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Size-effect on Fluorescence Spectrum of Perylene Nanocrystal Studied by Single-particle Microspectroscopy Coupled with Atomic Force Microscope Observation

Published online by Cambridge University Press:  01 February 2011

Hideki Matsune ,
Tsuyoshi Asahi ,
Hiroshi Masuhara ,
Hitoshi Kasai  and
Hachiro Nakanishi
Hideki Matsune
Affiliation:
Department of Applied Physics, Osaka University, Japan
Tsuyoshi Asahi
Affiliation:
Department of Applied Physics, Osaka University, Japan
Hiroshi Masuhara
Affiliation:
Department of Applied Physics, Osaka University, Japan
Hitoshi Kasai
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Japan
Hachiro Nakanishi
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Japan
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Abstract

This paper presents single particle fluorescence spectroscopy of perylene nanocrystals coupled with AFM observation of their topographic shapes. The fluorescence spectra of individual nanocrystals confirmed clearly and precisely a blue-shift in the excimer emission maximum on the reduction of their volume. The result can be explained in terms of “lattice softening”, which makes intermolecular interaction weaker and modified the energy level of the excimer state in nanocrystal.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 846: Symposium DD – Organic and Nanocomposite Optical Materials , 2004 , DD10.8
Copyright
Copyright © Materials Research Society 2005

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