摘要
利用再沉淀法制得2,3,5,6-四苯乙烯基吡嗪的纳米球状颗粒,又利用溶剂交换法得到2,3,5,6-四苯乙烯基吡嗪的纳米或微米级棒状颗粒。通过ESEM和TEM对制得样品进行表征。并通过测试样品固体或液体的荧光,探讨了在不同聚集态下,样品的发光性质。发现聚集态的变化会引起分子最大荧光发射波长的变化,纳米小颗粒的分布越分散,颗粒越规整,其荧光波长越发生蓝移。
Nano- or micron-particles mostly composed of 2,3,5,6-tetra [ 2-（phenyl） vinyl ] pyrazine molecules was prepared by reprecipitation and solvent-exchange method successfully. ESEM, and TEM were used to characterize the structure of the particles. Their optical properties were obtained via testing the solid fluorescence of the panicles in different aggregation state. It revealed that the maximum fluorescence emission peak shifted to the shorter wavelength when the small panicles were improved their dispersion and order.
基金
山东省中青科学家科研奖基金资助项目(2005BS11011)
关键词
有机纳米材料
再沉淀法
溶液交换法
organic nano
reprecipitation method
solvent-exchange method
