2013 Fiscal Year Final Research Report

Spectroscopic properties of dye aggregates on the spherical and nonspherical noble metal nanoparticles

Research Project

Project/Area Number	23655184
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Multi-year Fund
Research Field	Organic industrial materials
Research Institution	University of Tsukuba
Principal Investigator	SATO Tomoo 筑波大学, 数理物質系, 准教授 (50205944)
Project Period (FY)	2011 – 2012
Keywords	色素 / 色素会合体 / Ｊ会合体 / 分子励起子 / 貴金属ナノ粒子 / 表面プラズモン / 分光学的特性
Research Abstract	We have reported that silver nano-particles covered with J-aggregate of cyanine dye showed the characteristic spectroscopic properties. In this study, we have examined the effect of particle shapes and sizes on the characteristic spectroscopic properties of the spherical and nonspherical noble metal nanoparticles covered with dye aggregate. As a result of this study, we found that the characteristic spectroscopic properties, which are presumed to be originated from the interaction between exciton and surface plasmon, changed with the particle shapes and sizes.

(3 results)