Direct Laser Writing Of Nanosized Oligofluorene Truxenes In Uv-transparent Photoresist Microstructures

摘要

Recently, the incorporation of nanoscaled inorganic components into organic photoresist hosts to produce photocurable composite materials, has been reported. Combining highly processable photoresists with nanoscaled inorganic quantum dots or nanocrystals in this way creates an attractive method for the production of photonic-device structures, including single-photon sources, waveguides, and lasers. Due to the recognized incompatibilities between functional organic light-emitting molecules and conventional photolithography materials, the fabrication of all-organic microstructures presents a significant technological challenge. In this paper, we report the incorporation of nanosized oligofluorene truxenes into a novel UV-transparent organic photoresist material, as an alternative approach to fluorescent nanocomposites. Oligofluorene truxenes are a new class of monodisperse organic light-emitting molecules. The blending of oligofluorene truxenes and a UV-transparent photoresist enables photoprocessing of individually dispersed nanoscopic organic light-emitting molecules within a microstructured UV-transparent matrix. These blends will allow the creation of all-organic optical-device structures for a wide range of photonic applications.