References of "Voccia, Samuel"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailSequential electrografting and ring opening metathesis polymerization: a strategy for the tailoring of conductive surfaces
Voccia, Samuel; Claes, Michael; Jérôme, Robert ULg et al

in Macromolecular Rapid Communications (2005), 26(10), 779-783

An electrografting technique has been combined with ring-opening metathesis polymerization (ROMP). Poly(allyl methacrylate) chains have been chemisorbed onto steel and carbon plates under an appropriate ... [more ▼]

An electrografting technique has been combined with ring-opening metathesis polymerization (ROMP). Poly(allyl methacrylate) chains have been chemisorbed onto steel and carbon plates under an appropriate cathodic potential in N,N-dimethylformamide. The allyl moieties have been converted into Ru catalysts active in ROMP of norbornene and its derivatives. Initiation of ROMP from the surface is an efficient strategy to prepare strongly adhering coatings of tunable thickness and hydrophilic/hydrophobic balance, depending on the norbornene derivative polymerized at the surface. [less ▲]

Detailed reference viewed: 28 (0 ULg)
See detailProcess for depositing strong adherend polymer coating onto an electrically conductive surface
Bertrand, Olivier; Jérôme, Robert ULg; Gautier, Sandrine et al

Patent (2004)

Process for depositing by electrografting a strong adherent polymer coating onto an electrically conductive surface comprising an electrochemical grafting at the surface of an active monomer for forming a ... [more ▼]

Process for depositing by electrografting a strong adherent polymer coating onto an electrically conductive surface comprising an electrochemical grafting at the surface of an active monomer for forming a primer coating P onto said surface and having as general formula: X0 (meth)acrylate wherein X is either part of a preformed polymer or is an intermediate agent for polyaddition reaction or is an anchoring group for attachment of a molecule having at least one complementary reactive group. Such process allows formation of new primer by one-step electro-grafting of a reactive polymer called macromonomer.; Such process also allows further modification of an initial electrografted polymer (called primer coating) to increase the coating thickness by the so-called grafting-from technique i.e. polymerization of a second monomer or to introduce other types of polymers(also called top coating) via covalent attachment between the primer and the top coating through the X ester group by the so called grafting onto technique. Such process also allows to graft onto the primer coating compounds like functional polymer, peptide, protein, oligonucleotide, dyes, drugs, anti-bacterian compounds. [less ▲]

Detailed reference viewed: 26 (7 ULg)
Full Text
Peer Reviewed
See detailSynthesis of copolymer brushes endowed with adhesion to stainless steel surfaces and antibacterial properties by controlled nitroxide-mediated radical polymerization
Ignatova, Miléna; Voccia, Samuel; Gilbert, Bernard ULg et al

in Langmuir (2004), 20(24), 10718-10726

Novel copolymer brushes have been synthesized by a two-step "grafting from" method that consists of the electrografting of poly(2-phenyl-2-(2,2,6,6-tetramethyl-piperidin-1-yloxy)-ethylacrylate) onto ... [more ▼]

Novel copolymer brushes have been synthesized by a two-step "grafting from" method that consists of the electrografting of poly(2-phenyl-2-(2,2,6,6-tetramethyl-piperidin-1-yloxy)-ethylacrylate) onto stainless steel, followed by the nitroxide-mediated radical polymerization of 2-(dimethylamino ethyl)acrylate and styrene or n-butyl acrylate, initiated from the electrografted polyacrylate chains. The grafted copolymers were quaternized in order to endow them with antibacterial properties. Peeling tests have confirmed the strong adhesion of the grafted copolymer onto the stainless steel substrate. Quartz crystal microbalance experiments have proven that fibrinogen adhesion is lower on the hydrophilic quaternized films compared to the nonionic counterpart. Such quaternized copolymers exhibit significant antibacterial activity against the Gram-positive bacteria S. aureus and the Gram-negative bacteria E. coli. [less ▲]

Detailed reference viewed: 33 (8 ULg)
Full Text
Peer Reviewed
See detailPreparation of poly(epsilon-caprolactone) brushes at the surface of conducting substrates
Voccia, Samuel; Bech, Loïc; Gilbert, Bernard ULg et al

in Langmuir (2004), 20(24), 10670-10678

This paper reports on the preparation of polyester brushes at the surface of electrically conducting materials. A two-step strategy has been worked out that consists of the electropolymerization of an ... [more ▼]

This paper reports on the preparation of polyester brushes at the surface of electrically conducting materials. A two-step strategy has been worked out that consists of the electropolymerization of an acrylate under a cathodic potential, such that the polyacrylate layer is chemisorbed at the surface. In a second step, either preformed poly(epsilon-caprolactone) chains are grafted onto the polyacrylate sublayer or the ring-opening polymerization of epsilon-caprolactone is initiated from it. [less ▲]

Detailed reference viewed: 21 (1 ULg)
Full Text
See detailProcess for depositing strong adherend polymer coating onto an electrically conductive surface
Bertrand, Olivier; Jérôme, Robert ULg; Gautier, Sandrine et al

Patent (2004)

Process for depositing by electrografting a strong adherent polymer coating onto an electrically conductive surface comprising the step of electrochemical grafting of an active monomer for forming a ... [more ▼]

Process for depositing by electrografting a strong adherent polymer coating onto an electrically conductive surface comprising the step of electrochemical grafting of an active monomer for forming a primer coating P onto the surface and having as general formula: X0 (meth)acrylate wherein X is either part of a preformed polymer or is an intermediate agent for polyaddition reaction or is an anchoring group for attachment of a molecule having at least one complementary reactive group. Such process allows formation of new primer by one-step electro-grafting of a macromonomer. Such process also allows further modification of an initial electrografted polymer to increase the coating thickness by the grafting-from technique. Such process also allows to graft onto the primer coating compounds like functional polymer, peptide, protein, oligonucleotide, dyes, drugs, anti-bacterian compounds. [less ▲]

Detailed reference viewed: 9 (3 ULg)
Full Text
See detailProcess for depositing strong adherend polymer coating onto an electrically conductive surface
Bertrand, Oliver; Jérôme, Robert ULg; Gautier, Sandrine et al

Patent (2004)

Process for depositing by electrografting a strong adherent polymer coating onto an electrically conductive surface comprising an electrochemical grafting at the surface of an active monomer for forming a ... [more ▼]

Process for depositing by electrografting a strong adherent polymer coating onto an electrically conductive surface comprising an electrochemical grafting at the surface of an active monomer for forming a primer coating P onto said surface and having as general formula: X0 (meth)acrylate wherein X is either part of a preformed polymer or is an intermediate agent for polyaddition reaction or is an anchoring group for attachment of a molecule having at least one complementary reactive group. Such process allows formation of new primer by one-step electro-grafting of a reactive polymer called macromonomer.; Such process also allows further modification of an initial electrografted polymer (called primer coating) to increase the coating thickness by the so-called grafting-from technique i.e. polymerization of a second monomer or to introduce other types of polymers(also called top coating) via covalent attachment between the primer and the top coating through the X ester group by the so called grafting onto technique. Such process also allows to graft onto the primer coating compounds like functional polymer, peptide, protein, oligonucleotide, dyes, drugs, anti-bacterian compounds. [less ▲]

Detailed reference viewed: 6 (1 ULg)
Full Text
Peer Reviewed
See detailPreparation of reactive surfaces by electrografting
Jérôme, Christine ULg; Gabriel, Sabine ULg; Voccia, Samuel et al

in Chemical Communications (2003), (19), 2500-2501

The electrografting process has been applied to a new monomer in order to induce reactivity to the surface of various conducting substrates which are then appropriate for the anchoring of a large variety ... [more ▼]

The electrografting process has been applied to a new monomer in order to induce reactivity to the surface of various conducting substrates which are then appropriate for the anchoring of a large variety of molecules (catalysts, proteins, amino-polymers etc.). [less ▲]

Detailed reference viewed: 20 (4 ULg)
Full Text
Peer Reviewed
See detailPolymer coating of steel by a combination of electrografting and atom-transfer radical polymerization
Claes, Michaël; Voccia, Samuel; Detrembleur, Christophe ULg et al

in Macromolecules (2003), 36(16), 5926-5933

Cathodic electrografting of poly(2-chloropropionate ethyl acrylate) (poly[cPEA]) onto steel followed by the styrene grafting-from by atom transfer radical polymerization (ATRP) is an efficient strategy to ... [more ▼]

Cathodic electrografting of poly(2-chloropropionate ethyl acrylate) (poly[cPEA]) onto steel followed by the styrene grafting-from by atom transfer radical polymerization (ATRP) is an efficient strategy to impart strong adhesion to polystyrene films onto the electrically conductive substrate. Electrografting of poly(cPEA) chains at an appropriate potential and persistence of the activated chloride in the grafted chains were confirmed by XPS. Polystyrene deposition by ATRP with a ruthenium-based catalyst was analyzed by scanning electron microscopy and Raman spectroscopy. Adhesion of the polystyrene layer to the substrate is so strong that it cannot be detached by standard Scotch brand tapes. Moreover, local thermal analysis showed a loss of mobility for the PS chains tethered at the surface. [less ▲]

Detailed reference viewed: 38 (5 ULg)
See detailNovel biocompatible coatings strongly adhering onto stainless steel and carbon fibers, endowed with antibacterial properties
Ignatova, Miléna; Labaye, David-Emmanuel; Voccia, Samuel et al

Poster (2003, May 16)

Detailed reference viewed: 10 (1 ULg)
See detailSurface modification of metallic stents by strongly adhering aliphatic polyesters
Aqil, Abdelhafid ULg; Voccia, Samuel; Labaye, David-Emmanuel et al

Poster (2003, May 16)

Detailed reference viewed: 15 (3 ULg)
Full Text
Peer Reviewed
See detailControlled free radical polymerization of styrene initiated from alkoxyamine attached to polyacrylate chemisorbed onto conducting surfaces
Voccia, Samuël; Jérôme, Christine ULg; Detrembleur, Christophe ULg et al

in Chemistry of Materials (2003), 15(4), 923-927

A new inimer that associates an alkoxyamine, which is an initiator/mediator in nitroxide mediated radical polymerization (NMP), and a polymerizable acrylate has been synthesized and used in a two-step ... [more ▼]

A new inimer that associates an alkoxyamine, which is an initiator/mediator in nitroxide mediated radical polymerization (NMP), and a polymerizable acrylate has been synthesized and used in a two-step "grafting-from" method. The acrylate has been first electropolymerized under a cathodic potential, such that the polymer is chemisorbed on the cathode. NMP of styrene has then been initiated from the electrografted polyacrylate chains with formation of polystyrene with controlled molecular weight and narrow polydispersity. [less ▲]

Detailed reference viewed: 32 (5 ULg)
Full Text
See detailProcess for depositing strong adherend polymer coating onto an electrically conductive surface
Detrembleur, Christophe ULg; Lou, Xudong; Voccia, Samuel et al

Patent (2002)

Process for depositing by electrografting a strong adherent polymer coating onto an electrically conductive surface comprising an electrochemical grafting at the surface of an active monomer for forming a ... [more ▼]

Process for depositing by electrografting a strong adherent polymer coating onto an electrically conductive surface comprising an electrochemical grafting at the surface of an active monomer for forming a primer coating P onto said surface and having as general formula: X0 (meth)acrylate wherein X is either part of a preformed polymer or is an intermediate agent for polyaddition reaction or is an anchoring group for attachment of a molecule having at least one complementary reactive group. Such process allows formation of new primer by one-step electro-grafting of a reactive polymer called macromonomer.; Such process also allows further modification of an initial electrografted polymer (called primer coating) to increase the coating thickness by the so-called grafting-from technique i.e. polymerization of a second monomer or to introduce other types of polymers(also called top coating) via covalent attachment between the primer and the top coating through the X ester group by the so called grafting onto technique. Such process also allows to graft onto the primer coating compounds like functional polymer, peptide, protein, oligonucleotide, dyes, drugs, anti-bacterian compounds. [less ▲]

Detailed reference viewed: 34 (11 ULg)
Full Text
See detailProcess for depositing strong adherend polymer coating onto an electrically conductive surface
Bertrand, Olivier; Jérôme, Robert ULg; Gautier, Sandrine et al

Patent (2002)

Detailed reference viewed: 44 (2 ULg)