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WO2006008776A1 - Materiau electrochrome, autoportant, solide, organique - Google Patents

Materiau electrochrome, autoportant, solide, organique Download PDF

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Publication number
WO2006008776A1
WO2006008776A1 PCT/IT2005/000416 IT2005000416W WO2006008776A1 WO 2006008776 A1 WO2006008776 A1 WO 2006008776A1 IT 2005000416 W IT2005000416 W IT 2005000416W WO 2006008776 A1 WO2006008776 A1 WO 2006008776A1
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Prior art keywords
electrochromic
film
ramate
linear
groups
Prior art date
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Ceased
Application number
PCT/IT2005/000416
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English (en)
Inventor
Giuseppe Chidichimo
Daniela Cupelli
Maurizio De Benedittis
Giovanni De Filpo
Jessica Lanzo
Pasquale Nicoletta Fiore
Bartolo Gabriele
Giuseppe Salerno
Lucia Veltri
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TEBAID-CONSORZIO PER LE TECNOLOGIE AVANZATE
Original Assignee
TEBAID-CONSORZIO PER LE TECNOLOGIE AVANZATE
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Priority to EP05769502A priority Critical patent/EP1786883A1/fr
Publication of WO2006008776A1 publication Critical patent/WO2006008776A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K9/00—Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some form of energy
    • C09K9/02—Organic tenebrescent materials
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/1514—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material
    • G02F1/1516—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material comprising organic material
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10—Non-macromolecular compounds
    • C09K2211/1003—Carbocyclic compounds
    • C09K2211/1007—Non-condensed systems
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10—Non-macromolecular compounds
    • C09K2211/1018—Heterocyclic compounds
    • C09K2211/1025—Heterocyclic compounds characterised by ligands
    • C09K2211/1029—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/1514—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material
    • G02F2001/15145—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material the electrochromic layer comprises a mixture of anodic and cathodic compounds

Definitions

  • the present invention concerns an organic solid electrocliromic material obtainable by drugging of preexistant polymeric solid films, with electrochromic molecules and plasticizing molecules.
  • Such material has a characteristic to self support and, hence, can be fabbricated both in sheets adapted to be subsequently laminated between glaze or plastic surfaces and in laminas with conducting surfaces utilizable without additional supports and in forms different from that planar.
  • the traditional organic electrochromic materials are thin films which change their colour when an electric field, generally with low intensity, is applied to them.
  • the active substances which are specific for electro-chromism, migrating towards the electrodes, are subjected to oxyde-reducting processes which change their colour.
  • Such substances are defined anodic substances when they migrate towards the anode (positive electrode), and catodic substances when they migrate towards the catode (negative electrode).
  • electrochromic films of organic nature consisting of organic electrochromic substances dissolved in other organic substances
  • electrochromic pseudosolid films The main difference between these two categories of films consists in the fact that in the first ones the active substances, or the substances that change their colour, are dissolved in organic mixtures of liquid type.
  • Anodic and catodic substances are free to move inside the fluid solution and can easily migrate towards the electrodes, guaranteeing a rather rapid cromatic reponse compared to electric stimules application.
  • these systems have different disadvantages connected to their fluidity.
  • the polymeric part must possess "grids" sufficiently broad to permit the diffusion of the molecules provided with electro- chromatic character. If the "freezing" process of electrochromic fluid solutions is pushed over certain limits enhancing the quantity of polymerizable monomers present in the formulations, a clear elongation of chromatic response period to the electric stimule is verified, compared to that of fluid systems. Another inconvenience of the freezing processes is constituted by the complexity of the industrial processes related to the self-supported films fabbrication. In a recent patent 3 the possibility to obtain electrochromic self-supported solid films polymerizing, by exposing to U.V.
  • the material object of the present invention presents various innovative elements compared to those patented previously.
  • thermoplastic materials will conserve in large part these initial properties because these polymers will remain the more represented components in the final formulations.
  • polyvinylic, polyacrylic, polyuretanic, polyethylenic, polysulfonic, polycarbonatic and generally all thermoplastic polymers having the property to fluidificate on heat below the organic substances decomposition temperature (typically below 200 °C) can be related.
  • Plasticizing substances of low molecular weight which have properties such to confer to the final electrochromic materials opportune optical, mechanical, laminability, adhesion, elastical properties.
  • Electrochromic substances soluble in the polymers and plasticizers mentioned above having the spectral properties adequate to realize the desired electro-chromatic transitions.
  • the active electrochromic molecules don't migrate through the material in order to transport themselves on the electrodes, differently from what happens in the electrochromic films related to previous inventions, being the material itself constituted by a solid plastic matrix.
  • the activation of the only electrochromic molecules mounted inside the matrix near the electrodes is not sufficient to impart the colorationis perceivable by a human eye. It is necessary to activate electrically the electrochromic molecules present in the entire or large part of the material volume in order to obtain effective chromatical transitions. It can be realized permitting the migration of electronic charges through the material by means of adequate molecular mechanisms of electronic charge transport.
  • molecules capable to realize processes of electronic charge transport are inserted in the material formulation together with the electro- chromichal molecules.
  • Such materials can be represented by conductive polymers like polyacethylens, polythiophens, polyfurans or olygomers of low molecular weight of the same compost class.
  • the electronic conduction through the material can occur both by charge transfer between electrochromic and conductive molecules and between various conductive molecules, but also by means of typical polaronic mechanisms which are determined inside the conductive polymers and olygomers.
  • the materials with long electrochromic memory will be able to find advantageous usages in the applications where it is needed to maintain the system coloured for a long time without using the current circuling through the material. This will allow to pilote devices of large surface with alimentators or batteries with very low energetic erogations.
  • Another innovative aspect presented by the electrochromic materials object of the present invention is constituted by the fact that it is possible to diffuse outside the polymeric matrix a particular class of plasticizers of liquid crystalline nature. It is known that when liquid crystals are diffused inside a polymeric film, a part of this component is separated inside the material in mycroscopical anisotropic drops, which confer to the film interesting electro-optical properties.
  • the so called Polymer Dispersed Liquid Crystals (PDLC) 4 are obtained whose transparence can be varied from an opacity state to that of perfect transparence after the application of alternate electric field.
  • An electrochromic film obtained according to present invention in which the right percentage of a liquid crystalline plasticizer has been inserted, can, hence, have a double function of light transmission control. On one hand, it can be coloured by means of an electrical impulse DC (direct current) and on the other hand it can be carried from an opacity state to that of perfect transparency by application of alternating electric fields of opportune intensity and frequency. Such functions can be activated independently.
  • the materials object of present invention can also be specialized for the modulation of the infrared radiation through large surfaces, and find interesting applications of solar control type.
  • the solid electrochromic film object of the present invention can be prepared according to the following procedure.
  • Such mixture is prepared in bulk on heat at an opportune temperature, which allows the fluidification of the polymeric weight and the consequent incorporation in it of all the other components. Subsequently, the plastic mass become homogeneous is transported in the desired form by means of extrusion or mould processes according to the generation of a planar development film or electrochromic materials of different form. If needed, in order to facilitate the mixing of the components mentioned above, it is possible to add one or more than one low- boiling solvents, which can be removed in the mixing phase.
  • the film object of the invention can be obtained in different final formulations, according to the characteristics desired by the applicative responsibilities like: the electro-chromism type (colors between which the film operates), the reologic parameters, electrochromic reponse times, the tensions and the operational currents etc.
  • the film can be composed only by a majoritary polymer, destinated to have a support function, by the only electrochromic substance, intrinsically capable to transfer electrical charges through the material, by a solvent and/or plasticizer highly boiling.
  • This solution is suitable when: the memory films are needed to obtain in which the charging processes induced by the electrodes, being the slightly conducting material, endure also in absence of the electrodic polarization induced from outside.
  • the films of the electrochromic material object of present invention will be able to be laminated between the conductive glasses or analogous plastic conductive supports, in order to generate composite cells particularly useful in the housing and automobile industry. It is necessary to underline that the electrochromic material structure, being self-supporting and laminable, allows to extend the modern industrial processes of obtaining of special glasses to the obtaining of electrochromic special glasses of large surface.
  • electrochromic cells can be obtained without recoursing to further support surfaces, depositing highly-conducting layers of both organic and inorganic type, on two opposite faces of a planar film.
  • Superficial conductive layers of organic type can be realized on the faces of the film, putting the film in an opportunely concentrated solution of a conducting polymer, and evaporing subsequently the solvent.
  • the conductive layers of inorganic type can, on the contrary, be realized by a deposition of metals or conductive oxydes in vacuum. After adding the conducting surface layers, it will be necessary to deposit isolating protection layers with analogous procedures. This procedure can be extended also by non planar forms, generating so tridimensional electrochromic objects.
  • R can be chosen inside the following group: H, alchylic linear or ramate chains, alchilphenyl or alcossiphenyl linear or ramate groups, aromatic groups.
  • .-Mir OH n can vary from 1 to 10.
  • DHA Di hexyl adipate
  • the electronic charge tranferring molecules used have been chosen from the following composts classes: where R 1 , R 2 , R 3 , and R 4 , can be equal or different and can be chosen in the following groups: H, alchylic linear or ramate chains, alchilphenyl or alcossiphenyl linear or ramate groups, aromatic groups;
  • the film can contain charge transferers of conducting polymeric or olygomeric types of the following classes:
  • R 4 , R 5 , R 6 , R 7 , R 8 can be equal or chosen in the following groups: ramate chains, alchilphenyl or or ramate groups, aromatic groups with R. 9 alchylic linear or ramate chains or an aromatic group,
  • R 9 n can vary between 1 and 10.
  • alcossiphenyl linear or ramate groups aromatic groups
  • n can vary between 1 and 10.
  • H alchylic linear or ramate chains
  • alchilphenyl or alcossiphenyl linear or ramate groups aromatic groups.
  • Benzophenone 1 35-tri 4,4'-Diaminodiphenyl ether (DADF) hydroxybenzene (THB)
  • R can be: H, alchylic linear or ramate chains, alchilphenyl or alcossiphenyl linear or ramate groups, aromatic groups.
  • the electrochromic mol ⁇ ecuiles absorbing in can the visible region can be chosen between the following composts classes:
  • R which can be a phenol or phenossi group, an alchylic linear or ramate chain or an alcossilic group, a normal or substituted cyclealcan;
  • n is an integer comprised between 1 and 20.
  • n comprised between 1 and 20.
  • R 1, R 2 , R 3 , R 4 , R 5 , R 6, R 7 , R 8 , and R 9 can be equal or different and can be chosen in the following groups: H, linear or ramate alchylic substitutents, alchilphenyl ramate or linear chains, or phenylic alcossis, phenyls and other aromatic groups, -CN, F, Cl, -OH.
  • p can be comprised between 0 and 20, q and r can vary between 1 and 5.
  • R 3 , R 4 , e R 5 can be equal or can be chosen in the following linear or ramate alchylic alcossilic or phenossilic, other aromatic groups, -CN, F,
  • R 1, R 2 , R 3 , and R 4 that can be different or equal and can be chosen inside the following group: linear or ramate alchylic substitutents, alcossylic or phenossylic substitutents, phenylics.
  • the obtained film is deposited between conducting glasses using spacers with diameter of 65 ⁇ m.
  • the film manifests a chromatic variation from yellow pale to blue in the period inferior to 1 sec, and decolorizes spontaneously (after the electric field is off) in 1 second.
  • the obtained film is deposited between conducting glasses using spacers with diameter of 65 ⁇ m.
  • the film manifests a chromatic variation from yellow pale to blue in the period inferior to 1 sec and decolorizes spontaneously (after the electric field is off) in 3 seconds.
  • the obtained film is deposited between conducting glasses using spacers with diameter of 65 ⁇ m.
  • the film manifests a chromatic variation from yellow pale to blue in the period inferior to 1 sec and decolorizes spontaneously (after the electric field is off) in 8 seconds.
  • the obtained film is deposited between conducting glasses using spacers with diameter of 65 ⁇ m.
  • the film manifests a chromatic variation from yellow pale to blue in the period of 6 seconds and decolorizes spontaneously (after the electric field is off) in 10 seconds.
  • the film manifests a chromatic variation from yellow pale to blue in the period of 20 seconds and decolorizes spontaneously (after the electric field is off) in 3 minutes.
  • the obtained film is deposited between conducting glasses using spacers with diameter of 65 ⁇ m.
  • the film manifests a chromatic variation from yellow pale to blue in the period of 30 seconds and decolorizes spontaneously (after the electric field is off) in 10 minutes.
  • the obtained film is deposited between conducting glasses using spacers with diameter of 65 ⁇ m.
  • the film manifests a chromatic variation from yellow pale to blue in the period of 40 seconds and decolorizes spontaneously (after the electric field is off) in 10 minutes.
  • the obtained film is deposited between conducting glasses using spacers with diameter of
  • the film manifests a chromatic variation from yellow pale to blue in the period of 1 second and decolorizes spontaneously (after the electric field is off) in 20 seconds.
  • EGO 31% has been prepared and homogenized under shaking with a temperature of 150-200 0 C.
  • the obtained film is deposited between conducting glasses using spacers with diameter of
  • the film manifests a chromatic variation from yellow pale to blue in the period of 1 second and decolorizes spontaneously (after the electric field is off) in 3 hours.
  • DMF dimethylformammide
  • DMF dimethylformammide
  • DMF dimethylformammide
  • DMF dimethylformammide
  • DMF dimethylformammide
  • DMF dimethylformammide
  • the film manifests a chromatic variation from yellow pale to blue in the period inferior to 1 sec under the action of a very weak intensity voltage and decolorizes spontaneously (after the electric field is off) in 1 hour.
  • DMF dimethylformammide
  • DMF dimethylformammide
  • DMF dimethylformammide
  • DMF dimethylformammide
  • DMF dimethylformammide
  • R 4 R 5 ⁇ CH 2 CO 2 CH 3 (T9)+TCE+DMF+ EGO
  • DMF dimethylformammide
  • V4 1.224%
  • the solvent (DMF) is eliminated by heating at ca. 160 °C.
  • the obtained film is deposited between conducting glasses using spacers with diameter of 65 ⁇ m. The film manifests a chromatic variation from yellow pale to blue in the period inferior to 1 sec under the action of a very weak intensity voltage and decolorizes spontaneously (after the electric field is off) in 10 hours.
  • Example 50 Film components: PMMA+ V4+TCE+PC +AO7
  • the solvent (dichlorometane) is eliminated by heating at 40-50 0 C.
  • the obtained film is deposited between conducting glasses using spacers with diameter of 65 ⁇ m. The film manifests a chromatic variation from transparent to deep blue in the period inferior to 1 sec under the action of a very weak intensity voltage and decolorizes spontaneously (after the electric field is off) in 2 minutes.
  • R 4 R 5 ⁇ CH 2 CO 2 CH 3 (T6) +TCE+V4+PC
  • R 4 R 5 ⁇ CH 2 CH 2 OCH 3 (T31)+TCE+V4+PC
  • the solvent (dichlorometane) is eliminated by heating at ca. 40-50 0 C.
  • the obtained film is deposited between conducting glasses using spacers with diameter of 65 ⁇ m. The film manifests a chromatic variation from light pink to violet in the period inferior to 0.1 sec under the action of a very weak intensity voltage and decolorizes spontaneously (after the electric field is off) in 5 minutes.
  • the obtained film is deposited between conducting glasses using spacers with diameter of
  • the film manifests a chromatic variation from yellow pale to blue in the period of 1 sec under the action of a very weak intensity voltage and decolorizes spontaneously (after the electric field is off) in 10 hours.
  • the obtained film is deposited between conducting glasses using spacers with diameter of
  • the film manifests a chromatic variation from pale yellow to blue in the period of 2-3 seconds order under the action of a very weak intensity tension and decolorizes spontaneously
  • the electrochromic PDLC film is obtained.
  • the alternate electric field to be applied in order to obtain a pure opaque transparent transition is of 1 V/ ⁇ m
  • the alternate electric field to be applied in order to obtain a pure opaque transparent transition is of 1.2 V/ ⁇ m
  • the alternate electric field to be applied in order to obtain a pure opaque transparent transition is of 0.9 V/ ⁇ m
  • the alternate electric field to be applied in order to obtain a pure opaque transparent transition is of 1.0 V/ ⁇ m
  • the alternate electric field to be applied in order to obtain a pure opaque transparent transition is of 1.0 V/ ⁇ m
  • the alternate electric field to be applied in order to obtain a pure opaque transparent transition is of 0.7 V/ ⁇ m

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

L'invention concerne un nouveau type de matériau électrochrome, solide, organique, pouvant être obtenu par combinaison de pellicules polymères, pré-existantes, solides, avec des molécules électrochromes et des molécules plastifiantes. Ce matériau est autoportant et peut, par conséquent, être fabriqué sous forme de couches continues destinées à être laminées par la suite entre une surface en verre ou en plastique, sous forme de couches avec des surfaces conductrices pouvant être utilisées sans autres supports, et sous des formes différentes non planes. Ces produits autoportants et ces composites laminés entre des supports en verre ou en plastique, qui sont obtenus à partir d'une pellicule électrochrome, se caractérisent par un niveau de transparence et un électrochromatisme élevés, leur couleur pouvant changer sous l'effet d'un champ électrique faible. Un mode de réalisation de cette pellicule contient des microgouttes de cristaux liquides, conférant à la fois des caractéristiques électrochromes et des caractéristiques électro-optiques d'une pellicule PDLC à la pellicule. Dans ce mode de réalisation, il est possible de modifier la couleur et la transparence de la pellicule. Le temps de réponse électrochrome peut varier en fonction des préparations chimiques utilisées. Dans un mode de réalisation plus rapide, le temps de réponse est inférieur à celui des pellicules électrochromes liquides. Le matériau est préparé sur la base d'un procédé de fabrication consistant à refroidir des mélanges obtenus par dissolution à la chaleur des polymères préformés et à contrôler la teneur en molécules électrochromes ou d'autres substances comme polymères ou oligomères conducteurs ou plastifiants. Le matériau de la présente invention se distingue des matériaux électrochromes utilisés actuellement par sa composition et sa préparation particulières, mais également par le fait qu'il ne nécessite pas forcément de supports en verre ou en plastique. Les pellicules fabriquées à partir de ce matériau peuvent être laminées entre d'autres supports conducteurs. Cependant, certains modes de réalisation de ces matériaux peuvent être utilisés sans autres supports. Dans ce cas, les couches de matériau organique ou inorganique à conductivité électrique élevée et des couches supplémentaires d'isolation externe doivent être appliquées sur leurs surfaces. Dans un des modes de réalisation, le matériau peut être produit avec une transparence variable. Pour ce faire, on ajoute aux préparations des quantités adaptées de plastifiants cristallins liquides. (PDLC électrochrome)
PCT/IT2005/000416 2004-07-20 2005-07-20 Materiau electrochrome, autoportant, solide, organique Ceased WO2006008776A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05769502A EP1786883A1 (fr) 2004-07-20 2005-07-20 Materiau electrochrome, autoportant, solide, organique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITCS2004A000008 2004-07-20
IT000008A ITCS20040008A1 (it) 2004-07-20 2004-07-20 Materiale elettro - cromico organico, solido, autosostenuto

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WO2006008776A1 true WO2006008776A1 (fr) 2006-01-26

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IT (1) ITCS20040008A1 (fr)
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009095507A1 (fr) 2008-01-31 2009-08-06 Fundacion Cidetec Compositions électrochimiques à base de viologènes pouvant être formulées et appliquées à température ambiante
WO2010063729A1 (fr) * 2008-12-04 2010-06-10 Saint-Gobain Glass France Dispositif electrocommandable a epaisseur controlee de milieu electro-actif et de fabrication simplifiee et son procede de fabrication
WO2011003076A2 (fr) 2009-07-02 2011-01-06 University Of Florida Research Foundation, Inc. Electrochromes polymères conjugués solubles à motifs donneurs-accepteurs alternés
US7988885B2 (en) 2006-06-23 2011-08-02 E. I. Du Pont De Nemours And Company Electrochromic electrolyte blends
FR2956667A1 (fr) * 2010-02-23 2011-08-26 Saint Gobain Technical Fabrics Materiau electroactif
CN102243407A (zh) * 2010-05-13 2011-11-16 株式会社理光 电致变色显示元件
US8287767B2 (en) 2006-06-23 2012-10-16 E.I. Du Pont De Nemours And Company Amorphous polymers with pendant chromogenic groups
US8323534B2 (en) 2009-12-18 2012-12-04 E I Du Pont De Nemours And Company Thermoplastic electrochromic materials
EP3182197A1 (fr) * 2015-12-15 2017-06-21 Ricoh Company, Ltd. Élément électrochromique
CN107824168A (zh) * 2017-11-13 2018-03-23 广东工业大学 一种有机纳米多孔聚合物和吸附饮用水中重金属的方法
CN112662389A (zh) * 2021-01-08 2021-04-16 深圳市华科创智技术有限公司 一种电致变色材料及其制备方法

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ES2324807B1 (es) * 2008-01-31 2010-05-31 Fundacion Cidetec Composiciones electrocromicas basadas en viologenos formulables y aplicables a temperatura ambiente.
WO2009095507A1 (fr) 2008-01-31 2009-08-06 Fundacion Cidetec Compositions électrochimiques à base de viologènes pouvant être formulées et appliquées à température ambiante
WO2010063729A1 (fr) * 2008-12-04 2010-06-10 Saint-Gobain Glass France Dispositif electrocommandable a epaisseur controlee de milieu electro-actif et de fabrication simplifiee et son procede de fabrication
FR2939526A1 (fr) * 2008-12-04 2010-06-11 Saint Gobain Dispositif electrocommadable a epaisseur controlee de milieu electro-actif et de fabrication simplifiee et son procede de fabrication
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EP2449051A4 (fr) * 2009-07-02 2014-09-03 Univ Florida Foundation Inc Electrochromes polymères conjugués solubles à motifs donneurs-accepteurs alternés
US8323534B2 (en) 2009-12-18 2012-12-04 E I Du Pont De Nemours And Company Thermoplastic electrochromic materials
FR2956667A1 (fr) * 2010-02-23 2011-08-26 Saint Gobain Technical Fabrics Materiau electroactif
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EP2386901A1 (fr) * 2010-05-13 2011-11-16 Ricoh Company, Ltd. Élément d'affichage électrochromique
US8531754B2 (en) 2010-05-13 2013-09-10 Ricoh Company, Ltd. Electrochromic display element
CN102243407A (zh) * 2010-05-13 2011-11-16 株式会社理光 电致变色显示元件
EP3182197A1 (fr) * 2015-12-15 2017-06-21 Ricoh Company, Ltd. Élément électrochromique
US10054834B2 (en) 2015-12-15 2018-08-21 Ricoh Company, Ltd. Electrochromic element
CN107824168A (zh) * 2017-11-13 2018-03-23 广东工业大学 一种有机纳米多孔聚合物和吸附饮用水中重金属的方法
CN107824168B (zh) * 2017-11-13 2020-03-27 广东工业大学 一种有机纳米多孔聚合物和吸附饮用水中重金属的方法
CN112662389A (zh) * 2021-01-08 2021-04-16 深圳市华科创智技术有限公司 一种电致变色材料及其制备方法

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