{"id":1234,"date":"2022-06-22T17:28:05","date_gmt":"2022-06-22T15:28:05","guid":{"rendered":"https:\/\/mami.u-strasbg.fr\/?page_id=1234"},"modified":"2022-06-22T17:40:56","modified_gmt":"2022-06-22T15:40:56","slug":"regine-perzynski","status":"publish","type":"page","link":"https:\/\/mami.u-strasbg.fr\/index.php\/regine-perzynski\/","title":{"rendered":"R\u00e9gine Perzynski"},"content":{"rendered":"\t\t
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R\u00e9gine Perzynski<\/a><\/h3>

Professeur - Universit\u00e9 P. et M. Curie
\nLaboratoire PHENIX, UMR 8234
\nSorbonne Univ. \u2013 Paris<\/p><\/div><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Title: Colloidal Structure and Thermo-Diffusion of Magnetic-Nanoparticle Dispersions in Ionic Liquids<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Abstract:<\/strong><\/p>

Magnetic nanoparticles (NPs) bearing a superficial electrostatic charge can be <\/span>
dispersed in various polar media but also more complex ones such as Room Temperature <\/span>
Ionic Liquids (ILs) only constituted of ions, which are liquid at room temperature [1<\/span>–<\/span>3]. <\/span>Th<\/span>is <\/span>
class of solvents<\/span> is<\/span> interesting due to their very low volatility, versatility, large electrochemical <\/span>
domain, wide temperature range<\/span>.<\/span> They could be operational <\/span>up to a few 100\u00b0C <\/span>[4], in <\/span>
particular for<\/span> thermoelectric applications [<\/span>5<\/span>–<\/span>7<\/span>]. <\/span>
Stable colloidal<\/span> NP\u2019s dispersions in ILs are obtained at various concentrations (c) and <\/span>
temperatures (T). A well<\/span>–<\/span>adapted NP’s coating is necessary, chosen and controlled during <\/span>
the preparation through key parameters. Two kinds of interactions are of paramount <\/span>
importance, <\/span>namely the interaction NP\/solvent and the NP\/NP interaction. <\/span>
The colloidal stability and the NP\/NP interaction are probed by Small Angle Scattering of x<\/span>–<\/span>
rays and\/or neutrons. The parameters of NP\/solvent interaction are provided by the evolution <\/span>
of thermo<\/span>diffusion with c and T by Forced Rayleigh Scattering [8], where applying T<\/span>–<\/span>gradients <\/span>
at the microscale produces c<\/span>–<\/span>gradients thanks to Soret effect.<\/span>

Acknowledgements: <\/span>
This work has been supported by <\/span>the Brazilian agency CNPq, the bilateral program CAPES<\/span>–<\/span>
C<\/span>OFECUB n\u00b0 Ph 959\/20 and <\/span>the European Union\u2019s Horizon 2020 research and innovation <\/span>
programme under grant agreement n<\/span>o<\/span> 731976 (MAGENTA).<\/span>

[1] Mamusa M. et al, Soft Matter <\/span>10<\/span>, 1097<\/span>–<\/span>1101 (2013)<\/span>
[2] <\/span>Riedl J.C. <\/span>et al<\/span>, <\/span>Nanoscale Advances<\/span> 2<\/span>, 1560<\/span>–<\/span>1572 <\/span>(2020)<\/span>
[<\/span>3<\/span>] <\/span>Riedl J.C. <\/span>et al<\/span>, <\/span>J. Coll. Int. Sci. <\/span> 607<\/span>, <\/span>584<\/span>–<\/span>594<\/span> (202<\/span>2<\/span>)<\/span>
[4] Fiuza T. <\/span>et al,<\/span> Soft Matter<\/span> 17<\/span>, 4566 <\/span>–<\/span>4577 (2021).<\/span>
[5] Huang B. <\/span>et al, J. Chem. Phys. <\/span>143<\/span>, 054902 (2015).<\/span>
[6] Salez T.J. <\/span>et al, Phys. <\/span>Chem. Chem. Phys<\/span>. <\/span>19<\/span>, 9409<\/span>–<\/span>9416 (2017)<\/span>
[7] <\/span>Battacharya K. <\/span>et al<\/span>, <\/span>Chemical Engineering<\/span> 4<\/span>, 1<\/span>–<\/span>25 (2020)<\/span>
[8] Sarkar M. <\/span>et al<\/span>, <\/span>Eur. <\/span>Phys. J E<\/span> 42<\/span> , 72 1<\/span>–<\/span>10 (2019)<\/span>

\u00a0<\/div><\/div><\/div>
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R\u00e9gine Perzynski Professeur – Universit\u00e9 P. et M. Curie Laboratoire PHENIX, UMR 8234 Sorbonne Univ. \u2013 Paris Title: Colloidal Structure and Thermo-Diffusion of Magnetic-Nanoparticle Dispersions in Ionic Liquids Abstract: Magnetic nanoparticles (NPs) bearing a superficial electrostatic charge can be dispersed in various polar media but also more complex ones such as Room Temperature Ionic Liquids […]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/mami.u-strasbg.fr\/index.php\/wp-json\/wp\/v2\/pages\/1234"}],"collection":[{"href":"https:\/\/mami.u-strasbg.fr\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mami.u-strasbg.fr\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mami.u-strasbg.fr\/index.php\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/mami.u-strasbg.fr\/index.php\/wp-json\/wp\/v2\/comments?post=1234"}],"version-history":[{"count":3,"href":"https:\/\/mami.u-strasbg.fr\/index.php\/wp-json\/wp\/v2\/pages\/1234\/revisions"}],"predecessor-version":[{"id":1241,"href":"https:\/\/mami.u-strasbg.fr\/index.php\/wp-json\/wp\/v2\/pages\/1234\/revisions\/1241"}],"wp:attachment":[{"href":"https:\/\/mami.u-strasbg.fr\/index.php\/wp-json\/wp\/v2\/media?parent=1234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}