Development of light and electric field-responsive novel ionic cholesteric liquid crystals

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K17886
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Functional solid state chemistry
• Research Institution: Hokkaido University
• Principal Investigator: Kim Yuna 北海道大学, 電子科学研究所, 助教 (00648131)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 液晶 / キラルドーパント / 光異性化

Outline of Final Research Achievements

In this project, ionic liquid crystals were synthesized exhibiting nematic phases near the room temperature and over a wide range of temperature. Next, ionic chiral azobenzene dopants with high helical twisting power were synthesized. The ionic cholesteric liquid crystals (CLC) were successfully obtained by doping the ionic chiral azobenzenes in several nematic liquid crystals including the dimer type ionic liquid crystal. The resultant CLC showed facile control of its helical pitch upon both UV/visible light irradiation and electric field, accompanying the switching of reflection colors as well as light scattering (shutter) properties.

Free Research Field

有機光電材料