The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 1996
Filed:
Sep. 27, 1994
Mark M Green, New York, NY (US);
Other;
Abstract
This invention provides a photoswitchable compound comprising interconvertible mirror image units or interconvertible chiral diastereomeric units connected as pendant groups to a stiff polymer having interconvertible left- and right-handed helical portions of its backbone. Further provided by this invention is a photoswitchable compound formed by the method comprising combining an amount of the compound capable of optical activity and capable of changing its optical activity with an amount of a stiff polymer comprised of interconvertible left- and right-handed helical portions. Additionally, this invention provides a method for reversibly storing optical data comprising providing a material comprised of a mixture of a stiff polymer having interconvertible left- and right-handed helical portions and connected units, said units being capable of optical activity and capable of changing its optical activity and irradiating said material with light capable of changing the optical activity of said material.