High-density non-volatile memory devices incorporating thiol-derivatized porphyrin trimers
AssigneeNorth Carolina State University
InventorsPeter C. Clausen, Jonathan S. Lindsey
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Abstract
The present invention provides high density, non-volatile memory devices incorporating winged trimers of porphyrinic macrocycles. In preferred embodiments, the two wing porphyrinic macrocycles are the same, and both are different from the center macrocycle. Such molecules are relatively easy to synthesize, have four different and distinguishable oxidation states, and thus provide molecules, information storage media and apparatus that store two bits of information.
Claims84
An apparatus for storing data, said apparatus comprising:
- a fixed electrode electrically coupled to
- a storage medium having a plurality of different and distinguishable oxidation states wherein data is stored in said oxidation states by the addition or withdrawal of one or more electrons from said storage medium via the electrically coupled electrode;
- and wherein said storage medium comprises a molecule having the formula:
- wherein
- P1 and P3 are porphyrinic macrocycles selected to have the same oxidation state;
- P2 is a porphyrinic macrocycle selected to have an oxidation state different from P1 and P3 ;
- J1 and J2 are independently selected linkers that permit electron transfer between the porphyrinic macrocycles;
- Q1 and Q2 are each independently selected linkers;
- wherein said storage medium comprises a molecule having at least four different and distinguishable oxidation states.
An information storage medium, said storage medium comprising at least one storage molecule such that said storage medium has at least two different and distinguishable non-neutral oxidation states;
- and wherein said storage medium comprises a molecule having the formula:
- wherein
- P1 and P3 are porphyrinic macrocycles selected to have the same oxidation state;
- P2 is a porphyrinic macrocycle selected to have an oxidation state different from P1 and P3;
- J1 and J2 are independently selected linkers that permit electron transfer between the porphyrinic macrocycles;
- Q1 and Q2 are each independently selected linkers;
- and wherein said storage medium comprises a molecule having at least four different and distinguishable oxidation states.
A molecule for the storage of information, said molecule having the formula:
- wherein
- S1, S2, S3, and S4 are substituents independently selected from the group consisting of aryl, phenyl, cycloalkyl, alkyl, halogen, alkoxy, alkylthio, perfluoroalkyl, perfluoroaryl, pyridyl, cyano, thiocyanato, nitro, amino, alkylamino, acyl, sulfoxyl, sulfonyl, imido, amido, and carbamoyl wherein said substituents provide a redox potential range of less than about 2 volts;
- M1, M2, and M3 are independently selected metals;
- K1, K2, K3, K4, K5, K6, K7, K8, K9, K10, K11, and K12 are independently selected from the group consisting of N, O, S, Se, Te, and CH;
- J1 and J2 are independently selected linkers;
- Q1 and Q2 are independently selected linkers;
- X1 and X2 are independently selected from the group consisting of a substrate, reactive site that can covalently couple to a substrate, and a reactive site that can onically couple to a substrate;
- E1 and E2 are independently selected terminating substituents;
- and wherein said molecule has at least four different and distinguishable xidation states.
Dependencies are inferred from the claim text.