ELECTROACTIVE MATERIAL CONTAINING ORGANIC COMPOUNDS WITH RESPECTIVELY POSITIVE AND NEGATIVE REDOX ACTIVITIES, METHOD AND KIT FOR MAKING SUCH MATERIAL, ELECTRICALLY CONTROLLED DEVICE AND GLAZING USING SUCH ELECTROACTIVE MATERIAL

• Main Authors: PETIT, PASCAL, ANDREAU-WIEDENMAIER, ANNABELLE, PIROUX, FABIENNE
• Format: Patent
• Language: English; French
• Published: 15.01.2009
• Subjects: ADHESIVES; CHEMISTRY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DYES; FREQUENCY-CHANGING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The electroactive material of the invention includes a self-sustained polymer matrix in which is inserted an electroactive system including or made of: at least one electroactive organic compound capable of reduction and/or accepting electrons and cations serving as compensation charges; at least one electroactive organic compound capable of oxidation and/ejecting electrons and cations serving as compensation charges; at least one of the above electroactive organic compounds being electrochromous for obtaining a colour contrast of ionic charges; and a liquid for solubilizing said electroactive system, wherein said liquid does not solubilize the self-sustained polymer matrix, the latter being selected so as to provide a percolation path for the ionic charges, which results, upon the application of a dielectric current, in oxidation and reduction reactions of said electroactive organic compounds which are necessary for obtaining a colour contrast. Ce matériau électroactif comprend une matrice polymère autosupportée dans laquelle est inséré un système électroactif comprenant ou constitué par: - au moins un composé organique électroactif capable de se réduire et/ou d'accepter des électrons et des cations jouant le rôle de charges de compensation; - au moins un composé organique électroactif capable de s'oxyder et/ou d'éjecter des électrons et des cations jouant le rôle de charges de compensation; au moins l'un desdits composés organiques électroactifs précités étant électrochrome pour obtenir un contraste de couleur, des charges ioniques; ainsi qu'un liquide de solubilisation dudit système électroactif, ledit liquide ne solubilisant pas ladite matrice polymère autosupportée, cette dernière étant choisie pour assurer un chemin de percolation des charges ioniques, ceci permettant, sous l'action d'un courant diélectrique, des réactions d'oxydation et de réduction desdits composés organiques électroactifs, lesquelles sont nécessaires pour obtenir un contraste de couleur.