Applications of Indoloindole and Indoloquinoline dyes
US9157917B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2011 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Feb 16, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2333/938
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A novel type of dye systems comprises a selection of 10H-indolo[1,2-a]indole compounds (henceforth abbreviated as IO compounds) and (5H,7H)-indolo[1,2-a]quinoline compounds (henceforth abbreviated as IQ compounds) showing a solvatochromic effect and exhibiting strong fluorescence in a variety of materials such as polypropylene, polyethylene, oils, various solvents, emulsions. Also disclosed are various methods how the IO/IQ compounds can be administered, especially how they can be produced and administered in situ from a precursor, responding to external stimuli such as enzyme activity, temperature and so forth. The response of a precursor to external stimuli can also be used to determine the presence or absence of such stimuli.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.