The quenching compounds of the invention are weakly luminescent cyanines that are substituted by one or more heteroaromatic quenching moieties. The quenching compounds of the invention exhibit little or no observable luminescence and efficiently quench a broad spectrum of luminescent compounds. The chemically...http://www.google.com/patents/US7910753?utm_source=gb-gplus-sharePatent US7910753 - Cyanine dyes and their applications as luminescence quenching compounds
