The closing seminar on the Global research collaboration program, in Kumamoto University, on "fabrication of organic photo-electro materials by molecular technology and interfacial assembling" will take place at 11h00, the 17th of March 2015, at the IECB (2 rue Robert Escapit, Pessac), and should last one hour. There will be 2 talks.
Photo-functional materials are utilized for various purposes, such as optics, memory, display, illumination, etc.Polymeric optics are light weight, and suitable for mass production by soft-process.
I will discuss two topics of polymeric photo-functional materials. The first concerns the modulation of the refractive index of polymer by composite with nano-material. By using of higher refractive index composite, metal-free multi-layered mirror was obtained. The second is about the photo-mechanical device. Recently, we suceeded in photo actuation of multi-layered film by single wavelength of VIS light .
We propose a new strategic method to create a transparent and functional polymer film, which is based on the nano-fibriallar phase separation of low molecular self-assembling compounds in polymer, and therefore the resultant aggregates in polymer are enough small to keep the transparency but also show supramolecular functions through molecular orientation.
In this paper, we demonstrate on the molecular design of photo-functional supramolecular gel-forming compounds, unique optical behaviors such as high Stokes shift, strong exciton coupling and circularly polarized luminescence in the supramolecular gel-polymer composite system, and some applications as a spectral conversion film for improvement of power conversion efficiency in solar cells.