Abstract: The invention relates to new compounds of the general formula:
in which:
R1 is C1 to C6 alkyl or aryl,
R2 to R5 independently of each other are H, OH, C1 to C6 alkyl, C1 to C6 alkylene or OR6, R6 being C1 to C6 alkyl or aryl,
An− is an anion and
n is 1 or 2.
The compounds can be used as photosensitizers for example in medicine, agriculture and industry.
Type:
Grant
Filed:
December 15, 2000
Date of Patent:
June 25, 2002
Assignee:
Astrid Schastak
Inventors:
Stanislaw Schastak, Alexander Shulga, Frieder Berr, Peter Wiedemann