US 2008/0290328 A1 · Photochromic Material Comprising a Proteorhodopsin Apoprotein and a Retinal Analog

Abstract

The present invention relates to a photochromic material comprising a proteorhodopsin apoprotein and a retinal analog. In one embodiment, the retinal analog is an azulenic retinoid compound. In another embodiment, the retinal analog is a compound that is structurally similarly to all-trans-retinal. The proteorhodopsin apoprotein and the retinal analog form a photochromic material having different spectral properties from those of a corresponding photochromic material formed by the same proteorhodopsin apoprotein and all-trans-retinal. In one embodiment of the application, the retinal analog-containing proteorhodopsin has an absorbance spectrum that does not overlap significantly with that of all-trans-retinal-containing proteorhodopsin. In another embodiment of the application, the retinal analog-containing proteorhodopsin yields a red-shifted visual chromophore compared with the all-trans-retinal-containing proteorhodopsin chromophore. The photochromic material of the present invention is useful as an optical data storage carrier, a fraud-proof optical data carrier, security ink, and in other optical applications.

Claims15

Dependent claims

A photochromic material comprising a proteorhodopsin apoprotein and an azulenic retinoid compound of Formula I,

wherein R′, R″ and R′″ are each independently H, C1-4 straight chain alkyl, or C1-4 branched chain alkyl,
n is an integer from 1 to 4;
Xa and X′b are each independently H, C1-4 alkyl, F, C1 or CF3;
Y is absent, or Y is a para-, meta-, or ortho-phenyl;
and
Z is CHO.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/569,864Filed 9 Jun 2005

Priority

10 Jun 2004

Published

27 Nov 2008

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

C07C 403/14
Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four…:…
A61K 31/07
Hydroxy compounds, e.g. alcohols; Salts thereof, e.g. alcoholates: retinol compounds, e.g. vitamin A
A61K 31/19
Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids: carboxylic acids, e.g. valproic acid
A61K 31/20
Carboxylic acids, e.g. valproic acid: having a carboxyl group bound to a chain of seven or more carbon atoms, e.g. stearic, palmitic, arachidic acids

Photochromic Material Comprising a Proteorhodopsin Apoprotein and a Retinal Analog

Life of this patent

Photochromic Material Comprising a Proteorhodopsin Apoprotein and a Retinal Analog

Life of this patent

Abstract

Claims15