US 12,168,714 B2
All-donor black electrochromic polymer and method for preparing same
Liyan You, West Lafayette, IN (US); and Jianguo Mei, West Lafayette, IN (US)
Assigned to AMBILIGHT INC., Milpitas, CA (US)
Filed by AMBILIGHT INC., Milpitas, CA (US)
Filed on Jun. 25, 2021, as Appl. No. 17/359,175.
Claims priority of provisional application 63/052,487, filed on Jul. 16, 2020.
Prior Publication US 2022/0017689 A1, Jan. 20, 2022
Int. Cl. C08G 61/12 (2006.01); C09K 9/02 (2006.01)
CPC C08G 61/126 (2013.01) [C09K 9/02 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An electrochromic polymer comprising at least two conjugated polymers,
wherein,
the electrochromic polymer and the at least two conjugated polymers consist of electron donor groups,
the electrochromic polymer presents a black color at a colored state, and
the electrochromic polymer comprises a formula of

OG Complex Work Unit Chemistry
wherein,
each of R1-R8 is independently selected from the group consisting of hydrogen, C1-C30 alkyl, C2-C30 alkenyl, C2-C30 alkynyl, C2-C30 alkylcarbonyl, C1-C30 alkoxy, C3-C30 alkoxyalkyl, C2-C30 alkoxycarbonyl, C4-C30 alkoxycarbonylalkyl, C1-C30 aminylcarbonyl, C4-C30 aminylalkyl, C1-C30 alkylaminyl, C1-C30 alkylsulfonyl, C3-C30 alkylsulfonylalkyl, C6-C18 aryl, C3-C15 cycloalkyl, C3-C30 cycloalkylaminyl, C5-C30 cycloalkylalkylaminyl, C5-C30 cycloalkylalkyl, C5-C30 cycloalkylalkyloxy, C1-C12 heterocyclyl, C1-C12 heterocyclyloxy, C3-C30 heterocyclylalkyloxy, C1-C30 heterocyclylalkyloxy, C1-C30 heterocyclylaminyl, C5-C30 heterocyclylalkylaminyl, C2-C12 heterocyclylcarbonyl, C3-C30 heterocyclylalkyl, C1-C13 heteroaryl, and C3-C30 heteroarylalkyl; and n, n1, and n2 are integers greater than 0.