Synthesis of oxidation-resistant electrochemical-active copper nanowires using phenylenediamine isomers. (15th January 2019)

• Record Type: Journal Article
• Authors: Zhang, Tan; Daneshvar, Farhad; Wang, Shaoyang; Sue, Hung-Jue
• Is Part Of: Materials & design. Volume 162(2019)
• Page Start: 154
• Page End: 161
• Publication Date: 2019-01-15
• Subjects: Copper nanowires -- Phenylenediamine -- Anti-oxidation -- Cu (I) complex -- Electrochemical properties; Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2018.11.043
• Languages: English
• ISSNs: 0264-1275

Abstract

Abstract: Phenylenediamine (PDA) was chosen as a coordinating, reducing, and capping agent to effectively direct growth and protect against oxidation of Cu nanowires (Cu NWs) in an aqueous solution. PDA was found to reduce Cu (II) to Cu (I) at room temperature, and stabilize the resulting Cu (I) by forming a coordination complex. The presence of a stable, intermediate Cu (I) complex is an essential step in the synthesis of Cu NWs under mild conditions. Incorporation of different PDA isomers leads to different growth paths of forming Cu NWs. Both p PDA and m PDA-synthesized Cu NWs are covered with a thin layer of polyphenylenediamine and show excellent oxidation-resistant in boiling water (3 days), and long-term stability in water at room temperature (10 months). The polyPDA-coated Cu NWs are electrochemically active even after a long-term storage in water. The usefulness of the oxidation-resistant electrochemical-active Cu NWs prepared here for a variety of nanotechnology applications is discussed. Graphical abstract: Highlights: Cu nanowire/polyphenylenediamine core/shell structures were first time synthesized under a mild condition by forming a Cu (I) intermediate. As-synthesized Cu nanowires show excellent oxidation-resistant in boiling water (3 days), and long-term stability in water at room temperature (10 months). As-synthesized Cu nanowires are electrochemically active even after 10 months of storage in water.