Optically configurable charge-transfer materials and methods thereof
View Patent ↗The present invention relates to an optical code including a film of a charge-transfer material, as well as methods thereof. Described herein are optical codes having anisotropic and/or isotropic regions within the film, which can be provided in a pattern that serves as an optical code.
1. An optical code comprising:
a film comprising a charge-transfer material, wherein the charge-transfer material comprises a plurality of domains,
wherein each of the plurality of domains comprises a donor moiety and an acceptor moiety; and
a pattern disposed within the film, in which the pattern comprises a plurality of first regions and a plurality of second regions,
wherein each of the plurality of first regions comprises a first optically anisotropic phase comprising a plurality of aligned domains arranged in an aligned columnar phase characterized by a first columnar director, and
wherein each of the second regions comprises an optically isotropic phase comprising a plurality of domains lacking alignment along the first columnar director or a second optically anisotropic phase comprising a plurality of aligned domains arranged in an aligned columnar phase characterized by a second columnar director that is different than first columnar director.
2. The optical code of claim 1 , wherein the optically isotropic phase of the second regions comprises an isotropic region of the charge-transfer material.
3. The optical code of claim 1 , wherein the second optically anisotropic phase of the second regions comprises the second columnar director that is orthogonal to the first columnar director.
4. The optical code of claim 3 , wherein the pattern further comprises a plurality of third regions, wherein each of the third regions comprises a third optically anisotropic phase comprising a plurality of aligned domains arranged in an aligned columnar phase characterized by a third columnar director that is different than the first columnar director and the second columnar director.
5. The optical code of claim 1 , wherein the pattern further comprises a plurality of third regions, wherein each of the third regions comprises a third optically anisotropic phase comprising a plurality of aligned domains arranged in an aligned columnar phase characterized by a third columnar director that is different than the first columnar director.
6. The optical code of claim 1 , wherein the donor moiety comprises a structure of any one of (I), (Ia), (II), (IIa), (III), (IIIa), (IV), (IVa), (V), (Va), (VI), and (VII), or a salt thereof.
7. The optical code of claim 1 , wherein the acceptor moiety comprises a structure of any one of (VIII), (IX), (X), (XI), (XII), and (XIII), or a salt thereof.
8. The optical code of claim 1 , wherein the donor moiety comprises a structure of any one of (I), (Ia), (II), and (IIa), or a salt thereof; and wherein the acceptor moiety comprises a structure of any one of (VIII) and (XIII), or a salt thereof.