苝纳米微晶的制备及其性质研究  

Preparation and Characteristics of Perylene Nanocrystals

作　　者：纪学海[1] 付红兵[1] 曹亚安[1] 谢锐敏[1] 张昕彤[1] 姚建年[1] 

机构地区：[1]中国科学院化学研究所,分子科学中心,北京100080

出　　处：《高等学校化学学报》2001年第8期1394-1396,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 98710 31);国家"九七三"项目 (批准号 :G19990 330 );中国科学院创新重大项目 (批准号 :KJCX1-Y-0 2 )资助

摘　　要：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 appeared in 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 injected into 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.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 appeared in 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 injected into 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.

关 键 词：Bei 再沉淀法 纳米微晶 尺寸效应 J-聚体制备 晶体结构 光谱 

分 类 号：O625.159[理学—有机化学] TB383[理学—化学]