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US 2017/0321002 A1Published application
Multicolored electrochromic polymer compositions and methods of making and using the same
AssigneeFurcifer Inc.
InventorsJianguo Mei, Yan Zhou
Life of this patent
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Abstract
This disclosure relates generally to electrochromic polymers that include a plurality of π-conjugated chromophores in spaced relation with one another, and a plurality of conjugation-break spacers (CBSs), where at least one CBS separates adjacent chromophores. The chromophores may be colored in the neutral state, and multicolored to transmissive in different oxidization states.
Claims19
An electrochromic polymer, comprising:
- a plurality of π-conjugated chromophores in spaced relation with one another, wherein each π-conjugated chromophore is colored in a neutral state, and is colored or transmissive in an oxidized state;
- and
- a plurality of conjugation-break spacers (CBSs), wherein at least one CBS separates adjacent π-conjugated chromophores.
A method for preparing at least a portion of an electrochromic polymer, the method comprising:
- combining three or more monomer units in a solvent, wherein the three or more monomer units comprise complementary reactive functional groups;
- and
- cross-coupling the three or more monomer units to yield a π-conjugated copolymer sequence.
Dependencies are inferred from the claim text.