Preparation of Perylenediimide Nanoparticle Colloids by Laser Ablation in Water and Their Optical Properties
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概要
- 論文の詳細を見る
Fluorescent nanoparticles of N,N$ '$-bis(2,5-di-tert-butylphenyl)-3,4,9,10-perylenedicarboximide (DBPI) were fabricated by laser ablation of its microcrystals dispersed in pure water, and their optical extinction and fluorescence spectra were investigated. Colloidal nanoparticles withmean sizes of 30 to 80 nm were prepared without molecular decomposition by tuning the fluence of the irradiating laser. Spectral simulation based on Mie theory explains the difference in the absorption spectra of the nanoparticles and a DBPI vapor-deposited film. The fluorescence of the nanoparticle colloids showed a monomer-like emission band with a vibrational structure, while the initial microcrystals exhibited a broad excimer band. These results indicate that the DBPI nanoparticles have crystal morphologies different from those of microcrystals.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2010-06-25
著者
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Asahi Tsuyoshi
Department Of Applied Physic And Frontier Research Center Osaka University
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Tsuyoshi Asahi
Department of Applied Physics, Osaka University, Suita, Osaka 565-0871, Japan
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Yasukuni Ryohei
Department of Applied Physics, Osaka University, Suita, Osaka 565-0871, Japan
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Hironaka Takayuki
Department of Applied Physics, Osaka University, Suita, Osaka 565-0871, Japan
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Ryohei Yasukuni
Department of Applied Physics, Osaka University, Suita, Osaka 565-0871, Japan
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Takayuki Hironaka
Department of Applied Physics, Osaka University, Suita, Osaka 565-0871, Japan
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