%0 Journal Article %T Electrochemical Grafting of Aryl Diazonium Salts in Deep Eutectic Solvents %+ Institut des Sciences Chimiques de Rennes (ISCR) %A Lenne, Quentin %A Andrieux, Vivien %A Levanen, Gaël %A Bergamini, Jean-Francois %A Nicolas, Pauline %A Paquin, Ludovic %A Lagrost, Corinne %A Leroux, Yann R. %Z ANR-18-CE42-0011, Conseil National de la Recherche Scientifique %Z Université de Rennes 1 %Z Ministère de l'Enseignement Supérieur et de la Recherche %Z Agence Nationale de la Recherche %< avec comité de lecture %@ 0013-4686 %J Electrochimica Acta %I Elsevier %V 369 %P 137672 %8 2021-02 %D 2021 %R 10.1016/j.electacta.2020.137672 %K Deep eutectic solvent (DES) %K Aryl diazonium %K Surface functionalization %K Electro-grafting %Z Chemical Sciences/OtherJournal articles %X Deep eutectic solvents are seen as a new class of green and cheap solvents in electrochemical processes. Many electrochemical deposition techniques have been reported in the literature mainly focusing on metal electrodeposition and electro-polymerization. Here, we report for the first time the efficient electro-grafting of aryl diazonium salts on carbon surfaces using ethaline as an example of a natural and biodegradable deep eutectic solvent. Three different aryl diazonium salts have been tested, namely the 4-iodophenyldiazonium ion, 4-carboxymethylphenyl diazonium ion and 4-ethynylphenyldiazonium ion. Effect of concentration, deposition time and potential have been studied in relation to electrode blocking behavior toward redox probes in solution and deposited organic films thickness. Post-functionalization with redox active moieties is demonstrated on such electro-grafted organic layer to show their potential usefulness. %G English %2 https://univ-rennes.hal.science/hal-03127013/document %2 https://univ-rennes.hal.science/hal-03127013/file/Revised_Manuscript2.pdf %L hal-03127013 %U https://univ-rennes.hal.science/hal-03127013 %~ UNIV-RENNES1 %~ CNRS %~ INSA-RENNES %~ ENSC-RENNES %~ ISCR %~ SCR_MACSE %~ SCR_ICMV %~ UR1-SPM %~ INC-CNRS %~ UR1-UFR-SPM %~ UR1-HAL %~ ISCR-CORINT %~ UR1-SDLM %~ TEST-UR-CSS %~ UNIV-RENNES %~ INSA-GROUPE %~ ISCR-CORINT1 %~ TEST-HALCNRS %~ ANR %~ UR1-MMS %~ TEST2-HALCNRS