Electrochromic device using poly(3,4-ethylenedioxythiophene) and derivatives thereof
First Claim
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1. A complementary electrochromic device, comprising:
- a first conductive layer;
a second conductive layer, which may be the same as or different from the first conductive layer;
a cathodically coloring polymer layer in electrical contact with the first conductive layer;
an anodically coloring substance layer in electrical contact with the second conductive layer;
a transparent electrolyte layer positioned between and in contact with both the cathodically coloring polymer layer and the anodic coloring substance layer;
wherein;
upon application of a negative voltage to the first conductive layer relative to the second conductive layer, the cathodically coloring polymer layer and the anodically coloring substance layer are both in a low transmissivity state and upon application of a positive voltage to the first conductive layer relative to the second conductive layer, the cathodically coloring polymer and the anodically coloring substance layer are both in a high transmissivity state;
wherein;
the cathodically coloring polymer has the chemical structure;
wherein;
R1 is selected from the group consisting of [—
CH2—
]r —
CH2CH(R2)— and
—
CH2C(R3)(R4)CH2—
;
r is 1, 2, 3, or 4;
n is the number of repeat monomer units in the polymer;
R2 is selected from the group consisting of branched or straight-chain (1C-20C)alkyl, hydroxy(1C-20C)alkyl, methoxy(1C-20C)alkyl and phenyl;
R3 and R4 are independently selected from the group consisting of branched or straight-chain (1C-10C)alkyl and phenyl; and
, the anodically coloring substance comprises a chemical compound selected from the group consisting of an indium hexacyanometallate and a transition metal hexacyanometallate.
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Abstract
The present invention relates to complementary electrochromic devices comprising poly(3,4-ethylenedioxythiophene) and derivatives thereof as a cathodically coloring layer and an indium hexacyanometallate or transition metal hexacyanometallate as an anodically coloring layer.
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Citations
29 Claims
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1. A complementary electrochromic device, comprising:
-
a first conductive layer;
a second conductive layer, which may be the same as or different from the first conductive layer;
a cathodically coloring polymer layer in electrical contact with the first conductive layer;
an anodically coloring substance layer in electrical contact with the second conductive layer;
a transparent electrolyte layer positioned between and in contact with both the cathodically coloring polymer layer and the anodic coloring substance layer;
wherein;
upon application of a negative voltage to the first conductive layer relative to the second conductive layer, the cathodically coloring polymer layer and the anodically coloring substance layer are both in a low transmissivity state and upon application of a positive voltage to the first conductive layer relative to the second conductive layer, the cathodically coloring polymer and the anodically coloring substance layer are both in a high transmissivity state;
wherein;
the cathodically coloring polymer has the chemical structure;
wherein;
R1 is selected from the group consisting of [—
CH2—
]r —
CH2CH(R2)— and
—
CH2C(R3)(R4)CH2—
;
r is 1, 2, 3, or 4;
n is the number of repeat monomer units in the polymer;
R2 is selected from the group consisting of branched or straight-chain (1C-20C)alkyl, hydroxy(1C-20C)alkyl, methoxy(1C-20C)alkyl and phenyl;
R3 and R4 are independently selected from the group consisting of branched or straight-chain (1C-10C)alkyl and phenyl; and
,the anodically coloring substance comprises a chemical compound selected from the group consisting of an indium hexacyanometallate and a transition metal hexacyanometallate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification