apparent pKa inside the pore departs from that in solution when increasing the curvature of the nanochannel. © 2010 American Chemical Society. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027863_v132_n35_p12404_Tagliazucchi http://hdl.handle.net/20.500.12110/paper_00027863_v132_n35_p12404_Tagliazucchi |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Acid-base equilibria Charge regulation Charge state Confined geometries Conformational behavior Conformational change Experimental observation Molecular calculations Molecular theory Nano channels Nanoconfinement effects Nanoconfinements PH-dependent Polyelectrolyte brushes Polymer chains Polymer segments Repulsive interactions Responsive polymer Solution conditions Stimuli-responsive Supramolecular architectures Van der waals Van der Waals forces Polymers nanochannel polyelectrolyte polymer article chemical interaction conformational transition geometry ion conductance nanoanalysis nanofluidics pH solid state static electricity stimulus response supramolecular chemistry Electric Conductivity Electrolytes Hydrogen-Ion Concentration Molecular Conformation Nanostructures Nanotechnology Polyvinyls |
| spellingShingle |
Acid-base equilibria Charge regulation Charge state Confined geometries Conformational behavior Conformational change Experimental observation Molecular calculations Molecular theory Nano channels Nanoconfinement effects Nanoconfinements PH-dependent Polyelectrolyte brushes Polymer chains Polymer segments Repulsive interactions Responsive polymer Solution conditions Stimuli-responsive Supramolecular architectures Van der waals Van der Waals forces Polymers nanochannel polyelectrolyte polymer article chemical interaction conformational transition geometry ion conductance nanoanalysis nanofluidics pH solid state static electricity stimulus response supramolecular chemistry Electric Conductivity Electrolytes Hydrogen-Ion Concentration Molecular Conformation Nanostructures Nanotechnology Polyvinyls Responsive polymers end-tethered in solid-state nanochannels: When nanoconfinement really matters |
| topic_facet |
Acid-base equilibria Charge regulation Charge state Confined geometries Conformational behavior Conformational change Experimental observation Molecular calculations Molecular theory Nano channels Nanoconfinement effects Nanoconfinements PH-dependent Polyelectrolyte brushes Polymer chains Polymer segments Repulsive interactions Responsive polymer Solution conditions Stimuli-responsive Supramolecular architectures Van der waals Van der Waals forces Polymers nanochannel polyelectrolyte polymer article chemical interaction conformational transition geometry ion conductance nanoanalysis nanofluidics pH solid state static electricity stimulus response supramolecular chemistry Electric Conductivity Electrolytes Hydrogen-Ion Concentration Molecular Conformation Nanostructures Nanotechnology Polyvinyls |
| description |
Solid state nanochannels modified with supramolecular architectures are a new and interesting class of stimuli-responsive nanofluidic element. Their fundamental understanding requires describing the behavior of soft-materials in confined geometries and its responses to changes in solution conditions. Here, a nanochannel modified with a polyelectrolyte brush is studied with a molecular theory that incorporates the conformational behavior of the polymers, electrostatic, van der Waals, and repulsive interactions coupled with the ability of the polymer segments to regulate their charge through acid-base equilibrium. The theory predicts pH-dependent ionic conductivity in excellent agreement with experimental observations. The polymer chains undergo large conformational changes triggered by variations in the outer solution environment and the conductivity of the device is shown to be controlled by the charge state of the polymer. The degree of polymer charge is largely affected by charge regulation and nanoconfinement effects. The molecular calculations show that the apparent pKa inside the pore departs from that in solution when increasing the curvature of the nanochannel. © 2010 American Chemical Society. |
| title |
Responsive polymers end-tethered in solid-state nanochannels: When nanoconfinement really matters |
| title_short |
Responsive polymers end-tethered in solid-state nanochannels: When nanoconfinement really matters |
| title_full |
Responsive polymers end-tethered in solid-state nanochannels: When nanoconfinement really matters |
| title_fullStr |
Responsive polymers end-tethered in solid-state nanochannels: When nanoconfinement really matters |
| title_full_unstemmed |
Responsive polymers end-tethered in solid-state nanochannels: When nanoconfinement really matters |
| title_sort |
responsive polymers end-tethered in solid-state nanochannels: when nanoconfinement really matters |
| publishDate |
2010 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027863_v132_n35_p12404_Tagliazucchi http://hdl.handle.net/20.500.12110/paper_00027863_v132_n35_p12404_Tagliazucchi |
| _version_ |
1768545397131706368 |