Electrochemical synthesis of copper(I) dicyanamide thin films

• Published in: Journal of electroanalytical chemistry (Lausanne, Switzerland) Vol. 819; pp. 331 - 337
• Main Authors: Rayée, Quentin, Phuong Thu, Nguyen, Segato, Tiriana, Delplancke-Ogletree, Marie-Paule, Doneux, Thomas, Buess-Herman, Claudine
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.06.2018; Elsevier Science Ltd
• Subjects: Anions; Blown films; Coordination polymers; Copper; Copper(I); Copper(II); Dicyanamide; Electrochemical analysis; Electrodes; Electron transfer; Electrosynthesis; Gold; Infrared reflection; Polymer films; Polymer processing; Scanning electron microscopy; Thin film; Thin films; Copper(I); Dicyanamide; Electrosynthesis; Copper(II); Thin film
• ISSN: 1572-6657; 1873-2569
• DOI: 10.1016/j.jelechem.2017.11.001

The electrochemical behaviour of Cu(II) ions has been investigated in acidic aqueous solutions in the presence of dicyanamide (dca), an anion frequently used as bridging agent in coordination polymers. The cyclic voltammograms recorded at a gold electrode have revealed two consecutive one electron transfer processes indicating that Cu(I) is stabilized by the dicyanamide anion at the electrode surface. The formation of an insoluble film after reduction of Cu(II) to Cu(I) was evidenced by EQCM measurements and imaged by scanning electron microscopy. XRD and infrared reflection spectroscopy data have confirmed the formation of a Cu(I)-dca film. [Display omitted] •In presence of the dicyanimide anion (dca−), Cu(I) is stabilized over Cu(II).•A film of Cu(I)-dca is formed on Au as evidenced by EQCM, SEM, XRD and IR data.•Film is formed in dca− solutions both by reduction of Cu(II) or oxidation of Cu(0).