Size and Morphology Control of Organic nanocrystals

研究发现，再沉淀法生成有机纳米晶的动力学符合经典的成核理论。然后，过饱和度是决定纳米粒子大小的关键因素。利用这些知识，对于颜料纳米晶，也可以制备尺寸约为15 nm的精细颜料纳米晶。此外，结果表明，再沉淀法制备的纳米滤色片的对比度比传统方法制备的颜料晶体的对比度高出数倍。

In this study, it was found that the kinetics on generation of the organic nanocrystals in the reprecipitation method follow a classic nucleation theory. And then, supersaturation ratio is a critical factor determining the nanoparticle size in the the method. Using these knowledges, regarding the pigment nanocrystals, fabrication of the fine sized pigments nanocrystals with around 15 nm in size could also be achieved. Tn addition, it was shown that the contrast ratio of color filter of nanocrystals prepared by the reprecipitation method gave several times greate than that of pigment crystals fabricated by the conventional technique.