Preparation and Characteristics of Perylene Nanocrystals

Abstract

Abstract: Perylene nanocrystals with different sizes(10-250 nm) were prepared by reprecipitation. Compared with the absorption spectrum of perylene acetone solution, a new J-aggregate absorption peak appeareDIn the absorption spectra of nanocrystals. With the decrease of perylene nanocrystals' size, it shows a blue-shift in the absorption spectra. This blue-shift is due to the size dependent property. The perylene concentration of initial acetone solution or the amount of solution injecteDInto water, the aging time of organic nanocrystal dispersion and the adding of surfactant were the influencing factors of nanocrystal growth. We can gain the required microcrystals of different sizes by controlling the conditions of growth.

Key words: Perylene, Reprecipitation, Microcrystals, Size dependent effect, J-aggregate

CLC Number:

O625.15⁺9

TrendMD:

JI Xue-Hai, FU Hong-Bing, CAO Ya-An, XIE Rui-Min, ZHANG Xin-Tong, YAO Jian-Nian . Preparation and Characteristics of Perylene Nanocrystals[J]. Chem. J. Chinese Universities, 2001, 22(8): 1394.

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Preparation and Characteristics of Perylene Nanocrystals

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