| 초록 |
Micron-sized polydiacetylene (PDA) vesicle patterns on silicon substrates were successfully fabricated by using an electrohydrodynamic (EHD) jet printing technique. EHD jet printing technique is attractive due to their noncontacting nature and their compatibility with diverse materials and substrate types. The values of applied voltage, working distance, and substrate properties affect on the morphology of patterns, and those are investigated by using SEM and AFM. PDAs are composited by the radiation (UV or γ-ray)-induced polymerization of molecularly assembled diacetylene monomers in the absence of chemical initiators or catalysts. Heat-treatment of the solid substrate, immobilized with blue-phase PDAs, induces a blue-to-red-phase transition and results in the formation of patterned fluorescence images. This investigation has led to the development of a new strategy for the fabrication of conjugated polymer patterns on solid substrates. When combined with the novel optical properties of polydiacetylenes, this methodology should enhance the versatility of conjugated polymers in sensor and optical applications. |
