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Formation of Nanoparticles of Organic Molecules by Liquid Laser Ablation

Published online by Cambridge University Press:  31 July 2012

Ikuko Akimoto ,
Masahiro Ohata ,
Nobuhiko Ozaki  and
Gu Ping
Ikuko Akimoto
Affiliation:
Faculty of Systems Engineering, Wakayama University, Sakaedani 930, Wakayama 640-8510, Japan
Masahiro Ohata
Affiliation:
Faculty of Systems Engineering, Wakayama University, Sakaedani 930, Wakayama 640-8510, Japan
Nobuhiko Ozaki
Affiliation:
Faculty of Systems Engineering, Wakayama University, Sakaedani 930, Wakayama 640-8510, Japan
Gu Ping
Affiliation:
Faculty of Education, Wakayama University, Sakaedani 930, Wakayama 640-8510, Japan
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Abstract

We carried out laser ablation of three organic molecules, rubrene (Rb), Oralith Brilliant Pink R (BP) and quinacridonequinone (QQ) in a poor solvent, water. As a result, nanoparticles of BP and QQ were formed, but those of Rb were not formed because of photodissociation. For a rigid molecule, QQ, optical properties of colloidal solutions were investigated in relation to the size of the included nanoparticles. A linear correlation between the blue shift of the absorption peak energy and the decrease in the diameter of the nanoparticles was found, indicating that the nanoparticle diameter can be easily estimated from the absorption spectrum of a colloidal solution. From the solution, a nanoparticle film was fabricated on an electrode by the electrophoretic deposition method.

Keywords

nanoscaleorganicablation
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1455: Symposium II – Nanoscale Materials Modification by Photon, Ion, and Electron Beams , 2012 , mrss12-1455-ii08-04
Copyright
Copyright © Materials Research Society 2012

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