Catherine Branger

Catherine Branger
Université de Toulon | USTV · MAPIEM - Matériaux Polymères Interfaces Environnement Marin - EA 4323

PhD - Maître de Conférences

About

62
Publications
7,451
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1,452
Citations
Citations since 2017
26 Research Items
747 Citations
2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
Introduction
Catherine Branger currently works at the MAPIEM - Matériaux Polymères Interfaces Environnement Marin - EA 4323, Université de Toulon. Catherine does research in Polymer Chemistry, Analytical Chemistry and Organic Chemistry.
Additional affiliations
September 1998 - present
Université de Toulon
Position
  • Professor (Associate)

Publications

Publications (62)
Article
Full-text available
In this work, an original ion-imprinted polymer (IIP) was synthetized for the highly selective removal of Ni(II) ions in neutral and acidic media. First a novel functional monomer (AMP-MMA) was synthetized through the amidation of 2-(aminomethyl)pyridine (AMP) with methacryloylchloride. Following Ni(II)/AMP-MMA complex formation study, the Ni(II)-I...
Article
Quantification of trace levels of metal ions is an important issue in terms of health and environment safety. Ion-imprinted polymers (IIPs) are synthetic materials that present excellent selectivity properties. Therefore, when combined with electrochemical sensors, proven to be low-cost and time-efficient, they can act as remarkably selective recep...
Article
New fluorescent ion-imprinted polymers (IIPs) specific for Pb(II) detection were synthesized by precipitation polymerization. The fluorescent activity of the IIPs was provided by a fluorescent functional monomer, ANQ-ST, based on the chelating 5-amino-8-hydroxyquinoline moiety coupled to anthracene and a styrenic group. Various synthesis parameters...
Article
Full-text available
Because of its many advantages, solid phase extraction (SPE) is considered to be the best process for removing heavy metals from water. Ion-imprinted polymers (IIPs) have been broadly used in the last decade as SPE adsorbents for the retention of metals ions from aqueous solutions. This itemized review list thorough literature over the last decade...
Article
A Moroccan bentonite was activated by sodium carbonate (Na-Be), and by a combined chemical and thermal activation (Na-Be450). The materials characterization was performed by XRD, EDS, FTIR, SEM and porosity measurements. The efficiency of Na-Be and Na-Be450 as low-cost adsorbents to remove nickel and silver from aqueous solution was checked. The La...
Article
In this work, a natural bentonite was submitted to heating treatment (at 550°C and 750°C) in order to correlate such treatment to an improvement of the metal adsorption properties. The characterization of all materials includes XRD, FTIR, TGA, SEM analysis and porosity measurements. The efficiency of raw and calcined bentonite to remove nickel and...
Article
A new fluorescent Pb(II) imprinted polymer (Pb(II)-IIP) was synthesised for the selective detection of this contaminant in natural water. To play the sensing role, a fluorescent probe specific to Pb(II), based on anthracene coupled to 5-amino-8-hydroxyquinoline and a styrene moiety, was used as a functional monomer. It was associated with ethylene...
Article
Electrochemical molecularly imprinted polymers in microelectrode devices - Vitalys Mba Ekomo, Catherine Branger, Ana-Mihaela Gavrila, Andrei Sarbu, Dimitrios A. Koutsouras, Clemens Stolz, George G. Malliaras, Hugues Brisset
Article
Full-text available
Molecularly imprinted polymer (MIP) beads for proto-hypericin recognition were prepared by suspension polymerization. In order to study the impact of monomers on the MIPs properties, various monomers such as acrylic acid (AA), hydroxyethyl methacrylate (HEMA), methacrylic acid (MAA) and itaconic acid (IA) in their combinations were crosslinked with...
Article
Natural diatomite is widely used worldwide as an alternative to synthetic adsorbents and its adsorbing capacity towards nickel and silver ions is assessed in this work. Diatomite was heated up to 550, 750 or 950 °C to modify its physico-chemical and binding properties. A thorough characterization of the resulting material was done by X-ray diffract...
Article
Full-text available
Ephedrine is an illicit drug, classified as precursor for methamphetamine, which is also used as stimulant, appetite suppressant, decongestant or asthma. In this study, novel molecularly imprinted polymer (MIP) films were prepared by sol-gel derived techniques, using N-(2-aminoethyl)-3-aminopropyltrimethoxysilane as functional monomer, to recognize...
Article
Ion exchange equilibria of samarium, dysprosium, and erbium were measured in conventional and ion-imprinted resins containing sulfonic acid groups or iminodiacetic acid (ida) groups in H,H-form and partially neutralized H,Na-form. The ion-imprinted resins were prepared by copolymerization of complexes prepared from Er³⁺. Conventional resins have lo...
Article
Full-text available
Electrochemical molecularly imprinted polymers (e-MIP) are MIP specially designed to detect aromatic organic molecules without redox properties. The detection is based on the electrochemical answer of a redox probe inserted inside the binding cavities of cross-linked MIPs. Microbeads of e-MIP were synthesized from vinylferrocene or ferrocenylmethyl...
Article
3D printing technology is increasingly used in flow analysis, to develop low cost and tailor-made devices. The possibility of grafting specific molecules onto 3D printed parts offers new perspectives for the development of flow systems. In this study, a MPFS system including a dicarboxylate 1,5-diphenyl-3-thiocarbazone grafted 3D-printed device has...
Article
Full-text available
Two new chemosensors for lead (II) were synthesized based on 5-((anthracen-9-ylmethylene) amino)quinolin-10-ol (ANQ). ANQ was modified in the para position of the imine group via a methoxy link either with methylmethacrylate (ANQ-MMA) or styrene (ANQ-ST). Complexation of those molecules with Pb2+ was studied at room temperature using UV-Visible abs...
Article
Full-text available
A facile and inexpensive approach was established to prepare spherical molecularly imprinted polymers with hypericin (H-MIPs) via the wet-phase inversion method. The H-MIPs were characterized by infrared spectroscopy and thermogravimetric analysis. High-performance liquid chromatography combined with UV-Visible spectroscopy were used to assess the...
Article
New electrochemical molecularly imprinted polymers (e-MIPs) for benzo(a)pyrene (BaP) based on vinylferrocene (VFc) as redox tracer directly integrated into binding cavities during polymerization with crosslinker are reported. Impacts on the BaP detection are discussed according to: 1) the addition or no of 4-vinylpyridine (4VP) as comonomer, 2) the...
Article
The crystal structure of tetrakis(2,2'-bithiophene-5-yl)silane, C16H10S4Si0.5, has been determined at 293K in the Monoclinic (I2) symmetry. The Si atom has quasi-perfect tetrahedral geometry and bithiophene unit are quasi-planar. Comparison of Si-C bond lengths with literature data indicates an electron donating effect of the terminal thienyl ring...
Article
Electrocopolymerization of bithiophene with a monomer combining an EDOT moiety with a thiophene ring on which a carboxylic group is attached at the internal β-position via a sulphide linkage (1) has been investigated with the aim of producing a molecularly imprinted polymer. Analysis of the electrochemical behaviour of the film grown under various...
Article
Electrochemical molecularly imprinted polymers (e-MIPs) were for the first time introduced in screen-printed carbon electrodes (SPCE) as the sensing element for the detection of an organic pollutant. To play this sensing role, a redox tracer was incorporated inside the binding cavities of a cross-linked MIP, as a functional monomer during the synth...
Article
In the attempt to separate pseudohypericin (PH) from Hypericum Perforatum L. (or Saint John’s Wort, SJW) phyto-extracts, molecularly imprinted polymers (MIPs) hollow beads were prepared by one-step suspension polymerisation procedures and reported herein for the first time. The main reason for preparing such hollow materials refers to enhancing the...
Article
In recent years, the development of 3D printing in flow analysis has allowed the creation of new systems with various applications. Up to now, 3D printing was mainly used for the manufacture of small units such as flow detection cells, preconcentration units or mixing systems. In the present study, a new 3D printed lab-on-valve system was developed...
Article
Full-text available
In this study, the object is to prove that isolation of complexes made by varying the metal/ligand ratio (in situ complexation) yields similar polymer characteristics, metal binding and selectivity results as polymers synthesized by isolating the complex by precipitation. Complexation between nickel and the N-(4-vinylbenzyl)-2-(aminomethyl)pyridine...
Article
The development of 3D printing in recent years opens up a vast array of possibilities in the field of flow analysis. In the present study, a new 3D-printed flow system has been developed for the selective spectrophotometric determination of lead in natural waters. This system was composed of three 3D-printed units (sample treatment, mixing coil and...
Article
Ion-imprinted polymers (IIPs) for nickel were synthesized by inverse suspension copolymerization of vinylbenzyl iminodiacetic acid (VbIDA) with ethyleneglycol dimethacrylate (EDMA) in the presence of nickel(II) ions with various porogen solvents to study their impact on the IIPs properties. They were prepared with mixtures of acetonitrile and dimet...
Article
In this paper, an innovative method that uses hypericin "phyto-template" molecules is being applied herein for the first time to produce molecularly imprinted polymer (MIP) pearls able to selectively retain hypericin from Hypericum Perforatum L primary extracts. For this purpose, the wet phase inversion method was preferred for preparing the hyperi...
Article
Complexation of Ni2+ with 2-(aminomethyl)pyridine (amp) has been studied at 22 °C using absorption spectroscopy. Effect of high Zn2+ concentration on complex formation in aqueous sulfate solutions and complexation of Ni(ClO4)2 with amp in a nonaqueous methanol/2-methoxyethanol mixture were investigated. The spectra were analyzed using least-squares...
Article
Full-text available
Electrochemical molecularly imprinted polymers (e-MIPs) are reported for the first time. Their elaboration is based on the introduction of a redox tracer (vinylferrocene) inside the binding cavities of a cross-linked MIP. Determination of the analyte (benzo[a]pyrene) can be simply performed by measuring the redox tracer signal.
Article
Bulk and microemulsion systems were studied in order to obtain molecularly imprinted copolymers selective for gallic acid. Both systems contained acrylic acid as the functional monomer and ethylene glycol dimethacrylate as crosslinker. Microemulsion formation was confirmed by refractive index measurements and by conductivity analyses. Simple uptake...
Article
Full-text available
Bulk andmicroemulsion systemswere studied in order to obtain molecularly imprinted copolymers selective forgallic acid.Both systems contained acrylic acid as the functional monomer and ethylene glycol dimethacrylate as crosslinker. Microemulsion formation was confirmed by refractive indexmeasurements and by conductivity analyses. Simple uptake test...
Article
Full-text available
Highly selective gallic acid imprinted polymers were synthesized by a suspension polymerization technique. Poly (hydroxyethyl methacrylate-co-ethyleneglycol dimethacrylate) and poly (dimethoxystyrene-co-divinylbenzene) beads were studied for gallic acid separation from green tea leaves. Isothermal binding was explained using Langmuir and Freundlich...
Article
A method is proposed to establish useful operation conditions for solid separation of materials having different acidities. The effect of ligand acidity on competitive adsorption and desorption of metal salts was studied by using copper sulfate and sulfuric acid as model electrolytes. Adsorption equilibria with four commercial N-donor chelating ads...
Article
Ion-imprinted polymer beads are prepared for the first time by inverse suspension polymerization in mineral oil using nickel(II) as the template ion. As water is not used as the continuous phase, this new route of synthesis avoids the risk that the ion template leaves the suspension for the aqueous phase. The leaching of nickel from the resin beads...
Article
Porous poly(styrene-co-divinylbenzene) resins functionalized with catechol were prepared in two different ways. Catechol was either grafted on commercial Amberlite® XAD-4 resin via a reduced imine and diazo bridges or incorporated by direct copolymerization of divinylbenzene with dimethoxystyrene followed by deprotection of the methoxy groups. The...
Article
Poly(vinylcatechol-co-divinylbenzene) resins have been prepared by suspension copolymerization of 3,4-dimethoxystyrene (DMS) with divinylbenzene (DVB) using toluene as the porogen and followed by deprotection of the catechol functions. The ratio of DMS versus DVB was modified and led to a maximum catechol content (determined by elemental analysis)...
Article
Solid-phase extraction for cationic elements is a promising approach for water treatment or for analysis applications. However, supports that allow the selective extraction and/or preconcentration of metalloid species are still not widespread. A new chelating sorbent has been prepared by grafting 2,3-diaminonaphtalene (DAN) on Amberlite® XAD-4 resi...
Article
Chelating solid phase extraction is a preconcentration method adapted for metal ions extraction in water and requires functionalization of a solid sorbent by an organic ligand. A new chelating resin has been prepared by grafting catechol on Amberlite® XAD-4 with an imine bridge and reducing it to enhance stability of the modified resin. Synthesis w...
Article
New materials for chelating solid-phase extraction have been prepared by grafting of salicylic acid and derivatives on poly(styrene-co-divinylbenzene) based sorbents. These sorbents are either resin bead-shaped Amberlite® XAD-4 or membrane disk-shaped Empore™ SDB-XC. Grafting has been achieved via –NN– spacer. The grafted ligands are salicylic acid...
Article
Full-text available
A new analytical method was developed for on-line monitoring of residual coagulants (aluminium and iron salts) in potable water. The determination was based on a sequential procedure coupling an extraction/enrichment step of the analytes onto a modified resin and a spectrophotometric measurement of a surfactant-sensitized binary complex formed betw...
Article
Chelating solid phase extraction is a method particularly adapted to the recovery of metallic ions in polluted waters. The principle consists in the partitioning of the analyte between the solution and a solid sorbent grafted by a ligand. Aromatic organic crosslinked copolymers, which are commercially available, permit to consider numerous ways of...
Article
Among commercially available sorbents, aromatic organic crosslinked copolymers allow to consider numerous ways of linking ligands. In this way, the grafting of salicylic acid and of its derivatives (methylene disalicylic acid and aurintricarboxylic acid) via the ketone, amide and diazo bridges on Amberlite ® XAD‐4 resin and Empore™ SDB‐XC membrane...
Article
The synthesis of 2,2,3,3-tetrahydro-perfluoroundecanoyl end-functionalized polystyrene– poly(ethylene oxide) block (PS-block-PEO-R F) copolymers and their matching PS-block-PEO diblock copolymers was carried out by sequential anionic polymerization. Viscometry and 19 F NMR studies show that the PS-block-PEO copolymers, in contrast to their matching...
Article
Full-text available
A fluorimetric procedure for the determination of aluminium with matrix removal in drinking water is proposed. The system is based both on the solid phase extraction of aluminium on a new chelating resin (XAD-4 modified by grafting salicylic acid) and the fluorimetric detection of a complex formed between 8-hydroxyquinoline-5-sulfonic acid (HQS) an...
Article
We report the synthesis and structure determination of PS-block-PEO functionalized by fluorocarbon end-group (C8F17) via an ester bridge. The synthesis was done by an anionic polymerization of PS and POE terminated by grafting 3-perfluorooctylpropanoyle chloride (C8F17–C2H4–COCl) onto PS-POE alcoholate. The structure has been characterized by a num...
Article
For use in the solid-phase extraction of aluminium, a poly(styrene-co-divinylbenzene) commercial resin (Amberlite® XAD-4) was modified by grafting on salicylic acid. Anchorage of this ligand was achieved via a ketone bridge formed by Friedel–Crafts acylation. Because of the insolubility of the resin in common organic solvents, the synthesis scheme...
Article
Establishing structure – properties relationships for an associative polymer requires a precise knowledge of its structure. In previous works, we studied water-soluble telechelic perfluorocarbon (C 8 F 17) derivatives of poly(ethylene glycol)s. They exhibit stronger hydrophobic intermolecular associations than the corresponding hydrocarbon derivati...
Article
Optical patterning of the molecular order in dye doped polymers offers interesting and quite rich prospects. The generalization of the principles of holography to the recording of an interference pattern between mutually coherent fields of different frequencies, such as fundamental and second harmonic has been demonstrated to enable a full 3D polar...
Article
The photophysical and complexing properties of fluoroionophores consisting of the coumarin C153 linked to dibenzo-16-crown-5 (C153-DBC) and tribenzo-19-crown-6 (C153-TBC) are described in acetonitrile and ethanol. The carbonyl group of the coumarin moiety is in direct interaction with a bound cation. The selectivity of these compounds for a given a...
Article
The photophysical and complexing properties of fluoroionophores consisting of the coumarin C153 linked to dibenzo-16-crown-5 (C153-DBC) and tribenzo-19-crown-6 (C153-TBC) are described in acetonitrile and ethanol. The carbonyl group of the coumarin moiety is in direct interaction with a bound cation. The selectivity of these compounds for a given a...
Article
The photophysical and complexing properties of a fluoroionophore consisting of coumarin 343 linked to monoaza-15-crown-5 are reported in acetonitrile and ethanol. The amide link between the coumarin and the crown precludes pH sensitivity of the tertiary amine bridging group. Upon complexation by calcium and magnesium cations, the photophysical prop...
Article
An azo-dye containing dimesityl boron as the electron acceptor group is synthesized and incorporated as side chains in polyurethane matrices. These new polymers have been poled under an external electrical field by the corona technique. They exhibit high nonlinear response and a remarkable temporal stability. It appears that the poling time is a cr...
Article
Two polyurethanes containing an azo-dye chromophore for which the acceptor is a dimesitylboryl group have been synthesised. Their second order nonlinear optical properties have been measured in thin films oriented by the corona poling technique. Particular attention has been paid to the relaxation phenomena, which proved that apart from a remarkabl...
Article
New molecules with dimesitylboron as the acceptor group and bithiophene as the unsaturated chain have been synthesized and their non-linear optical properties investigated. The theoretical first hyperpolarizabilities determined by calculations are compared with experimental results.
Article
A new class of nonlinear optical materials, tetrahedral tin complexes in which the metal ion can act as a polarizable group linked to donor dimethylamino moieties, is described. An example is shown in the Figure. The quadratic hyperpolarizability coefficients determined by hyper-Raman scattering are reported and the important characteristics of the...
Article
The hyperpolarizability of non-polar tetraorganotin molecules with Td symmetry has been investigated by the hyper-Rayleigh scattering technique. The results show that, in spite of the absence of a dipolar contribution to the hyperpolarizability tensor, the value of β is significantly high.

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Projects (2)
Project
Preparing TNT-Moleculalry Imprinted Films Preparing Drug-Moleculalry Imprinted Films