Syntheses of trisulfonated phthalocyanines and their derivatatives using boron (111) subphthalocyanines as intermediates
US5864044A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1997 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Jul 24, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F5/022
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Disclosed herein are novel trisulfonated phathalocyanines, processes for making them and their derivatives. Also disclosed are key intermediates consisting of Boron(III) subphathalocyanines. Further disclosed are novel uses for various water soluble trisulfophathalocyanines, trisulfobenzonapthoporphyrazines and trisulfonated phathalocyanines. The new uses are directed to photsensitizers for the photodynamic therapy of cancer, the inactivation of viruses in stored blood, organic semiconductors, disk memory material or as materials for gas sensors. In the compounds of the present invention, the central metal atom may be Zn, Co(II), Ni or Cu(II).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.