Nanocrystallization Mechanism of Organic Compounds in the Reprecipitation Method by Stopped-Flow Analysis

被引：10

作者：

Oliveira, Daniel ^{[1
]}

Baba, Koichi ^{[1
]}

Mori, Junichi ^{[2
]}

Miyashita, Yousuke ^{[2
]}

Kasai, Hitoshi ^{[1
,3
]}

Oikawa, Hidetoshi ^{[1
]}

Nakanishi, Hachiro ^{[1
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

[2] FUJIFILM Corp, Anal Technol Ctr, Res & Dev Management Headquarters, Kanagawa 2500193, Japan

[3] Japan Sci & Technol Agcy, Precursory Res Embryon Sci & Technol, Chiyoda Ku, Tokyo 1020075, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2009年 / 48卷 / 10期

关键词：

NANOPARTICLE FORMATION; SIZE; GROWTH; CHEMISTRY; NUCLEATION; KINETICS; SOLVENT;

D O I：

10.1143/JJAP.48.105003

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nanoparticle formation by the reprecipitation method for three different types of aromatic compounds was investigated by monitoring induced spectral changes using the stopped-flow technique. The rate of nanocrystallization was determined under different conditions, as temperature, concentration, and type of solvent were systematically varied. It turned out qualitatively that on the millisecond order, nanocrystal growth is governed by the classical nucleation theory. It was found that the supersaturation ratio, and thus the solubility of the organic compound in a water/organic solvent mixture, is a key factor in understanding the kinetics of organic nanoparticle formation. Therefore, careful control of the supersaturation ratio is critical when controlling nanoparticle formation. (C) 2009 The Japan Society of Applied Physics

引用

页码：1050031 / 1050035

页数：5

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