Accession Number : ADD001086

Title :   Photochromic Nitrobenzypyridines.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Weinstein,Julius ; Blubm,Aaron L ; Sousa,John A

Report Date : 06 Dec 1966

Pagination or Media Count : 3

Abstract : This invention relates to a novel group of photochromic derivatives of 2-nitrobenzylpyridine. The compounds described possess in common the ability to change or develop color in a solution phase when exposed to radiation in the ultra violet and visible light range. This color change is reversible, i.e., upon withdrawal of the radiation source or when placed in darkness the compounds return to their unactivated state. This property known as reversible photochromism, can be employed to great advantage in light filtering devices.

Descriptors :   *Patents, *Photochromic materials, *Pyridines, Synthesis(Chemistry), Reversible, Nitriles

Subject Categories : Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE