Tunable and long-lived light reflection from liquid crystals using hydrazone dopants
AssigneeTrustees of Dartmouth College
InventorsIvan Abrahamian, Indu Bala
Life of this patent
Estimating the term…
Abstract
Embodiments of the present disclosure pertain to at least one chiral compound with a photo-switchable unit. Additional embodiments of the present disclosure pertain to substrates that include one or more compounds of the present disclosure. Further embodiments of the present disclosure pertain to methods of changing a color of one or more regions of a substrate of the present disclosure by applying light to the one or more regions of the substrate.
Claims44
A chiral compound, wherein the chiral compound is selected from the group consisting of:
- or derivatives thereof,
- wherein at least one of R1 and R2 comprises a photo-switchable unit, and
- wherein R1 and R2 are each independently selected from the group consisting of alkyl groups, alkene groups, alkenyl groups, alkoxy groups, hydroxy groups, aryl groups, ketone groups, aldehyde groups, amine groups, amide groups, imine groups, carboxyl groups, carboxylic acid groups, ester groups, thiol groups, sulfoxide groups, alcohol groups, alkyne groups, azide groups, hydrazide groups, hydrazone groups, azo groups, cyano groups, nitro groups, halogens, a methyl group, a polymer, a substrate component, a photo-switchable unit, or combinations thereof.
3-4. (canceled)
A substrate comprising one or more regions, wherein the one or more regions are associated with a chiral compound selected from the group consisting of:
- or derivatives thereof,
- wherein at least one of R1 and R2 comprises a photo-switchable unit, and
- wherein R1 and R2 are each independently selected from the group consisting of alkyl groups, alkene groups, alkenyl groups, alkoxy groups, hydroxy groups, aryl groups, ketone groups, aldehyde groups, amine groups, amide groups, imine groups, carboxyl groups, carboxylic acid groups, ester groups, thiol groups, sulfoxide groups, alcohol groups, alkyne groups, azide groups, hydrazide groups, hydrazone groups, azo groups, cyano groups, nitro groups, halogens, a methyl group, a polymer, a substrate component, a photo-switchable unit, or combinations thereof.
10-11. (canceled)
18-19. (canceled)
A method of changing a color of one or more regions of a substrate, said method comprising:
- applying light to the one or more regions of the substrate,
- wherein the one or more regions of the substrate comprises a chiral compound selected from the group consisting of
- or derivatives thereof,
- wherein at least one of R1 and R2 comprises a photo-switchable unit, and
- wherein R1 and R2 are each independently selected from the group consisting of alkyl groups, alkene groups, alkenyl groups, alkoxy groups, hydroxy groups, aryl groups, ketone groups, aldehyde groups, amine groups, amide groups, imine groups, carboxyl groups, carboxylic acid groups, ester groups, thiol groups, sulfoxide groups, alcohol groups, alkyne groups, azide groups, hydrazide groups, hydrazone groups, azo groups, cyano groups, nitro groups, halogens, a methyl group, a polymer, a substrate component, a photo-switchable unit, or combinations thereof.
22-23. (canceled)
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53-54. (canceled)
Dependencies are inferred from the claim text.