Girard F., Peret M., Dumont N., Badets V., Blanc S., Gazeli K., Noël C., Belmonte T., Marlin L., Cambus J.P., Simon G., Sojic N., Held B., Clément F. and Arbault S.

Phys. Chem. Chem. Phys., 2018, 20, 9198-9210

The understanding of plasma-liquid interactions is of major importance, not only in physical chemistry, chemical engineering and polymer science, but in biomedicine as well as to better control the biological processes induced on/in biological samples by Cold Atmospheric Plasmas (CAPs). Moreover, plasma-air interactions have to be particularly considered since these CAPs propagate in the ambient air. Herein, we developed a helium-based CAP setup equipped with a shielding-gas device, which allows the control of plasma-air interactions. Thanks to this device, we obtained specific diffuse CAPs, with the ability to propagate along several centimetres in the ambient air at atmospheric pressure. Optical Emission Spectroscopy (OES) measurements were performed on these CAPs during their interaction with a liquid medium (Phosphate-Buffered Saline PBS 10 mM, pH 7.4) giving valuable information about the induced chemistry as a function of the shielding gas composition (variable O2/(O2+N2) ratio). Several excited species were detected including N2+(First Negative System, FNS), N2(Second Positive System, SPS) and HO· radical. The ratios between nitrogen/oxygen excited species strongly depend on the O2/(O2+N2) ratio. The liquid chemistry developed after CAP treatment was investigated by combining electrochemical and UV-visible absorption spectroscopy methods. We detected and quantified stable oxygen and nitrogen species (H2O2, NO2-, NO3-) along with Reactive Nitrogen Species (RNS) such as the peroxynitrite anion ONOO-. It appears that the RNS/ROS (Reactive Oxygen Species) ratio in the treated liquid depends also on the shielding gas composition. Eventually, the composition of the surrounding environment of CAPs seems to be crucial for the induced plasma chemistry and consequently, for the liquid chemistry. All these results demonstrate clearly that for physical, chemical and biomedical applications, which are usually achieved in ambient air environments, it is necessary to realize an effective control of plasma-air interactions.

2018 08

Surface-confined Electrochemiluminescence Microscopy of Cell Membranes
Wednesday, 14 November 2018
S. Voci, B. Goudeau, G. Valenti, A. Lesch, M. Jović, S. Rapino, F. Paolucci, S. Arbault, N. Sojic J. Am. Chem. Soc., 140, 2018, 14753-14760 Herein is reported a surface-confined microscopy based on...
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Enhanced Annihilation Electrochemiluminescence by Nanofluidic Confinement
Wednesday, 14 November 2018
Hanan Al-Kutubi, Silvia Voci, Liza Rassaei, Neso Sojic, Klaus Mathwig Chem .Sci., 9, 2018, (2018 Chemical Science HOT Article Collection) Microfabricated nanofluidic electrochemical devices offer a...
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L’électrochimiluminescence : une méthode de choix pour la bioanalyse
Wednesday, 14 November 2018
L. Bouffier, S. Arbault, A. Kuhn, N. Sojic Techniques de l’Ingénieur. 2018. P156 Les mesures sélectives et sensibles dans des échantillons complexes tels que l’urine ou le sang sont devenues...
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Sealing hyaluronic acid microgels with oppositely-charged polypeptides: A simple strategy for packaging hydrophilic drugs with on-demand release
Monday, 12 November 2018
H. Labie, A. Perro, V. Lapeyre, B. Goudeau, B. Catargi, R. Auzély, V. Ravaine Journal of Colloid and Interface Science 535 (2019) 16–27 A simple route to deliver on demand hydrosoluble molecules...
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Poly(aspartic acid) hydrogels showing reversible volume change upon redox stimulus
Monday, 12 November 2018
E.Krisch, B. Gyarmati, D. Barczikai, V. Lapeyre, B.A. Szilágyi, V. Ravaine, A. Szilágyi European Polymer Journal 105 (2018) 459–468 Redox and pH responsive hydrogels were synthesized, which can...
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Wireless electromechanical readout of chemical information
Sunday, 28 October 2018
L. Zhang, B. Gupta, B. Goudeau, N. Mano, A. Kuhn J. Am. Chem. Soc (2018) in press, DOI: 10.1021/jacs.8b10072 Collecting electrochemical information concerning the presence of molecules in a solution...
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L’électrochimie pour la reconnaissance chirale
Sunday, 28 October 2018
L. Adam, A. Kuhn Techniques de l'Ingénieur (2018) in press Les molécules chirales sont d’un grand intérêt dans un certain nombre de domaines tels que la médecine, la biologie ou encore la...
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Preparation of Template-Free Robust Yolk–Shell Gelled Particles from Controllably Evolved All-in-Water Emulsions
Friday, 05 October 2018
J.-P. Douliez, A. Perro, J.-P. Chapel, B. Goudeau and L. Béven Small 2018, 1803042 A template-free all-aqueous bulk preparation of robust hollow capsules having a gelatin shell from all-in-water...
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Highly ordered macroporous poly-3,4-ortho-xylendioxythiophene electrodes as a sensitive analytical tool for heavy metal quantification
Tuesday, 02 October 2018
G. Salinas, B. A. Frontana-Uribe, S. Reculusa, P. Garrigue, A. Kuhn Anal.Chem. 2018, in press, DOI: 10.1021/acs.analchem.8b03779 Highly ordered macroporous electrodes of the conducting polymer...
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Optimal thickness of a porous micro‐electrode operating a single redox reaction
Tuesday, 02 October 2018
T. D. Le, L. Zhang, S. Reculusa, G.Vignoles, N. Mano, A. Kuhn, D. Lasseux ChemElectroChem 2018, in press, doi.org/10.1002/celc.201800972 This article reports on a procedure to predict the optimal...
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A snapshot of the electrochemical reaction layer by using 3 dimensionally resolved fluorescence mapping
Friday, 14 September 2018
A. de Poulpiquet, B. Goudeau, P. Garrigue, N. Sojic, S. Arbault, T. Doneux, L. Bouffier. Chem. Sci. 2018, 9, 6622-6628. The coupling between electrochemistry and fluorescence confocal laser scanning...
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Eosin-Mediated Alkylsulfonyl Cyanation of Olefins
Friday, 14 September 2018
V. Pirenne, G. Kurtay, S. Voci, L. Bouffier, N. Sojic, F. Robert, D. M. Bassani, Y. Landais. Org. Lett. 2018, 20 (15), 4521-4525. Eosin-Y (EY)-mediated alkylsulfonyl cyanation of olefins was shown...
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C‐Functionalized Cationic Diazaoxatriangulenes: Late‐Stage Synthesis and Tuning of Physicochemical Properties
Friday, 14 September 2018
I. Hernández Delgado, S. Pascal, C. Besnard, S. Voci, L. Bouffier, N. Sojic, J. Lacour. Chem. Eur. J. 2018, 24 (40), 10186-10195. A series of nine C‐functionalized cationic diazaoxa triangulene...
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Uphill production of dihydrogen by enzymatic oxidation of glucose without an external energy source
Monday, 13 August 2018
E. Suraniti, P. Merzeau, J. Roche, S. Gounel, A. G. Mark, P. Fischer, N. Mano, A. Kuhn Nature Comm. 2018, 9:3229 see also CNRS press release Chemical systems do not allow the coupling of energy from...
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Electrically Controlled Nano and Micro Actuation in Memristive Switching Device with On-Chip Gas Encapsulation
Monday, 09 July 2018
D. Kos, H. P. A. G. Astier, G. D. Martino, J. Mertens, H. Ohadi, D. De. Fazio, D. Yoon, Z. Zhao, A. Kuhn, A. C. Ferrari, C. J. B. Ford, J. J. Baumberg Small, 2018, in press,...
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TRPV1 activation induced by modulated or unmodulated 1800 MHz radiofrequency field exposure
Monday, 18 June 2018
Ruigrok, H.J., Arnaud-Cormos D., Hurtier A., Poque-Haro E., Poulletier de Gannes F., Ruffié G., Bonnaudin F, Lagroye I., Sojic N., Arbault S., Lévêque P., Veyret B. and Percherancier Y. Radiation...
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Correlations between gaseous and liquid phase chemistries induced by cold atmospheric plasmas in a physiological buffer
Monday, 18 June 2018
Girard F., Peret M., Dumont N., Badets V., Blanc S., Gazeli K., Noël C., Belmonte T., Marlin L., Cambus J.P., Simon G., Sojic N., Held B., Clément F. and Arbault S. Phys. Chem. Chem. Phys., 2018,...
Electroformation of Phospholipid Giant Unilamellar Vesicles in a Physiological Buffer
Monday, 18 June 2018
Lefrançois P., Goudeau B., Arbault S. Integrative Biology, 2018, in press Phospholipid Giant Unilamellar Vesicles (GUVs) are usually prepared by electroformation in water, that is in a...
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Des biopiles enzymatiques pour alimenter des circuits électroniques implantables
Tuesday, 10 April 2018
E. Suraniti, A.G. Mark, J. Roche, H. Richter, A. Kuhn, P. Fischer, N. Mano L’Actualité Chimique 2018, 427-428,127-128 Une micro-source d’énergie intégrée permettrait à des implants...
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Current hot-spots and some more exotic topics
Tuesday, 10 April 2018
L. Bouffier, N. Sojic, A. Kuhn. Current Opinion in Electrochemistry 2018, 7:A1–A4 This section of Current Opinion in Electrochemistry includes 17 articles contributed by groups from all over the...
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Une façon inhabituelle de briser la symétrie moléculaire: les métaux mesoporeux chiraux
Thursday, 22 February 2018
A. Kuhn L’Actualité Chimique 2018, 426,19-24 L’analyse et la synthèse des composés chiraux est d’une importance cruciale dans de nombreux domaines de la société et de la science, y...
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Gateway state-mediated, long-range tunnelling in molecular wires
Thursday, 01 February 2018
S. Sangtarash,  A. Vezzoli,  H. Sadeghi, N. Ferri,  H. M. O'Brien,  I. Grace,  L. Bouffier, S. J. Higgins, R. J. Nichols, C. J. Lambert. Nanoscale 2018, 10,...
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Tuning Electrochemiluminescence in Multi-Stimuli Responsive Hydrogel Films
Monday, 08 January 2018
Haidong Li, Silvia Voci, Valérie Ravaine and Neso Sojic J. Phys. Chem. Lett., 2018, 9, 340–345 Luminescent and redox properties of stimuli-responsive hydrogel materials have been modulated by...
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Bipolar Conducting Polymer Crawlers Based on Triple Symmetry Breaking
Friday, 15 December 2017
B. Gupta, B. Goudeau, P. Garrigue, A. Kuhn Adv. Funct. Mater. 2018, 1705825 see also video clip in Zeste de Science Bipolar electrochemistry can be used in different ways to induce motion of an...
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