2009
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Design and electrochemical characterization of a new cobalt(II)-cyclodextrin complex. Evidence for a supramolecular stabilization of the Co(I) state Article de journal Elise Deunf; Olivier Buriez; Eric Labbe; Jean-Noel Verpeaux; Christian Amatore Electrochemistry Communications, 11 (1), p. 114-117, 2009. @article{RID:0721150706477-24b,
title = {Design and electrochemical characterization of a new cobalt(II)-cyclodextrin complex. Evidence for a supramolecular stabilization of the Co(I) state},
author = {Elise Deunf and Olivier Buriez and Eric Labbe and Jean-Noel Verpeaux and Christian Amatore},
year = {2009},
date = {2009-01-01},
journal = {Electrochemistry Communications},
volume = {11},
number = {1},
pages = {114-117},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Electrochemical behavior of nanoelectrode ensembles in the ionic liquid [BMIm][BF4] Article de journal M De Leo; L M Moretto; O Buriez; P Ugo Electroanalysis, 21 (3-5), p. 392–398, 2009. @article{DeLeo:2009,
title = {Electrochemical behavior of nanoelectrode ensembles in the ionic liquid [BMIm][BF4]},
author = {M De Leo and L M Moretto and O Buriez and P Ugo},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-60549112441&doi=10.1002%2felan.200804414&partnerID=40&md5=632103a63314de43db5fbad40963633e},
doi = {10.1002/elan.200804414},
year = {2009},
date = {2009-01-01},
journal = {Electroanalysis},
volume = {21},
number = {3-5},
pages = {392--398},
abstract = {The electrochemical behavior of nanoelectrode ensembles (NEEs), prepared by electroless plating of Au using microporous polycarbonate membranes as template, is tested in the ionic liquid [BMIm][BF4]. The accessible potential window is significantly wider in [BMIm][BF4] than in water, extending approximately, for 3.4 V vs. 1 V, respectively. The voltammetric behavior at NEEs of two redox probes, namely butyl viologen (BV2+) and (ferrocenylmethyl) trimethylammonium (FA+) are examined at different scan rates. In both cases, at scan rates higher than 200 mV/s sigmoidally shaped voltammograms typical of a pure radial diffusion regime are observed. At lower scan rates the voltammograms are peak shaped, as expected for total overlap diffusion conditions. This is the first time that the pure radial regime is obtained with NEEs made using commercially available polycarbonate templates, since in water solution only the total overlap regime is typically observed. This is explained as a consequence of the high viscosity of [BMIm][BF4] which reflects in lowering of diffusion coefficients and smaller thickness of diffusion layers, for the same time scale, with respect to water solutions, but also the fact that the nanoelectrodes are slightly recessed helps in observing the pure radial regime. In order to make operative the pure radial condition it is indeed required that the thickness of diffusion layer at individual nanoelectrodes be smaller than the hemi-distance between neighboring nanoelectrodes. Examining the analytical performances achievable with NEEs in [BMIm][BF4], it is shown that a limit is given by the decreased diffusion coefficients. Detection limits at NEEs in the ionic liquid are indeed higher than those obtained in water solutions. This notwithstanding, detections limits at NEEs in [BMIm][BF4] are always improved with respect to those at conventional electrodes. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The electrochemical behavior of nanoelectrode ensembles (NEEs), prepared by electroless plating of Au using microporous polycarbonate membranes as template, is tested in the ionic liquid [BMIm][BF4]. The accessible potential window is significantly wider in [BMIm][BF4] than in water, extending approximately, for 3.4 V vs. 1 V, respectively. The voltammetric behavior at NEEs of two redox probes, namely butyl viologen (BV2+) and (ferrocenylmethyl) trimethylammonium (FA+) are examined at different scan rates. In both cases, at scan rates higher than 200 mV/s sigmoidally shaped voltammograms typical of a pure radial diffusion regime are observed. At lower scan rates the voltammograms are peak shaped, as expected for total overlap diffusion conditions. This is the first time that the pure radial regime is obtained with NEEs made using commercially available polycarbonate templates, since in water solution only the total overlap regime is typically observed. This is explained as a consequence of the high viscosity of [BMIm][BF4] which reflects in lowering of diffusion coefficients and smaller thickness of diffusion layers, for the same time scale, with respect to water solutions, but also the fact that the nanoelectrodes are slightly recessed helps in observing the pure radial regime. In order to make operative the pure radial condition it is indeed required that the thickness of diffusion layer at individual nanoelectrodes be smaller than the hemi-distance between neighboring nanoelectrodes. Examining the analytical performances achievable with NEEs in [BMIm][BF4], it is shown that a limit is given by the decreased diffusion coefficients. Detection limits at NEEs in the ionic liquid are indeed higher than those obtained in water solutions. This notwithstanding, detections limits at NEEs in [BMIm][BF4] are always improved with respect to those at conventional electrodes. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. |
Exploring the first steps of an electrochemically-triggered controlled polymerization sequence: Activation of alkyl- and benzyl halide initiators by an electrogenerated Fe(II)Salen complex Article de journal Valentina Bonometti; Eric Labbe; Olivier Buriez; Patrizia Mussini; Christian Amatore Journal of Electroanalytical Chemistry, 633 (1), p. 99-105, 2009. @article{RID:0721150706477-8b,
title = {Exploring the first steps of an electrochemically-triggered controlled polymerization sequence: Activation of alkyl- and benzyl halide initiators by an electrogenerated Fe(II)Salen complex},
author = {Valentina Bonometti and Eric Labbe and Olivier Buriez and Patrizia Mussini and Christian Amatore},
year = {2009},
date = {2009-01-01},
journal = {Journal of Electroanalytical Chemistry},
volume = {633},
number = {1},
pages = {99-105},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Further insights into hydrophobic interactions between ferrocenyl-tamoxifen drugs and non-polar molecular architectures at electrode surfaces Article de journal Omar Mertins; Olivier Buriez; Eric Labbe; Ping-Ping Fang; Elizabeth Hillard; Anne Vessieres; Gerard Jaouen; Zhong-Qun Tian; Christian Amatore Journal of Electroanalytical Chemistry, 635 (1), p. 13-19, 2009. @article{RID:0721150706478-7b,
title = {Further insights into hydrophobic interactions between ferrocenyl-tamoxifen drugs and non-polar molecular architectures at electrode surfaces},
author = {Omar Mertins and Olivier Buriez and Eric Labbe and Ping-Ping Fang and Elizabeth Hillard and Anne Vessieres and Gerard Jaouen and Zhong-Qun Tian and Christian Amatore},
year = {2009},
date = {2009-01-01},
journal = {Journal of Electroanalytical Chemistry},
volume = {635},
number = {1},
pages = {13-19},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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The replacement of a phenol group by an aniline or acetanilide group enhances the cytotoxicity of 2-ferrocenyl-1,1-diphenyl-but-1-ene compounds against breast cancer cells Article de journal Pascal Pigeon; Siden Top; Ouardia Zekri; Elizabeth A Hillard; Anne Vessieres; Marie-Aude Plamont; Olivier Buriez; Eric Labbe; Michel Huche; Sultana Boutamine; Christian Amatore; Gerard Jaouen Journal of Organometallic Chemistry, 694 (6), p. 895-901, 2009. @article{RID:0721150706478-11b,
title = {The replacement of a phenol group by an aniline or acetanilide group enhances the cytotoxicity of 2-ferrocenyl-1,1-diphenyl-but-1-ene compounds against breast cancer cells},
author = {Pascal Pigeon and Siden Top and Ouardia Zekri and Elizabeth A Hillard and Anne Vessieres and Marie-Aude Plamont and Olivier Buriez and Eric Labbe and Michel Huche and Sultana Boutamine and Christian Amatore and Gerard Jaouen},
year = {2009},
date = {2009-01-01},
journal = {Journal of Organometallic Chemistry},
volume = {694},
number = {6},
pages = {895-901},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
2008
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Electrochemical attachment of a conjugated amino-ferrocifen complex onto carbon and metal surfaces Article de journal Olivier Buriez; Eric Labbe; Pascal Pigeon; Gerard Jaouen; Christian Amatore Journal of Electroanalytical Chemistry, 619 , p. 169-175, 2008. @article{RID:0721150706478-13,
title = {Electrochemical attachment of a conjugated amino-ferrocifen complex onto carbon and metal surfaces},
author = {Olivier Buriez and Eric Labbe and Pascal Pigeon and Gerard Jaouen and Christian Amatore},
year = {2008},
date = {2008-01-01},
journal = {Journal of Electroanalytical Chemistry},
volume = {619},
pages = {169-175},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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Reactivity and Antiproliferative Activity of Ferrocenyl-Tamoxifen Adducts with Cyclodextrins against Hormone-Independent Breast-Cancer Cell Lines Article de journal Olivier Buriez; Jan Martin Heldt; Eric Labbe; Anne Vessieres; Gerard Jaouen; Christian Amatore Chemistry-a European Journal, 14 (27), p. 8195-8203, 2008. @article{RID:0721150706479-10,
title = {Reactivity and Antiproliferative Activity of Ferrocenyl-Tamoxifen Adducts with Cyclodextrins against Hormone-Independent Breast-Cancer Cell Lines},
author = {Olivier Buriez and Jan Martin Heldt and Eric Labbe and Anne Vessieres and Gerard Jaouen and Christian Amatore},
year = {2008},
date = {2008-01-01},
journal = {Chemistry-a European Journal},
volume = {14},
number = {27},
pages = {8195-8203},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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Supramolecular effects of cyclodextrins on the electrochemical reduction and reactivity of aromatic carbonyl compounds Article de journal Christian Amatore; Olivier Buriez; Eric Labbe; Jean-Noel Verpeaux Journal of Electroanalytical Chemistry, 621 (2), p. 134-145, 2008. @article{RID:0721150706479-14,
title = {Supramolecular effects of cyclodextrins on the electrochemical reduction and reactivity of aromatic carbonyl compounds},
author = {Christian Amatore and Olivier Buriez and Eric Labbe and Jean-Noel Verpeaux},
year = {2008},
date = {2008-01-01},
journal = {Journal of Electroanalytical Chemistry},
volume = {621},
number = {2},
pages = {134-145},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
2007
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Activation of 1-halonaphthalenes by electrogenerated Co-I-salen (-) Article de journal Nadge Faux; Eric Labbe; Olivier Buriez; Jean Yves Nedelec Journal of Electroanalytical Chemistry, 600 (2), p. 359-363, 2007. @article{RID:0721150706479-5,
title = {Activation of 1-halonaphthalenes by electrogenerated Co-I-salen (-)},
author = {Nadge Faux and Eric Labbe and Olivier Buriez and Jean Yves Nedelec},
year = {2007},
date = {2007-01-01},
journal = {Journal of Electroanalytical Chemistry},
volume = {600},
number = {2},
pages = {359-363},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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Electrochemical activation of β-lapachone in β-cyclodextrin inclusion complexes and reactivity of its reduced form towards oxygen in aqueous solutions Article de journal F C de Abreu; D C M Ferreira; M O F Goulart; O Buriez; C Amatore Journal of Electroanalytical Chemistry, 608 (2), p. 125–132, 2007. @article{deAbreu:2007,
title = {Electrochemical activation of β-lapachone in β-cyclodextrin inclusion complexes and reactivity of its reduced form towards oxygen in aqueous solutions},
author = {F C de Abreu and D C M Ferreira and M O F Goulart and O Buriez and C Amatore},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-34548644479&doi=10.1016%2fj.jelechem.2007.05.020&partnerID=40&md5=8ed62bd89e5795ebf0a17117cd46d1dc},
doi = {10.1016/j.jelechem.2007.05.020},
year = {2007},
date = {2007-01-01},
journal = {Journal of Electroanalytical Chemistry},
volume = {608},
number = {2},
pages = {125--132},
abstract = {β-Lapachone (1) is a natural ortho-naphthoquinone that has been shown to have a variety of pharmacological effects, mainly anticancer activity. As a single agent, β-lapachone has demonstrated significant antineoplastic activity against several human cancer cell lines at concentrations typically in the range of 1-10 μM (IC50). The use of cyclodextrins is useful to overcome solubility and bioavailability problems. In the present case, cyclic voltammetry and UV/vis spectroscopy have been used to monitor the inclusion phenomena of β-lapachone within the cavity of β-cyclodextrin, together with studies concerning the competitive effects of ethanol concentration on this behavior. A value of 15 ± 5 M-1 was found for the association constant between β-lapachone and β-cyclodextrin in phosphate buffer, in the presence of 5% ethanol. The electrochemical behavior of the β-lapachone reduced form suggests external interactions between the hydroquinone and β-cyclodextrin via the formation of hydrogen bonds. Electrochemical studies were also performed in the presence of oxygen, since the redox environment of β-lapachone biological targets is considered very important for its therapeutical efficiency. In the presence of O2, β-lapachone has shown a catalytic reduction wave, related probably to an electron transfer to oxygen, generating oxygen reactive species and giving back the parent quinone, leading thus to a redox cycle, with a kinetic apparent constant of 40 s-1. These in vitro results correlate with in vivo activities. © 2007 Elsevier B.V. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
β-Lapachone (1) is a natural ortho-naphthoquinone that has been shown to have a variety of pharmacological effects, mainly anticancer activity. As a single agent, β-lapachone has demonstrated significant antineoplastic activity against several human cancer cell lines at concentrations typically in the range of 1-10 μM (IC50). The use of cyclodextrins is useful to overcome solubility and bioavailability problems. In the present case, cyclic voltammetry and UV/vis spectroscopy have been used to monitor the inclusion phenomena of β-lapachone within the cavity of β-cyclodextrin, together with studies concerning the competitive effects of ethanol concentration on this behavior. A value of 15 ± 5 M-1 was found for the association constant between β-lapachone and β-cyclodextrin in phosphate buffer, in the presence of 5% ethanol. The electrochemical behavior of the β-lapachone reduced form suggests external interactions between the hydroquinone and β-cyclodextrin via the formation of hydrogen bonds. Electrochemical studies were also performed in the presence of oxygen, since the redox environment of β-lapachone biological targets is considered very important for its therapeutical efficiency. In the presence of O2, β-lapachone has shown a catalytic reduction wave, related probably to an electron transfer to oxygen, generating oxygen reactive species and giving back the parent quinone, leading thus to a redox cycle, with a kinetic apparent constant of 40 s-1. These in vitro results correlate with in vivo activities. © 2007 Elsevier B.V. All rights reserved. |
Electrochemical aerobic oxidation of aminocyclopropanes to endoperoxides Article de journal C Madelaine; Y Six; O Buriez Angewandte Chemie - International Edition, 46 (42), p. 8046–8049, 2007. @article{Madelaine:2007,
title = {Electrochemical aerobic oxidation of aminocyclopropanes to endoperoxides},
author = {C Madelaine and Y Six and O Buriez},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-35649020765&doi=10.1002%2fanie.200702903&partnerID=40&md5=3fcf75ce883463516bde923eb9437745},
doi = {10.1002/anie.200702903},
year = {2007},
date = {2007-01-01},
journal = {Angewandte Chemie - International Edition},
volume = {46},
number = {42},
pages = {8046--8049},
abstract = {(Chemical Equation Presented) Electrical synthesizer: Results of cyclic voltammetric studies on a range of aminocyclopropanes in the absence or in the presence of oxygen are in full agreement with the currently accepted autocatalytic mechanism for the aerobic oxidation of these compounds. A simple and efficient procedure was developed for the electrosynthesis of the corresponding endoperoxides (see scheme), some of which exhibit moderate antimalarial activity. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
(Chemical Equation Presented) Electrical synthesizer: Results of cyclic voltammetric studies on a range of aminocyclopropanes in the absence or in the presence of oxygen are in full agreement with the currently accepted autocatalytic mechanism for the aerobic oxidation of these compounds. A simple and efficient procedure was developed for the electrosynthesis of the corresponding endoperoxides (see scheme), some of which exhibit moderate antimalarial activity. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA. |
2006
|
Unexpected stabilization of a simple cobalt(I) salt in acetonitrile at a glassy carbon electrode Article de journal Olivier Buriez; Eric Labbe; Jacques Perichon Journal of Electroanalytical Chemistry, 593 (1-2), p. 99-104, 2006. @article{RID:0721150706479-26,
title = {Unexpected stabilization of a simple cobalt(I) salt in acetonitrile at a glassy carbon electrode},
author = {Olivier Buriez and Eric Labbe and Jacques Perichon},
year = {2006},
date = {2006-01-01},
journal = {Journal of Electroanalytical Chemistry},
volume = {593},
number = {1-2},
pages = {99-104},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
2005
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Co-I and Co-0-bipyridine complexes obtained by reduction of CoBr(2)bpy: Electrochemical behaviour and investigation of their reactions with aromatic halides and vinylic acetates Article de journal L Polleux; E Labbe; O Buriez; J Perichon Chemistry-a European Journal, 11 (16), p. 4678-4686, 2005. @article{RID:0721150706479-4,
title = {Co-I and Co-0-bipyridine complexes obtained by reduction of CoBr(2)bpy: Electrochemical behaviour and investigation of their reactions with aromatic halides and vinylic acetates},
author = {L Polleux and E Labbe and O Buriez and J Perichon},
year = {2005},
date = {2005-01-01},
journal = {Chemistry-a European Journal},
volume = {11},
number = {16},
pages = {4678-4686},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
On the reactivity of the electrogenerated cobalt(I) species towards aryl halides in the presence of allylethers Article de journal K Kecili; O Buriez; E Labbe; J Perichon Electrochimica Acta, 50 (12), p. 2377-2384, 2005. @article{RID:0721150706480-9,
title = {On the reactivity of the electrogenerated cobalt(I) species towards aryl halides in the presence of allylethers},
author = {K Kecili and O Buriez and E Labbe and J Perichon},
year = {2005},
date = {2005-01-01},
journal = {Electrochimica Acta},
volume = {50},
number = {12},
pages = {2377-2384},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
2004
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Mechanism(s) of the cobalt-catalyzed electrochemical coupling between aromatic halides and allylic acetates Article de journal P Gomes; O Buriez; E Labbe; C Gosmini; J Perichon Journal of Electroanalytical Chemistry, 562 (2), p. 255-260, 2004. @article{RID:0721150706480-12,
title = {Mechanism(s) of the cobalt-catalyzed electrochemical coupling between aromatic halides and allylic acetates},
author = {P Gomes and O Buriez and E Labbe and C Gosmini and J Perichon},
year = {2004},
date = {2004-01-01},
journal = {Journal of Electroanalytical Chemistry},
volume = {562},
number = {2},
pages = {255-260},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|