Methods and materials for fluorescent signal directed amplification biomarkers

A multichromophore complex comprising: a multichromophore covalently bonded to at least one biomolecule selected from the group consisting of a sensor biomolecule and bioconjugate, wherein the multichromophore is further covalently linked to a signaling chromophore and wherein multichromophore comprises the structure ** ** Formula wherein R1 is a solubilising group selected from the group consisting of oligomeric ethylene glycol, ethylene glycol polymers, salts of ω-alkoxy ammonium salts and ω-alkoxy sulfonate.