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Seed Assisted Phase Control of TiOPc: Application of Microfluidic Mixing

Published online by Cambridge University Press:  01 February 2011

Enkhtuvshin Dorjpalam ,
Hiroyuki Nakamura ,
Kenichi Yamashita ,
Masato Uehara  and
Hideaki Maeda
Enkhtuvshin Dorjpalam
Affiliation:
enkhtshn@yahoo.com
Hiroyuki Nakamura
Affiliation:
nakamura-hiroyuki@aist.go.jp, National Institute of Advanced Industrial Science and Technology (AIST), Nanotechnology Research Institute, 801 Shuku, Tosu, Saga, 841-0052, Japan
Kenichi Yamashita
Affiliation:
yamashita-kenichi@aist.go.jp, National Institute of Advanced Industrial Science and Technology (AIST), Nanotechnology Research Institute, 801 Shuku, Tosu, Saga, 841-0052, Japan
Masato Uehara
Affiliation:
m.uehara@aist.go.jp, National Institute of Advanced Industrial Science and Technology (AIST), Nanotechnology Research Institute, 801 Shuku, Tosu, Saga, 841-0052, Japan
Hideaki Maeda
Affiliation:
maeda-h@aist.go.jp, United States
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Abstract

Microfluidic mixing was applied to conventional acid pasting process to re-crystallize organic nanocrystals of Titanyl phthalocyanine (TiOPc). TiOPc nanocrystals were re-crystallized in a two step process. Seed particles were prepared by mixing TiOPc, dissolved in concentrated sulfuric acid with deionized water using high speed microchannel mixers. Seed particles were then subjected to post-precipitation treatment to achieve final crystalline product. Effects of seed preparation conditions, such as mixing efficiency (mixer type) and mixing temperature on the structure of final product were studied. Time evolution of optical absorption spectra was examined with a view to elucidate structure evolution during early stages of seed formation process.

Keywords

phase transformationcolloidsolution deposition
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1272: Symposia KK/LL/NN/OO/PP – Integrated Miniaturized Materials-From Self-Assembly to Device Integration , 2010 , 1272-KK09-10
Copyright
Copyright © Materials Research Society 2010

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References

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