| 초록 |
In particular, as for a macroscale template, inverse opal (IO) structures based on colloidal self-assembly have been extensively explored because of their structural regularity and controllability. However, reported approaches of constructing double periodic IO structures eventually disrupting the intrinsic porosity of the primary IO phase. To overcome this limitation and realize the multiscale porous nanoarchitectures over a large area, in this study, we present a means of creating hierarchical IO structures using core-shell structured colloidal. By means of selective removal of the colloidal shell, instead of entirely dissolving the internal colloid, we eventually create the colloidal particle nested inverse opal (CPN-IO) structures. CPN-IO structures hold several structural advantages in that the internal porosity is readily tuned by the control over core-shell ratio of the colloidal particles and uniform-sized nanochannels(5- 50nm) can be created through the interconnected pores of the primary IO frame. CPN-IO structures can be applied for the separation of nanoparticles with high selectivity. |
