Water soluble hybrid phthalocyanine derivatives useful in competitive and noncompetitive assays immunoassays, nucleic acid and assays are disclosed and claimed having (1) at least one donor subunit with a desired excitation peak; and (2) at least one acceptor subunit with a desired emission peak, wherein...http://www.google.es/patents/US7083984?utm_source=gb-gplus-sharePatente US7083984 - Hybrid phthalocyanine derivatives and their uses