Electron-driven chirality switches

Optical waveguides – With optical coupler

Reexamination Certificate

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C349S113000, C349S182000, C544S225000, C546S002000, C548S103000, C548S402000, C549S003000

Reexamination Certificate

active

07024068

ABSTRACT:
Complexes of organic ligands with a metal ion exhibit unique conformation and spectroscopic properties upon changes in oxidation state of the metal ion. The metal is a redox-active metal ion and may possess additional ligands bonded to it. The organic ligand has three “arms” that are linked together at a central atom; each arm contains atoms that may also coordinate to the metal ion. At least two of the arms possess chromophoric properties. At least one arm contains two different groups that may coordinate to the metal ion. In one oxidation state, a first atom binds to the metal. In a second oxidation state, a second atom binds to the metal. This change in coordination of the metal ion results in a rotation of one of the arms, which changes the orientation of another group, which inverses the orientation of the two chromophoric species with respect to one another.

REFERENCES:
patent: 61-083283 (1986-04-01), None
patent: 61-83283 (1986-04-01), None
Arounaguiri, et al., “‘Electro-Photo Switch’ and ‘Molecular Light Switch’ Devices Based on Ruthenium (II) Complexes of Modified Dipyridophenazine Ligands: Modulation of the Photochemical Function through Ligand Design”,Inorganic Chemistry, vol. 38, 1999, pp. 842-843.
Belle, et al., “A Molecular Redox Switch via Iron Translocation in a Biocompartmental Ligand”,New Journal of Chemistry, vol. 22, 1998, pp. 1399-1402.
Burk, et al., “New Chiral C3-Symmetric Tripodal Phosphanes”,Angew Chem. Int. Ed. Engl. vol. 12, 1990, pp. 1462-1464.
Canary, et al., “Conformatinally Driven Propeller-like Chirality in Labile Coordination Complexes”,Journal of American Chemical Society, vol. 117, 1995, pp. 8484-8485.
Canary, et al., “Solid State and Solution Characterization of Chiral, Conformationally Mobile Tripodal Ligands”,Inorganic Chemistry, vol. 37, No. 24, 1998, pp. 6255-6262.
Castagnetto, et al., “Absolute Configuartional Assignment of Self-Organizing Asymmetric Tripodal Ligand-Metal Complexes”,Chirality, vol. 9, 1997, pp. 616-622.
Castagnetto, et al., “A Chiroptically Enhanced Fluorescent Chemosensor”,Chemical Communications, vol. 4, 1998, pp. 203-204.
Canevet, t al., “Molecular Redox-Switches by Ligand Excahnge”,Angew. Chem. Int. Engl., vol. 35, No. 22, 1996, pp. 2657-2660.
Chunag, et al., “Synthesis, Cyclic Voltammetry, and X-ray Crystal Structures of Copper (I) and Copper (II) Complexes of Tris ((6-phenyl-2-pyridyl) methyl)amine (TPPA)”,Inorganic Chemistry, vol. 34, 1995, 2562-2568.
Fabbrizzi, et al., “Sensors and Switches from Supramolecular Chemistry”,Chemical Society Reviews, 1995, pp. 197-202.
“Chiroptical Molecular Switch”,Journal of the American Chemistry Society, vol. 113, 1991, pp. 5468-5470.
Kawai, et al., “A Dual-Mode Molecular Switching Device: Bisphenolic Diarylethenes with Integrated Photochromic and Electochormoic Properties”,Cehm.Eur.J., vol. 1, No. 5, 1995, pp. 285-293.
Goulle, et al., “An Electro-Photoweitch of the Luminescence of a Bipyridine Metal Complex,”J. Chem. Soc., Chem. Commun., 1993, pp. 1034-1036.
Huck, et al., “Dynamic Control and Amplification of Molecular Chariality by Circular Polarized Light,”Science, vol. 273, 1996, pp. 1686-1688.
Janicki, et al., A Liquid Crystal Optp-Optical Switch: Nondestructive Information Retrieval Based on a Photochromic Fulgide as Trigger,Journal of American Chemical Society, vol. 117, 1995, pp. 8524-8527.
Livoreil, et al., “Electrochemically Triggerred Swinging of a [2] -Catenate,”Journal of the American Chemical Society, vol. 116, 1994, pp. 9399-9400.
Otsuki, et al., “Supramolecular Electro- and Phroto-Photoswitch,”Chemical Letters, 1999, pp. 269-270.
Spreitzer, et al., “Multi-Mode Switching Based on Dihydroazulene/Vinylheptafulvene Photochromism, Synergism of Photochromism and Redox Switching in Heteroaryl-Functionalized Systems,”Chem. Eur. J., vol. 2, No. 9, 1996, pp. 1150-1158.
Anelli, et al., “Molecular Meccano: 1. [2] Rotaxanes and [2] Catenane Made to Order,”Journal of the American Chemical Society, vol. 114, No. 1, 1992, pp. 193-218.
Zahn, et al., “Electron-Induced Inversion of Helical Chirality in Copper Complexes of N, N- Dialkylmethionines,”Science, vol. 288, 2000, pp. 1404-1407.
Zahn, et al., “Absolute Configurations of N, N-Dialkyl α-Amino Acids and βAmino Alcohols from Exciton-Coupled Circular Dichroism Spectra of Cu(II) Complexes,” Organic Letters, vol. 1, No. 6, 1999, 861-864.
Zahn, et al., “Redox-Switched Exciton-Coupled Circular Dichroism: A Novel Strategy for Binary Molecular Switching,”Angew. Chem. Int. Ed.vol. 37, No. 3, 1998, pp. 305-307.
Zellkovich, et al., “Molecular Redox Switches Based on Chemical Trigerring of Iron Translocation in Triple-Stranded Helical Complexes,”Letters to Nature, vol. 374, 1995, pp. 790-792.
Fernandez-Acebes, et al., “Optical Switching and Fluorescence Modulation in Photochromic Metal Complexes,”Advanced Materials, vol. 10, No. 18, 1998, pp. 1519-1522.

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