US 12,071,501 B2
Electrochromic block copolymers and devices made with such copolymers
Marcus A. Brinks, Grand Rapids, MI (US); and Joshua P. McClure, Jenison, MI (US)
Assigned to GENTEX CORPORATION, Zeeland, MI (US)
Filed by Gentex Corporation, Zeeland, MI (US)
Filed on Feb. 15, 2023, as Appl. No. 18/110,225.
Claims priority of provisional application 63/310,739, filed on Feb. 16, 2022.
Prior Publication US 2023/0257504 A1, Aug. 17, 2023
Int. Cl. C08F 293/00 (2006.01)
CPC C08F 293/00 (2013.01) [C08F 2810/40 (2013.01)] 13 Claims
 
1. A medium for an electro-optic element, comprising:
a first electrochromic block copolymer unit comprising:
at least one selected from the group of a first di-block copolymer and first tri-block copolymer; and
at least one of a first donor compound and first acceptor compound conjugated with the at least one of the first di-block copolymer and first tri-block copolymer, wherein the at least one of the first donor compound and the first acceptor compound is electrochromic, thereby forming the first electrochromic block copolymer unit; and
a second electrochromic block copolymer unit comprising:
at least one selected from the group of a second di-block copolymer and second tri-block copolymer; and
at least one of a second donor compound and second acceptor compound conjugated with the at least one of the second di-block copolymer and second tri-block copolymer, wherein the at least one of the second donor compound and the second acceptor compound is electrochromic, thereby forming the second electrochromic block copolymer unit, and
wherein the first electrochromic block copolymer unit is polymerized with the second electrochromic block copolymer unit, thereby forming a repeating polymer.