The spontaneous formation and plasmonic properties of ultrathin gold–silver nanorods and nanowires stabilized in oleic acid

Julian Crespo (1) , José López-De-Luzuriaga (1) , Miguel Monge (1) , M. Elena Olmos (1) , María Rodríguez-Castillo (2) , Benoit Cormary (2) , Aikaterini Soulantika (2) , Matteo Sestu (3) , Andrea Falqui (4)

1 CISQ - Centro de Investigación en Síntesis Química
2 LPCNO - Laboratoire de physique et chimie des nano-objets
3 Dipartimento di Scienze Chimiche e Geologiche Centro Grandi Strumenti and INSTM unit
4 King Abdullah Univ Sci & Technol, Biol & Environm Sci & Engn BESE Div, Nabla Lab, Thuwal 239556900, Saudi Arabia

Ultrathin Au–Ag alloy nanorods and nanowires of different lengths and ca. 1.9 nm diameter are prepared through a low-temperature decomposition of the precursor [Au2Ag2(C6F5)4(OEt2)2]n in oleic acid. This nanostructure formation has been studied through TEM, HRTEM, EDS, HS-SPME-GC-MS and 19F NMR spectroscopy. The UNRs and UNWs display a length-dependent broad band in the mid-IR region that is related to the longitudinal mode of the surface plasmon resonance of the ultrathin nanostructures.

Domaines: Chimie

Julian Crespo, José López-De-Luzuriaga, Miguel Monge, M. Elena Olmos, María Rodríguez-Castillo, et al.. The spontaneous formation and plasmonic properties of ultrathin gold–silver nanorods and nanowires stabilized in oleic acid. Chemical Communications, 2015, 51 (93), pp.16691-16694. ⟨hal-02018779⟩