Permeability Improvement of Electropolymerized Polypyrrole Films in Water Using Magnetic Hydrophilic Microbeads

Cosnier, Serge; Ding, Shou-Nian; Pellissier, Aymeric; Gorgy, Karine; Holzinger, Michael; Lopez, B.; Merkoçi, Arben

doi:10.1002/elan.200804484

Cited by 5 publications

(3 citation statements)

References 10 publications

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“…A mixture that contains glucose oxidase, amphiphilic pyrrole monomer and microbeads was deposited on a platinum electrode to prepare a glucose biosensor. The electrochemical polymerization of polypyrrole films onto magnetically immobilized hydrophilic microbeads was also carried out [ 71 ].…”

Section: Materials and Technologies In Chemical And Biochemical Sensomentioning

confidence: 99%

State-of-the-Art of (Bio)Chemical Sensor Developments in Analytical Spanish Groups

Plata

Contento

Ríos

2010

Sensors

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(Bio)chemical sensors are one of the most exciting fields in analytical chemistry today. The development of these analytical devices simplifies and miniaturizes the whole analytical process. Although the initial expectation of the massive incorporation of sensors in routine analytical work has been truncated to some extent, in many other cases analytical methods based on sensor technology have solved important analytical problems. Many research groups are working in this field world-wide, reporting interesting results so far. Modestly, Spanish researchers have contributed to these recent developments. In this review, we summarize the more representative achievements carried out for these groups. They cover a wide variety of sensors, including optical, electrochemical, piezoelectric or electro-mechanical devices, used for laboratory or field analyses. The capabilities to be used in different applied areas are also critically discussed.

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Section: Materials and Technologies In Chemical And Biochemical Sensomentioning

confidence: 99%

State-of-the-Art of (Bio)Chemical Sensor Developments in Analytical Spanish Groups

Plata

Contento

Ríos

2010

Sensors

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“…They have been used for various diagnostic applications 1 such as targeting and isolating cells, detecting and quantifying proteins (''agglutination tests'', 2 amplification system for protein detection (''bio-bar-code assay'' 3 )), or for biosensors. [4][5][6][7] More recently, interest has been directed towards the study of the assembling ability of magnetic particles into filaments when subjected to an external magnetic field with the aim of developing a new field of ''macrocolloidal chemistry''. [8][9][10] Indeed, under a magnetic field, magnetic particles self-organize into chains along the direction of the field: the magnetic field induces in each particle a magnetic moment which is collinear to the field, and these moments create attractive and repulsive forces leading to dynamic chainlike aggregates parallel to the field.…”

Section: Introductionmentioning

confidence: 99%

Use of magnetic field for addressing, grafting onto support and actuating permanent magnetic filaments applied to enhanced biodetection

et al. 2010

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International audienceA simple method combining magnetic field and microparticles has been designed for assembling, locating and grafting permanent microfilaments onto a silanised glass surface. Filaments orthogonal to a glass support are implemented by assembling magnetic carboxylatex particles under magnetic field. They exhibit an aspect ratio up to 14. Carboxyl moieties on beads and silanised glass are activated using the carbodiimide method. A further reaction with long chain diamines allows the formation of permanent filaments covalently anchored onto the glass support. Grafted microfilaments can withstand intense washing with detergent solutions under ultrasound. 500 mm diameter filament spots are formed using ferromagnetic tips connected to an electromagnet. After their formation, filaments can be actuated by an external magnetic field: their orientation is tunable in real time within a 2 pi solid angle. Filaments can be biofunctionalised in order to perform biomolecular recognition on the support. We show that nucleic acid probes immobilised onto these filaments hybridize with labelled oligonucleotide targets. Due to an increase of the specific surface, the fluorescence signal of targets is 3-fold higher with filaments than with a planar glass support biofunctionalised with the same oligonucleotides. Our methodology thus provides an easy way to create filaments usable for both actuation and biodetection onto a planar support. We expect our strategy to be compatible with the formation of nanofilaments using nanoparticles

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“…The presence of these microbeads induced an improvement of the polymer permeability in water and allowed to modulate magnetically this permeability. The presence of microbeads inside the biocoating prepared by coimmobilization of enzyme and microbeads via a polypyrrole film, markedly increased the biosensor performance [2]. Another promising composite association was based on clay-polymer combination.…”

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confidence: 99%

Electrogenerated Polymers: A Versatile Platform for the Fabrication of Biosensors and Biofuel Cells

Cosnier

2009

Meet. Abstr.

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Permeability Improvement of Electropolymerized Polypyrrole Films in Water Using Magnetic Hydrophilic Microbeads

Abstract: International audienc

Cited by 5 publications

References 10 publications

State-of-the-Art of (Bio)Chemical Sensor Developments in Analytical Spanish Groups

State-of-the-Art of (Bio)Chemical Sensor Developments in Analytical Spanish Groups

Use of magnetic field for addressing, grafting onto support and actuating permanent magnetic filaments applied to enhanced biodetection

Electrogenerated Polymers: A Versatile Platform for the Fabrication of Biosensors and Biofuel Cells

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