| Abstract: | A facile route to reassemble titania nanoparticles within the titania‐block copolymer composite films has been developed. The titania nanoparticles templated by the amphiphilic block copolymer of poly(styrene)‐block‐poly (ethylene oxide) (PS‐b‐PEO) were frozen in the continuous PS matrix. Upon UV exposure, the PS matrix was partially degraded, allowing the titania nanoparticles to rearrange into chain‐like networks exhibiting a closer packing. The local structures of the Titania chain‐like networks were investigated by both AFM and SEM; the lateral structures and vertical structures of the films were studied by GISAXS and X‐ray reflectivity respectively. Both the image analysis and X‐ray scattering characterization prove the reassembly of the titania nanoparticles after UV exposure. The mechanism of the nanoparticle assembly is discussed. |
