在油酸中稳定的超薄金银纳米棒和纳米线的自发形成及其等离子体特性。

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

作者信息

Crespo Julian, López-de-Luzuriaga José M, Monge Miguel, Olmos M Elena, Rodríguez-Castillo María, Cormary Benoît, Soulantica Katerina, Sestu Matteo, Falqui Andrea

机构信息

Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química (CISQ), Complejo Científico-Tecnológico, 26006-Logroño, Spain.

出版信息

Chem Commun (Camb). 2015 Dec 4;51(93):16691-4. doi: 10.1039/c5cc05542c. Epub 2015 Oct 2.

DOI:10.1039/c5cc05542c

PMID:26430906

Abstract

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 (19)F 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.

摘要

通过前驱体[Au2Ag2(C6F5)4(OEt2)2]n在油酸中的低温分解，制备出了不同长度且直径约为1.9 nm的超薄金 - 银合金纳米棒和纳米线。通过透射电子显微镜（TEM）、高分辨率透射电子显微镜（HRTEM）、能谱仪（EDS）、顶空固相微萃取 - 气相色谱 - 质谱联用仪（HS - SPME - GC - MS）以及氟 - 19核磁共振光谱（(19)F NMR）对这种纳米结构的形成进行了研究。超薄纳米棒（UNRs）和超薄纳米线（UNWs）在中红外区域显示出与超薄纳米结构表面等离子体共振纵向模式相关的长度依赖性宽带。