Composición electrocrómica y dispositivo electrocrómico que la utiliza

Una composición electrocrómica que comprende un componente catódico en forma de una sal cuaternaria de dipiridina, un componente anódico en forma de un derivado de ferroceno o un compuesto heterocíclico capaz de cambiar entre dos estados de oxidación, un espesante polimérico y un disolvente, en donde el componente catódico comprende una sal de catión de 1,1'-dialquil-4,4'-dipiridinio (grupo alquilo) y 1,1-(alcano-alfa (espaciador de alcano), omega-diil)-bis-(1'-alquil-4,4'-dipiridinio) con aniones débilmente coordinados. Electrochromic compositions for use in devices with electrically controlled absorption of light such as light filters of variable optical density, light emission modulators, and information image displays. The described electrochromic compositions may be used, for example, in construction industry for creating variably light-transmitting coatings of buildings for controlling indoor microclimate by dynamically regulating the flow of natural light. Specifically, described is an exemplary organic electrochromic composition that is based on biocompatible and biodegradable components and is characterized by an increased service life as well as a high rate of light-transmission change. The described electrochromic compositions may be prepared in a wide range of light-absorption spectra and coating colors.