One-dimensional(1D)nanomaterials based on functional organic molecules have captured more and more interests in the past couple of years.[1,2] Besides the strikingly different optoelectronic properties from those of their inorganic counterparts,organic nanomaterials also have some advantages in good doping property,high reaction activity,good processability,high photoluminescence(PL)efficiency,etc,which make them complementary to the inorganic materials.The recent progress in unique photonic properties of organic 1D nanostructures will be introduced in this talk.A series of crystalline nanoscaled organic materials have been synthesized.With these materials,we achieved red-green-blue(RGB)multicolor emission,color tunable emission,and white emission,and applied them as sub-wavelength optical waveguide and miniaturized lasers as shown in Figure 1.