A new approach to micropatterning: application of potential-assisted ion transfer at the liquid-liquid interface for the local metal deposition

Citation:

Yatziv Y, Turyan I, Mandler D. A new approach to micropatterning: application of potential-assisted ion transfer at the liquid-liquid interface for the local metal deposition. J Am Chem SocJournal of the American Chemical Society. 2002;124 (20) :5618 - 9.

Date Published:

2002///

Abstract:

A new approach to micropatterning is demonstrated. The approach is based on driving an electrochemical process at the solid-liquid interface through the formation of a flux of ions from a micropipet that is held in close proximity to the surface. The flux of ions is generated by the so-called potential assisted ion transfer at the interface between two immiscible electrolyte solutions (ITIES). As a model system, the local deposition of silver was examined. Specifically, a constant potential, which was applied to a micropipet filled with an aqueous solution of silver ions, caused the transfer of Ag(+) into the outer nitrobenzene (NB) solution that consisted of an electrolyte, tetrabutylammonium tetrakis[4-chlorophenyl]borate (TBATPBCl). To facilitate the transfer of silver ions a macrocyclic ligand, that is, dibenzo-24-crown-8 (DB24C8), was added to the organic phase. The Faradaic current of this micro-ITIES was used as a means of controlling the tip-surface distance in scanning electrochemical microscopy (SECM) and depositing silver microstructures on a gold substrate.[on SciFinder (R)]

Notes:

MEDLINE AN 2002271963(Journal; Article; (JOURNAL ARTICLE))