Magnetic Fe2O3-polystyrene/PPy core/shell particles: bioreactivity and self-assembly

Autor: Mangeney, Ma, Fertani, Meriem, Bousalem, Smain, Zhicai, Ma, Ammar, Souad, Herbst, Frédéric, Beaunier, Patricia, Elaissari, Abdelhamid, Chehimi, Mohamed, Mangeney, Claire
Přispěvatelé: Interfaces, Traitements, Organisation et Dynamique des Systèmes (ITODYS (UMR_7086)), Université Paris Diderot - Paris 7 (UPD7)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Réactivité de Surface (LRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'automatique et de génie des procédés (LAGEP), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Supérieure de Chimie Physique Électronique de Lyon (CPE)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie et des Matériaux Paris-Est (ICMPE), Institut de Chimie du CNRS (INC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Université de Lyon-Université de Lyon-École Supérieure Chimie Physique Électronique de Lyon-Centre National de la Recherche Scientifique (CNRS), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)
Rok vydání: 2007
Předmět:
Materials science
Polymers
Nanoparticle
Biocompatible Materials
02 engineering and technology
010402 general chemistry
Polypyrrole
01 natural sciences
Ferric Compounds
chemistry.chemical_compound
Coated Materials
Biocompatible
Microscopy
Electron
Transmission
Polymer chemistry
Spectroscopy
Fourier Transform Infrared
Electrochemistry
General Materials Science
Pyrroles
conducting polymer
composite
Spectroscopy
Conductive polymer
magnetic particles
Surfaces and Interfaces
[CHIM.MATE]Chemical Sciences/Material chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microspheres
0104 chemical sciences
[CHIM.POLY]Chemical Sciences/Polymers
chemistry
Chemical engineering
submicron
Microscopy
Electron
Scanning
Magnetic nanoparticles
Particle
Nanoparticles
Polystyrenes
Polystyrene
Particle size
0210 nano-technology
Superparamagnetism
Zdroj: Langmuir
Langmuir, 2007, 23 (22), pp.10940-10949. ⟨10.1021/la700492s⟩
Langmuir, American Chemical Society, 2007, 23 (22), pp.10940-10949. ⟨10.1021/la700492s⟩
ISSN: 0743-7463
1520-5827
Popis: International audience; This paper describes the synthesis of new magnetic, reactive polystyrene/polypyrrole core/shell latex particles. The core consists of a polystyrene microsphere containing gamma-Fe2O3 superparamagnetic nanoparticles (PSmag), and the shell is made of reactive N-carboxylic acid-functionalized polypyrrole (PPyCOOH). These PSmag-PPyCOOH latex particles, average diameter 220 nm, were prepared by copolymerization of pyrrole (Py) and the active carboxyl-functionalized pyrrole (PyCOOH) in the presence of PSmag particles. PNVP was used as a steric stabilizer. The functionalized polypyrrole-coated PSmag particles were characterized in terms of their particle size, surface morphology, chemical composition, and electrochemical and magnetic properties using transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), cyclic voltammetry, and SQUID magnetometry. Activation of the particle surface carboxyl groups was achieved using 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide (EDC) and N-hydroxysuccinimide (NHS), which helps transform the carboxyl groups into activated ester groups (NSE). The activated particles, PSmag-PPyNSE, were further evaluated as bioadsorbents of biotin used as a model biomolecule. It was shown that biotin was immobilized at the surface of the PSmag-PPyNSE particles by forming interfacial amide groups. The assemblies of PSmag-PPyCOOH particles on glass plates were further investigated. When no magnetic field is applied, the particles assemble into 3D colloidal crystals. In contrast, under a magnetic field, one-particle-thick chains gathered in hedgehog-like architectures are obtained. Furthermore, PSmag-PPyCOOH coated ITO electrodes were shown to be electroactive and electrochemically stable, thus offering potentialities for creating novel high-specific-area materials for biosensing devices where the conducting polymer component would act as the transducer through its conductive properties.
Databáze: OpenAIRE
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