Supramolecular Polymerization of Triarylamine-Based Macrocycles into Electroactive Nanotubes.

A -symmetric triarylamine-based macrocycle (i.e., hexaaza[1]paracyclophane), decorated with six lateral amide functions, is synthesized by a convergent and modular strategy.

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation.

We demonstrate a method for fabricating a prototype reflective display device that contains cholesteric liquid crystal (LC) as an active component. The cholesteric LC is composed of a nematic LC 4'-pentyloxy-4-cyanobiphenyl (5OCB), redox-responsive chiral dopant (D), and a supporting electrolyte 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (EMIm-OTf). The most important component is D.

Redox-Responsive Chiral Dopant for Quick Electrochemical Color Modulation of Cholesteric Liquid Crystal.

Here, we report the first redox-active chiral dopant D, which electrically alters its helical twisting power (HTP) for a cholesteric liquid crystalline (LC) medium and quickly changes the reflection color. D is composed of an axially chiral binaphthyl unit in conjunction with a redox-active ferrocene unit. A cholesteric LC phase of 4'-pentyloxy-4-cyanobiphenyl, doped with D (3.

Electrophoretic Deposition for Cholesteric Liquid-Crystalline Devices with Memory and Modulation of Reflection Colors.

The first design strategy that allows both memorization and modulation of the liquid-crystalline reflection color is reported. Electrophoretic deposition of a tailored ionic chiral dopant is key to realizing this unprecedented function, which may pave the way for the development of full-color e-paper that can operate without the need of color filters.