Ordered Nanoporous Thin Films by Nanosphere Lithography and Diazonium Electroreduction: Simple Elaboration of Ultra‐Micro‐Electrode Arrays. Issue 12 (3rd November 2016)

• Record Type: Journal Article
• Authors: Nguyen, Van‐Quynh; Schaming, Delphine; Tran, Dai Lam; Lacroix, Jean‐Christophe
• Is Part Of: ChemElectroChem. Volume 3:Issue 12(2016)
• Page Start: 2264
• Page End: 2269
• Publication Date: 2016-11-03
• Subjects: diazonium electroreduction -- nanosphere lithography -- partially blocked surfaces -- ultra-microelectrode arrays -- ultrathin layers; Electrochemistry -- Periodicals; 541.37
• DOI: 10.1002/celc.201600420
• Languages: English
• ISSNs: 2196-0216

Abstract

Abstract: Highly ordered ultra‐micro‐electrode arrays are obtained using nanosphere lithography combined with electrochemical reduction of an aryl diazonium salt. A template made up of 2D hexagonally close‐packed polystyrene (PS) spheres was first deposited on indium tin oxide or glassy carbon substrates. Then, a thin layer of bisthienylbenzene (BTB) was grafted onto the interstices between the spheres. After dissolution of the PS spheres, the presence of micro‐hole arrays on the substrates was evidenced by atomic force microscopy. The electrochemical response of these micro‐hole arrays was investigated as a function of the size of the spheres used. Depending on their radius and the distance between adjacent holes, they behave as a partially blocked surface or as ultra‐microelectrode arrays (UMEAs). Abstract : Order on a tiny scale : Highly ordered ultra‐micro‐electrode arrays are made using nanosphere lithography combined with electrochemical reduction of an aryl diazonium salt. The electrochemical response of these micro‐hole arrays is investigated as a function of the size of the spheres used.