有机超微粒的制备及其尺寸效应的研究

PREPARATION AND SIZE EFFECTS OF ORGANIC NANOPARTICLES

有机超微粒是国际上刚刚起步的研究领域 ,是纳米科技领域和有机光电子领域的重要前沿课题 .文章从有机功能小分子出发 ,在制备粒径和形状可控的、高度单分散的纳米超微粒的基础上 ,首次系统地研究了有机超微粒的电子态随尺寸大小的变化过程 .发现有机超微粒和无机超微粒一样具有显著的尺寸效应 ,而且更具多样性 .该项研究工作为探索和比较无机和有机材料介观尺寸效应的异同点这一科学问题奠定了坚实的基础 。

The search for ways to control the size, shape and hence properties of organic molecular crystals, well established for inorganic crystals, is an important aspect of possible developments in nanoscience. Using functional low molecular weight organic molecules we have successfully prepared a series of monodisperse nanoparticles with controllable size and shape. Their electronic states have been studied and mapped as a function of nanoparticle size. We find their organic nanoparticles also possess significant size effects, including optical size effects which may have useful applications in optoelectronic devices, and in the study of fundamental processes in conventional organic molecular crystals.