Switchable nematic emulsions are composite systems formed by liquid-crystal droplets dispersedin a fluid, homogeneous, monomer matrix. These systems can be switched from an opaque to atransparent state by application of a suitable alternating electric field. An electrochromic deviceprovides a reversible and visible change in its transmittance as a result of either oxidizing orreducing electrochemical processes. A photochromic device provides a reversible and visiblechange in its transmittance as the result of a single chemical transformation of the species inducedby suitable electromagnetic radiation. These devices have been proven to be useful for a variety ofelectro-optical applications as switchable windows, electromagnetic shutters, and displays. Ourarticle reports preliminary results on trifunctional devices based on nematic emulsions that hostelectrochromic and photochromic guest molecules. These trifunctional films are able to modulatethe light transmission (with an external alternating electric field) and to change their color (withstatic field or UV light) by means of suitable electric fields or electromagnetic radiation.
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|Titolo:||Photoelectrochromic switchable nematic emulsions|
|Data di pubblicazione:||2007|
|Citazione:||Photoelectrochromic switchable nematic emulsions / Lanzo, J; DE BENEDITTIS, M; DE SIMONE, Bruna Clara; Imbardelli, Daniela; Formoso, Patrizia; Manfredi, S; Chidichimo, Giuseppe. - In: JOURNAL OF MATERIALS CHEMISTRY. - ISSN 0959-9428. - 17:14(2007), pp. 1412-1415.|
|Appare nelle tipologie:||1.1 Articolo in rivista|