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제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Characterizing Optical Properties of Palladium-coated Single Gold Nanorods

2016년 7월 28일 14시 03분 09초
ANAL1.O-7 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
목 10시 : 05분
분석화학 - Oral Presentation of Young Analytical Chemists Ⅰ
저자 및
이소영, 하지원*
울산대학교 화학과, Korea
Gold nanoparticles have received a lot of interest in the last decade because of their unique optical properties, and their potential applications include catalysis, nanophotonics, and bioimaging. Compared to spherical gold nanoparticles, anisotropic-shaped gold nanorods (AuNR) exhibit two localized surface plasmon resonance (LSPR) modes, longitudinal LSPR mode and transverse LSPR mode. The LSPR modes of AuNRs are strongly dependent on size, shape, and the refractive index of surrounding medium. In recent year, core-shell bimetallic nanorods have also received considerable attention because of their distinct photochemical and photophysical properties. The distinct properties are due to synergetic effect of two different metals. Despite the recent progress in the synthesis of core-shell bimetallic nanorods, our understanding on their optical properties is still very limited at the single particle level. In this respect, we studied optical properties of palladium-coated core-shell AuNRs at the single particle level. The single particle measurement allowed us to eliminate the ensemble error and to gain more specific understanding on their optical properties. In this study, the core-shell nanoparticles were characterized by transmission electron microscopy (TEM), UV-Vis absorption spectrometry, dark-field (DF) microscopy, and differential interference contrast (DIC) microscopy.