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Directing Dynamic Control of Red, Green, and Blue Reflection Enabled by a Light‐Driven Self‐Organized Helical Superstructure
Author(s) -
Li Quan,
Li Yannian,
Ma Ji,
Yang DengKe,
White Timothy J.,
Bunning Timothy J.
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201103362
Subject(s) - superstructure , materials science , reflection (computer programming) , wavelength , optics , optoelectronics , cholesteric liquid crystal , liquid crystal , nanotechnology , computer science , physics , programming language , thermodynamics
Two light‐driven chiral molecular switches possessing very high helical twisting powers were introduced into an achiral liquid crystal host enabling a self‐organized, tunable helical superstructure. Marrying reflection wavelength to the wavelength of irradiation offers a distinctive and novel means to simultaneously achieve red, green, and blue reflection colors in a single optical thin film. Photoaddressing of the material system allows for images to be retained, which are hidden with an applied electrical field and restored by application of a mechanical field.