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US 11,111,321 B2Granted
Photocrosslinkable neutral electrochromic polymers and method for preparing same
AssigneeAmbilight Inc.
InventorsLiyan You, Jiazhi He, Jianguo Mei
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Abstract
Various photocrosslinkable electrochromic polymers are disclosed. The polymers are suitable for an electrochromic layer of an electrochromic device. The polymers are formed with a two-step synthesis method that includes forming a polymer precursor with one or more chromophore blocks, and mixing the polymer precursor with photocrosslinkable monomer units to form the polymer.
Claims16
A polymer comprising a formula of:
- wherein n is an integer greater than 0;
- x is an integer greater than 0;
- y is an integer greater than 0;
- z is an integer greater than 0;
- M is a monomer unit;
- and each of R1, R2, R3 and R4 is independently selected from one of hydrogen, C1-C30 alkyl, C2-C30 alkenyl, C2-C30 alkynyl, C2-C30 alkylcarbonyl, C1-C30 alkoxy, C1-C30 alkoxyalkyl, or C2-C30 alkoxycarbonyl;
- and
- wherein M is selected from a group including:
- wherein the wavy line represents a single covalent bond, and each of R5, R6, R7, R8, R9, R10, R11, and R12 is independently selected from one of hydrogen, C1-C30 alkyl, C2-C30 alkenyl, C2-C30 alkynyl, C2-C30 alkylcarbonyl, C1-C30 alkoxy, C1-C30 alkoxyalkyl, or C2-C30 alkoxycarbonyl.
6 more elements
Dependencies are inferred from the claim text.