Characteristics of gold nanorods and their applications to analytical sciences

Yukina Takahashi, Natsuko Ide, Sunao Yamada

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Gold nanorods (AuNRs), which are rod-shaped gold nanoparticles, exhibit unique localized surface plasmon resonance (LSPR) on the basis of their anisotropic shape. Particularly, the longitudinal mode of LSPR, based on the oscillation of free electrons, appears in the near infra-red region, and generates much stronger electric fields as compared to spherical nanoparticles. In addition, it exhibits a larger peak shift, depending on the refractive indices of the surrounding medium, as compared with the case of spherical nanoparticles. Furthermore, the anisotropic shape leads to drastic changes in the optical properties of AuNRs, depending on their agglomeration (organization) conditions. Accordingly, AuNRs are expected to be promising in various fields, such as polarized filters, photoenergy conversion systems, sensors, and so on. In this paper, resent research results on AuNRs carried out in our group will be summarized from the viewpoints of analytical science.

Original languageEnglish
Pages (from-to)551-561
Number of pages11
Journalbunseki kagaku
Volume63
Issue number7
DOIs
Publication statusPublished - Jan 1 2014

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

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