Optical activity in the UV-NIR Region by Controlling Structural Chirality at the Molecular to Micro Level
발표자
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초록
내용
Chiral materials provide a rich platform for sensing, biomimetics, and optical applications. Tuning the wavelength range of optical activity is essential, and previously it was accomplished by controlling the geometry and the size of the materials. However, chiral nanomaterials with Near-Infra-red (NIR) optical activity are complex to develop because the material has to have both NIR absorption and optically active chiral centers. Here, we synthesized chiral nanoparticles using a chiral molecule, as the stabilizer, and induced hierarchically organized microstructures through self-assembly. The synthesized structures have an optical activity in the Ultraviolet (UV) to the NIR region (200-1400 nm), and even in the short wave infra-red (SWIR) region (1400-2500 nm), which is the first-observation. This study adds a new dimension to chiral ceramics as novel materials for developing next-generation optical devices and metamaterials, such as Light Detection and Ranging (LIDAR).