Title
Sequential process of chiral imprinting and composite formation allows to produce electrooptically active poly(bis-EDOT)/hydroxypropyl cellulose
Author
Kohei Yamabe, Hiromasa Goto
Year
2018
Journal
Advanced Composites and Hybrid Materials
Abstract
Poly(3,4-ethylenedioxythiophene) (PEDOT) is one of the promising conjugated polymeric materials for organic devices such as organic solar cell or organic electroluminescence display. Hydroxypropyl cellulose (HPC) is a product of chemical-modified cellulose. HPC shows liquid crystal at appropriate condition in solvents. HPC has been used for a binder of medicines and can be applied for green sustainable chemistry in materials science. In this study, poly(bis-(3,4-ethylenedioxythiophene)), abbreviated as poly(bis-EDOT), film is prepared in cholesteric liquid crystals with electrochemical polymerization. We employ a dimer of EDOT (bis-EDOT) as a monomer because bis-EDOT shows good affinity with liquid crystals and the linear shape of bis-EDOT allows pre-orientation in liquid crystal prior to polymerization. The polymer film thus prepared in cholesteric liquid crystals (CLC) shows characteristic circular dichroism (CD) derived from 3-D asymmetric super structure. This study demonstrates that polymerization of the linear-shaped bis-EDOT can effectively imprint 3-D asymmetric structure from HPC as a polymer CLC matrix and form conductive polymer/non-conductive polymer composite.
Instrument
J-720
Keywords
Circular dichroism, Polymers, Cotton effect, Chemical stability