We developed a highly fluorinated photocrosslinkable nanocomposite that can be applied from solutions in fluorous solvents and has a higher refractive index (RI) compared to the conventional amorphous fluoropolymers. Its two main components are an aromatic fluoroalkylated epoxy binder (R_F-FDP-E) and fluoroalkyl ether-type phosphonic acid-substituted anatase titania (TiO₂-PEPA) nanoparticles. R_F-FDP-E had an RI of about 1.48 at 589 nm and the transmittance of its 270 nm thick film was around 92% in the visible light region. Thin films of R_F-FDP-E mixed with small amounts of a photoacid generator (PAG) could be photolithographically patterned by using commercially available hydrofluoroether (HFE) solvents, forming structures with a 10 μm size. The TiO₂-PEPA nanoparticles with an average diameter of 18 nm could also be transparently dissolved into the HFE solvents; the RI at 589 nm and transmittance in the visible light region of the resulting 280 nm thick films were 1.65 and 88%, respectively. The thin film (510 nm) obtained from a dissolved mixture of R_F-FDP-E and TiO₂-PEPA (50% in weight) exhibited RI and transmittance of 1.50 and 87%, respectively, and the original photopatterning properties were maintained.

我们开发了一种高度氟化的光可交联纳米复合材料，该复合材料可以从含氟溶剂中的溶液中施用，并且与传统的无定形含氟聚合物相比具有更高的折射率（RI）。它的两个主要成分是芳族氟烷基化环氧粘合剂（R _F -FDP-E）和氟烷基醚型膦酸取代的锐钛矿型二氧化钛（TiO ₂ -PEPA）纳米粒子。R _F -FDP-E在589nm处的RI为约1.48，并且其270nm厚的膜的透射率在可见光区域中为约92％。R _F -FDP-E薄膜可以通过使用市售的氢氟醚（HFE）溶剂对与少量光酸产生剂（PAG）混合的光刻胶进行光刻图案化，从而形成尺寸为10μm的结构。平均直径为18 nm的TiO ₂ -PEPA纳米颗粒也可以透明地溶于HFE溶剂中。所得到的280nm厚的膜在589nm的RI和在可见光区域的透射率分别为1.65和88％。由R _F -FDP-E和TiO ₂ -PEPA的混合溶液（重量50％）得到的薄膜（510nm）的RI和透射率分别为1.50和87％，并且保持了原始的光图案形成性能。